CN110358921A - A kind of disposing technique of Zinc-Bearing Wastes slag solid waste - Google Patents

A kind of disposing technique of Zinc-Bearing Wastes slag solid waste Download PDF

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Publication number
CN110358921A
CN110358921A CN201910754087.4A CN201910754087A CN110358921A CN 110358921 A CN110358921 A CN 110358921A CN 201910754087 A CN201910754087 A CN 201910754087A CN 110358921 A CN110358921 A CN 110358921A
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China
Prior art keywords
zinc
disposing technique
bearing wastes
technique
slag
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Application number
CN201910754087.4A
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Chinese (zh)
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CN110358921B (en
Inventor
罗磊
罗宝龙
雍海泉
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Chongqing Ccid Thermal Technology Environment-Friendly Engineering Technology Co Ltd
Chongqing CISDI Thermal and Environmental Engineering Co Ltd
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Chongqing Ccid Thermal Technology Environment-Friendly Engineering Technology Co Ltd
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Priority to CN201910754087.4A priority Critical patent/CN110358921B/en
Publication of CN110358921A publication Critical patent/CN110358921A/en
Priority to PCT/CN2020/106824 priority patent/WO2021027634A1/en
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Classifications

    • 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
    • C22B19/04—Obtaining zinc 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
    • C22B19/20—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
    • 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
    • C22B7/001—Dry 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
    • 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
    • C22B7/006—Wet 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
    • 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
    • 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
    • C22B7/04—Working-up slag
    • 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 invention belongs to metallurgical fixed-end forces technical fields, it is related to a kind of disposing technique of Zinc-Bearing Wastes slag solid waste, the Zinc-Bearing Wastes slag generated in smelter production process is subjected to classification planning first, zinc content >=5% enters wet process disposing technique, zinc content < 5% enters pyrogenic process disposing technique, the residue that wet process disposing technique generates is again introduced into pyrogenic process disposing technique, the Second-rate zinc oxide powder (zinc oxide content≤60%) that pyrogenic process disposing technique generates is again introduced into wet process disposing technique, it is planned by the way that original Zinc-Bearing Wastes slag is classified, wet process and pyrogenic process joint disposition is respectively adopted according to the height difference of zinc content, overall planning；Simultaneously wet process and pyrogenic process can not using or low-value product carry out intersecting the profound disposition of joint again, complement each other, more reasonably dispose smelter Zinc-Bearing Wastes slag waste, while realizing bigger economic benefit.

