CN106039863B - A kind of device systems of electrolytic manganese anode Slag treatment lead nitrogen sulphur - Google Patents

A kind of device systems of electrolytic manganese anode Slag treatment lead nitrogen sulphur Download PDF

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CN106039863B
CN106039863B CN201610565909.0A CN201610565909A CN106039863B CN 106039863 B CN106039863 B CN 106039863B CN 201610565909 A CN201610565909 A CN 201610565909A CN 106039863 B CN106039863 B CN 106039863B
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cloth bag
smoke
pipe
lead
plumbery
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CN106039863A (en
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陈光宇
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023Pockets filters, i.e. multiple bag filters mounted on a common frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/60Simultaneously removing sulfur oxides and nitrogen oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/96Regeneration, reactivation or recycling of reactants
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B13/00Obtaining lead
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B47/00Obtaining manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001Dry processes
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04Working-up slag
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/40Alkaline earth metal or magnesium compounds
    • B01D2251/404Alkaline earth metal or magnesium compounds of calcium
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y02A50/2351Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention discloses a kind of device systems of electrolytic manganese anode Slag treatment lead nitrogen sulphur, the escape pipe of ferromanganese refining furnace is sequentially connected flue gas condenser, cloth bag except lead system, desulfurization removing nitric dust pelletizing system, smoke filter by sealing pipeline;Cloth bag removes plumbery except the cloth bag that lead system includes array setting, and each cloth bag removes and is equipped with smoke-intake pipe on plumbery;Smoke-intake pipe connects main air inlet pipe and auxiliary inlet manifold;Main air inlet pipe and auxiliary inlet manifold connection total inlet pipe;Blower fan is provided between main air inlet pipe and total inlet pipe;Cloth bag connects unleaded smoke pipe except plumbery top;Unleaded smoke pipe connects desulfurization removing nitric dust pelletizing system;Cloth bag is provided with orifice plate except plumbery is interior;Orifice plate is provided with smoke hole, and smoke hole connection removes lead cloth bag;Orifice plate lower end is provided with laying dust chamber;Cloth bag removes in plumbery and is provided with vibrator.It can realize the recycling to electrolytic manganese anode slag, reach no waste water, the emission treatment without waste residue, without atmosphere pollution, and environment protecting is good.

Description

A kind of device systems of electrolytic manganese anode Slag treatment lead nitrogen sulphur
Technical field
The present invention relates to metal smelt recovery technology field, specially a kind of equipment of electrolytic manganese anode Slag treatment lead nitrogen sulphur System.
Background technology
With developing rapidly for China's steel and non-ferrous metals industry, manganese and its alloy are used as steel, non-ferrous metals industry Additive, deoxidier and desulfurizing agent, be indispensable raw material, its demand also constantly increases, also pull electrolytic manganese metal row Industry is developed rapidly.2014, about 390,000 tons of Quanzhou electrolytic manganese production capacity, wherein:170,000 tons of Huayuan County, 40,000 tons of Guzhang, Luxi 100000 tons, 20,000 tons of Baojing, Hunan east Mining Group still has the project in construction for producing 100000 tons per year, belongs to the Xiushan Mountain of " manganese triangle " together 230,000 tons of electrolytic manganese annual capacity, loose 300,000 tons of peach electrolytic manganese annual production capacity.Solid produced by during each manufacturer production Discarded object -- anode slag, produce total amount per year by electrolytic manganese 8% is calculated, about 32000 tons of the annual output anode slag of Xiangxi electrolytic manganese, Anode slag is due to the lead metal hazardous waste containing 3%-5%, and arbitrarily disposal or outer sell can all cause serious environmental pollution, by Legitimate enterprise there is no to handle anode slag in the current country, by Xiangxi Autonomous Prefecture Environmental Protection Agency《Hazardous Wastes Management renovation scheme》, From in March, 2014, externally sale is forbidden.Thus, cause Inner electrolysis manganese producer of county to accumulate substantial amounts of anode slag nowhere to stack, The sustainable development of electrolytic manganese enterprise greatly is constrained, while being also great environmental pollution hidden danger.Anode slag is by being electrolysed Mn 2+ in part are oxidized to form Mn 4+ hydrous oxide in anode region in liquid.In electrolytic manganese anode slag containing substantial amounts of lead, Nitrogen, amounts of sulphur contaminants, because its composition is complicated, electrolytic process seriously changes compound property, recycles difficulty greatly, leaded in the past Anode slag is sold to ferromanganese enterprise ferromanganese smelting alloy, and under 1500 DEG C or so of high temperature action, lead is evaporate into the form of flue dust In flue gas, the lead contamination of ambient atmosphere, soil and water body is caused, causes human body blood lead exceeded.
