CN108866320A - A kind of method of the production of chlorination process integration heavy zinc oxide and fire concentrate impurity - Google Patents
A kind of method of the production of chlorination process integration heavy zinc oxide and fire concentrate impurity Download PDFInfo
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- CN108866320A CN108866320A CN201810778227.7A CN201810778227A CN108866320A CN 108866320 A CN108866320 A CN 108866320A CN 201810778227 A CN201810778227 A CN 201810778227A CN 108866320 A CN108866320 A CN 108866320A
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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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/08—Chloridising roasting
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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
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
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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
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
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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
- C22B19/34—Obtaining zinc oxide
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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
- C22B19/34—Obtaining zinc oxide
- C22B19/38—Obtaining zinc oxide in rotary furnaces
-
- 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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
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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
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/06—Obtaining bismuth
-
- 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
- C22B41/00—Obtaining germanium
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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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
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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
- C22B58/00—Obtaining gallium or indium
Abstract
The invention discloses a kind of methods of chlorination process integration production heavy zinc oxide and fire concentrate impurity, first of technical process is using the zinc solid waste of fluorine-containing chlorine as chlorinating agent, in carbon reducing environment, utilize the metallurgical equipments such as Webster furnace, revolution Rotary Kiln, reduction volatilization and chloridizing volatilization reaction and oxidation reaction occur for each metal of zinc, lead, nickel, silver, indium, germanium, bismuth, raw material zinc oxide is prepared, above-mentioned metal enters product in the form of oxide, chloride and the object phase of fluoride or intermediate compound；Second technical process carries out high-temperature calcination by raw material of first of product, a small amount of zinc chloride continues that a small amount of chlorination reaction occurs in raw material zinc oxide, chloride with fluoride collect at flue gas through dust collecting system at high temperature by dispensing volatile, obtains the chloride and fluoride product of leaded equal metals；Realize the separation with zinc metal, simultaneous oxidation Zn content greatly improves, and zinc oxide molecular structure under high temperature action generates variation, obtains product heavy zinc oxide.
Description
Technical field
The invention belongs to smelting field of nonferrous metal, and in particular to a kind of chlorination process integration production heavy zinc oxide and fire
The new method of method separation impurity.
Background technique
Heavy zinc oxide is a kind of important ceramic chemical industry flux raw material, than great, good fluidity, and the glaze produced with it
Expect that shrinkage is small, glaze paint is less prone to pin hole and crackle, especially in architectural pottery Wall or floor tile glaze and low temperature glaze and ceramics
Colorant dosage is more.It is also widely used in art pottery glaze.Effect and purposes in glaze：Heavy zinc oxide has in glaze
Stronger fluxing action can reduce the coefficient of expansion of glaze, improve the thermal stability of product, at the same can increase the gloss of glaze paint with
Whiteness improves the elasticity of glaze.The brilliance of glaze colours can be increased while expanding fusion range.
Traditional heavy zinc oxide is that the American process zinc oxide for being 98% to 99% with content is produced through calcining kiln calcining, raw
The heavy zinc oxide content of output is 99% to 99.5%, and specific gravity is common four times of zinc oxide or so.This production method is produced into
This height, price are high, it is difficult to be acceptable to the market.
There is a kind of method to be used by some heavy zinc oxide manufacturer in recent years, and used ammonia process or acid system extract
Zinc metal in material, then replaced with sodium carbonate or ammonium carbonate, zinc carbonate is obtained, zinc carbonate is forged with calcining kiln again
It burns, obtains product heavy zinc oxide.The raw material that such method uses are zinc calcine or Second-rate zinc oxide powder, and zinc calcine is zinc essence
The product of mine roasting, secondary zinc oxide are the products that revolution Rotary Kiln production is blended in zinc oxide ore or cadmia zinc gray and carbon,
The impurity element of zinc calcine and secondary zinc oxide such as lead etc. enters leached mud, transfers to qualified business processes as hazardous waste.
