CN204324915U - A kind of zinc oxide purification furnace - Google Patents
A kind of zinc oxide purification furnace Download PDFInfo
- Publication number
- CN204324915U CN204324915U CN201420711580.0U CN201420711580U CN204324915U CN 204324915 U CN204324915 U CN 204324915U CN 201420711580 U CN201420711580 U CN 201420711580U CN 204324915 U CN204324915 U CN 204324915U
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- Prior art keywords
- flue
- burner hearth
- zinc oxide
- zinc
- coal gas
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Abstract
The utility model relates to a kind of zinc oxide purification furnace, comprises furnace bottom, fire door, thermal insulation layer, flame retardant coating, flue outlet, ventilation oxidation mouth, flue, burner hearth, carbonizing flame, coal gas burner, open holes; Described furnace bottom, fire door, thermal insulation layer, flame retardant coating form cylindrical burner hearth, upwards form circular cone, transition is flue; The side of described burner hearth, is provided with coal gas burner, by controlling the ratio of coal gas and air, realizes carbonizing flame, makes burner hearth be reducing atmosphere, maintain 1150 DEG C--and 1250 DEG C; Described open holes is used for penetrating high-temperature spiral feed reactor, can provide tutty and coke powder compound continuously, and be reduced into metallic zinc in its front end, be sublimed into gaseous state zinc, rises and enters flue; Flue has controlled ventilation oxidation mouth, the vigorous oxidation reaction of gaseous state zinc can be realized.The utility model does thermal source with coal gas, and reduction reaction is separated with oxidizing reaction, and oxidizing reaction is violent, and the high pure zinc oxide particle of formation is superfine little.
Description
Technical field
The utility model relates to a kind of zinc oxide purification furnace, belong to the equipment of industrial product field of high temperature reduction reaction, form especially by gas-fired that reducing atmosphere, reduction reaction district are separated with oxidation reaction zone, the zinc oxide purification furnace of air port vigorous oxidation reaction.
Background technology
At present, most domestic produces the enterprise of zinc oxide, and adopting indirect method, is namely raw material with zinc ingot metal, makes its gasification that distils through heating, then reacts with the oxygen in air and generate zinc oxide, falls into collection device, thus obtain Industrial products zinc oxide after cooling.
But in industrial production and life, normal exist the assorted material of some useless zinc.These useless zinc is assorted expects source complexity, containing zinc wide ranges.Such as, cadmia, zinc gray, band soil zinc particle is produced during steel part pot galvanize; Some useless galvanized workpieces can not re-use and enter waste material; Galvanized workpiece adds the corner cut man-hour; The waste residue also having smelting Zn Cr coating to produce, a small amount of zinc ore material; And the flue dust etc. being rich in zinc produced in Iron and Steel Production.Usually include dust, stone, steel part etc. in the assorted material of these useless zinc, Zn content is often on the low side, due to not convenient use, is often deposited in corner, causes the deterioration of surrounding environment under exposing to wind and rain.Therefore, the valuable zinc resource utilizing useless zinc to mix in material, not only can realize the regeneration of resource, reduces production cost, increases economic efficiency, but also can beautify the environment, and increases social benefit.
In production, for containing the high waste material of zinc, the normal Technology For Remelting that adopts makes zinc recovering; The waste material of the stable Zn content of some single sources, can adopt chemical reaction flows.But for scattered retrieve, the assorted material of the zinc that to give up containing the mixed type that zinc range is large, there is certain difficulty in regeneration in industrial production.
For the assorted material of so useless zinc, rotary kiln is adopted to carry out one-level distillation, useless zinc is mixed, and the pure zinc in expecting directly distils, zinc oxide distillation after carbon reduction, gaseous metal zinc oxidation subsequently also forms solid zinc oxide particle in refrigerating unit, just can remove the composition such as dust, stone, iron and steel in the assorted material of useless zinc, obtain the tutty containing zinc oxide 70%--80%.
Prior art Problems existing is that tutty and coke powder first need make pelletizing, and pelletizing is concentrated and entered reduction zone, and the former reduction reaction of tutty is uneven, and hot gas flow is unstable, affects oxidizing reaction rear oxidation zinc and collects by granular size classification; Adopt cell-type oxidation technology, oxidizing reaction is inviolent, and Zinc oxide particles is larger.
The utility model forms reducing atmosphere by gas-fired, adopts the compound providing tutty and coke powder composition continuously, and reduction reaction evenly, continuously; Adopt air port, strange land oxidation technology, oxidizing reaction is violent, and the Zinc oxide particles of formation is tiny.
