CN107475531A - A kind of system and method for reclaiming zinc powder - Google Patents

A kind of system and method for reclaiming zinc powder Download PDF

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Publication number
CN107475531A
CN107475531A CN201710726711.0A CN201710726711A CN107475531A CN 107475531 A CN107475531 A CN 107475531A CN 201710726711 A CN201710726711 A CN 201710726711A CN 107475531 A CN107475531 A CN 107475531A
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flue gas
zinc powder
pipe
zinc
decompression
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CN107475531B (en
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邓富洪
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/12—Making metallic powder or suspensions thereof using physical processes starting from gaseous material
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00—Obtaining zinc or zinc oxide
    • C22B19/04—Obtaining zinc by distilling
    • C22B19/16—Distilling vessels
    • C22B19/18—Condensers, Receiving vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention discloses a kind of system and method for reclaiming zinc powder, including smelting furnace, decompression sedimentation device, condenser, gravity settling device and bag collection device.The present invention is reasonable in design; it is simple in construction; can be achieved not stop production cleaning furnace gas export tamper and condenser pipe on the zinc powder that adheres to, and processing safety is very high and conveniently, substantially increases productivity effect; the rate of recovery of zinc powder reaches 100%; the impurity and material powder during flue gas containing zinc is mixed into are eliminated simultaneously, substantially increase the quality of zinc powder, the available Zn scrap returns that contain are as raw material; economize on resources, it is very environmentally friendly.

Description

A kind of system and method for reclaiming zinc powder
Technical field
The present invention relates to zinc powder recycling field, is containing zinc caused by smelting furnace reduction from containing Zn scrap returns more particularly to one kind The system and method for zinc powder are reclaimed in flue gas.
Background technology
China's smelting furnace production zinc powder, which is come from the 1970s, being developed by 600KVA rectangle electric arc furnaces by 2000, to be changed Into 800KVA circular electric arc furnaces.First 2000KVA circular electric arc furnaces was built up by 2006.During this period, smelting technique has Very big lifting, it can be contained till now by certain processing and formula using many kinds using single raw material calcining from originally The miscellaneous material of zinc is produced.But the technology for the zinc powder of off-gas recovery containing zinc for reacting to obtain by furnace reduction is very backward.
Backwardness is mainly manifested in the following aspects：1st, the zinc powder rate of recovery is low, wastes mineral resources；2nd, metal member in waste gas Cellulose content is high, Heavy environmental pollution；3rd, zinc powder recovery process is backward and zinc powder reclaimer is simple and crude, poor safety performance；4th, it is traditional Zinc powder recovery process, zinc powder recovery benefit it is low；5th, traditional zinc powder recovery process is operated, it is necessary to put into substantial amounts of labour Inconvenience；6th, traditional zinc powder recovery process continuity difference is, it is necessary to the cleaning that often stops production.
Existing zinc powder recovery method is all that the air inlet of condenser is opposite molten using first by condenser on slide rail The furnace gas export of furnace so that the flue gas containing zinc restored in smelting furnace can be directly entered condenser and be condensed, condensed device Unrecovered complete flue gas containing zinc, continue to be fed into next condenser and condense again, next unrecovered complete cigarette containing zinc of condenser Pneumatic transmission enters bagroom processing.
Many drawbacks in practical operation be present in prior art：
1st, because the flue gas containing zinc of furnace gas export discharge is that temperature is very high first, 1050~1100 degree or so are reached, and in order to Allow stove energy normal operation, the pressure of furnace gas export reaches 20Pa~30Pa, also, originally one mixing of flue gas containing zinc System, for mixed stocker when HTHP, explosion limit is very high, so explosion accident often occurs when cleaning and putting powder, ruins Bad condenser and bagroom even injure people or thing；
2nd, flue gas containing zinc is directly entered that condenser is very fast to the cold, and zinc fume understands some and is directly changed solid spelter, so not Just helical feed is used.And because the pressure of the flue gas containing zinc is very big, there are fraction of material and impurity can be with flue gas band in stove Enter condenser so that the quality of powder is impacted because, a condenser directly against furnace gas export, so, the temperature in a condenser Degree and pressure are all very high, and condensation effect is poor, and condensed zinc powder temperature height after cold, it is necessary to could enter vibratory sieve.
3rd, condensed zinc powder inconvenience spiral and conveyer belt conveying.It can only be treated in the local perforate by condenser bottom Powder is put into closed container at hole when having powder vibratory sieve is placed into after cold.As pressure can allow many cigarettes containing zinc Gas enters two condensers, has many zinc powders to be brought directly to cloth pocket with flue gas after the condensation of two condensers.Cloth bag is not having , can be very swollenly bulging by air-flow in the case of decompressor, the effect gathered dust so is unable to reach, some zinc powder is understood and is brought into In air, so not only waste of resource but also air had been polluted.
4th, also have the drawbacks of very big be exactly flue gas containing zinc out of stove out just to during furnace gas export because to lump to the cold, As beaten not in time, the refractory brick surface of furnace gas export will be firmly bonded in.Ordinary circumstance, will be furnace gas at 5-10 days Outlet obstruction so that the pressure in stove constantly increases, and causes danger, and must be cleared up for this, still, unique method of cleaning is exactly The height of stove is broken, pause production, the charging aperture above furnace roof opened, allows in stove the zinc fume and other restored Gas, discharged above furnace roof, after reducing pressure, a condensation pulley is pulled away from furnace gas export along track.Then open Begin cleaning, after cleaning out, then condenser is shifted onto furnace gas export and fixed, such operation is not only inconvenient but also have a lot Potential safety hazard.Productivity effect is low, waste of resource, pollutes air.
5th, zinc powder when condensation of the condenser pipe in condenser can be attached on condensation tube wall, can slowly lose condensation effect Fruit, in order to clear up condenser pipe, also only height is broken, pause production.Condenser is pulled away from furnace gas mouth, waited in condenser Condenser pipe is just begun a clean up when gas is discharged into certain naturally.
If Patent No. CN201110106817.3 Chinese invention patent is " using treating zinc-containing miscellaneous material through electric furnace production zinc powder Method ", disclose it is a kind of using treating zinc-containing miscellaneous material through electric furnace produce zinc powder method.By containing the miscellaneous materials quantitative dispensing of zinc, contain The miscellaneous material mixture granulation of zinc, containing the miscellaneous material particle roasting of zinc, baking flue gas dust collection, electro-smelting, zinc powder condensing and melting flue gas receive Dirt process, zinc powder is produced using the miscellaneous material containing zinc.But the patent is disadvantageous in that：This method is handling electric furnace reduction production Technique and equipment during the raw recovery of flue gas condensing containing zinc zinc powder is very simple and crude and problems be present after work a period of time：
1st, due to temperature difference between smelting furnace and furnace gas export be present, flue gas containing zinc lumps to the cold in the furnace gas export of smelting furnace Furnace gas export is caused to occur blocking, it is necessary to the cleaning that stops production；
2nd, smelting furnace will directly contain zinc flue gas and be conveyed to condenser, and the temperature of the flue gas containing zinc is very high, and pressure is also very big, leads Cause zinc vapor condensing effect excessively poor, and there is fraction of impurity and material powder to be brought directly to condenser in stove to influence zinc powder Quality, and flue gas containing zinc is directly entered condenser to have a fraction of zinc fume very fast to the cold, is directly changed spelter.
3rd, the zinc powder temperature that condenser is condensed into is very high, it is impossible to it is directly entered after vibratory sieve screened, it is necessary to be cooled down, Vibratory sieve material screen could be carried out；
4th, stop production cleaning furnace gas export blocking when, it is necessary to condenser is removed from furnace gas export by slide rail, now condenser Air inlet be easily accessible cold air and mix to produce with remaining flue gas containing zinc in condenser and explode, security is low；
During the zinc powder the 5th, adhered on the condenser pipe of stopping production cleaning condenser, condenser is opened, it is necessary to be manually entered in condenser clear Reason is adhered to the zinc powder of condenser pipe, but condenser enters cold air and can mix production with remaining flue gas containing zinc in condenser after opening Raw blast, not only cost of labor is high, and manual security's property is low.
6th, because flue gas containing zinc is directly entered condenser, condensation effect is poor, and the rate of recovery is low, waste of resource, pollutes environment.
Therefore, it is necessary to a kind of safe operation and conveniently occur, energy-conserving and environment-protective, moreover it is possible to improve the zinc powder rate of recovery and zinc powder quality Recovery zinc powder system and method.
