CN101597695B - Method for smelting zinc by electric heating rotary kiln - Google Patents
Method for smelting zinc by electric heating rotary kiln Download PDFInfo
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- CN101597695B CN101597695B CN2009100123886A CN200910012388A CN101597695B CN 101597695 B CN101597695 B CN 101597695B CN 2009100123886 A CN2009100123886 A CN 2009100123886A CN 200910012388 A CN200910012388 A CN 200910012388A CN 101597695 B CN101597695 B CN 101597695B
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Abstract
The invention provides a method for smelting zinc by an electric heating rotary kiln. Zinc ore powder and reducer are mixed and sent into an electric heating rotary pre-heating kiln for pre-heating, enters into an electric heating rotary zinc smelting kiln to finish processes of distillation zinc extracting, deslagging and air discharging after reaching preset temperature and time. In the invention, an electric heating rotary kiln zinc smelting device is used, and the processes of raw materials mixing, pre-heating and distilling are carried out, so that metal zinc is extracted from zinc ore in a closed state. Compared with traditional fire vertical pot zinc smelting method, the invention has the characteristics of low requirement on carbon containing reducer, respective and continuous implementation of pre-heating and zinc smelting, energy and time saving, high extraction rate of zinc, slight pollution and convenience for mechanical and automated control, thus being applicable in the field of zinc smelting.
Description
Technical field
What the present invention proposed is the Metal smelting method of field of metallurgy, specifically a kind of method of smelting zinc by electric heating rotary kiln.
Background technology
The method of extracting the zinc metallic element from zinc-bearing mineral mainly contains pyrogenic process, wet method.Wherein pyrogenic process is with zinc-bearing mineral and fat coal mixing clamp dog, drying, puts in perpendicular jar, lights stove fire, and material is heated up, and meanwhile, with zinc sulphide or zinc oxide reduction, evaporation back condensation becomes metallic zinc by carbon.Wet method then is the method for chemical metallurgy, by solvent the zinc lixiviate in the zinc-bearing mineral is come out, again through deviate from solvent or again with action of chemicals, transform, reduction becomes metallic zinc.
Wherein pyrometallurgy of zinc needs high-quality coal, needs to mix clamp dog, needs drying treatment, need single stove refining of stage at interval in perpendicular jar.So, waste high-quality coal resource, cost height; Need clamp dog, waste man-hour; Need drying, need the energy many; And flue gas directly discharges, and is big for environment pollution.As above all multifactor zinc metallurgy costs that causes are high, thus zinc metallurgy comprehensive cost height, the harm environment.
Summary of the invention
The present invention is directed to the deficiency of existing pyrometallurgy of zinc method, proposed a kind of method of smelting zinc by electric heating rotary kiln.This method solves the technical problem of electric heating zinc metallurgy by the pre-heating kiln of electrically heated and the preheating and the distillation of carrying out raw material of zinc metallurgy kiln of rotation.
The scheme that technical solution problem of the present invention is adopted is:
The smelting zinc by electric heating rotary kiln apparatus structure
Rear end at pre-heating kiln is provided with charging opening, is being provided with pre-heating kiln chamber in pre-heating kiln, around being installed on the pre-heating kiln rotating mechanism, in pre-heating kiln chamber pre-heating kiln electric heater is being installed in the periphery of pre-heating kiln; The bottom of pre-heating kiln front side is provided with blanking channel and communicates with the zinc metallurgy kiln, and blanking device is installed in blanking channel; Be provided with zinc metallurgy kiln chamber in the zinc metallurgy kiln, zinc metallurgy kiln periphery is installed on the zinc metallurgy kiln rotating mechanism, and zinc metallurgy kiln electric heater is installed in zinc metallurgy kiln chamber; Bottom at zinc metallurgy kiln rear side is connected with dreg discharging tunnel, and mucking machine is installed in it; Be connected with condenser down in zinc metallurgy kiln front side, which is provided with zinc outlet, on the condenser agitator is being installed down; Following condenser top is connected with vapor pipe and communicates with last condenser, is provided with exhanst gas outlet and pending waste pipe on last condenser top.