Description

A kind of disposing technique of Zinc-Bearing Wastes slag solid waste
Technical field
The invention belongs to metallurgical fixed-end forces technical fields, are related to a kind of disposition work of Zinc-Bearing Wastes slag solid waste The disposing technique of skill more particularly to a kind of pyrogenic process and wet method combined disposition Zinc-Bearing Wastes slag solid waste.
Background technique
Each process can generate the solids such as dirt, mud, the slag of the different ingredients containing zinc to steel/non-ferrous metallurgical enterprise in actual production Waste.In traditional disposing technique, wet process generally is suitable for the Zinc-Bearing Wastes slag waste of processing zinc content >=5%, and pyrogenic process is usual It is suitble to the Zinc-Bearing Wastes slag waste of disposition zinc content < 5%, wet processing includes acid system, alkaline process, ammonia process etc., thermal process packet Include rotary hearth furnace, rotary kiln etc..
In existing disposing technique, wet process only handles the high zinc fume body refuse of enterprise's generation, and product includes high-purity zinc oxide Powder (zinc oxide content >=95%) or zinc ingot metal (Zn content >=99%), directly outer sell can generate good economic benefit, but by Lower in wet dezincification rate, usual < 70% contains zinc about 2% in residual residue, and residue returns to Commercial cultivation and still results in zinc The circulation collection of element influences to produce；The high zinc and low zinc fume body refuse waste that thermal process usually generates enterprise pass through mixed Low zinc mixing dirt body refuse is obtained after even ingredient, product includes Second-rate zinc oxide powder and metallized pellet, since pyrogenic process dezinc degree is higher, Usual > 90%, < containing zinc 0.5% in residual metallic pellet, can directly return to production cycle use, but due to pyrogenic process disposition In technique, potassium, sodium, chlorine, lead and other elements can escape jointly with Zn-ef ficiency, cause pyrogenic process product secondary zinc oxide grade powder lower, Usual zinc oxide content≤60%, cannot achieve good economic benefit.
Summary of the invention
In view of this, the present invention is to solve traditional Zinc-Bearing Wastes slag disposition of solid waste mode, to Zinc-Bearing Wastes The problem of slag offal treatment range is single, deficiency in economic performance provides a kind of disposing technique of Zinc-Bearing Wastes slag solid waste.
In order to achieve the above objectives, the present invention provides a kind of disposing technique of Zinc-Bearing Wastes slag solid waste, including following Step:
A, by Zinc-Bearing Wastes slag classify plan, by Zinc-Bearing Wastes slag be divided into zinc content >=5% a kind of Zinc-Bearing Wastes slag and The two class Zinc-Bearing Wastes slags of zinc content < 5%, a kind of Zinc-Bearing Wastes slag enter wet process disposing technique, and two class Zinc-Bearing Wastes slags enter Pyrogenic process disposing technique；
B, residue of the step A after wet process disposing technique enters with the two class Zinc-Bearing Wastes slags filtered out together as raw material Pyrogenic process disposing technique carries out primary extraction zinc, the Second-rate zinc oxide powder (zinc oxide content≤60%) and sieve that pyrogenic process disposing technique generates A kind of Zinc-Bearing Wastes slag selected enters wet process disposing technique together as raw material and carries out second extraction zinc；
C, high purity zinc oxide powder or zinc ingot metal is made as zinc abstraction raw material in the high zinc fume body refuse after step B wet process disposing technique Directly outer to sell, metallized pellet is made in the low zinc mixing dirt body refuse after pyrogenic process disposing technique, and directly returning to blast fumance circulation makes With.
Further, zinc oxide content >=95% in high purity zinc oxide powder after step C wet process disposing technique, Zn content in zinc ingot metal >=99%.
Further, pyrogenic process dezinc degree > 90% after step C pyrogenic process disposing technique, < containing zinc in residual metallic pellet 0.5%.
The beneficial effects of the present invention are:
1, the disposing technique of Zinc-Bearing Wastes slag solid waste disclosed in this invention is totally different from traditional containing zinc fume Body refuse disposition of solid waste mode, the disposing technique of the pyrogenic process and wet method combined disposition Zinc-Bearing Wastes slag solid waste, leads to It crosses to classify original Zinc-Bearing Wastes slag and plan, wet process and pyrogenic process joint disposition, system are respectively adopted according to the height difference of zinc content Raise planning；Simultaneously wet process and pyrogenic process can not using or low-value product carry out intersecting the profound disposition of joint again, complement each other, Smelter Zinc-Bearing Wastes slag waste is more reasonably disposed, while realizing bigger economic benefit.
2, the disposing technique of Zinc-Bearing Wastes slag solid waste disclosed in this invention, passes through pyrogenic process and wet method combined disposition Zinc-Bearing Wastes slag solid waste, on the one hand, zinc recovery rate can be further increased on the basis of independent wet process disposing technique About 20% or more, while the residue that wet process disposing technique can not be handled is disposed by thermal process, 100% recycling ferro element； On the other hand, 1 times of Second-rate zinc oxide powder economic value or more can be further increased on the basis of independent pyrogenic process disposing technique.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing excellent The detailed description of choosing, in which:
Fig. 1 is the process flow chart of the disposing technique of Zinc-Bearing Wastes slag solid waste of the present invention.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from Various modifications or alterations are carried out under spirit of the invention.
A kind of disposing technique of Zinc-Bearing Wastes slag solid waste as shown in Figure 1, comprising the following steps:
A, by Zinc-Bearing Wastes slag classify plan, by Zinc-Bearing Wastes slag be divided into zinc content >=5% a kind of Zinc-Bearing Wastes slag and The two class Zinc-Bearing Wastes slags of zinc content < 5%, a kind of Zinc-Bearing Wastes slag enter wet process disposing technique, and two class Zinc-Bearing Wastes slags enter Pyrogenic process disposing technique；
B, residue of the step A after wet process disposing technique enters with the two class Zinc-Bearing Wastes slags filtered out together as raw material Pyrogenic process disposing technique carries out primary extraction zinc, the Second-rate zinc oxide powder (zinc oxide content≤60%) and sieve that pyrogenic process disposing technique generates A kind of Zinc-Bearing Wastes slag selected enters wet process disposing technique together as raw material and carries out second extraction zinc；
C, high purity zinc oxide powder or zinc ingot metal is made as zinc abstraction raw material in the high zinc fume body refuse after step B wet process disposing technique It is sold outside directly, zinc oxide content >=95% in high purity zinc oxide powder, Zn content >=99% in zinc ingot metal；It is low after pyrogenic process disposing technique Metallized pellet is made in zinc mixing dirt body refuse, and directly return blast fumance is recycled, pyrogenic process dezinc degree > 90%, residual metallic < containing zinc 0.5% in pellet.
The semi-finished product that the residual product that can not directly utilize and thermal process that the present invention generates wet processing generate Zinc oxide product crossbinding inside process closes profound disposition, complements each other, and more reasonably disposes smelter and contains zinc fume Body refuse waste, while realizing bigger economic benefit.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention Scope of the claims in.