This production method process is complicated, and investment is big, and the waste residue and cost for wastewater treatment that production process generates are high, and in raw material in addition to
Valuable metal dilution in slag other than zinc, processing difficulty are big.
There are many disadvantages for both the above method, such as：
Above-mentioned traditional heavy zinc oxide production method is calcined using direct method high grade zinc oxide as raw material, the cost of raw material
Height, high production cost, product quality is not more excellent than other modes, and this production method gradually exits city due to high cost
?.
The above-mentioned wet production zinc oxide used in recent years, production cost is lower than conventional method, but production procedure is complicated, lead
Equal valuable metals can not be enriched with and dilution, and waste water and dregs processing cost is high.
Above two production method has the shortcomings that obvious, and the present invention effectively overcomes these disadvantages, provides a kind of low
The method of the production heavy zinc oxide of cost, simple process, while the metals such as lead, silver, indium, germanium, bismuth are enriched with, and realize solid
The comprehensive reutilization of the recycling of waste, flue dust are a kind of byproducts of high added value.
Summary of the invention：
The main object of the present invention is to provide the method for a kind of production of chlorination process integration heavy zinc oxide and fire concentrate impurity,
This method is used in combination chloride volatility process technique and chloridising roasting partition method technique, handles multi-metal oxygen zinc ore, with realize zinc,
Chloridizing volatilization, the reduction volatilization of the rare precious metals such as the non-ferrous metals such as lead, nickel and silver, indium, germanium, bismuth, realize zinc and lead, nickel, silver,
The fire concentrate of the metals such as indium, germanium, bismuth produces heavy zinc oxide, while isolating the non-ferrous metals such as lead, nickel, silver, indium, germanium, bismuth
Element and rare precious metal.The target of chloridizing volatilization technique is achieved that using revolution Rotary Kiln and Webster furnace, just using calcining kiln
The target of chloridising roasting separating technology may be implemented.
It the purpose of the present invention and solves its technical problem underlying and adopts the following technical solutions to realize：
A kind of method of the production of chlorination process integration heavy zinc oxide and fire concentrate impurity, including chloridizing volatilization technique and chlorination
Being used in combination for baking separation technique and two kinds of technique, is combined into a kind of new combined technique；Specially：First
Technical process-chloridizing volatilization technical process, using fluorine-containing, chlorine solid waste cadmia zinc gray as chlorinating agent, with multi-metal oxygen zinc
Mine and carbon are mixed and made into nodulizing.In the high temperature reducing atmospheres that carbon burning and reduction process provide, zinc, lead, nickel, silver, indium, germanium,
Chlorination reaction, reduction reaction occur for the metals such as bismuth, oxidation reaction occur simultaneously under the action of oxygen, zinc is with reduction reaction and oxygen
Change based on reaction, along with a small amount of chlorination reaction；The metals such as lead, nickel, silver, indium, germanium, bismuth based on chlorination reaction, along with
A small amount of reduction reaction and oxidation reaction；By this technique extract zinc oxide ore in metal, produce leaded, nickel, silver, indium,
The raw material zinc oxide of the metals such as germanium, bismuth；Realize that the metallurgical equipments such as revolution Rotary Kiln, Webster furnace can be used in this technical process.Second
Road technical process-chloridising roasting separation process, the raw material zinc oxide produced using first of technical process as raw material, with
Coal gas is fuel, is calcined in calcining kiln, is occurred in high temperature and environment containing a small amount of reducing agent carbon monoxide and hydrogen
Chlorination reaction, a small amount of zinc chloride in raw material zinc oxide are decomposed reaction, and zinc oxide is generated；Lead, nickel, silver, indium, germanium, bismuth etc.