The technique of the utility model purification zinc oxide is, is broken into by coking coal powder and is less than 40 object fine powder materials, and mix by a certain percentage with tutty, put into the hopper of high-temperature spiral feed reactor, evenly sends into burner hearth 8, and spreads out in burner hearth 8; In reducing atmosphere, zinc oxide is reduced into metallic state zinc, and is sublimed into gaseous state; Reduction reaction is as follows:
C+O
2= CO
2↑ ；
CO
2+C = 2CO↑；
ZnO+CO = Zn(g)↑+CO
2↑；
ZnO·Fe
2O
3+CO = ZnO+2FeO+ CO
2↑。
When temperature is more than 1050 DEG C (normal employing 1100 DEG C--1300 DEG C), above-mentioned reaction is carried out rapidly; Simultaneous oxidation iron is reduced to metallic iron, further facilitates the reduction of zinc oxide:
ZnO+ Fe == FeO+ Zn(g)↑。
Gaseous state zinc rises and enters flue 7, when arriving ventilation oxidation mouth 6, with the oxygen in air, violent oxidizing reaction occurs, forms very tiny grain-like zinc-oxide.Zinc oxide cools in bucket type cooling collection device, and enters in different collection buckets by granular size, realizes by granular size classification.
Summary of the invention
The technical problems to be solved in the utility model is by thermal process, by reduction-distillation-oxidising process, completes purification and the grain refine of tutty.For this reason, the utility model provides a kind of zinc oxide purification furnace, comprises furnace bottom (1), fire door (2), thermal insulation layer (3), flame retardant coating (4), flue outlet (5), ventilate oxidation mouth (6), flue (7), burner hearth (8), carbonizing flame (9), coal gas burner (10), open holes (11); Described furnace bottom (1) is refractory brick tiling formed on the ground with refractory mortar; On furnace bottom (1), be built into burner hearth (8) with refractory mortar and refractory brick; Again upwards, refractory brick inwardly shrinks size gradually when building a wall, and final and flue (7) consistent size, forms truncated cone-shaped; Again upwards, refractory brick is turned gradually when building a wall, and forms the flue (7) of horizontal structure; Turn the side at flat rear 3000--5000mm place at flue, have the ventilation communicated with air and be oxidized mouth (6); Refractory brick, as flame retardant coating (4), is built and is had insulating brick, as thermal insulation layer (3) outside it; On the bottom thermal insulation layer, flame retardant coating of burner hearth (8) side, have open holes (11), pore size is consistent with the external diameter of high-temperature spiral feed reactor; At the 200--500 mm place, top of open holes (11), through thermal insulation layer, flame retardant coating, coal gas burner (10) is installed; On the opposite of open holes (11), fire door (2) is installed.
Described burner hearth (8) be refractory mortar and refractory brick be built into internal diameter 300--1000mm, high 400--1000 mm columnar structured; Refractory mortar and refractory brick material need stand 1150 DEG C for a long time--the reducing atmosphere that the carbonizing flame (9) that 1250 DEG C of high temperature and coal gas burner (10) spray is formed.
The utility model compared with prior art, there is following significant advantage: the utility model structure is simple, form reducing atmosphere with gas-fired and maintain high temperature, away from the flue of reduction zone being offered the oxidation mouth that ventilates, achieve effectively being separated of reduction reaction and oxidizing reaction, and air port oxidation technology makes oxidizing reaction violent, Zinc oxide particles becomes very tiny.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model; Wherein: 1, furnace bottom, 2, fire door, 3, thermal insulation layer, 4, flame retardant coating, 5, flue outlet, 6, ventilate oxidation mouth, 7, flue, 8, burner hearth, 9, carbonizing flame, 10, coal gas burner, 11, open holes.
Embodiment
Known see accompanying drawing 1, the utility model is specifically related to a kind of zinc oxide purification furnace, be applicable to the purification of tutty, this zinc oxide purification furnace mainly comprises furnace bottom 1, fire door 2, thermal insulation layer 3, flame retardant coating 4, flue outlet 5, ventilate oxidation mouth 6, flue 7, burner hearth 8, carbonizing flame 9, coal gas burner 10, open holes 11.Wherein, furnace bottom 1, fire door 2, thermal insulation layer 3, flame retardant coating 4 form cylindrical burner hearth 8, and upwards form circular cone, transition is flue 7.In the side of burner hearth, coal gas burner 10 is installed, ejection carbonizing flame 9, makes burner hearth 8 in reducing atmosphere, and maintain 1150 DEG C--1250 DEG C.Open holes 11 is for penetrating high-temperature spiral feed reactor, the raw material of tutty powder and coking coal powder composition can be made to send into burner hearth 8 continuously, and form metallic zinc in high-temperature spiral feed reactor front end reduction reaction, and then be sublimed into gaseous state zinc, rising with air-flow enters flue 7.Flue 7 has that communicate with air, controlled ventilation oxidation mouth 6, the vigorous oxidation reaction of gaseous state zinc can be realized, form high pure zinc oxide particulate, enter cooling collection device with hot gas flow through flue outlet 5.