The content of the invention
The purpose of the present invention be for problem above there is provided a kind of device systems of electrolytic manganese anode Slag treatment lead nitrogen sulphur and Its processing method, it can realize the emission treatment without waste water, without waste residue, without atmosphere pollution to electrolytic manganese anode slag, environmental protection Work well.
To realize object above, the technical solution adopted by the present invention is:A kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur is set Standby system, it includes ferromanganese refining furnace 1, and the escape pipe of the ferromanganese refining furnace 1 is sequentially connected flue gas condensing by sealing pipeline Device 2, cloth bag remove lead system 4, desulfurization removing nitric dust pelletizing system 5, smoke filter 6;The cloth bag is set except lead system 4 including array Cloth bag remove plumbery, each cloth bag is except being provided with smoke-intake pipe 45 on plumbery;The smoke-intake pipe 45 is all connected with the He of main air inlet pipe 8 Auxiliary inlet manifold 9;The main air inlet pipe 8 and auxiliary inlet manifold 9 are all connected with total inlet pipe 10;The main air inlet pipe 8 and total air inlet Blower fan 3 is provided between pipe 10;The cloth bag connects unleaded smoke pipe 7 except the gas outlet on plumbery top;The unleaded smoke pipe 7 is connected Desulfurization removing nitric dust pelletizing system 5;The cloth bag is except setting abacus 41 in plumbery;Smoke hole is evenly arranged with the orifice plate 41 411, each smoke hole 411 is all connected with one and removes lead cloth bag 42;The lower end of orifice plate 41 is provided with laying dust chamber 44;It is described enter cigarette Pipe 45 is located at the lower end of orifice plate 41;The cloth bag removes in plumbery and is provided with vibrator 43.
Further, the desulfurization removing nitric dust pelletizing system 5 includes desulfurization removing nitric room 16, and the upper end of desulfurization removing nitric room 16 connects Connect unleaded smoke pipe 7, lower end connection smoke filter 6;One end inner homogeneous on unleaded smoke pipe 7 close to desulfurization removing nitric room 16 is set There is waterfog head 141;The desulfurization removing nitric room 16 is to be provided with air filtering plate 15 in the middle of seal cavity, cavity;The waterfog head 141 water sprayed are limewash.
Further, the bottom of the desulfurization removing nitric room 16 connection first stage precipitation tank 17;The connection of first stage precipitation tank 17 two Level sedimentation basin 18;The second-level settling pond 18 connects waterfog head 141 by circulating water pipe 14.
Further, the division board 46 of activity is provided with the smoke-intake pipe 45;The lower end of laying dust chamber 44 is provided with Dirt switch 13;Division board 46 and the dust fall switch 13 is controlled by magnetic valve and cylinder.
Further, the caliber of main air inlet pipe 8 is more than auxiliary inlet manifold 9;The main air inlet pipe 8 is located at auxiliary inlet manifold 9 tops.
Further, the vibrator 43 is located at the lower end of orifice plate 41.
Further, described remove in lead cloth bag 42 is provided with U-shaped cooling tube 19;The U-shaped cooling tube 19 connects total cooling Pipe 20.
Further, it is described to remove the upper end connection fixing base 23 of lead cloth bag 42;The fixed seat 23 is uniformly arranged on fixed plate On 22;The upper end of U-shaped cooling tube 19 is fixed by fixed seat 23.
Further, the outer surface of U-shaped cooling tube 19 is enclosed with cylindric separation sleeve 21;The outer surface of separation sleeve 21 On be evenly arranged with condensate film 211.
Further, it is described except lead cloth bag 42 includes outer layer cloth bag 421 and internal layer cloth bag 422;The He of outer layer cloth bag 421 Connect band 423 is evenly arranged between internal layer cloth bag 422.
