CN102559958A - Method for improving grindability of metallurgical slag - Google Patents

Method for improving grindability of metallurgical slag Download PDF

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Publication number
CN102559958A
CN102559958A CN2012100377051A CN201210037705A CN102559958A CN 102559958 A CN102559958 A CN 102559958A CN 2012100377051 A CN2012100377051 A CN 2012100377051A CN 201210037705 A CN201210037705 A CN 201210037705A CN 102559958 A CN102559958 A CN 102559958A
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CN
China
Prior art keywords
metal
alkali
metallurgical slag
slag charge
slag
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CN2012100377051A
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Chinese (zh)
Inventor
冯定五
黄自力
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Wuhan University of Science and Engineering WUSE
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Wuhan University of Science and Engineering WUSE
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Priority to CN2012100377051A priority Critical patent/CN102559958A/en
Publication of CN102559958A publication Critical patent/CN102559958A/en
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2400/00Treatment of slags originating from iron or steel processes
    • C21B2400/02Physical or chemical treatment of slags
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies

Abstract

The invention relates to a method for improving the grindability of metallurgical slag. The method comprises the following steps of: uniformly adding 0.1 to 100 mass parts of chemical activators into 100 mass parts of molten metallurgical slag, and cooling, wherein the metallurgical slag is one of copper slag, zinc slag, lead slag, vanadium slag, titanium slag, ironmaking slag, steelmaking slag and rare-earth metal metallurgical slag; the chemical activators are more than one kind of oxides of alkali metal, oxides of alkaline-earth metal, hydroxides of alkali metal, hydroxides of alkaline-earth metal, carbonates of alkali metal, carbonates of alkaline-earth metal, bicarbonates of alkali metal, fluorides of alkali metal, fluorides of alkaline-earth metal and ammonium fluoride. The method has the characteristics of simple operation, high adaptability and high production efficiency and is widely applied to improving the grindability of the metallurgical slag.

Description

A kind of method that improves metallurgical slag charge grindability index
Technical field
The invention belongs to the technical field that improves metallurgical slag charge grindability index.Be specifically related to a kind of method that improves metallurgical slag charge grindability index.
Background technology
Produce a large amount of metallurgical slag charges in the metal pyrometallurgical smelting process, wherein contain a certain amount of valuable metal.Metallurgical slag charge is molten state discharges from smelting furnace, flows into the slag charge container, again through naturally cooling or shrend cooling.Cooled metallurgical slag charge through broken, ore grinding, utilizes conventional ore dressing and metallurgical method to reclaim the valuable metal in the slag charge again, and mainly siliceous, the al compsn of final dilution slag can be made the raw material of building materials.
Mainly to contain the crystal mineral facies different with natural crystal, and the thing in the metallurgical slag charge mainly is unformed noncrystalline state mutually, quality evenly, closely, hardness is big.Therefore, can not produce the working substance phase interface in the grinding process, cause grinding efficiency low, the ore grinding cost is high.
Non-ferrous metal in the metallurgical slag charge and precious metal exist mostly sulfide mutually in, iron mainly exists with the ferric metasilicate form, gangue be silicate, silico-aluminate mostly, reach calcium, magnesium oxide.Metallurgical slag charge complicated component, character is unstable, the embedding of the mutually common ultra-fine grain of valuable metal thing be distributed in the gangue thing mutually in.Usually has only the ultra-fine ore grinding valuable metal thing phase of could partly dissociating.Therefore, improving the ore grinding selectivity is the prerequisite of efficient recovery valuable metal.
Summary of the invention
The present invention is intended to overcome the prior art defective, and purpose provides a kind of method of simple to operate, the metallurgical slag charge grindability index of flexibility is strong and production efficiency is high raising.
It is following that the present invention solves the problems of the technologies described above the technical scheme that is adopted: it is characterized in that cooling off then in the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 0.1~100 part of quality.
Said metallurgical slag charge is a kind of in the metallurgical slag charge of copper ashes, cadmia, lead skim, vanadium slag, titanium slag, ironmaking slag, steel-making slag and rare earth metal.
Said chemical activating agent is the fluorochemical of the carbonate of the oxyhydroxide of the oxide compound of alkali-metal oxide compound, earth alkali metal, alkali-metal oxyhydroxide, earth alkali metal, alkali-metal carbonate, earth alkali metal, alkali-metal acid carbonate, alkali-metal fluorochemical, earth alkali metal and in the Neutral ammonium fluoride more than one.
The present invention is proposing on the basis of the further investigation of aspects such as the mechanism that a series of chemical reaction takes place under the heat activation, thermodynamics and kinetics characteristic and test siliceous, aluminium and ferric metasilicate class component thing and alkali and fluorochemical class chemical activating agent.Especially adopt alkali and fluorochemical class chemical activating agent under the intensification condition, can optionally destroy siliceous, aluminium thing phase, improved the grindability index of metallurgical slag charge greatly, effectively strengthen valuable metal phase ore grinding selectivity simultaneously.
Therefore, the present invention compared with prior art has following positively effect:
At first, alkali and fluorochemical class chemical activating agent can optionally destroy silicon, the aluminium phase structure in the fusion metallurgy slag charge, significantly reduce the hardness of metallurgical slag charge, have improved the grindability index of metallurgical slag charge.
Secondly; Through the mode of adding chemical activation the valuable metal thing is effectively separated out mutually in process of cooling from silicon, aluminium thing; Improve the selective milling of metallurgical slag charge, solved the technical barrier that existing recovery technology can't reclaim all valuable metals in the metallurgical slag charge together.
Therefore, the characteristics that the present invention has is simple to operate, flexibility is strong and production efficiency is high are adaptable across the grindability index that improves metallurgical slag charge.
 
