CN106521142B - A method of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine - Google Patents
A method of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine Download PDFInfo
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- CN106521142B CN106521142B CN201611060767.9A CN201611060767A CN106521142B CN 106521142 B CN106521142 B CN 106521142B CN 201611060767 A CN201611060767 A CN 201611060767A CN 106521142 B CN106521142 B CN 106521142B
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- Prior art keywords
- chlorine
- fluorine
- containing high
- high lead
- zinc material
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Classifications
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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
-
- 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
- C22B19/20—Obtaining zinc otherwise than by distilling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- 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
- C22B7/00—Working 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
- C22B7/02—Working-up flue dust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention relates to it is a kind of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine method, belong to the Zinc Hydrometallurgy Technology field of nonferrous smelting gold, concrete operations are：By containing high lead, fluorine, chlorine zinc material with roasting dirt and fine coal mix, roasting dirt with containing high lead, fluorine, chlorine zinc material weight ratio be 1:6, fine coal with containing high lead, fluorine, chlorine zinc material weight ratio be 10:1, control containing high lead, fluorine, chlorine zinc material lead content be less than 15%, calcination is then carried out in multiple hearth furnace.The method of the present invention can fully ensure that be smoothed out containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine technique, finally ensures that defluorinate, chlorine rate reach 90% or more；The roasting dirt being incorporated in the present invention, will not bring new impurity into, and avoid the situation generation that roasting dust quantity is too big, soaks bad clearly in causing, and alleviate the burden that calcining leaches line；The fine coal being incorporated in the present invention, energy is rapid, stablizes, uniformly by temperature promotion to defluorinate, chlorine effect preferred temperature.
Description
Technical field
The invention belongs to the Zinc Hydrometallurgy Technology fields of nonferrous smelting gold, specifically, being related to a kind of containing high lead, fluorine, chlorine
The multiple hearth furnace defluorinate of zinc material, chlorine method.
Background technology
Due to the use of zinc calcine and the secondary zinc oxide of rotary kiln evaporation, fluorine content is upper in Zinc hydrometallurgy process raw material
It rises, it is in the trend that rises overally to make fluorine content in solution of zinc sulfate, to bring series of problems to production process：Electrolytic pole board damages
Bad speed is aggravated, and service life reduces, and production cost increases；System equipment seriously corroded, product quality stability contorting difficulty increase
Greatly；Since fluorine is high toxic material, worker's health is affected；In addition the negative value of the standard oxidizing potential of chlorine considerably beyond
The deposition potential of oxygen and the formation current potential of lead peroxide, thus it is not easy to discharge in anode；When there is chlorion, metallic aluminium
The passivation layer situation of upper generation can be destroyed, and the oxidation film of cathode aluminium is destroyed, and aluminium sheet is caused to corrode, and accelerate disappearing for aluminium sheet
Consumption.When the content of Chlorine in Solution increases, the corrosion progress of chloride plate will increase, and the lead tolerance of cathode zinc is consequently increased.Separately
Outside, the raising of chlorine keeps the corrosion such as various equipment, including pump, pipeline in system more serious, therefore, in zinc hydrometallurgy industry
There must be sufficient guarantee, to ensure the removing of whole system fluorine, chlorion, to meet the sustainable development of zinc abstraction.
Currently, raw material used in enterprise：The secondary zinc oxide of zinc calcine and rotary kiln evaporation is leaded（Time of rotary kiln evaporation
Zinc oxide is leaded to reach 18%-24%）, fluorine, chlorine it is all higher；Cause solution of zinc sulfate fluorine, the chlorinity liter in entire wet method system
It is high（Fluorine content is up to 180mg/L in wet zinc-making system solution of zinc sulfate, and chloride ion content is up to 500mg/L）；During it
Mainly the removing carried out to fluorine, chlorine is combined with the abjection of copper ashes wet method using the abjection of multiple hearth furnace pyrogenic process；Wherein copper ashes is mainly needle
Removing to chlorion, removal efficiency is 70% or so, but cost is higher, is unfavorable for the development of company；In this regard, to reduce cost, it must
Palpus utility multiple hearth furnace smoothly completes the removing of two kinds of fluorine, chlorine elements.But the content of multiple hearth furnace defluorinate, chlorine and raw material each element
There is lead content in much relations, especially raw material, only material is leaded within 15% at present, and extrusion rate can just be guaranteed；
When raw material it is leaded more than 15% when, then can not ensure the removing of fluorine, chlorion（Because when material it is leaded more than 15% when, due to lead
Fusing point it is relatively low, when temperature reaches defluorinate, 600 DEG C of chlorine, excessive lead will melt caking, by multiple hearth furnace rake teeth and center
Axis adhesion is lived, and central shaft is stuck, equipment damage, and whole system can not be run）.Domestic all multiple hearth furnace defluorinates, chlorine work at present
Skill, raw material is leaded to be not above 15% substantially, and defluorinate, chlorine best results can reach 95%, 70% or so；But work as raw material
It is leaded more than 15% when, to ensure equipment normal operation, fluorine, chlorine extrusion rate be just difficult to be guaranteed, and defluorinate, chlorine effect only have
54.5%, 19%, so, high leaded, fluorine, the fluorine of chlorine zinc material, chlorine removing are all the great difficulty faced in industry all the time
Topic.