Beneficial effects of the present invention:
The present invention can carry out Recovery Purifying to the manganese in electrolytic manganese anode slag, lead, nitrogen, sulphur, solve anode slag nowhere heap The problem of environmental pollution put and thus brought.Organic efficiency is high, and the rate of recovery of lead can reach 98%;Using condensation principle, use The cloth bag specially designed collects the lead isolation after cooling except plumbery;Sent out using calcium oxide and sulfur dioxide, nitrogen dioxide Sulfur dioxide, nitrogen dioxide are transformed into sediment and collected by the principle of raw reaction.By the contamination gas in electrolytic manganese anode slag Body carries out reclaiming clean, and the air quality after purification is higher than national requirements standard.
Brief description of the drawings
Fig. 1 is overall system structure schematic diagram of the present invention.
Fig. 2 removes lead system and desulfurization removing nitric dust pelletizing system structural representation for cloth bag in the present invention.
Fig. 3 is that cloth bag removes plumbery internal structure schematic diagram.
Fig. 4 removes structural representation when cooling tube is provided with plumbery for cloth bag.
Fig. 5 is to remove lead cloth bag detailed internal configuration schematic diagram with cooling tube.
Fig. 6 is A-A cross section structure diagrams in Fig. 5.
Fig. 7 is cloth bag except the AND DEWATERING FOR ORIFICE STRUCTURE schematic diagram in plumbery.
Fig. 8 is processing method schematic flow sheet of the present invention.
In figure:1st, ferromanganese refining furnace;2nd, flue gas condenser, 3, blower fan;4th, cloth bag removes lead system;5th, desulfurization removing nitric dedusting system System;6th, smoke filter;7th, unleaded smoke pipe;8th, tracheae;9th, auxiliary inlet manifold;10th, total inlet pipe;13rd, dust fall is switched;14th, follow Ring water pipe;15th, air filtering plate;16th, desulfurization removing nitric room;17th, first stage precipitation tank;18th, second-level settling pond;19th, U-shaped cooling tube;20th, it is total Cooling tube;21st, separation sleeve;22nd, fixed plate;23rd, fixed seat;41st, orifice plate;42nd, except lead cloth bag;43rd, vibrator;44th, laying dust chamber; 45th, smoke-intake pipe;141st, waterfog head;46th, division board;411st, smoke hole;421st, outer layer cloth bag;422nd, internal layer cloth bag;423rd, even Tape splicing;211st, condensate film.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, specific reality below to the present invention The mode of applying elaborates.Many details are elaborated in the following description to fully understand the present invention.But this Invention can be implemented with being much different from other modes described here, and those skilled in the art can be without prejudice to the present invention Similar improvement is done in the case of intension, therefore the present invention is not limited to the specific embodiments disclosed below.
As Figure 1-Figure 8, concrete structure of the invention is:A kind of equipment system of electrolytic manganese anode Slag treatment lead nitrogen sulphur System, it includes ferromanganese refining furnace 1, the escape pipe of the ferromanganese refining furnace 1 by seal pipeline be sequentially connected flue gas condenser 2, Cloth bag removes lead system 4, desulfurization removing nitric dust pelletizing system 5, smoke filter 6;The cloth bag includes the cloth that array is set except lead system 4 Bag removes plumbery, and each cloth bag removes and is provided with smoke-intake pipe 45 on plumbery;The smoke-intake pipe 45 is all connected with main air inlet pipe 8 and auxiliary Air inlet pipe 9;The main air inlet pipe 8 and auxiliary inlet manifold 9 are all connected with total inlet pipe 10;The main air inlet pipe 8 and total inlet pipe 10 Between be provided with blower fan 3;The cloth bag connects unleaded smoke pipe 7 except the gas outlet on plumbery top;The unleaded smoke pipe 7 connects desulfurization Denitrification dedusting system 5;The cloth bag is except setting abacus 41 in plumbery;Smoke hole 411 is evenly arranged with the orifice plate 41, often One smoke hole 411 is all connected with one and removes lead cloth bag 42;The lower end of orifice plate 41 is provided with laying dust chamber 44;The smoke-intake pipe 45 In the lower end of orifice plate 41;The cloth bag removes in plumbery and is provided with vibrator 43.