Claims (3)

1. a kind of disposing technique of Zinc-Bearing Wastes slag solid waste, which comprises the following steps:
A, Zinc-Bearing Wastes slag is classified and is planned, Zinc-Bearing Wastes slag is divided into a kind of Zinc-Bearing Wastes slag of zinc content >=5% and containing zinc The two class Zinc-Bearing Wastes slags of < 5% are measured, a kind of Zinc-Bearing Wastes slag enters wet process disposing technique, and two class Zinc-Bearing Wastes slags enter pyrogenic process Disposing technique；
B, residue of the step A after wet process disposing technique and the two class Zinc-Bearing Wastes slags filtered out enter pyrogenic process together as raw material Disposing technique carry out it is primary extract zinc, the Second-rate zinc oxide powder (zinc oxide content≤60%) that pyrogenic process disposing technique generates with filter out A kind of Zinc-Bearing Wastes slag together as raw material enter wet process disposing technique carry out second extraction zinc；
C, it is direct as zinc abstraction raw material that high purity zinc oxide powder or zinc ingot metal is made in the high zinc fume body refuse after step B wet process disposing technique It sells outside, metallized pellet is made in the low zinc mixing dirt body refuse after pyrogenic process disposing technique, and directly return blast fumance is recycled.
2. the disposing technique of Zinc-Bearing Wastes slag solid waste as described in claim 1, which is characterized in that the disposition of step C wet process Zinc oxide content >=95% in high purity zinc oxide powder after technique, Zn content >=99% in zinc ingot metal.
3. the disposing technique of Zinc-Bearing Wastes slag solid waste as claimed in claim 2, which is characterized in that the disposition of step C pyrogenic process Pyrogenic process dezinc degree > 90% after technique, < containing zinc 0.5% in residual metallic pellet.
CN201910754087.4A 2019-08-15 2019-08-15 Treatment process of zinc-containing dust and sludge solid waste Active CN110358921B (en)

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PCT/CN2020/106824 WO2021027634A1 (en) 2019-08-15 2020-08-04 Treatment process of zinc-containing dust sludge solid waste

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CN110724831A (en) * 2019-10-31 2020-01-24 重庆赛迪热工环保工程技术有限公司 Carbon circulating system and method for producing zinc oxide by industrially recycling zinc
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CN114309020A (en) * 2022-01-04 2022-04-12 重庆赛迪热工环保工程技术有限公司 Pyrogenic time-sharing treatment method for metallurgical zinc-containing dust sludge

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WO2021027634A1 (en) * 2019-08-15 2021-02-18 重庆赛迪热工环保工程技术有限公司 Treatment process of zinc-containing dust sludge solid waste
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