Therefore, it is necessary to propose it is a kind of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine method, can overcome
Due in raw material contain excessively high lead, fluorine, chlorine, conventional multiple hearth furnace can not effectively by fluorine, chlorine deviate from the problem of.
Invention content
In order to solve the problems, such as background technology, the present invention propose it is a kind of containing high lead, fluorine, chlorine zinc material it is more
The defluorinate of thorax stove, chlorine method, solve in zinc Zinc Hydrometallurgy Process, in high leaded, fluorine, chlorine zinc material the problem of fluorine, chlorine removing,
To ensure the stripping of electrolytic zinc plate and reduce the loss of yin, yang pole plate.
To achieve the above object, the present invention is achieved through the following technical solutions：
A method of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine, concrete operations are：To contain high lead, fluorine,
The zinc material of chlorine mix with roasting dirt and fine coal, control containing high lead, fluorine, chlorine zinc material lead content less than 15%, then in more thoraxes
Calcination is carried out in stove.
Further, the described roasting dirt and the weight ratio of zinc material containing high lead, fluorine, chlorine are 1:6, roast dirt granularity be-
200 mesh.
Further, the fine coal with containing high lead, fluorine, chlorine zinc material weight ratio be 10:1, the granularity of fine coal is small
In 1 ㎜.
Further, temperature is controlled at 650-700 DEG C in the multiple hearth furnace.
Further, zinc material wherein leaded 18%-24%, fluorine-containing 0.05-0.06% containing high lead, fluorine, chlorine contain chlorine
0.06-0.07%。
Beneficial effects of the present invention：The method of the present invention can fully ensure that containing high lead, fluorine, chlorine zinc material multiple hearth furnace it is de-
Fluorine, chlorine technique are smoothed out, and finally ensure that defluorinate, chlorine rate reach 90% or more；The roasting dirt being incorporated in the present invention will not be brought into new
Impurity, and avoid during roasting dust quantity causes greatly very much clear bad situation of soaking and occur, alleviate the burden that calcining leaches line；This
The fine coal being incorporated in invention, energy is rapid, stablizes, uniformly by temperature promotion to defluorinate, chlorine effect preferred temperature.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific implementation mode
A method of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine, concrete operations are：To contain high lead, fluorine,
The zinc material of chlorine（Leaded 18%-24%, fluorine-containing 0.05-0.06%, 0.06-0.07% containing chlorine）With roasting dirt and fine coal mix, roast dirt and
Containing high lead, fluorine, chlorine zinc material weight ratio be 1:6, the granularity for roasting dirt is -200 mesh, roasts the ingredient of dirt：Zn45%-52%、
Fe7.5%、Pb：2.4%-2.8%、SiO2:1.5%-1.8%, fine coal with containing high lead, fluorine, chlorine zinc material weight ratio be 10:1,
The granularity of fine coal is less than 1 ㎜, and fine coal contains C：52%-55%, moisture：8.5%-10.5%、S：0.92%-1.20%, control containing high lead,
Fluorine, chlorine the lead content of zinc material be less than 15%, then carry out calcination in multiple hearth furnace, in multiple hearth furnace temperature control 650 DEG C-
700℃。
Embodiment 1
By the zinc material containing high lead, fluorine, chlorine（Leaded 18.78%, fluorine-containing 0.050%, contain chlorine 0.06%）It is mixed with roasting dirt and fine coal
Close, roasting dirt with containing high lead, fluorine, chlorine zinc material weight ratio be 1:6, the granularity for roasting dirt is -200 mesh, roasts the ingredient of dirt：
Zn48%、Fe7.5%、Pb：2.58%、SiO2:1.8%, fine coal with containing high lead, fluorine, chlorine zinc material weight ratio be 10:1, powder
The granularity of coal is less than 1 ㎜, and fine coal contains C：52%, moisture：9.0%、S：1.0%, control containing high lead, fluorine, chlorine zinc material lead content
Less than 15%, then carry out calcination in multiple hearth furnace, in multiple hearth furnace temperature control at 680 DEG C, defluorinate, chlorine rate reach 91.46%,
90.03%。
Embodiment 2
By the zinc material containing high lead, fluorine, chlorine（Leaded 21.50%, fluorine-containing 0.050%, contain chlorine 0.066%）With roasting dirt and fine coal
Mixing, roasting dirt with containing high lead, fluorine, chlorine zinc material weight ratio be 1:6, the granularity for roasting dirt is -200 mesh, roasts the ingredient of dirt：