The content of the invention
Present invention seek to address that drawbacks described above existing for prior art, it is an object of the invention to provide one kind to reclaim zinc powder System and method.The present invention is reasonable in design, simple in construction, can be achieved not stop production and clears up tamper and the condensation of furnace gas export The zinc powder adhered on pipe, and processing safety is very high and conveniently, substantially increases productivity effect, the rate of recovery of zinc zinc powder reaches To 100%, while the impurity and material powder during flue gas containing zinc is mixed into are eliminated, substantially increase the quality of zinc powder, it is available to contain Zn scrap returns economize on resources as raw material, very environmentally friendly.
In order to realize foregoing invention purpose, the present invention is realized using following technical scheme：
A kind of system for reclaiming zinc powder, including smelting furnace, decompression sedimentation device, condenser, gravity settling device and bag collection Device,
The smelting furnace is provided with furnace gas export；
The decompression sedimentation device includes casing and case lid, and the case lid is arranged on casing, and the top of the casing, which is provided with, to be subtracted Air inlet and decompression sedimentation gas outlet drop in sink, and " L-shaped " decompression is formed between decompression sedimentation air inlet and decompression sedimentation gas outlet Passage is settled, the bottom of the casing is provided with decompression sedimentation discharging opening, and decompression sedimentation discharging opening is provided with flashboard, the casing bag Interior layer box body and outer-layer box body are included, interior layer box body is arranged in outer-layer box body, and cooling is formed between interior layer box body and outer-layer box body Water cavity I, the top of the outer-layer box body are provided with the outlet pipe of cooling water cavity I, and the bottom of outer-layer box body intakes provided with cooling water cavity I Pipe, the case lid is interior to be provided with cooling water cavity II, and case lid is provided with the water inlet pipe of cooling water cavity II and the outlet pipe of cooling water cavity II, with subtracting Casing corresponding to sink drop air inlet is provided with beater mechanism；
The condenser includes cooling cylinder, and the cooling cylinder is provided with condensation air inlet and condensation gas outlet, the condensation upper box part Top plate four edges on be equipped with baffle plate, aqua storage tank is surrounded between baffle plate and top plate, is staggeredly distributed with the cooling cylinder Multiple condensing mechanisms, each condensing mechanism include condenser pipe, support base, cold water pipe, through hole and hollow waterproof seat, the support Cover for seat is on condenser pipe, and in cold water pipe insertion condenser pipe, the through hole is opened on top plate, and waterproof seat is arranged on through hole, The support base is arranged in waterproof seat, and condenser pipe stretches into formation condensation segment in cooling cylinder after sequentially passing through waterproof seat and through hole, In one side wall on the top that the condensation air inlet is opened in cooling cylinder, the top plate for condensing upper box part is provided with condensation venthole, Condensation escape pipe is communicated with condensation venthole, on condensation escape pipe, the baffle plate is provided with drainpipe for condensation gas outlet, row The installation site of water pipe is less than the vertical height of waterproof seat.
The gravity settling device includes two gravitational settling casees, and gravitational settling air inlet is equipped with each gravitational settling case Mouthful and gravitational settling gas outlet, be provided with deflection plate in each gravitational settling case, deflection plate formed in gravitational settling case one by Upper curved channel downwards again from bottom to top, the gravitational settling gas outlet of first gravitational settling case and second gravitational settling case Gravitational settling air inlet connection；
The bag collection device includes bagroom and inlet box, and inlet box is arranged on the lower section of bagroom, described Four escape pipes are communicated with the top of inlet box, the bottom of the inlet box is communicated with a rewinding pipe, and rewinding pipe is provided with butterfly Valve I, a snorkel is communicated with the middle part of the inlet box, and snorkel is provided with butterfly valve II, installed in the bag collection room There are two groups of cloth bag groups be arrangeding in parallel, every group of cloth bag group is made up of two cloth bags, and one end of each cloth bag is fixed on bag collection Sealed end is formed on the top of room, and the other end of each cloth bag is sleeved on an escape pipe, and the bagroom is provided with exhaust Pipe；
The furnace gas export of the smelting furnace connects with depressurizing the decompression sedimentation air inlet of sedimentation device, depressurizes the decompression of sedimentation device Sedimentation gas outlet connects with the condensation air inlet of condenser, the condensation gas outlet of condenser and the gravity of first gravitational settling case Air inlet connection is settled, the gravitational settling gas outlet of second gravitational settling case passes through the air inlet of snorkel and bag collection device Case connects.
The beater mechanism includes two beating bars and two mounting holes being opened on casing, is fixed on each mounting hole Flexible fire resistant seal set, one end of every beating bar is operating side, and the other end of every beating bar sequentially passes through flexible fire resisting Stretch at the furnace gas export of smelting furnace to be formed after sealing shroud, mounting hole and decompression sedimentation air inlet and pat end.
The top of the cooling cylinder is double-decker, and cooling water cavity III is formed between internal layer and outer layer, the cooling cylinder Top is provided with the water inlet pipe of cooling water cavity III and the outlet pipe of cooling water cavity III, and the installation site of the outlet pipe of cooling water cavity III is higher than cooling The installation site of the water inlet pipe of water cavity III, the outlet pipe of cooling water cavity III are stretched into aqua storage tank through baffle plate, the outlet pipe of cooling water cavity III Delivery port position be higher than waterproof seat vertical height.
The bottom of the cooling cylinder is provided with conveying worm I, and one end of the conveying worm I is arranged under cooling cylinder Form feed end in portion, the other end of conveying worm I stretches out the low profile of cooling cylinder into discharge end.
Vibrator is equipped with the two side of the condensation lower box part.
The bottom of each gravitational settling case is mounted on conveying worm II, and weight is stretched into one end of the conveying worm II Feed end is formed in power flow tank, the other end of conveying worm II, which is stretched out outside gravitational settling case, forms discharge end.
The conveying worm II of two gravitational settling casees connects integrally.
Cloth bag beater is provided with the bag collection room, cloth bag beater includes oscillating rod, limited block I, limited block II With beating bar, the beating bar is mounted on the oscillating rod between two groups of cloth bag groups, and cloth is stretched out in one end of the oscillating rod Bag dust chamber is outer to be fixed with limited block I, and the other end of oscillating rod is stretched out outside bag collection room to be fixed with limited block II, limited block II Spacing is provided between bagroom, pull bar is connected with the limited block II.
Spacing between the limited block II and bagroom is 30cm-50cm.
Also include connecting pipe I and connecting pipe II, the condensation gas outlet of condenser passes through connecting pipe I and first weight The gravitational settling air inlet connection of power flow tank, the gravitational settling gas outlet of first gravitational settling case by connecting pipe II with The gravitational settling air inlet connection of second gravitational settling case, the present invention are advantageous to cigarette using connecting pipe I and connecting pipe II The conveying of gas.
The condensing mechanism is 120-300.
A kind of method for reclaiming zinc powder, it is characterised in that comprise the following steps：
Pretreatment：The flue gas containing zinc of furnace gas export output from smelting furnace is sent into decompression sedimentation device to be pre-processed, containing zinc The condensation recovery in " L-shaped " decompression sedimentation passage of decompression sedimentation device of 1%~3% zinc fume obtains zinc powder in flue gas, containing zinc Mixed impurity and material powder depressurize in " L-shaped " and are deposited in decompression sedimentation dress in sedimentation passage after baffling and condensation in flue gas In putting, before pretreatment, the temperature of the flue gas containing zinc is 1050 DEG C~1150 DEG C, and the pressure of the flue gas containing zinc is 20 Pa~25Pa；Pre- place After reason, the temperature of the flue gas containing zinc is 800 DEG C~900 DEG C, and the pressure of the flue gas containing zinc is 15 Pa~20Pa；
One is cold：Flue gas containing zinc after pretreatment is sent into condenser again and condensed, residue 97%~99% in flue gas containing zinc The condensation of zinc fume condensed device after recovery obtain zinc powder, discharge containing the mixed flue gas that content is 5%~10% zinc powder dirt, mixing The temperature of flue gas is 35 DEG C~40 DEG C, and the pressure of mixed flue gas is 15Pa~20Pa；
Gravitational settling：The mixed flue gas of one cold step discharge is sent into gravity settling device, mixed flue gas fills in gravitational settling Continuously across two curved channels from top to bottom again from bottom to top in putting, contain the mixing cigarette that content is 5%~10% zinc powder dirt Recovery is settled in gas in the presence of gravity and deflection plate resistance of 98%~99% zinc powder dirt in curved channel and obtains zinc powder, is discharged The mixed flue gas of remaining 1%~2% zinc powder dirt；
Bag collection：The mixed flue gas that gravitational settling step is discharged is sent into bag collection device, remaining in mixed flue gas All recovery obtains zinc powder to zinc powder dirt after the Bag filter in bag collection device, discharges tail gas.