Embodiment
Describe the present invention below in conjunction with embodiment, but the present invention is not limited to given example.
Embodiment 1
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of this method elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 0.1~1 part of quality, cool off again.
In the present embodiment: metallurgical slag charge is the ironmaking slag; Chemical activating agent is the carbonate of earth alkali metal.
The metallurgical slag material list position power consume of present embodiment reduces by 10 ~ 15%, and the effective mutually liberation degree of valuable metal is 55 ~ 60%.
Embodiment 2
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is the fluorochemical of earth alkali metal.All the other are with embodiment 1.
The metallurgical slag material list position power consume of present embodiment reduces by 8 ~ 12%, and the effective mutually liberation degree of valuable metal is 50 ~ 55%.
Embodiment 3
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 1~10 part of quality, cool off then.
In the present embodiment: metallurgical slag charge is a copper ashes; Chemical activating agent is alkali-metal acid carbonate.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 4
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal fluorochemical.All the other are with embodiment 3.
The metallurgical slag material list position power consume of present embodiment reduces by 30 ~ 35%, and the effective mutually liberation degree of valuable metal is 65 ~ 70%.
Embodiment 5
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is the oxide compound of earth alkali metal.All the other are with embodiment 3.
The metallurgical slag material list position power consume of present embodiment reduces by 30 ~ 35%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 6
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is the oxyhydroxide of earth alkali metal.All the other are with embodiment 3.
The metallurgical slag material list position power consume of present embodiment reduces by 30 ~ 35%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 7
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal carbonate.All the other are with embodiment 3.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 8
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is the fluorochemical and Neutral ammonium fluoride of carbonate, earth alkali metal of oxyhydroxide, the earth alkali metal of oxide compound, the earth alkali metal of alkali-metal oxyhydroxide, alkali-metal oxide compound, alkali-metal fluorochemical, alkali-metal carbonate, alkali-metal acid carbonate, earth alkali metal.All the other are with embodiment 3.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 9
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 1~10 part of quality, cool off then.
In the present embodiment: metallurgical slag charge is a cadmia; Chemical activating agent is the oxide compound of alkali-metal oxyhydroxide, alkali-metal oxide compound, alkali-metal fluorochemical, alkali-metal carbonate, alkali-metal acid carbonate, earth alkali metal, the oxyhydroxide of earth alkali metal, the carbonate of earth alkali metal and the fluorochemical of earth alkali metal.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 10
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 1~10 part of quality, cool off then.
In the present embodiment: metallurgical slag charge is a vanadium slag; Chemical activating agent is the oxide compound of alkali-metal oxyhydroxide, alkali-metal oxide compound, alkali-metal fluorochemical, alkali-metal carbonate, alkali-metal acid carbonate, earth alkali metal, the oxyhydroxide of earth alkali metal and the carbonate of earth alkali metal.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 11
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 1~10 part of quality, cool off then.
In the present embodiment: metallurgical slag charge is a titanium slag; Chemical activating agent is the oxide compound of alkali-metal oxyhydroxide, alkali-metal oxide compound, alkali-metal fluorochemical, alkali-metal acid carbonate, earth alkali metal, the oxyhydroxide of earth alkali metal and the carbonate of earth alkali metal.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 12
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is the carbonate of oxyhydroxide and earth alkali metal of alkali-metal fluorochemical, the basic metal oxide compound that obtains carbonate, alkali-metal acid carbonate, earth alkali metal, earth alkali metal.All the other are with embodiment 11.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 13
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 1~10 part of quality, cool off then.
In the present embodiment: metallurgical slag charge is the steel-making slag; Chemical activating agent is the oxide compound of alkali-metal fluorochemical, alkali-metal carbonate, alkali-metal acid carbonate, earth alkali metal and the oxyhydroxide of earth alkali metal.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 14
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is the oxide compound of alkali-metal oxyhydroxide, alkali-metal oxide compound, alkali-metal fluorochemical, alkali-metal carbonate, alkali-metal acid carbonate and earth alkali metal.All the other are with embodiment 13.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 15
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal oxyhydroxide, alkali-metal oxide compound, alkali-metal fluorochemical, alkali-metal carbonate and alkali-metal acid carbonate.All the other are with embodiment 13.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 16
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 1~10 part of quality, cool off then.
In the present embodiment: metallurgical slag charge is a lead skim; Chemical activating agent is alkali-metal oxyhydroxide, alkali-metal oxide compound, alkali-metal fluorochemical and alkali-metal carbonate.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 17
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal oxyhydroxide, alkali-metal oxide compound and alkali-metal fluorochemical.All the other are with embodiment 16.
The metallurgical slag material list position power consume of present embodiment reduces by 35 ~ 40%, and the effective mutually liberation degree of valuable metal is 75 ~ 80%.
Embodiment 18
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 10~20 parts of quality, cool off then.