Chlorination reaction occurs for the oxide of metal, generates the chloride and fluoride of the metals such as lead, nickel, silver, indium, germanium, bismuth, chloride with
Fluoride volatilizing and enriching obtains the flue dust of the metals such as high leaded, nickel, silver, indium, germanium, bismuth, realizes the separation with zinc metal, simultaneously
Zinc oxide content greatly improves, and zinc oxide molecular structure under high temperature action generates variation, obtains product heavy zinc oxide.
The chloridizing volatilization technique, the chemistry according to the chemical component of raw material of processing, the cadmia zinc gray of fluorine-containing chlorine
Ingredient, coal selection of chemical composition reasonably match, a variety of materials proportion by each element participate in respective reaction process institute
The molal quantity needed, which matches, to be calculated, and the raw material prepared is pressed into pelletizing, is volatilized in Webster furnace, revolution Rotary Kiln metallurgical equipment
Roasting.
The principle of the chloridizing volatilization technique is：Chloridizing volatilization technical process have occurred chlorination reaction, reduction reaction and
Oxidation reaction.
The reaction process of chlorination reaction：
2PbO(s)+C(s)+ ZnF2(s)+ZnCl2(s)=2PbFCl(s)+CO2(g)+Zn(g)；
4PbO(s)+C(s)+ ZnF2(s)+ZnCl2(s)=2Pb2FClO(s)+CO2(g)+Zn(g)；
2PbO(s)+C(s)+2ZnCl2(s)=2PbCl2(s)+CO2(g)+Zn(g)；
2PbO(s)+ 2AgO(s)+C(s)+2ZnCl2(s)=2PbCl2▪ AgO (s)+CO2(g)+Zn(g)；
2AgO(s)+C(s)+2ZnCl2(s)=2AgCl2(s)+CO2(g)+Zn(g)；
2NiO(s)+C(s)+2ZnCl2(s)=2NiCl2(s)+CO2(g)+Zn(g)；
2InO(s)+C(s)+2ZnCl2(s)=2InCl2(s)+CO2(g)+Zn(g)；
2GeO(s)+C(s)+2ZnCl2(s)=2GeCl2(s)+CO2(g)+Zn(g)；
2BiO(s)+C(s)+2ZnCl2(s)=2BiCl2(s)+CO2(g)+Zn(g)；
2PbO(s)+C(s)+2ZnF2(s)=2PbF2(s)+CO2(g)+Zn(g)；
2AgO(s)+C(s)+2ZnF2(s)=2AgF2(s)+CO2(g)+Zn(g)；
2InO(s)+C(s)+2ZnF2(s)=2InF2(s)+CO2(g)+Zn(g)；
2GeO(s)+C(s)+2ZnF2(s)=2GeF2(s)+CO2(g)+Zn(g)；
2BiO(s)+C(s)+2ZnF2(s)=2BiF2(s)+CO2(g)+Zn(g)；
The reaction process of reduction reaction：
ZnO(s)+CO(g)=Zn(g)+CO2(g)；
PbO(s)+CO(g)=Pb(g)+CO2(g)；
The reaction process of oxidation reaction：
Zn(g)+O2(g)=ZnO(s)；
Pb(g) +O2(g)=PbO(s)；
This process chloridizing volatilization technique has the characteristics that preference, is sorted according to the affinity that metal is reacted with chlorine：Ag >
Ni > Pb > Bi > In > Ge > Zn > Mn > Al, lead, nickel, silver, indium, germanium, bismuth are under the conditions of certain temperature, in carbon also Primordial Qi
In atmosphere, chlorination reaction occurs for preferential selection, generates the metal chloride and fluoride of lead, nickel, silver, indium, germanium, bismuth, chloride with
Fluoride has the property of low melting point and high volatile, at high temperature with flue gas dispensing volatile；Silver has very strong affine with lead
Power, some silver is reacted with lead, chlorine generates complicated compound PbCl2AgO equally has very strong volatilization at high temperature
Property, with flue gas dispensing volatile.No carbon reduction in the case where, germanium, indium oxide be difficult to be chlorinated, but carbon reduction gas
Under atmosphere, very strong chlorination reaction can occur for germanium and indium.Since zinc chloride has high volatile under the high temperature conditions, also have a small amount of
Zinc chloride be volatized into product.Lead, nickel, silver, indium, germanium, bismuth also have a small amount of participation reduction reaction and oxidation reaction generates oxygen
Compound enters product.The key reaction of zinc is based on reduction reaction and oxidation reaction, and most zinc are mutually entered with the object of zinc oxide
Product.Due to the mutual comprehensive function of chloride and fluoride and reducing agent carbon, this process is returned than carbon reducing metal is used alone
High income, the product of this process are referred to as raw material zinc oxide, the metal chlorides such as leaded, nickel, silver, indium, germanium, bismuth and fluoride.