The zinc metallurgy process
A, zinc ore powder and reductive agent are mixed in proportion, become compound.
B, compound is joined by charging opening in the kiln chamber of pre-heating kiln, under electrically heated condition, carry out preheating and premix, form roasting material.
C, roasting material heat up in pre-heating kiln, premix, and make the reductive agent volatilization, and forming gaseous state, pre-heating kiln is subjected to the dynamic action of pre-heating kiln rotating mechanism when work, and constantly rotation makes material wherein be able to sufficient mixing.
D, mixed roasting material are subjected to the effect that pre-heating kiln kiln body rotates, and from the motion of inlet end forward end, behind the arrival blanking channel, are subjected to the effect of blanking device, and roasting material is transferred in the zinc metallurgy kiln.
E, in the zinc metallurgy kiln, material after the roasting continues the reductive action at the thermogenic action and the reductive agent of electric heater, and make the zinc metal be subjected to thermal evaporation in company with carbon oxide gas, when evaporative air arrives in the following condenser, be subjected to condensation, zinc vapor condensing becomes zinc liquid, under the effect of agitator, flow out by zinc outlet, cast the zinc ingot metal product.
F, import in the condenser by vapor pipe by the following mixed gas of condenser, separate, separate the back and take out blue zinc, gained waste gas forms pending waste gas, and by pending waste pipe discharge, incondensible waste gas is discharged by exhanst gas outlet.
Positively effect, the present invention adopts the smelting zinc by electric heating rotary kiln device, by mixing, preheating and the still-process of raw material, extracts the zinc metal from zinc ore under the state of sealing.Compare with traditional pyrogenic process zinc vertical retorting, have and carbon containing reducer is required low, preheating and zinc metallurgy are saved energy and time respectively continuously, and zinc extraction yield height pollutes for a short time, is convenient to the characteristics that mechanize and automatization are controlled.Suit in the zinc metallurgy field, to use.
Description of drawings
Fig. 1 is a smelting zinc by electric heating rotary kiln setting drawing of the present invention
Fig. 2 is a zinc metallurgy procedure chart of the present invention
Among the figure, 1. charging opening, 2. pre-heating kiln, the pre-heating kiln of 2.1. chamber, 2.2. pre-heating kiln rotating mechanism, the pre-heating kiln electric heater of 2.3., 3. blanking channel, 4. blanking device, 5. zinc metallurgy kiln, 5.1. zinc metallurgy kiln chamber, 5.2. zinc metallurgy kiln rotating mechanism, 5.3. zinc metallurgy kiln electric heater, 6. dreg discharging tunnel, 7. mucking machine 8. descends condenser, 9. zinc outlet, 10. agitator, 11. vapor pipes, 12. last condenser, 13. exhanst gas outlets, 14. pending waste pipes.
Embodiment
The smelting zinc by electric heating rotary kiln apparatus structure
According to shown in Figure 1, be provided with charging opening 1 in the rear end of pre-heating kiln 2, in pre-heating kiln, be provided with pre-heating kiln chamber 2.1, around being installed on the pre-heating kiln rotating mechanism 2.2, in pre-heating kiln chamber, pre-heating kiln electric heater 2.3 is being installed in the periphery of pre-heating kiln; The bottom of pre-heating kiln front side is provided with blanking channel 3 and communicates with zinc metallurgy kiln 5, and blanking device 4 is installed in blanking channel; Be provided with zinc metallurgy kiln chamber 5.1 in the zinc metallurgy kiln, zinc metallurgy kiln periphery is installed on the zinc metallurgy kiln rotating mechanism 5.2, and zinc metallurgy kiln electric heater 5.3 is installed in zinc metallurgy kiln chamber; Bottom at zinc metallurgy kiln rear side is connected with dreg discharging tunnel 6, and mucking machine 7 is installed in it; Be connected with condenser 8 down in zinc metallurgy kiln front side, which is provided with zinc outlet 9, on the condenser agitator 10 is being installed down; Following condenser top is connected with vapor pipe 11 and communicates with last condenser 12, is provided with exhanst gas outlet 13 and pending waste pipe 14 on last condenser top.