In the gravitational settling step, the temperature of sedimentation is normal temperature, and the pressure of sedimentation is 10Pa~15Pa.
In the bag collection step, the tail gas of discharge is sent into storage tank storage through piping.Because in the tail gas of discharge The content of CO gas is very high, and it is high to recycle value.
In the bag collection step, the heating part that the tail gas of discharge can deliver to coke drying oven by pipeline is ignited, can Heat energy is provided for coke drying oven, reduces dosage of the coke drying oven for coal, has saved coal cost and coal resources, It is very environmentally friendly.
The present invention compared with prior art, the advantage is that：
1st, the present invention is reasonable in design, simple in construction, is adhered on the tamper and condenser pipe of the achievable cleaning furnace gas export that do not stop production Zinc powder, and processing safety is very high and conveniently, substantially increases productivity effect, the rate of recovery of zinc powder reaches 100%, together When eliminate impurity and material powder during flue gas containing zinc is mixed into, substantially increase the quality of zinc powder, make using containing Zn scrap returns For raw material, economize on resources, it is very environmentally friendly.
2nd, the present invention includes casing and case lid using the decompression sedimentation device, and the case lid is arranged on casing, described The top of casing be provided with decompression sedimentation air inlet and decompression sedimentation gas outlet, decompression sedimentation air inlet and decompression sedimentation gas outlet it Between form " L-shaped " decompression sedimentation passage, the bottom of the casing is provided with decompression sedimentation discharging opening, and decompression sedimentation discharging opening is provided with Flashboard, the casing include interior layer box body and outer-layer box body, and interior layer box body is arranged in outer-layer box body, interior layer box body and outer layer case Cooling water cavity I is formed between body, the top of the outer-layer box body is provided with the outlet pipe of cooling water cavity I, and the bottom of outer-layer box body is provided with The water inlet pipe of cooling water cavity I, the case lid is interior to be provided with cooling water cavity II, and case lid is provided with the water inlet pipe of cooling water cavity II and cooling water cavity II outlet pipe；The flue gas containing zinc of the furnace gas export output of smelting furnace is directly entered decompression sedimentation device, 1%~3% in flue gas containing zinc Zinc fume through depressurize sedimentation device condensation after recovery obtain zinc powder, mixed impurity and material powder are through subtracting in flue gas containing zinc It is deposited in after " L " shape decompression sedimentation passage baffling of sink falling unit in decompression sedimentation device, after being collected by decompression sedimentation device Blowing is controlled by flashboard, from decompression sedimentation discharging opening discharge, that is, eliminates mixed impurity and material powder in flue gas containing zinc； Also reduce the temperature and pressure into the flue gas containing zinc of condenser；Setting up for decompression sedimentation device reduces furnace gas export output Flue gas containing zinc enter the temperature and pressure of condenser, while eliminate mixed impurity and material powder in flue gas containing zinc.
3rd, the present invention is provided with beater mechanism using casing corresponding with decompression sedimentation air inlet, and the beater mechanism includes Two beating bars and two mounting holes being opened on casing, flexible fire resistant seal set, every bat are fixed on each mounting hole The one end for making bar is operating side, and the other end of every beating bar sequentially passes through flexible fire resistant seal set, mounting hole and decompression sedimentation Stretch to be formed at the furnace gas export of smelting furnace after air inlet and pat end, can be by depressurizing beater mechanism in sedimentation device In the case of not stopping production, the tamper of furnace gas export is cleared up, avoids prior art from needing in the case of stopping production, then will be huge Condenser, which slides, to be opened, it is necessary to after the tamper of manual cleaning furnace gas export, then re-assemblies the cumbersome technique of production.
4th, the present invention includes cooling cylinder using the condenser, and the cooling cylinder is provided with condensation air inlet and condensation outlet Mouthful, baffle plate is equipped with each edge of the top plate of the condensation upper box part, aqua storage tank is surrounded between baffle plate and top plate, it is described cold It is staggeredly distributed with multiple condensing mechanisms on solidifying case, each condensing mechanism includes condenser pipe, support base, cold water pipe, through hole and hollow Waterproof seat, the support base is sleeved on condenser pipe, and in cold water pipe insertion condenser pipe, the through hole is opened on top plate, is prevented Water seat is arranged on through hole, and the support base is arranged in waterproof seat, condenser pipe sequentially pass through stretch into after waterproof seat and through hole it is cold Condensation segment is formed in solidifying case.The present invention in process of production, by aqua storage tank between support base and waterproof seat in condensing mechanism Water-stop, can be achieved individually will each condenser pipe extract cleaning out after turn back to again because the air pressure in condenser is higher, therefore When condenser pipe is extracted out, cold air will not be immediately entered in condenser, need to only be blocked with individual catch, clear in condenser pipe After having managed, take away catch and turn back to condenser pipe, it is easy to operate, and realize the cleaning that do not stop production, it is thus also avoided that it is existing Technology need stop production after open condenser be manually entered condenser cleaning condenser pipe, open condenser when, can discharge rest on it is cold Flue gas containing zinc in condenser, waste of resource, the situation of air is polluted, substantially increases production efficiency and the security of cleaning, section About resource, it is very environmentally friendly.
5th, in a side wall on the top that the present invention is opened in cooling cylinder using the condensation air inlet, the top of upper box part is condensed Plate is provided with condensation venthole, condenses and condensation escape pipe is communicated with venthole, and condensation gas outlet is on condensation escape pipe；It is cold Solidifying air inlet, which is opened in, can allow in a side wall on the top of cooling cylinder into the flue gas containing zinc in condenser along being interspersed The baffling passage conduct that condenser pipe is formed, the every nook and cranny that flue gas containing zinc can be spread in condenser quickly are cold to reach highest Solidifying effect, effectively prevent furnace gas export in the prior art and is directly connected with the condensation air inlet of condenser, cause to enter condensation The flue-gas temperature containing zinc of device is high, pressure is big and impurity is more, and flue gas containing zinc, by condenser, causes the cold of corner in a manner of direct current Solidifying pipe can not play a role, and temperature is high and pressure flue gas containing zinc greatly very fast can produce a large amount of spelters to the cold in condenser, The rate of recovery of zinc powder and the situation of quality are had a strong impact on.
6th, the present invention uses the top of the cooling cylinder as double-decker, and cooling water cavity III is formed between internal layer and outer layer, The top of the cooling cylinder is provided with the water inlet pipe of cooling water cavity III and the outlet pipe of cooling water cavity III, the installation of the outlet pipe of cooling water cavity III Position is higher than the installation site of the water inlet pipe of cooling water cavity III, and the outlet pipe of cooling water cavity III is stretched into aqua storage tank through baffle plate, cools down The position of the delivery port of the outlet pipe of water cavity III is higher than the vertical height of waterproof seat, and cooling water cavity III can further improve condenser Condensation effect, simple in construction, the water circulation of whole condenser is easy in the position of the delivery port of the outlet pipe of cooling water cavity III.
7th, the present invention is provided with conveying worm I, one end installation of the conveying worm I using the bottom of the cooling cylinder Feed end is formed in lower box, the other end of conveying worm I, which is stretched out outside lower box, forms discharge end, conveying worm I Setting can be collected the zinc powder for condensing recovery and convey, and conveying worm I can be achieved and directly coordinate a plurality of conveying worm Erection zinc powder be transported to screening machine directly screened, effectively prevent the higher nothing of zinc powder temperature of prior art condenser recovery After method is directly screened by vibratory sieve, it is necessary to first collect zinc powder with sealing barreled, natural cooling, recycle artificial toward under vibratory sieve Expect situation about being screened, saved labour, improved security, substantially increased production efficiency.
8th, the present invention is provided with drainpipe using the baffle plate, it is ensured that has water in aqua storage tank always by support base and waterproof seat Gap carry out water-stop, simple in construction, good sealing effect, at the same the installation site of drainpipe be less than waterproof seat vertical height Degree, effectively prevent the situation that water is poured into waterproof seat from occurring.