It is preferred that, the desulfurization removing nitric dust pelletizing system 5 includes desulfurization removing nitric room 16, the upper end of desulfurization removing nitric room 16 connection Unleaded smoke pipe 7, lower end connection smoke filter 6;One end inner homogeneous on unleaded smoke pipe 7 close to desulfurization removing nitric room 16 is provided with Waterfog head 141;The desulfurization removing nitric room 16 is to be provided with air filtering plate 15 in the middle of seal cavity, cavity;The waterfog head 141 The water of ejection is limewash.
It is preferred that, the bottom of desulfurization removing nitric room 16 connects first stage precipitation tank 17;The first stage precipitation tank 17 connects two grades Sedimentation basin 18;The second-level settling pond 18 connects waterfog head 141 by circulating water pipe 14.
It is preferred that, the division board 46 of activity is provided with the smoke-intake pipe 45;The lower end of laying dust chamber 44 is provided with dust fall Switch 13;Division board 46 and the dust fall switch 13 is controlled by magnetic valve and cylinder.
It is preferred that, the caliber of main air inlet pipe 8 is more than auxiliary inlet manifold 9;The main air inlet pipe 8 is located at auxiliary inlet manifold 9 Top.
It is preferred that, the vibrator 43 is located at the lower end of orifice plate 41.
It is preferred that, described remove in lead cloth bag 42 is provided with U-shaped cooling tube 19;The U-shaped cooling tube 19 connects total cooling tube 20。
It is preferred that, it is described to remove the upper end connection fixing base 23 of lead cloth bag 42;The fixed seat 23 is uniformly arranged on fixed plate 22 On;The upper end of U-shaped cooling tube 19 is fixed by fixed seat 23.
It is preferred that, the U-shaped outer surface of cooling tube 19 is enclosed with cylindric separation sleeve 21;On the outer surface of separation sleeve 21 It is evenly arranged with condensate film 211.
It is preferred that, it is described except lead cloth bag 42 includes outer layer cloth bag 421 and internal layer cloth bag 422;The outer layer cloth bag 421 and interior Connect band 423 is evenly arranged between layer cloth bag 422.
When the present invention is specifically used,
The opening and closing of division board 46 and dust fall switch 13 is controlled by magnetic valve and cylinder, is normally removed under lead state, division board 46 open, and flue gas enters cloth bag except progress is except lead in plumbery by smoke-intake pipe 45, and lead dust falls into product under the vibrations of vibrator 43 In dirt chamber 44;After lead dust runs up to a certain amount of in laying dust chamber 44, control system automatically controls division board 46 and closed, and controls dust fall Switch 13 is opened, and lead dust is discharged from laying dust chamber 44;As shown in Fig. 2 array is provided with 4 cloth bags except plumbery, each is removed Plumbery is connected by single smoke-intake pipe 45 with main air inlet pipe 8 and auxiliary inlet manifold 9;Electronic control system closes a cloth every time Bag removes the division board 46 of plumbery, opens corresponding dust fall switch 13, continues after 15 minutes, open division board 46, closes dust fall and open Close 13;The division board 46 that another cloth bag removes plumbery is then shut off, corresponding dust fall switch 13 is opened;Such loop control, energy Keep cloth bag most preferably to remove lead function except plumbery, prevent obstruction.
The processing method of electrolytic manganese anode Slag treatment lead nitrogen sulphur includes following process step:
Step 1: anode slag melting:Matched by mass fraction, 2.5-3.5 parts of electrolytic manganese sun are added into ferromanganese refining furnace Pole slag, it is 1600-1700 DEG C to maintain ferromanganese refining in-furnace temperature, continues after melting 20-30min, sequentially adds 0.5-1.5 parts of stones Ash, 1.5-2.5 parts of silicomangan powder, it is 20-30RPM to maintain mixing speed in stove, is continued after melting 1.5-1.7h, is stopped molten Refining, discharges molten iron from discharging opening, medium-low carbon ferromanganese is formed after cooling, and Mn-rich slag is discharged from slag notch.
Step 2: flue gas is controlled:In step one continues fusion process, it is less than 200 DEG C to control flue gas condenser temperature; It is 2000-2500RPM to control rotation speed of fan;Control cloth bag removes temperature in plumbery and is not higher than 200 DEG C.