Following condenser is identical with existing zinc metallurgy device with last structure of condenser.
Mucking machine is spiral tapping machine structure or carrier bar mucking machine structure.
Blanking device is the scraper plate drive mechanism.
Electric heater adopts globars or has the resistant to elevated temperatures electric heating body of armouring crust.
Electric heater needs supporting switch circuit and temperature regulation circuit, by electrical heating controller control and the intravital state of temperature of adjusting kiln.
Pre-heating kiln and zinc metallurgy kiln are worked under rotating state.
The driving roll of pre-heating kiln and the zinc metallurgy kiln gear ring by being located at the external side of kiln and its underpart support is power transmission mutually.
The zinc metallurgy process
According to illustrated in figures 1 and 2, its process steps is:
A, zinc ore powder and reductive agent are mixed in proportion, become compound.
B, compound is joined by charging opening in the kiln chamber 2.1 of pre-heating kiln 2, under electrically heated situation, carry out preheating and premix, form roasting material.
C, roasting material heat up in pre-heating kiln, premix, and make the reductive agent volatilization, and forming gaseous state, pre-heating kiln is subjected to the dynamic action of pre-heating kiln rotating mechanism 2.2 when work, and constantly rotation makes material wherein be able to sufficient mixing.
D, mixed roasting material are subjected to the effect that pre-heating kiln kiln body rotates, and from the motion of inlet end forward end, behind the arrival blanking channel 3, are subjected to the effect of blanking device 4, and roasting material is transferred in the zinc metallurgy kiln 5.
E, in the zinc metallurgy kiln, material after the roasting continues the reductive action at the thermogenic action and the reductive agent of electric heater, and make the zinc metal be subjected to thermal evaporation in company with carbon oxide gas, when evaporative air arrives in the following condenser 8, be subjected to condensation, zinc vapor condensing becomes zinc liquid, under the effect of agitator 10, flow out by zinc outlet 9, cast the zinc ingot metal product.
F, import in the condenser 12 by vapor pipe by the following mixed gas of condenser, separate, separate the back and take out blue zinc, gained waste gas forms pending waste gas, discharges by pending waste pipe, and incondensible waste gas is by exhanst gas outlet 13 discharges.
The preheating firer is controlled at 500-600 degree centigrade as temperature, and the zinc metallurgy firer is controlled at 1250-1350 degree centigrade as temperature.
The present invention compares with traditional pyrometallurgy of zinc, and its advantage is:
What 1, zinc ore powder and reducing agent can the Direct particle shapes mixes, and has omitted the process of briquetting and oven dry, so not only improved effect, has also saved energy resource consumption, has realized energy-conservation effect. Especially can use inexpensive common coal to make reducing agent, need not expensive coke or coal. Can the decrease production cost.
2, zinc raw material automatic flowing in preheating kiln and zinc metallurgy kiln has formed mechanical serialization production, and the link in the middle of having reduced has not only improved effect, has reduced link, has also reduced the pollution of smoke spillage to environment.
3, because the serialization of zinc metallurgy process is convenient to control the operation of production equipment, reduce expenditure of time, reduced labour intensity.
4, owing to the zinc metallurgy of employing this method is carried out in revolution zinc metallurgy kiln device, and apparatus structure is rigorous, so production efficiency is also higher.