9th, for the present invention using vibrator is equipped with the two side of the lower box, the setting of vibrator can be by cooling cylinder The zinc powder adhered on inwall is shaked off, and on the one hand ensures the condensation effect of the upper box inwall of cooling cylinder, on the other hand by cooling cylinder Interior zinc powder is trembled into conveying worm I, simple in construction, easy to operate.
10th, the present invention includes two gravitational settling casees using the gravity settling device, is all provided with each gravitational settling case There are gravitational settling air inlet and gravitational settling gas outlet, be provided with deflection plate in each gravitational settling case, deflection plate is in gravitational settling Form a curved channel from top to bottom again from bottom to top in case, the gravitational settling gas outlet of first gravitational settling case and the The gravitational settling air inlet connection of two gravitational settling casees；Mixed flue gas is in gravity settling device by twice from top to bottom again Curved channel from bottom to top, 98%~99% zinc powder dirt work through gravity and deflection plate resistance in curved channel in mixed flue gas Receipts are dropped back to sinking obtain zinc powder, and gravity settling device sets up the work pressure for being additionally operable to stablize electric zinc furnace and condenser Power so that the flue gas containing zinc into condenser fully permeates the every nook and cranny of condenser, further improves the condensation of condenser Effect.
11st, the present invention is mounted on conveying worm II, the conveying worm using the bottom of each gravitational settling case II one end is stretched into and feed end is formed in gravitational settling case, and the other end of conveying worm II, which is stretched out outside gravitational settling case, to be formed out Expect end；The setting of conveying worm II, conveying worm II can be achieved and directly coordinate the erection of a plurality of conveying worm to settle Recovery obtains zinc powder and is transported to screening machine directly screening, and substantially increases production efficiency, can also be by the spiral shell of two gravitational settling casees Revolve the connection of conveyer II to use, reduce the erection of conveying worm, it is cost-effective.
12nd, the present invention includes bagroom and inlet box using the bag collection device, and inlet box is arranged on cloth bag The lower section of dust chamber, four escape pipes is communicated with the top of the inlet box, the bottom of the inlet box is communicated with a rewinding Pipe, rewinding pipe are provided with butterfly valve I, a snorkel are communicated with the middle part of the inlet box, snorkel is provided with butterfly valve II, described Two groups of cloth bag groups be arrangeding in parallel are installed in bag collection room, every group of cloth bag group is made up of two cloth bags, and the one of each cloth bag Sealed end is formed on the top that end is fixed on bagroom, and the other end of each cloth bag is sleeved on an escape pipe, the cloth Bag dust chamber is provided with blast pipe；Simple in construction, recovering effect is notable, and remaining zinc powder dirt is through bag collection device in mixed flue gas In Bag filter after all recovery obtain zinc powder, discharge tail gas, tail gas can be discharged directly, and the butterfly valve on rewinding pipe is used for close Envelope and blowing, operation is very easy；Butterfly valve II on snorkel is used to adjusting smelting furnace, decompression sedimentation device, condenser and again System pressure between power sedimentation device, while the room pressure of bagroom is adjusted, ensure the recovering effect of cloth bag.
13rd, the present invention is using being provided with cloth bag beater in the bag collection room, and cloth bag beater includes oscillating rod, spacing Block I, limited block II and beating bar, the beating bar are mounted on the oscillating rod between two groups of cloth bag groups, the oscillating rod One end stretch out bagroom and fixed with limited block I, the other end of oscillating rod stretches out bagroom 1 and consolidated with limited block II It is fixed, spacing is provided between limited block II and bagroom, pull bar is connected with the limited block II.Cloth bag beater is set Put, during beating, operation oscillating rod, which drives, to be patted bar and back and forth patted between two groups of cloth bag groups, and cloth bag is adhered to cloth bag after beating On zinc powder fall into rewinding pipe, the recovering effect of cloth bag has been effectively ensured；The setting of pull bar manually can promote pull bar to enter Row is patted, and can also be patted by motor driven pull bar, easy to operate.
14th, for the present invention using connecting pipe I and connecting pipe II is also included, the condensation gas outlet of condenser passes through connecting tube Road I connects with the gravitational settling air inlet of first gravitational settling case, and the gravitational settling gas outlet of first gravitational settling case leads to The gravitational settling air inlet that connecting pipe II is crossed with second gravitational settling case connects, and the present invention is using connecting pipe I and connection Pipeline II is advantageous to the conveying of flue gas.
15th, structure of the invention is applied in a kind of method for reclaiming zinc powder,
A, pre-treatment step employs the decompression sedimentation device of the present invention, can tentatively reclaim zinc powder, while reduce furnace gas export The flue gas containing zinc of output enters the temperature and pressure of condenser, also removes mixed impurity and material powder in flue gas containing zinc, Substantially increase the rate of recovery and quality of zinc powder；
B, a cold step employs the condenser of the present invention, and the present invention in process of production, individually can take out each condenser pipe Turned back to again after going out cleaning, it is easy to operate, and the cleaning that do not stop production is realized, substantially increase production efficiency and the peace of cleaning Quan Xing, economize on resources, it is very environmentally friendly, and also the every nook and cranny that can spread in quickly in condenser of flue gas containing zinc is to reach highest Condensation effect, and convey conveniently；
C, gravitational settling step employs the gravity settling device of the present invention, and gravity settling device obtains zinc powder in sedimentation recovery Meanwhile it is additionally operable to stablize the operating pressure of electric zinc furnace and condenser so that the flue gas containing zinc into condenser fully permeates The every nook and cranny of condenser, further improve the condensation effect of condenser.
D, bag collection step uses bag collection device, and remaining zinc powder dirt is through in bag collection device in mixed flue gas Bag filter after all recovery obtain zinc powder, discharge tail gas, can also be by the tail gas recycle containing a large amount of CO gas Recycle, blowing can be operated by butterfly valve I, it is very convenient, smelting furnace, decompression sedimentation dress can also be adjusted by butterfly valve II Put, the system pressure between condenser and gravity settling device, while adjust the room pressure of bagroom, ensure cloth bag Recovering effect.
16th, for the present invention using in the bag collection step, the tail gas of discharge is sent into storage tank storage through piping.Because The content of CO gas is very high in the tail gas of discharge, and it is high to recycle value.
17th, for the present invention using in the bag collection step, the mixed tail gas of discharge can deliver to coke drying oven by pipeline Heating part ignite, heat energy can be provided for coke drying oven, reduce dosage of the coke drying oven for coal, saved coal Cost and coal resources, it is very environmentally friendly.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention（Sedimentation device is depressurized without case lid）.
Fig. 2 is the structural representation of the outlet pipe installation site of cooling water cavity II in present invention decompression sedimentation device.
Fig. 3 is the structural representation of decompression sedimentation gas outlet in present invention decompression sedimentation device.
Fig. 4 is the structural representation of mounting hole in present invention decompression sedimentation device.
Fig. 5 is the structural representation of condenser of the present invention.
Fig. 6 is the structural representation of through hole in condenser of the present invention.
Fig. 7 is the structural representation that escape pipe is condensed in condenser of the present invention.
Fig. 8 is the cooling current direction schematic diagram of condensing mechanism in condenser of the present invention.
Fig. 9 is the structural representation of conveying worm I in condenser of the present invention.
Figure 10 is the structural representation of gravity settling device of the present invention（Two conveying worms II are independent）.
Figure 11 is the structural representation of gravity settling device of the present invention（Two conveying worms II connect）.
Figure 12 is the structural representation of bag collection device of the present invention.
Figure 13 is the structural representation of cloth bag beater in bag collection device of the present invention.