Smelting principle:
Manganese ore in furnace charge is in thermal histories, and the high oxide of manganese is progressively decomposed with the rise of temperature, is become Low oxide.Manganese ore is thermally decomposed into Mn3O4, then, while continuing to heat up, part high oxide is directly anti-with silicon Low oxide or manganese Metal should be generated, its reaction is as follows:
2Mn3O4+ Si=6MnO+SiO2
Mn3O4+ 2Si=3Mn+2SiO2
The Mn not being reduced3O4MnO is thermally decomposed into, is fusing into clinker, is continued by the Si reduction in alloy solution, Its reaction equation is:
2MnO+Si=2Mn+SiO2
CaO is due to reaction product MnO and SiO2It is combined into silicate (MnO2*SiO2), cause reactant MnO activity Reduction, forward reaction becomes difficult.In order to improve MnO reduction effect, the rate of recovery of manganese is improved, it is necessary to add one in furnace charge Quantitative lime, MnO is cemented out from silicic acid manganese salt.Its reaction equation is:
MnO2*SiO2+ CaO=MnO+CaO*SiO2
Mn-rich slag or manganese ore are the oxide sources of manganese.Using the middle low Carbon Manganese compared with low phosphorus content can be obtained during Mn-rich slag Iron, but the SiO in Mn-rich slag2Higher, MnO is with 2MnO2*SiO2State is present, and MnO reduction is more difficult, and the manganese in manganese ore More with MnO2Form exist, MnO2Mn is thermally decomposed into stove3O4, from the point of view of the reaction carried out according to melting, add lime pair It is favourable to improve basicity of slag.But basicity is unsuitable too high, because basicity is too high, can increase the quantity of slag, make clinker retrogradation, reacts Inactive, while can also raise furnace temperature, power consumption increase, the volatilization loss of manganese also increases.Therefore clinker alkali in actual production Spend (CaO+MgO)/SiO2Control is in the range of 1.3-1.7.
Smelting process:
The conventional method of low-carbon ferromanganese is produced, the refining furnace of use is generally the graphite electrode refining furnace of tilting-type.Middle low-carbon The smelting process of ferromanganese is divided into fettling, striking, charging, fusing, refines, taps a blast furnace.
Fettling:Furnace lining is built up (magnesia brick or magnesian ramming mass) with magnesian.Because furnace lining is often in common work under high temperature Make, i.e., to bear the erosion of clinker and metal, and acted on by high arc temperature, thus furnace bottom and burner hearth are with the duration of heat Extension and it is gradually thinning, especially tapping hole be easier damage.In order to protect furnace lining, after a upper stove has gone out iron, to enter immediately Row botting and fettling.Striking, charging and fusing:After fettling terminates, lime is added, part manganese-silicon striking is added therewith, Remaining compound is added in stove together again.After furnace charge is added, electric power can be given at full capacity.In order to reduce heat waste and shorten fusing Phase, the furnace charge at burner hearth edge to be pushed near electrode and the stove heart in time, but to prevent from turning over slag and splash.Treat that furnace charge is substantially melting down Afterwards, (now alloy silicon silicon content is reduced to 3~6%, and basicity of slag and manganese content are also close to finishing slag), just into refining period.
Refining:Due to having reached 1500-1600 DEG C in fusing latter stage slag temperature, desilication reaction terminates substantially, therefore smart Refining phase desiliconization speed slows down.To accelerate desiliconization, shorten refining time, molten bath should repeatedly be stirred, and timing sampling judges Alloy silicon content, determines tapping duration, alloy silicon content general control is in the range of 1.5-2.0%.Alloy silicon content can lead to Cross and visually observe surface of the alloy sample in condensation process and cut surface character to judge:When alloy silicon content is less than 0.8%, liquid Body sample is sticky, and mobility is bad, and specimen surface wrinkle is more, and section is dark, and crystallization is thin, easily smashes;When alloy is siliceous in 1.5- When 2.0%, specimen surface casting skin part is peeled off, and crystallization is fine and closely woven, and port is in canescence, glossy, non-friable;When alloy silicon content During more than 2.0%, liquor sample good fluidity, specimen surface is smooth, without wrinkle, and specimen surface casting skin almost all comes off, Fracture is in glassy, nodeless mesh, is difficult to smash, and should now continue refining.After a period of time is refined, alloy silicon content is also high, Can toward some manganese ores and lime is added in stove, continue to be refined to silicon content it is qualified after can come out of the stove.Extend refining time, slag can be made Middle manganese content reduction, but the volatilization loss of manganese and the increase of power consumption can be caused.Therefore manganese content in slag should not be overemphasized.