In the present embodiment: metallurgical slag charge is a copper ashes; Chemical activating agent is alkali-metal oxyhydroxide.
The metallurgical slag material list position power consume of present embodiment reduces by 45 ~ 50%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 19
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal oxide compound.All the other are with embodiment 18.
The metallurgical slag material list position power consume of present embodiment reduces by 45 ~ 50%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 20
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal carbonate.All the other are with embodiment 18.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 21
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is Neutral ammonium fluoride.All the other are with embodiment 18.
The metallurgical slag material list position power consume of present embodiment reduces by 40 ~ 45%, and the effective mutually liberation degree of valuable metal is 80 ~ 85%.
Embodiment 22
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal oxyhydroxide and alkali-metal acid carbonate.All the other are with embodiment 18.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 23
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal carbonate and alkali-metal acid carbonate.All the other are with embodiment 18.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 24
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal oxyhydroxide and alkali-metal fluorochemical.All the other are with embodiment 18.
The metallurgical slag material list position power consume of present embodiment reduces by 45 ~ 50%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 25
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 10~20 parts of quality, cool off then.
In the present embodiment: metallurgical slag charge is a cadmia; Chemical activating agent is alkali-metal fluorochemical and alkali-metal carbonate.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 26
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal oxyhydroxide and alkali-metal carbonate.All the other are with embodiment 25.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 27
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal oxyhydroxide, alkali-metal carbonate and alkali-metal acid carbonate.All the other are with embodiment 25.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 28
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 10~20 parts of quality, cool off then.
In the present embodiment: metallurgical slag charge is a titanium slag; Chemical activating agent is alkali-metal oxyhydroxide, alkali-metal carbonate and alkali-metal fluorochemical.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 29
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is the oxide compound of alkali-metal oxyhydroxide, alkali-metal carbonate and earth alkali metal.All the other are with embodiment 28.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 30
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal oxyhydroxide, alkali-metal carbonate and Neutral ammonium fluoride.All the other are with embodiment 28.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 31
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal carbonate, Neutral ammonium fluoride and alkali-metal fluorochemical.All the other are with embodiment 28.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 32
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal carbonate, Neutral ammonium fluoride, alkali-metal fluorochemical and alkali-metal oxyhydroxide.All the other are with embodiment 28.
The metallurgical slag material list position power consume of present embodiment reduces by 55 ~ 60%, and the effective mutually liberation degree of valuable metal is 85 ~ 90%.
Embodiment 33
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 20~50 parts of quality, cool off then.
In the present embodiment: metallurgical slag charge is a titanium slag; Chemical activating agent is alkali-metal oxide compound and alkali-metal oxyhydroxide.
The metallurgical slag material list position power consume of present embodiment reduces by 60 ~ 65%, and the effective mutually liberation degree of valuable metal is 90 ~ 95%.
Embodiment 34
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is the oxide compound of alkali-metal oxyhydroxide and earth alkali metal.All the other are with embodiment 33.
The metallurgical slag material list position power consume of present embodiment reduces by 65 ~ 70%, and the effective mutually liberation degree of valuable metal is 90 ~ 95%.
Embodiment 35
A kind of method that improves metallurgical slag charge grindability index.In the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 50~100 parts of quality, cool off then.
In the present embodiment: metallurgical slag charge is the metallurgical slag charge of rare earth metal; Chemical activating agent is alkali-metal carbonate.
The metallurgical slag material list position power consume of present embodiment reduces by 85 ~ 90%, and the effective mutually liberation degree of valuable metal is 95 ~ 100%.
Embodiment 36
A kind of method that improves metallurgical slag charge grindability index.Except that chemical activating agent is alkali-metal acid carbonate.All the other are with embodiment 35.
The metallurgical slag material list position power consume of present embodiment reduces by 85 ~ 90%, and the effective mutually liberation degree of valuable metal is 95 ~ 100%.
This embodiment compared with prior art has following positively effect:
At first, alkali and fluorochemical class chemical activating agent can optionally destroy silicon, the aluminium phase structure in the fusion metallurgy slag charge, have reduced the hardness of metallurgical slag charge significantly, have improved the grindability index of metallurgical slag charge.
Secondly; Through the mode of adding chemical activation the valuable metal thing is effectively separated out mutually in process of cooling from silicon, aluminium thing; Improve the selective milling of metallurgical slag charge, solved the technical barrier that existing recovery technology can't reclaim all valuable metals in the metallurgical slag charge together.
Therefore, the characteristics that the present invention has is simple to operate, flexibility is strong and production efficiency is high are adaptable across the grindability index that improves metallurgical slag charge.