Reference is：1st, smelting furnace, 2, decompression sedimentation dress, 3, condenser, 4, gravity settling device, 5, bag collection dress Put, 6, connecting pipe I, 7, connecting pipe II, 111, furnace gas export；
Depressurize in sedimentation device：211st, casing, 212, case lid, 213, decompression sedimentation air inlet, 214, decompression sedimentation gas outlet, 215th, cooling water cavity I, 216, the outlet pipe of cooling water cavity I, 217, the water inlet pipe of cooling water cavity I, 218, cooling water cavity II, 219, cooling The water inlet pipe of water cavity II, 220, the outlet pipe of cooling water cavity II, 221, pat bar, 222, mounting hole, 223, flexible fire resistant seal set, 224th, decompression sedimentation discharging opening, 225, flashboard；
In condenser：311st, cooling cylinder, 312, condensation air inlet, 313, condensation gas outlet, 314, baffle plate, 315, condenser pipe, 316th, support base, 317, cold water pipe, 318, through hole, 319, waterproof seat, 320, condensation venthole, 321, condensation escape pipe, 322, Cooling water cavity III, 323, the water inlet pipe of cooling water cavity III, 324, the outlet pipe of cooling water cavity III, 325, conveying worm I, 326, draining Pipe, 327, vibrator, 328 top plates, 329, cooling water；
In gravity settling device：411st, gravitational settling case, 412, gravitational settling air inlet, 413, gravitational settling gas outlet, 414, Deflection plate, 415, conveying worm II；
In bag collection device：511st, bagroom, 512, inlet box, 513, escape pipe, 514, rewinding pipe, 515, butterfly valve I, 516th, snorkel, 517, butterfly valve II, 518, cloth bag, 519, blast pipe, 520, oscillating rod, 521, limited block I, 522, limited block II, 523, pat bar, 524, pull bar.
Embodiment
The present invention is further detailed with reference to Figure of description：
Embodiment 1：
A kind of system for reclaiming zinc powder, including smelting furnace 1, decompression sedimentation device 2, condenser 3, gravity settling device 4 and cloth bag Dust arrester installation 5,
The smelting furnace 1 is provided with furnace gas export 111；
The decompression sedimentation device 2 includes casing 211 and case lid 212, and the case lid 212 is arranged on casing 211, the casing 211 top is provided with decompression sedimentation air inlet 213 and decompression sedimentation gas outlet 214, and decompression sedimentation air inlet 213 and decompression settle " L-shaped " decompression sedimentation passage is formed between gas outlet 214, the bottom of the casing 211 is provided with decompression sedimentation discharging opening 224, subtracted Sink drop discharging opening 224 is provided with flashboard 225, and the casing 211 includes interior layer box body and outer-layer box body, and interior layer box body is arranged on In outer-layer box body, cooling water cavity I 215 is formed between interior layer box body and outer-layer box body, the top of the outer-layer box body is provided with cooling The outlet pipe 216 of water cavity I, the bottom of outer-layer box body are provided with the water inlet pipe 217 of cooling water cavity I, cooling water cavity are provided with the case lid 212 II 218, case lid 212 is provided with the water inlet pipe 219 of cooling water cavity II and the outlet pipe 220 of cooling water cavity II, and air inlet is settled with decompression Casing 211 corresponding to 213 is provided with beater mechanism；
The condenser 3 includes cooling cylinder 311, and the cooling cylinder 311 is provided with condensation air inlet 312 and condensation gas outlet 313, institute State and baffle plate 314 is equipped with four edges of the top plate 328 on the top of cooling cylinder 311, storage is surrounded between baffle plate 314 and top plate 328 Tank, 120 condensing mechanisms are staggeredly distributed with the cooling cylinder 311, and each condensing mechanism includes condenser pipe 315, support base 316th, cold water pipe 317, through hole 318 and hollow waterproof seat 319, the support base 316 are sleeved on condenser pipe 315, cold water pipe In 317 insertion condenser pipes 315, the through hole 318 is opened on top plate 314, and waterproof seat 319 is arranged on through hole 318, the branch Support seat 316 to be arranged in waterproof seat 319, condenser pipe 315 is stretched into cooling cylinder 311 after sequentially passing through waterproof seat 319 and through hole 318 Form condensation segment, in a side wall on condensation air inlet 312 top that is opened in cooling cylinder 311, the top on the top of cooling cylinder 311 Plate 328 is provided with condensation venthole 320, condenses and condensation escape pipe 321 is communicated with venthole 320, and condensation gas outlet 313 is located at Condense on escape pipe 321, the baffle plate 314 is provided with drainpipe 326, installation site the hanging down less than waterproof seat 319 of drainpipe 326 Straight height；
The gravity settling device 4 includes two gravitational settling casees 411, and gravitational settling is equipped with each gravitational settling case 411 Air inlet 412 and gravitational settling gas outlet 413, each gravitational settling case 411 is interior to be provided with deflection plate 414, and deflection plate 414 is in gravity A curved channel from top to bottom again from bottom to top, the gravitational settling of first gravitational settling case 411 are formed in flow tank 411 Gas outlet 413 connects with the gravitational settling air inlet 412 of second gravitational settling case 411；
The bag collection device 5 includes bagroom 511 and inlet box 512, and inlet box 512 is arranged on bagroom 511 lower section, the top of the inlet box 512 are communicated with four escape pipes 513, and the bottom of the inlet box 512 is communicated with one Root rewinding pipe 514, rewinding pipe 514 are provided with butterfly valve I 515, and the middle part of the inlet box 512 is communicated with a snorkel 516, sent Tracheae 516 is provided with butterfly valve II 517, and two groups of cloth bag groups be arrangeding in parallel, every group of cloth bag are provided with the bagroom 511 Group is made up of two cloth bags 518, and one end of each cloth bag 518 is fixed on the top formation sealed end of bagroom 511, each The other end of cloth bag 518 is sleeved on an escape pipe 513, and the bagroom 511 is provided with blast pipe 519, the cloth bag Cloth bag beater is provided with dust chamber 511；
The furnace gas export 111 of the smelting furnace 1 connects with depressurizing the decompression sedimentation air inlet 213 of sedimentation device 2, decompression sedimentation dress Put 2 decompression sedimentation gas outlet 214 to connect with the condensation air inlet 312 of condenser 3, the condensation gas outlet 313 of condenser 3 and the The gravitational settling air inlet 412 of one gravitational settling case 411 connects, the gravitational settling gas outlet of second gravitational settling case 411 413 are connected by snorkel 516 with the inlet box 512 of bag collection device 5.
In the present embodiment, the beater mechanism includes two beating bars 221 and two mounting holes being opened on casing 212 222, flexible fire resistant seal set 223 is fixed on each mounting hole 222, one end of every beating bar 221 be operating side, and every is clapped The other end for making bar 221 sequentially passes through flexible fire resistant seal set 223, mounting hole 222 and stretched to after depressurizing sedimentation air inlet 213 Formed at the furnace gas export 111 of smelting furnace 1 and pat end.
In the present embodiment, the flexible fire resistant seal set 223 is aluminosilicate refractory fiber sealing shroud.
In the present embodiment, the top of the cooling cylinder 311 is double-decker, and cooling water cavity III is formed between internal layer and outer layer 322, the top of the cooling cylinder 311 is communicated with the water inlet pipe 323 of cooling water cavity III and the outlet pipe 324 of cooling water cavity III, cooling water The installation site of the outlet pipe 324 of chamber III is higher than the installation site of the water inlet pipe 323 of cooling water cavity III, the outlet pipe of cooling water cavity III 324 delivery port is stretched into aqua storage tank through baffle plate 314, and the position of the delivery port of the outlet pipe 324 of cooling water cavity III is higher than waterproof The vertical height of seat 319.
In the present embodiment, the bottom of the cooling cylinder 311 is provided with conveying worm I 325, the conveying worm I 325 One end, which is arranged in the bottom of cooling cylinder 311, forms feed end, and the other end of conveying worm I 325 is stretched out under cooling cylinder 311 Discharge end is formed outside portion.
In the present embodiment, the bottom of each gravitational settling case 411 is mounted on conveying worm II 415, the spiral transferring Send one end of machine II 415 to stretch into and feed end is formed in gravitational settling case 411, the other end of conveying worm II 415 stretches out gravity Discharge end is formed outside flow tank 411.
In the present embodiment, in addition to connecting pipe I 6 and connecting pipe II 7, the condensation gas outlet of condenser 3 pass through connection Pipeline I 6 connects with the gravitational settling air inlet 412 of first gravitational settling case 411, the gravity of first gravitational settling case 411 Sedimentation gas outlet 412 is connected by connecting pipe II 7 with the gravitational settling air inlet 412 of second gravitational settling case 411, this hair The bright conveying for being advantageous to flue gas using connecting pipe I 6 and connecting pipe II 7.