Claims (2)
1. the method for a smelting zinc by electric heating rotary kiln is characterized in that:
The smelting zinc by electric heating rotary kiln apparatus structure:
Rear end at pre-heating kiln (2) is provided with charging opening (1), in pre-heating kiln, be provided with pre-heating kiln chamber (2.1), in the periphery of pre-heating kiln around pre-heating kiln rotating mechanism (2.2) is installed, in pre-heating kiln chamber, pre-heating kiln electric heater (2.3) is installed, the bottom of pre-heating kiln front side is provided with blanking channel (3) and communicates with zinc metallurgy kiln (5), blanking device (4) is installed in blanking channel, be provided with zinc metallurgy kiln chamber (5.1) in the zinc metallurgy kiln, zinc metallurgy kiln periphery is installed on the zinc metallurgy kiln rotating mechanism (5.2), zinc metallurgy kiln electric heater (5.3) is installed in zinc metallurgy kiln chamber, be connected with dreg discharging tunnel (6) in the bottom of zinc metallurgy kiln rear side, mucking machine (7) is installed in it, be connected with condenser (8) down in zinc metallurgy kiln front side, which is provided with zinc outlet (9), on the condenser agitator (10) is being installed down, following condenser top is connected with vapor pipe (11) and communicates with last condenser (12), is provided with exhanst gas outlet (13) and pending waste pipe (14) on last condenser top;
The zinc metallurgy process:
A, zinc ore powder and reductive agent are mixed in proportion, become compound;
B, compound is joined in the pre-heating kiln chamber (2.1) of pre-heating kiln (2) by charging opening, under electrically heated condition, carry out preheating and premix, form roasting material;
C, roasting material heat up in pre-heating kiln, premix, and make the reductive agent volatilization, and forming gaseous state, pre-heating kiln is subjected to the dynamic action of pre-heating kiln rotating mechanism (2.2) when work, and constantly rotation makes material wherein be able to sufficient mixing;
D, mixed roasting material are subjected to the effect that pre-heating kiln kiln body rotates, and from the motion of inlet end forward end, behind the arrival blanking channel (3), are subjected to the effect of blanking device (4), and roasting material is transferred in the zinc metallurgy kiln (5);
E, in the zinc metallurgy kiln, material after the roasting continues under the reductive action of the thermogenic action of electric heater and reductive agent, and make the zinc metal be subjected to thermal evaporation in company with carbon oxide gas, evaporative air arrives when condenser (8) is middle down, be subjected to condensation, zinc vapor condensing becomes zinc liquid, under the effect of agitator (10), flow out by zinc outlet (9), cast the zinc ingot metal product;
F, import in the condenser (12) by vapor pipe by the following mixed gas of condenser, separate, separate the back and take out blue zinc, gained waste gas forms pending waste gas, discharge by pending waste pipe, incondensible waste gas is discharged by exhanst gas outlet (13).
2. zinc metallurgy method according to claim 1 is characterized in that: the preheating firer is controlled at 500-600 degree centigrade as temperature, and the zinc metallurgy firer is controlled at 1250-1350 degree centigrade as temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100123886A CN101597695B (en) | 2009-07-07 | 2009-07-07 | Method for smelting zinc by electric heating rotary kiln |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100123886A CN101597695B (en) | 2009-07-07 | 2009-07-07 | Method for smelting zinc by electric heating rotary kiln |
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| CN101597695A CN101597695A (en) | 2009-12-09 |
| CN101597695B true CN101597695B (en) | 2010-09-01 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353250B (en) * | 2011-11-02 | 2013-09-25 | 徐建成 | Zinc-cadmium electric heating smelting rotary kiln |
| CN103014372A (en) * | 2012-12-17 | 2013-04-03 | 葫芦岛炼锌厂 | Zinc smelting device for gas rotary kiln |
| CN104313350B (en) * | 2014-10-14 | 2016-08-24 | 石家庄新华能源环保科技股份有限公司 | A kind of dividing wall type refining magnesium rotary kiln |
| CN108699626A (en) * | 2016-01-29 | 2018-10-23 | 安雅穆科斯工程公司 | For the method by zinc oxide carbon thermal reduction for zinc |
| CN109097575B (en) * | 2018-09-10 | 2020-06-05 | 中国恩菲工程技术有限公司 | Method for extracting zinc element from low-grade lead-zinc ore |
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Granted publication date: 20100901 Termination date: 20180707 |