Zn52%、Fe7.5%、Pb：2.58%、SiO2:1.8%, fine coal with containing high lead, fluorine, chlorine zinc material weight ratio be 10:1, powder
The granularity of coal is less than 1 ㎜, and fine coal contains C：55%, moisture：8.5%、S：0.92%, it controls the lead of zinc material containing high lead, fluorine, chlorine and contains
Amount is less than 15%, then carries out calcination in multiple hearth furnace, in multiple hearth furnace temperature control at 700 DEG C, defluorinate, chlorine rate reach 92.23%,
91.15%。
Embodiment 3
By the zinc material containing high lead, fluorine, chlorine（Leaded 23.05%, fluorine-containing 0.055%, contain chlorine 0.068%）With roasting dirt and fine coal
Mixing, roasting dirt with containing high lead, fluorine, chlorine zinc material weight ratio be 1:6, the granularity for roasting dirt is -200 mesh, roasts the ingredient of dirt：Zn
50%、Fe 7.5%、Pb 2.8%、SiO21.6%, fine coal with containing high lead, fluorine, chlorine zinc material weight ratio be 10:1, fine coal
Granularity is less than 1 ㎜, and fine coal contains C：52%, moisture：8.5%、S：0.92%, control containing high lead, fluorine, chlorine zinc material lead content it is low
In 15%, then carry out calcination in multiple hearth furnace, in multiple hearth furnace temperature control at 650 DEG C, defluorinate, chlorine rate reach 90.65%,
90.27%。
The method of the present invention can fully ensure that be smoothed out containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine technique,
Finally ensure that defluorinate, chlorine rate reach 90% or more；The roasting dirt being incorporated in the present invention, will not bring new impurity into, and avoid roasting dirt
Amount is soaked bad clearly situation generation in causing greatly very much, alleviates the burden that calcining leaches line；The fine coal being incorporated in the present invention, energy
Rapidly, stablize, uniformly by temperature promotion to defluorinate, chlorine effect preferred temperature.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (3)
1. it is a kind of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine method, it is characterised in that：Concrete operations are：It will
Zinc material containing high lead, fluorine, chlorine mix with roasting dirt and fine coal, and the dirt that roasts is with the weight ratio of zinc material containing high lead, fluorine, chlorine
1：6, roast dirt granularity be -200 mesh, the fine coal with containing high lead, fluorine, chlorine zinc material weight ratio be 10:1, the carbon of fine coal
Content is 52-55%, and granularity is less than 1mm, controls the lead content of zinc material containing high lead, fluorine, chlorine and is less than 15%, then in multiple hearth furnace
Interior carry out calcination.
2. it is according to claim 1 it is a kind of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine method, feature
It is：Temperature control is at 650-700 DEG C in the multiple hearth furnace.
3. it is according to claim 1 it is a kind of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine method, feature
It is：It is described containing high lead, fluorine, chlorine zinc material in leaded 18%-24%, fluorine-containing 0.05-0.06%, 0.06-0.07% containing chlorine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611060767.9A CN106521142B (en) | 2016-11-28 | 2016-11-28 | A method of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611060767.9A CN106521142B (en) | 2016-11-28 | 2016-11-28 | A method of containing high lead, fluorine, the multiple hearth furnace defluorinate of zinc material of chlorine, chlorine |
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| Publication Number | Publication Date |
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| CN106521142A CN106521142A (en) | 2017-03-22 |
| CN106521142B true CN106521142B (en) | 2018-10-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4506017B2 (en) * | 2001-03-28 | 2010-07-21 | 住友金属鉱山株式会社 | Method for producing zinc oxide sinter or zinc oxide briquette |
| CN102021317B (en) * | 2010-12-16 | 2012-07-04 | 葫芦岛锌业股份有限公司 | Oxidizing roasting process by blending high fluorine chlorine zinc oxide complex material |
| CN102220480B (en) * | 2011-05-20 | 2013-02-27 | 昆明理工大学 | Method for removing fluorine and chlorine from zinc oxide smoke dust by microwave roasting |
| CN103834819B (en) * | 2013-12-05 | 2016-04-27 | 湖南水口山有色金属集团有限公司 | A kind of method containing the zinc material direct producing high-grade zinc oxide of high chlorine and fluorine |
| JP6387868B2 (en) * | 2015-03-09 | 2018-09-12 | 住友金属鉱山株式会社 | Method for producing zinc oxide ore |
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