Claims (3)

1. a method that improves metallurgical slag charge grindability index is characterized in that cooling off then in the metallurgical slag charge of elder generation with the molten state of 100 parts of quality of the even adding of the chemical activating agent of 0.1~100 part of quality.
2. the method for the metallurgical slag charge grindability index of raising according to claim 1 is characterized in that described metallurgical slag charge is a kind of in the metallurgical slag charge of copper ashes, cadmia, lead skim, vanadium slag, titanium slag, ironmaking slag, steel-making slag and rare earth metal.
3. the method for the metallurgical slag charge grindability index of raising according to claim 1 is characterized in that described chemical activating agent is the fluorochemical of the carbonate of the oxyhydroxide of the oxide compound of alkali-metal oxide compound, earth alkali metal, alkali-metal oxyhydroxide, earth alkali metal, alkali-metal carbonate, earth alkali metal, alkali-metal acid carbonate, alkali-metal fluorochemical, earth alkali metal and in the Neutral ammonium fluoride more than one.
CN2012100377051A 2012-02-20 2012-02-20 Method for improving grindability of metallurgical slag Pending CN102559958A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101172649A (en) * 2006-10-30 2008-05-07 中国科学院过程工程研究所 Method for clean production of titanium dioxide by using potassium hydroxide
CN101886179A (en) * 2010-07-12 2010-11-17 昆明理工大学 Method for separating ferrum, copper and silicon components from copper smelting residues

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101172649A (en) * 2006-10-30 2008-05-07 中国科学院过程工程研究所 Method for clean production of titanium dioxide by using potassium hydroxide
CN101886179A (en) * 2010-07-12 2010-11-17 昆明理工大学 Method for separating ferrum, copper and silicon components from copper smelting residues

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Application publication date: 20120711