Tap a blast furnace:When alloy silicon content, which is basically reached, to be required, you can having a power failure, it is calm to carry out, make metal in the dreg grain fully heavy Drop, then taps a blast furnace.When tapping a blast furnace, alloy and clinker are flowed into ladle together, produce mixed punching during due to tapping a blast furnace between clinker and alloy Effect, so can also slough 0.2-1% silicon outside stove.Identical with high carbon ferromanganese, the ladle used must periodically dross be simultaneously Rotation is used.Due to alloy properties crisp, cool down more more crisp soon and not fine and close, thus small-sized electric furnace is frequently with lid slag insulated pouring. From the alloy that is flowed out in stove and clinker while flowing to the sand hill made real with magnesia bittern in, unnecessary clinker inflow is connected in series In cinder ladle, alloy solidifies cooling in sand hill under the covering of slag.
During melting medium-low carbon ferromanganese, (CaO+MgO)/SiO2Control is in the range of 1.3-1.7.Such as basicity is too high, and electric arc is long, Sound is big, and material speed is slow, and furnace wall dross is more, and fire door emits brown dense smoke, and slag is thick, slag iron hardly possible separation, easily efflorescence after cooling of furnace slag; Such as basicity is too low, and electrode does not reveal arc, and sound is small, and material speed is fast, and slag is dilute, good fluidity, and lining wear is serious, and slag iron is easily divided From clinker not efflorescence substantially after cooling.
The electric load of electric furnace will be supplied according to the characteristics of melting stage and refining period by smelting medium-low carbon ferromanganese.In order to accelerate Load melting, melting stage should be at full capacity;In order to reduce the volatilization loss of heat and manganese, refining period should reduce load.Power load The big I of lotus is realized by changing curtage value.
Containing 4% or so lead in electrolytic manganese anode slag, the principle of the invention is to utilize ferromanganese refining furnace by anode slag high temperature Medium-low carbon ferromanganese is smelted into, is 327 DEG C because the fusing point of lead is relatively low, lead is wholly converted into gas entrance after high temperature and specially set The cloth bag of meter is removed in plumbery, after cooling, cloth bag retention solid lead, and the sulphur, nitrogen in flue gas are then through desulfurization removing nitric dedusting System is removed so that the flue gas of last discharge reaches discharging standards.
In desulfurization removing nitric dust pelletizing system:The gases such as sulfur dioxide, nitrogen dioxide and limewash react to form sediment It is collected;The clear limewash produced after secondary precipitation is recycled through circulating water pipe 14 again.
The flue gas inspection after electrolytic manganese anode Slag treatment is reported as follows through the present invention:
1st, Back ground Information
2nd, detection method and instrument and equipment
3rd, testing result:
From examining report as can be seen that the air matter discharged after being handled by the present invention electrolytic manganese anode slag flue gas Amount, which is significantly larger than country, allows the limit value of discharge.
It should be noted that herein, term " comprising ", "comprising" or its any other variant are intended to non-row His property is included, so that process, method, article or equipment including a series of key elements not only include those key elements, and And also including other key elements being not expressly set out, or also include for this process, method, article or equipment institute inherently Key element.
Specific case used herein is set forth to the principle and embodiment of the present invention, the explanation of above example It is only intended to the method and its core concept for helping to understand the present invention.Described above is only the preferred embodiment of the present invention, should When pointing out due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for the common skill of the art For art personnel, under the premise without departing from the principles of the invention, can also make it is some improve, retouching or change, can also be by Above-mentioned technical characteristic is combined by rights;These improve retouching, change or combined, or the not improved structure by invention Think and technical scheme directly applies to other occasions, be regarded as protection scope of the present invention.