Utility model works process is: pass into coal gas, air to coal gas burner 10, light, and regulates the flow proportional of coal gas and combustion air, forms carburizing flame 9, and makes the temperature in burner hearth 8 maintain 1150 DEG C--1250 DEG C; In the hopper of high-temperature spiral feed reactor, load the compound of tutty and thin coke powder, open the motor of high-temperature spiral feed reactor, to burner hearth 8 continuous feeding.The compound of tutty and thin coke powder spreads out in the front end of high-temperature spiral feed reactor, contacts with Deoxidation Atmosphere in Furnace, makes zinc oxide produce reduction reaction, generates metallic zinc, and then be sublimed into gaseous state zinc, and rising with hot gas flow enters flue 7; Gaseous state zinc in flue 7, when being oxidized mouth 6 through ventilating, producing violent oxidizing reaction with the oxygen in air, forming zinc oxide fine particles.Zinc oxide fine particles enters in bucket type cooling collection device with hot gas flow and cools, different by granular size, enters in different collection buckets, realizes pressing gradation; Under vacuum fan draft, tail gas discharges bucket type cooling collection device, enters mist dust remover, is tackled by solia particle, and be discharged in air by pure waste gas; Before every day opening device, open fire door 1, the residual waste of remaining minute quantity after tutty reduction is scavenged into outside stove.
While the utility model can improve realizing purity zinc oxide, refinement Zinc oxide particles.
Claims (2)
1. a zinc oxide purification furnace, it is characterized in that, comprise furnace bottom (1), fire door (2), thermal insulation layer (3), flame retardant coating (4), flue outlet (5), ventilate oxidation mouth (6), flue (7), burner hearth (8), carbonizing flame (9), coal gas burner (10), open holes (11); Described furnace bottom (1) is refractory brick tiling formed on the ground with refractory mortar; On furnace bottom (1), be built into burner hearth (8) with refractory mortar and refractory brick; Again upwards, refractory brick inwardly shrinks size gradually when building a wall, and final and flue (7) consistent size, forms truncated cone-shaped; Again upwards, refractory brick is turned gradually when building a wall, and forms the flue (7) of horizontal structure; Turn the side at flat rear 3000--5000mm place at flue, have the ventilation communicated with air and be oxidized mouth (6); Refractory brick, as flame retardant coating (4), is built and is had insulating brick, as thermal insulation layer (3) outside it; On the bottom thermal insulation layer, flame retardant coating of burner hearth (8) side, have open holes (11), pore size is consistent with the external diameter of high-temperature spiral feed reactor; At the 200--500 mm place, top of open holes (11), through thermal insulation layer, flame retardant coating, coal gas burner (10) is installed; On the opposite of open holes (11), fire door (2) is installed.
2. a kind of zinc oxide purification furnace according to claim 1, is characterized in that, described burner hearth (8) be refractory mortar and refractory brick be built into internal diameter 300--1000mm, high 400--1000 mm columnar structured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711580.0U CN204324915U (en) | 2014-11-25 | 2014-11-25 | A kind of zinc oxide purification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420711580.0U CN204324915U (en) | 2014-11-25 | 2014-11-25 | A kind of zinc oxide purification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204324915U true CN204324915U (en) | 2015-05-13 |
Family
ID=53161295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420711580.0U Expired - Fee Related CN204324915U (en) | 2014-11-25 | 2014-11-25 | A kind of zinc oxide purification furnace |
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| Country | Link |
|---|---|
| CN (1) | CN204324915U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055588A (en) * | 2017-04-19 | 2017-08-18 | 昆山宇顺环保科技有限公司 | A kind of melting recycling processing method of incineration of refuse flyash |
-
2014
- 2014-11-25 CN CN201420711580.0U patent/CN204324915U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055588A (en) * | 2017-04-19 | 2017-08-18 | 昆山宇顺环保科技有限公司 | A kind of melting recycling processing method of incineration of refuse flyash |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20151125 |