The chloridising roasting separating technology, in calcining kiln, using heated by gas, temperature reaches 1273K to 1473K,
Above-mentioned raw material zinc oxide is added to be calcined, there are also a small amount of CO and H in coal gas2Reducing environment is provided, chlorination reaction is promoted,
The further chlorination of zinc chloride in raw material zinc oxide is the metal oxide of lead.
The principle of the chloridising roasting separating technology is：The chemical equation of this process is as follows：
2PbO(s)+CO(s)+2ZnCl2(s)=2PbCl2(s)+CO2(g)+ZnO(s)；
2PbO(s)+ H2 (s)+2ZnCl2(s)=2PbCl2(s)+ H2O(g)+ZnO(s)；
The chloride and fluoride of lead, nickel, silver, indium, germanium, bismuth etc. all have the characteristics that low melting point, high volatile, above-mentioned raw material oxygen
The chloride and fluoride and newly-generated chloride and fluoride changed in zinc are volatilized into cigarette in the hot environment of calcining kiln
Gas, flue gas are filtered by dust collecting system, realize gas solid separation, and collection obtains the flue dust of chloride and fluoride containing above-mentioned element,
This flue dust has the byproduct of high added value, is a kind of good raw material of industry.
Feature of present invention first is that：While providing a kind of method for producing heavy zinc oxide, processing is solid containing Zn Cr coating
Body waste and hazardous waste do not need another chlorination agent, have realized the minimizing and resource utilization of solid waste, but also not only with waste
In zinc chloride as industrial chemicals chlorinating agent, saved cost, improved production efficiency.
Feature of present invention second is that：While providing a kind of method for producing heavy zinc oxide, using solid containing Zn Cr coating
Body waste and hazardous waste are chlorinating agent, extract the valuable metal in multi-metal oxygen zinc ore, realize zinc and lead, nickel, silver, indium,
The fire concentrate of the metals such as germanium, bismuth, the metals such as lead, nickel, silver, indium, germanium, bismuth are enriched in flue dust, become a kind of high added value
Byproduct.
Feature of present invention third is that：A kind of new side directly being produced heavy zinc oxide using multi-metal oxygen zinc ore is provided
Method, but separate and be extracted the new method of a variety of valuable metals, be it is a kind of achieve many things at one stroke, low cost, high yield production heavy
The new method of zinc oxide.
To sum up, the present invention has clear advantage compared with other technologies, i.e. simple process, environmental protection, product is of fine quality, raw
Produce high-efficient, production cost is low etc..The present invention not only realizes the target of production heavy zinc oxide, but also has handled multi-metal oxygen zinc
Mine, and handled solid waste containing Zn Cr coating, realizes the comprehensive reutilization of resource, may be implemented relatively high economic benefit,
Environmental benefit and social benefit.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
Below in conjunction with attached drawing and preferred embodiment, to a kind of chlorination process integration production heavy oxygen proposed according to the present invention
Change the method specific features and its effect of zinc and fire concentrate impurity, detailed description is as follows.