The present embodiment when in use, using electric zinc furnace as smelting furnace, will be sent into zinc metallurgy electricity after the granulation of water orchid powder, drying Coke in stove, with electric zinc furnace produces reduction reaction, obtains the flue gas containing zinc containing zinc fume, and flue gas containing zinc settles by decompression Obtained zinc powder after device 2, condenser 3 reclaim, the zinc powder dirt contained in the mixed flue gas that condenser 3 is discharged sink by gravity again Falling unit 4 and bag collection device 5 obtain zinc powder after reclaiming, whole system progressively all reclaims zinc powder.
The flue gas containing zinc of the furnace gas export output of electric zinc furnace is directly entered decompression sedimentation device, 1%~3% in flue gas containing zinc Zinc fume through decompression sedimentation device condensation after recovery obtain zinc powder, in flue gas containing zinc mixed impurity and material powder through decompression It is deposited in after " L " shape decompression sedimentation passage baffling of sedimentation device in decompression sedimentation device, that is, eliminates and be mixed into flue gas containing zinc Impurity and material powder；Also reduce the temperature and pressure into the flue gas containing zinc of condenser；Set up in traditional technique Sedimentation device is depressurized, the flue gas containing zinc on the one hand reducing furnace gas export output enters the temperature and pressure of condenser, removes simultaneously Mixed impurity and material powder in flue gas containing zinc are removed；On the other hand, can by the beater mechanism depressurized in sedimentation device In the case where not stopping production, the tamper of furnace gas export is cleared up, avoids prior art from needing in the case of stopping production, then will be huge Condenser slide and open, it is necessary to manually clean furnace gas export after, then re-assembly the cumbersome technique of production；
Flue gas containing zinc through depressurizing sedimentation device output, which is sent into condenser, to be condensed, residue 97%~99% in flue gas containing zinc Recovery obtains zinc powder after the condensed device condensation of zinc fume, discharges containing the mixed flue gas that content is 5%~10% zinc powder dirt.
Condenser discharge zinc-containing dust mixed flue gas in gravity settling device continuously across two elder generations from top to bottom Curved channel from bottom to top again, in mixed flue gas 98%~99% zinc powder dirt in curved channel through gravity and deflection plate resistance Effect sinking drops back to receipts and obtains zinc powder, and recovery, which obtains zinc powder, can pass through the conveying of conveying worm II 415 in gravity settling device To vibratory sieve, and gravity settling device sets up the operating pressure for being additionally operable to stablize electric zinc furnace and condenser so that enters The flue gas containing zinc of condenser fully permeates the every nook and cranny of condenser.
The mixed flue gas of gravity settling device discharge is sent into bag collection device, remaining zinc powder dirt warp in mixed flue gas All recovery obtains zinc powder after Bag filter in bag collection device.
After system starts, every 3-4 hour, a flashboard 225 is opened, releases what decompression sedimentation device was collected After material, flashboard is turned off, can effectively avoid depressurizing in sedimentation device that the solid accumulation collected is excessive, influences whole technique.
Embodiment 2：
It is with the difference of embodiment 1：
In the present embodiment, the flexible fire resistant seal set 223 is graphite packing.
In the present embodiment, 180 condensing mechanisms are staggeredly distributed with the cooling cylinder 311.
In the present embodiment, vibrator 327 is equipped with the two side of the bottom of cooling cylinder 311.
In the present embodiment, the connection of conveying worm II 415 of two gravitational settling casees 411 is integral.
The present embodiment when in use, using electric zinc furnace as smelting furnace, zinc oxide is sent into after pretreatment zinc metallurgy electricity Coke in stove, with electric zinc furnace produces reduction reaction, obtains the flue gas containing zinc containing zinc fume, and flue gas containing zinc settles by decompression Obtained zinc powder after device 2, condenser 3 reclaim, the zinc powder dirt contained in the mixed flue gas that condenser 3 is discharged sink by gravity again Falling unit 4 and bag collection device 5 obtain zinc powder after reclaiming, whole system progressively all reclaims zinc powder.
Embodiment 3：
It is with the difference of embodiment 1, embodiment 2：
In the present embodiment, 210 condensing mechanisms are staggeredly distributed with the cooling cylinder 311.
Be provided with cloth bag beater in the present embodiment, in the bagroom 511, cloth bag beater including oscillating rod 520, Limited block I 521, limited block II 522 and beating bar 523, the swing patted bar 523 and be mounted between two groups of cloth bag groups On bar 520, one end of the oscillating rod 520 is stretched out bagroom 511 and fixed with limited block I 521, oscillating rod 520 it is another End is stretched out bagroom 511 and fixed with limited block II 522, and spacing is provided between limited block II 522 and bagroom 511, Pull bar 524 is connected with the limited block II 522.
In the present embodiment, the spacing between the limited block II 522 and bagroom 511 is 30cm.
Electrolysis zinc dross when in use, using electric zinc furnace as smelting furnace, is sent into refining by the present embodiment after pretreatment Coke in zinc of electric furnace, with electric zinc furnace produces reduction reaction, obtains the flue gas containing zinc containing zinc fume, flue gas containing zinc is by decompression Obtained zinc powder after sedimentation device 2, condenser 3 reclaim, the zinc powder dirt contained in the mixed flue gas that condenser 3 is discharged is again through overweight Power sedimentation device 4 and bag collection device 5 obtain zinc powder after reclaiming, whole system progressively all reclaims zinc powder.
Embodiment 4：
It is with the difference of embodiment 1, embodiment 2, embodiment 3：
In the present embodiment, 260 condensing mechanisms are staggeredly distributed with the cooling cylinder 311.
In the present embodiment, the spacing between the limited block II 522 and bagroom 511 is 40cm.
The present embodiment when in use, using electric zinc furnace as smelting furnace, by steel plant's ash of road containing zinc pipe after pretreatment The coke being sent into electric zinc furnace, with electric zinc furnace produces reduction reaction, obtains the flue gas containing zinc containing zinc fume, the warp of flue gas containing zinc Obtained zinc powder after over-subtraction sink falling unit 2, condenser 3 reclaim, the zinc powder dirt contained in the mixed flue gas that condenser 3 is discharged is again Zinc powder is obtained after gravity settling device 4 and bag collection device 5 reclaim, whole system progressively all reclaims zinc powder.
Embodiment 5：
It is with the difference of embodiment 1, embodiment 2, embodiment 3, embodiment 4：
In the present embodiment, 300 condensing mechanisms are staggeredly distributed with the cooling cylinder 311.
In the present embodiment, the spacing between the limited block II 522 and bagroom 511 is 50cm.
Close-burning back powder when in use, using enrichment stove as smelting furnace, is sent into enrichment stove by the present embodiment after pretreatment, Reduction reaction is produced with the coke in enrichment stove, obtains the flue gas containing zinc containing zinc fume, flue gas containing zinc is by decompression sedimentation device 2nd, obtained zinc powder after condenser 3 reclaims, the zinc powder dirt contained in the mixed flue gas that condenser 3 is discharged fill by gravitational settling again Zinc powder is obtained after putting 4 and the recovery of bag collection device 5, whole system progressively all reclaims zinc powder.
Embodiment 6：
It is with the difference of embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5：
The present embodiment when in use, can be first by water orchid powder, zinc oxide, electrolysis zinc dross, steel using electric zinc furnace as smelting furnace After ironworks road containing zinc pipe ash and close-burning back powder are pre-processed, zinc metallurgy electricity is sent into after therein two or more is mixed Coke in stove, with electric zinc furnace produces reduction reaction, obtains the flue gas containing zinc containing zinc fume, and flue gas containing zinc settles by decompression Obtained zinc powder after device 2, condenser 3 reclaim, the zinc powder dirt contained in the mixed flue gas that condenser 3 is discharged sink by gravity again Falling unit 4 and bag collection device 5 obtain zinc powder after reclaiming, whole system progressively all reclaims zinc powder.