Claims (9)

1. a kind of device systems of electrolytic manganese anode Slag treatment lead nitrogen sulphur, it includes ferromanganese refining furnace(1), it is characterised in that institute State ferromanganese refining furnace(1)Escape pipe be sequentially connected flue gas condenser by sealing pipeline(2), cloth bag remove lead system(4), desulfurization Denitrification dedusting system(5), smoke filter(6);The cloth bag removes lead system(4)Plumbery is removed including the cloth bag that array is set, often One cloth bag removes and is provided with smoke-intake pipe on plumbery(45);The smoke-intake pipe(45)It is all connected with main air inlet pipe(8)And additional-air inlet Pipe(9);The main air inlet pipe(8)And auxiliary inlet manifold(9)It is all connected with total inlet pipe(10);The main air inlet pipe(8)With always entering Tracheae(10)Between be provided with blower fan(3);The cloth bag connects unleaded smoke pipe except the gas outlet on plumbery top(7);It is described unleaded Smoke pipe(7)Connect desulfurization removing nitric dust pelletizing system(5);The cloth bag is except setting abacus in plumbery(41);The orifice plate(41)On It is evenly arranged with smoke hole(411), each smoke hole(411)It is all connected with one and removes lead cloth bag(42);The orifice plate(41)Under End is provided with laying dust chamber(44);The smoke-intake pipe(45)Positioned at orifice plate(41)Lower end;The cloth bag removes in plumbery and is provided with vibration Device(43);It is described to remove lead cloth bag(42)Inside it is provided with U-shaped cooling tube(19);The U-shaped cooling tube(19)Connect total cooling tube (20).
2. the device systems of a kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur according to claim 1, it is characterised in that described Desulfurization removing nitric dust pelletizing system(5)Including desulfurization removing nitric room(16), the desulfurization removing nitric room(16)Upper end connects unleaded smoke pipe(7), Lower end connects smoke filter(6);Unleaded smoke pipe(7)Upper close desulfurization removing nitric room(16)One end inner homogeneous be provided with water smoke Shower nozzle(141);The desulfurization removing nitric room(16)For seal cavity, air filtering plate is provided with the middle of cavity(15);The waterfog head (141)The water of ejection is limewash.
3. the device systems of a kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur according to claim 2, it is characterised in that described Desulfurization removing nitric room(16)Bottom connects first stage precipitation tank(17);The first stage precipitation tank(17)Connect second-level settling pond(18);Institute State second-level settling pond(18)Pass through circulating water pipe(14)Connect waterfog head(141).
4. the device systems of a kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur according to claim 1, it is characterised in that described Smoke-intake pipe(45)Inside it is provided with the division board of activity(46);The laying dust chamber(44)Lower end is provided with dust fall switch(13);It is described Division board(46)With dust fall switch(13)Controlled by magnetic valve and cylinder.
5. the device systems of a kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur according to claim 1, it is characterised in that described Main air inlet pipe(8)Caliber is more than auxiliary inlet manifold(9);The main air inlet pipe(8)Positioned at auxiliary inlet manifold(9)Top.
6. the device systems of a kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur according to claim 1, it is characterised in that described Vibrator(43)Positioned at orifice plate(41)Lower end.
7. the device systems of a kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur according to claim 1, it is characterised in that described Except lead cloth bag(42)Upper end connection fixing base(23);The fixed seat(23)It is uniformly arranged on fixed plate(22)On;It is described U-shaped cold But manage(19)Upper end passes through fixed seat(23)It is fixed.
8. the device systems of a kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur according to claim 1, it is characterised in that described U-shaped cooling tube(19)Outer surface is enclosed with cylindric separation sleeve(21);The separation sleeve(21)It is evenly arranged with outer surface cold Solidifying piece(211).
9. the device systems of a kind of electrolytic manganese anode Slag treatment lead nitrogen sulphur according to claim 1, it is characterised in that described Except lead cloth bag(42)Including outer layer cloth bag(421)With internal layer cloth bag(422);The outer layer cloth bag(421)With internal layer cloth bag(422) Between be evenly arranged with connect band(423).
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CN108588424B (en) * 2018-04-19 2019-12-24 西安建筑科技大学 Method for separating manganese and lead in electrolytic manganese anode slag

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