A kind of method of the production of chlorination process integration heavy zinc oxide and fire concentrate impurity, first of technical process utilize
The zinc solid waste of fluorine-containing chlorine is as chlorinating agent, in carbon reducing environment, using Webster furnace, turns round the metallurgical equipments such as Rotary Kiln,
Reduction volatilization and chloridizing volatilization reaction and oxidation reaction occur for the metals such as zinc, lead, nickel, silver, indium, germanium, bismuth, prepare raw material oxidation
Zinc, above-mentioned metal enter product in the form of oxide, chloride and the object phase of fluoride or intermediate compound；Second technique
Process carries out high-temperature calcination by raw material of first of product, and a small amount of zinc chloride continues that a small amount of chlorination occurs in raw material zinc oxide
Reaction, chloride with fluoride collect at flue gas through dust collecting system at high temperature by dispensing volatile, obtains the leaded chlorination for waiting metals
Object and fluoride product.
Now for producing heavy zinc oxide containing the multi-metal oxygen zinc ore raw material of zinc, lead, silver, indium, germanium, bismuth metal：
The first step：Material mixture ratio is calculated, according to lead, silver, indium, germanium, the component content of bismuth and the zinc gray containing chlorine of selection zinc in raw material
The component content of slag, the total mole number according to lead, silver, indium, germanium, bismuth element is 2.05 times of ratio of chlorine and fluorine element total mole number
Example calculates the weight batching ratio of various materials, forms mixture；Carbon is added by the 45% of mixture gross weight, calculates and carbon weight is added
Amount；
Second step：It mixing, ball processed and dries, weighs various materials according to the proportion that the first step calculates, carry out ingredient, stirring and mixed
It closes, after mixing, pelletizing is made using ball equipment processed, pelletizing, which is dried to moisture content 5%, can put into smelting；
Third step：Chloridizing volatilization and reduction volatilization, chloride and fluoride in lead, silver, indium, germanium, bismuth and material are restored in carbon
Lower generation chlorination reaction generates lead, silver, indium, germanium, bismuth metal chloride and fluoride, zinc and is restored by carbon, generates zinc fume；
4th step：Oxidation reaction and chloride and fluoride are spread, and zinc fume generates zinc oxide by the dioxygen oxidation in air,
Chloride and fluoride are spread under the action of air temperature and current, and the composition chlorides such as zinc oxide and lead silver are mixed with fluoride
Flue gas；
5th step：It is cooling with gather dust, zinc oxide and lead silver chloride with fluoride flue gas through cooling, gather dust, obtain raw material and aoxidize
Zinc, the leaded silver-colored chloride of raw material zinc oxide and fluoride；
6th step：Calcining, using heated by gas calcining kiln, temperature reaches 1273K to 1473K, and the calcining of raw material zinc oxide is added, adjusts
Whole calcining kiln revolving speed, calcines raw material zinc oxide in calcining kiln 100 minutes to 120 minutes, obtains heavy zinc oxide and lead, silver
Chloride and fluoride flue gas, the content of heavy zinc oxide reach 99% or more；7th step：Flue gas is cooling and gathers dust, lead, silver-colored chlorine
Compound and fluoride flue gas are collected into lead, silver-colored chloride and fluoride flue dust through cooling and dust collecting system；
8th step：Broken and dress packet：The heavy zinc oxide calcined out obtains finished product heavy zinc oxide through broken and dress job contract sequence,
The zinc oxide content of finished product heavy zinc oxide is greater than 99%.