Embodiment 7：
A kind of method for reclaiming zinc powder, comprises the following steps：
Pretreatment：The flue gas containing zinc of furnace gas export output from smelting furnace is sent into decompression sedimentation device to be pre-processed, containing zinc The condensation recovery in " L-shaped " decompression sedimentation passage of decompression sedimentation device of 1% zinc fume obtains zinc powder in flue gas, flue gas containing zinc In mixed impurity and material powder " L-shaped " depressurize sedimentation passage in through baffling and condensation after be deposited in decompression sedimentation device In, before pretreatment, the temperature of the flue gas containing zinc is 1050 DEG C, and the pressure of the flue gas containing zinc is 20 Pa；After pretreatment, the flue gas containing zinc Temperature is 800 DEG C, and the pressure of the flue gas containing zinc is 15 Pa；
One is cold：Flue gas containing zinc after pretreatment is sent into condenser again and condensed, the zinc of residue 99% steams in flue gas containing zinc Recovery obtains zinc powder after the condensed device condensation of vapour, discharges containing the mixed flue gas that content is 5% zinc powder dirt, the temperature of mixed flue gas For 35 DEG C, the pressure of mixed flue gas is 15Pa；
Gravitational settling：The mixed flue gas of one cold step discharge is sent into gravity settling device, mixed flue gas fills in gravitational settling Continuously across two curved channels from top to bottom again from bottom to top in putting, 98% zinc powder dirt is in curved channel in mixed flue gas Gravity and deflection plate resistance in the presence of sedimentation recovery obtain zinc powder, discharge the mixed flue gas of remaining 2% zinc powder dirt；
Bag collection:The mixed flue gas that gravitational settling step is discharged is sent into bag collection device, remaining in mixed flue gas Zinc powder dirt reclaims after the Bag filter in bag collection device and obtains zinc powder, discharges tail gas；
In gravitational settling step of the present invention, the temperature of sedimentation is normal temperature, and the pressure of sedimentation is 10Pa.
Embodiment 8：
A kind of method for reclaiming zinc powder, comprises the following steps：
Pretreatment：The flue gas containing zinc of furnace gas export output from smelting furnace is sent into decompression sedimentation device to be pre-processed, containing zinc The condensation recovery in " L-shaped " decompression sedimentation passage of decompression sedimentation device of 2% zinc fume obtains zinc powder in flue gas, flue gas containing zinc In mixed impurity and material powder " L-shaped " depressurize sedimentation passage in through baffling and condensation after be deposited in decompression sedimentation device In, before pretreatment, the temperature of the flue gas containing zinc is 1100 DEG C, and the pressure of the flue gas containing zinc is 22Pa；After pretreatment, the temperature of the flue gas containing zinc Spend for 850 DEG C, the pressure of the flue gas containing zinc is 18Pa；
One is cold：Flue gas containing zinc after pretreatment is sent into condenser again and condensed, the zinc of residue 98% steams in flue gas containing zinc Recovery obtains zinc powder after the condensed device condensation of vapour, discharges containing the mixed flue gas that content is 7% zinc powder dirt, the temperature of mixed flue gas For 37 DEG C, the pressure of mixed flue gas is 18Pa；
Gravitational settling：The mixed flue gas of one cold step discharge is sent into gravity settling device, mixed flue gas fills in gravitational settling Continuously across two curved channels from top to bottom again from bottom to top in putting, 98.5% zinc powder dirt is in curved channel in mixed flue gas Recovery is settled in the presence of interior gravity and deflection plate resistance and obtains zinc powder, discharges the mixed flue gas of remaining 1.5% zinc powder dirt；
Bag collection:The mixed flue gas that gravitational settling step is discharged is sent into bag collection device, remaining in mixed flue gas All recovery obtains zinc powder to zinc powder dirt after the Bag filter in bag collection device, discharges tail gas；
In gravitational settling step of the present invention, the temperature of sedimentation is normal temperature, and the pressure of sedimentation is 13Pa.
In bag collection step of the present invention, the tail gas of discharge is sent into storage tank storage through piping.Because discharge The content of CO gas is very high in tail gas, and it is high to recycle value.
Embodiment 9：
A kind of method for reclaiming zinc powder, comprises the following steps：
Pretreatment：The flue gas containing zinc of furnace gas export output from smelting furnace is sent into decompression sedimentation device to be pre-processed, containing zinc The condensation recovery in " L-shaped " decompression sedimentation passage of decompression sedimentation device of 3% zinc fume obtains zinc powder in flue gas, flue gas containing zinc In mixed impurity and material powder " L-shaped " depressurize sedimentation passage in through baffling and condensation after be deposited in decompression sedimentation device In, before pretreatment, the temperature of the flue gas containing zinc is 1150 DEG C, and the pressure of the flue gas containing zinc is 25Pa；After pretreatment, the temperature of the flue gas containing zinc Spend for 900 DEG C, the pressure of the flue gas containing zinc is 20Pa；
One is cold：Flue gas containing zinc after pretreatment is sent into condenser again and condensed, the zinc of residue 97% steams in flue gas containing zinc Recovery obtains zinc powder after the condensed device condensation of vapour, discharges containing the mixed flue gas that content is 10% zinc powder dirt, the temperature of mixed flue gas For 40 DEG C, the pressure of mixed flue gas is 20Pa；
Gravitational settling：The mixed flue gas of one cold step discharge is sent into gravity settling device, mixed flue gas fills in gravitational settling Continuously across two curved channels from top to bottom again from bottom to top in putting, 99% zinc powder dirt is in curved channel in mixed flue gas Gravity and deflection plate resistance in the presence of sedimentation recovery obtain zinc powder, discharge the mixed flue gas of remaining 1% zinc powder dirt；
Bag collection:The mixed flue gas that gravitational settling step is discharged is sent into bag collection device, remaining in mixed flue gas All recovery obtains zinc powder to zinc powder dirt after the Bag filter in bag collection device, discharges tail gas；
In the present invention, in the gravitational settling step, the temperature of sedimentation is normal temperature, and the pressure of sedimentation is 15Pa.
In the present invention, in the bag collection step, the tail gas of discharge can deliver to the heating of coke drying oven by pipeline Portion ignites, and can provide heat energy for coke drying oven, reduce dosage of the coke drying oven for coal, saved coal cost and Coal resources, it is very environmentally friendly.
Embodiment 7,8 and 9 when in use, can be first by water orchid powder, zinc oxide, electrolysis zinc dross, steel plant's ash of road containing zinc pipe With close-burning back powder after pretreatment, electric zinc furnace will be put into after one or more of mixing therein, with the coke in electric zinc furnace Produce reduction reaction reduction and produce the flue gas containing zinc containing zinc fume, flue gas containing zinc by embodiment 1-6 system handle Afterwards, zinc powder all reclaims, while also improves the quality of zinc powder, economizes on resources, very environmentally friendly.
And present invention process is simple, easy-to-operate, do not stop production cleaning furnace gas export and condenser pipe can be achieved, significantly Productivity effect is improved, and security is very high.
The invention is not restricted to above-described embodiment, the actual quantity of condensing mechanism can be increased according to the power of smelting furnace Subtract, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention Protection domain within.