The first step checks fineness of materials, and granularity is below 20 mesh.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form, appoint
What is to the above embodiments according to the technical essence of the invention any simply to repair without departing from technical solution of the present invention content
Change, equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (2)
1. a kind of method of the production of chlorination process integration heavy zinc oxide and fire concentrate impurity, it is characterised in that：Including chlorination
Being used in combination for volatilization technique and chloridising roasting separating technology and two kinds of technique, is combined into a kind of new combined technique；
First of technical process is using the zinc solid waste of fluorine-containing chlorine as chlorinating agent, in carbon reducing environment, utilizes Webster furnace, revolution
Reduction volatilization and chloridizing volatilization reaction and oxidation occur for the metallurgical equipments such as Rotary Kiln, each metal of zinc, lead, nickel, silver, indium, germanium, bismuth
Reaction, prepares raw material zinc oxide, above-mentioned metal in the form of oxide, chloride are with the object phase of fluoride or intermediate compound into
Enter product；Second technical process carries out high-temperature calcination, a small amount of zinc chloride in raw material zinc oxide by raw material of first of product
Continue that a small amount of chlorination reaction occurs, chloride with fluoride collect at flue gas through dust collecting system at high temperature by dispensing volatile, obtains
To the chloride and fluoride product of leaded equal metals；
Specifically include following steps：
The first step：Material mixture ratio is calculated, according to lead, silver, indium, germanium, the component content of bismuth and the zinc gray containing chlorine of selection zinc in raw material
The component content of slag, the total mole number according to lead, silver, indium, germanium, bismuth element is 2.05 times of ratio of chlorine and fluorine element total mole number
Example calculates the weight batching ratio of various materials, forms mixture；Carbon is added by the 45% of mixture gross weight, calculates and carbon weight is added
Amount；
Second step：It mixing, ball processed and dries, weighs various materials according to the proportion that the first step calculates, carry out ingredient, stirring and mixed
It closes, after mixing, pelletizing is made using ball equipment processed, pelletizing, which is dried to moisture content 5%, can put into smelting；
Third step：Chloridizing volatilization and reduction volatilization, chloride and fluoride in lead, silver, indium, germanium, bismuth and material are restored in carbon
Lower generation chlorination reaction generates lead, silver, indium, germanium, bismuth metal chloride and fluoride, zinc and is restored by carbon, generates zinc fume；
4th step：Oxidation reaction and chloride and fluoride are spread, and zinc fume generates zinc oxide by the dioxygen oxidation in air,
Chloride and fluoride are spread under the action of air temperature and current, and the composition chlorides such as zinc oxide and lead silver are mixed with fluoride
Flue gas；
5th step：It is cooling with gather dust, zinc oxide and lead silver chloride with fluoride flue gas through cooling, gather dust, obtain raw material and aoxidize
Zinc, the leaded silver-colored chloride of raw material zinc oxide and fluoride；
6th step：Calcining, using heated by gas calcining kiln, temperature reaches 1273K to 1473K, and the calcining of raw material zinc oxide is added, adjusts
Whole calcining kiln revolving speed, calcines raw material zinc oxide in calcining kiln 100 minutes to 120 minutes, obtains heavy zinc oxide and lead, silver
Chloride and fluoride flue gas, the content of heavy zinc oxide reach 99% or more；7th step：Flue gas is cooling and gathers dust, lead, silver-colored chlorine
Compound and fluoride flue gas are collected into lead, silver-colored chloride and fluoride flue dust through cooling and dust collecting system；
8th step：Broken and dress packet：The heavy zinc oxide calcined out obtains finished product heavy zinc oxide through broken and dress job contract sequence,
The zinc oxide content of finished product heavy zinc oxide is greater than 99%.
2. the method for a kind of production of chlorination process integration heavy zinc oxide and fire concentrate impurity as described in claim 1,
It is characterized in that：The first step checks fineness of materials, and granularity is below 20 mesh.
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| CN106676272A (en) * | 2016-10-31 | 2017-05-17 | 云南驰宏锌锗股份有限公司 | Method for efficiently removing fluorine-chlorine impurities in zinc oxide smoke |
| CN106929667A (en) * | 2017-03-13 | 2017-07-07 | 江苏省冶金设计院有限公司 | A kind of method for processing zinc leaching residue |
| CN107151741A (en) * | 2017-06-06 | 2017-09-12 | 江苏省冶金设计院有限公司 | A kind of system and method for handling lead and zinc smelting dreg |
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