Claims (10)

1. a kind of system for reclaiming zinc powder, including smelting furnace（1）, decompression sedimentation device（2）, condenser（3）, gravity settling device （4）With bag collection device（5）,
The smelting furnace（1）Provided with furnace gas export（111）；
The decompression sedimentation device（2）Including casing（211）And case lid（212）, the case lid（212）Installed in casing（211） On, the casing（211）Top be provided with decompression sedimentation air inlet（213）Gas outlet is settled with decompression（214）, casing（211） Bottom be provided with decompression sedimentation discharging opening（224）, decompression sedimentation discharging opening（224）It is provided with flashboard（225）, decompression sedimentation air inlet Mouthful（213）Gas outlet is settled with decompression（214）Between formed " L-shaped " decompression sedimentation passage, the casing（211）Including internal layer case Body and outer-layer box body, interior layer box body are arranged in outer-layer box body, and cooling water cavity I is formed between interior layer box body and outer-layer box body （215）, the top of the outer-layer box body is provided with the outlet pipe of cooling water cavity I（216）, the bottom of outer-layer box body is provided with cooling water cavity I Water inlet pipe（217）, the case lid（212）It is interior to be provided with cooling water cavity II（218）, case lid（212）Intake provided with cooling water cavity II Pipe（219）With the outlet pipe of cooling water cavity II（220）, air inlet is settled with decompression（213）Corresponding casing（211）It is provided with and pats Mechanism；
The condenser（3）Including cooling cylinder（311）, the cooling cylinder（311）Provided with condensation air inlet（312）With condensation outlet Mouthful（313）, the cooling cylinder（311）The top plate on top（328）Four edges on be equipped with baffle plate（314）, baffle plate（314）With Top plate（328）Between surround aqua storage tank, the cooling cylinder（311）On be staggeredly distributed with multiple condensing mechanisms, each condensing mechanism Including condenser pipe（315）, support base（316）, cold water pipe（317）, through hole（318）With hollow waterproof seat（319）, the support Seat（316）It is sleeved on condenser pipe（315）On, cold water pipe（317）Insert condenser pipe（315）It is interior, the through hole（318）It is opened in top Plate（314）On, waterproof seat（319）Installed in through hole（318）On, the support base（316）Installed in waterproof seat（319）On, it is cold Solidifying pipe（315）Sequentially pass through waterproof seat（319）And through hole（318）After stretch into cooling cylinder（311）Interior formation condensation segment, the condensation Air inlet（312）It is opened in cooling cylinder（311）Top a side wall on, cooling cylinder（311）The top plate on top（328）It is provided with Condense venthole（320）, condense venthole（320）On be communicated with condensation escape pipe（321）, condense gas outlet（313）Located at cold Solidifying escape pipe（321）On, the baffle plate（314）Provided with drainpipe（326）, drainpipe（326）Installation site be less than waterproof seat （319）Vertical height；
The gravity settling device（4）Including two gravitational settling casees（411）, each gravitational settling case（411）On be equipped with weight Power settles air inlet（412）With gravitational settling gas outlet（413）, each gravitational settling case（411）It is interior to be provided with deflection plate（414）, Deflection plate（414）In gravitational settling case（411）One curved channel from top to bottom again from bottom to top of interior formation, first gravity Flow tank（411）Gravitational settling gas outlet（413）With second gravitational settling case（411）Gravitational settling air inlet（412） Connection；
The bag collection device（5）Including bagroom（511）And inlet box（512）, inlet box（512）Installed in cloth bag Dust chamber（511）Lower section, the inlet box（512）Top be communicated with four escape pipes（513）, the inlet box（512） Bottom be communicated with a rewinding pipe（514）, rewinding pipe（514）It is provided with butterfly valve I（515）, the inlet box（512）Middle part It is communicated with a snorkel（516）, snorkel（516）It is provided with butterfly valve II（517）, the bagroom（511）Interior installation There are two groups of cloth bag groups be arrangeding in parallel, every group of cloth bag group is by two cloth bags（518）Composition, each cloth bag（518）One end fix In bagroom（511）Top formed sealed end, each cloth bag（518）The other end be sleeved on an escape pipe（513） On, the bagroom（511）Provided with blast pipe（519）；
The smelting furnace（1）Furnace gas export（1111）With depressurizing sedimentation device（2）Decompression sedimentation air inlet（213）Connection, Depressurize sedimentation device（2）Decompression sedimentation gas outlet（214）With condenser（3）Condensation air inlet（312）Connection, condenser （3）Condensation gas outlet（313）With first gravitational settling case（411）Gravitational settling air inlet（412）Connection, second weight Power flow tank（411）Gravitational settling gas outlet 413 pass through snorkel（516）With bag collection device（5）Inlet box（512） Connection.
A kind of 2. system for reclaiming zinc powder according to claim 1, it is characterised in that：The beater mechanism includes two bats Make bar（221）Casing is opened in two（212）On mounting hole（222）, each mounting hole（222）The upper flexible fire resisting of fixation Sealing shroud（223）, every beating bar（221）One end be operating side, every beating bar（221）The other end sequentially pass through flexibility Fire resistant seal set（223）, mounting hole（222）Air inlet is settled with decompression（213）After stretch to smelting furnace（1）Furnace gas export （111）Place, which is formed, pats end.
A kind of 3. system for reclaiming zinc powder according to claim 1, it is characterised in that：The cooling cylinder（311）Top For double-decker, cooling water cavity III is formed between internal layer and outer layer（322）, the cooling cylinder（311）Top be provided with cooling water The water inlet pipe of chamber III（323）With the outlet pipe of cooling water cavity III（324）, the outlet pipe of cooling water cavity III（324）Installation site higher than cold But the water inlet pipe of water cavity III（323）Installation site, the outlet pipe of cooling water cavity III（324）Through baffle plate（314）Stretch into aqua storage tank, The outlet pipe of cooling water cavity III（324）The position of delivery port be higher than waterproof seat（319）Vertical height.
A kind of 4. system for reclaiming zinc powder according to claim 1, it is characterised in that：The cooling cylinder（311）Bottom Provided with conveying worm I（325）, the conveying worm I（325）One end be arranged on cooling cylinder（311）Bottom in formed Feed end, conveying worm I（325）The other end stretch out cooling cylinder（311）Low profile into discharge end.
A kind of 5. system for reclaiming zinc powder according to claim 1, it is characterised in that：The cooling cylinder（311）Bottom Vibrator is equipped with two side（327）.
A kind of 6. system for reclaiming zinc powder according to claim 1, it is characterised in that：Each gravitational settling case（411）'s Bottom is mounted on conveying worm II（415）, the conveying worm II（415）One end stretch into gravitational settling case（411） Interior formation feed end, conveying worm II（415）The other end stretch out gravitational settling case（411）Outer formation discharge end.
A kind of 7. system for reclaiming zinc powder according to claim 1, it is characterised in that：The bagroom（511）It is interior Provided with cloth bag beater, cloth bag beater includes oscillating rod（520）, limited block I（521）, limited block II（522）With beating bar （523）, the beating bar（523）The oscillating rod being mounted between two groups of cloth bag groups（520）On, the oscillating rod（520） One end stretch out bagroom（511）With limited block I（521）It is fixed, oscillating rod（520）The other end stretch out bagroom （511）With limited block II（522）It is fixed, limited block II（522）With bagroom（511）Between be provided with spacing, it is described spacing Block II（522）On be connected with pull bar（524）.
A kind of 8. system for reclaiming zinc powder according to claim 1, it is characterised in that：Also include connecting pipe I（6）And even Adapter road II（7）, condenser（3）Condensation gas outlet pass through connecting pipe I（6）With first gravitational settling case（411）Weight Power settles air inlet（412）Connection, first gravitational settling case（411）Gravitational settling gas outlet（412）Pass through connecting pipe Ⅱ（7）With second gravitational settling case（411）Gravitational settling air inlet（412）Connection.
A kind of 9. method for recovery zinc powder that a kind of system for reclaiming zinc powder as claimed in claim 1 uses, it is characterised in that Comprise the following steps：
Pretreatment：The flue gas containing zinc of furnace gas export output from smelting furnace is sent into decompression sedimentation device to be pre-processed, containing zinc The condensation recovery in " L-shaped " decompression sedimentation passage of decompression sedimentation device of 1%~3% zinc fume obtains zinc powder in flue gas, containing zinc Mixed impurity and material powder depressurize in " L-shaped " and are deposited in decompression sedimentation dress in sedimentation passage after baffling and condensation in flue gas In putting, before pretreatment, the temperature of the flue gas containing zinc is 1050 DEG C~1150 DEG C, and the pressure of the flue gas containing zinc is 20 Pa~25Pa；Pre- place After reason, the temperature of the flue gas containing zinc is 800 DEG C~900 DEG C, and the pressure of the flue gas containing zinc is 15 Pa~20Pa；
One is cold：Flue gas containing zinc after pretreatment is sent into condenser again and condensed, residue 97%~99% in flue gas containing zinc The condensation of zinc fume condensed device after recovery obtain zinc powder, discharge containing the mixed flue gas that content is 5%~10% zinc powder dirt, mixing The temperature of flue gas is 35 DEG C~40 DEG C, and the pressure of mixed flue gas is 15Pa~20Pa；
Gravitational settling：The mixed flue gas of one cold step discharge is sent into gravity settling device, mixed flue gas fills in gravitational settling Continuously across two curved channels from top to bottom again from bottom to top in putting, contain the mixing cigarette that content is 5%~10% zinc powder dirt Recovery is settled in gas in the presence of gravity and deflection plate resistance of 98%~99% zinc powder dirt in curved channel and obtains zinc powder, is discharged The mixed flue gas of remaining 1%~2% zinc powder dirt；
Bag collection:The mixed flue gas that gravitational settling step is discharged is sent into bag collection device, remaining in mixed flue gas All recovery obtains zinc powder to zinc powder dirt after the Bag filter in bag collection device, discharges tail gas.
10. a kind of method for reclaiming zinc powder according to claim 9, in the gravitational settling step, the temperature of sedimentation is Normal temperature, the pressure of sedimentation is 10Pa~15Pa.
CN201710726711.0A 2017-08-23 2017-08-23 Zinc powder recycling system and method Active CN107475531B (en)

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