CN107236861A - A kind of method that utilization industrial residue produces stainless steel smelting sintering deposit - Google Patents
A kind of method that utilization industrial residue produces stainless steel smelting sintering deposit Download PDFInfo
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- CN107236861A CN107236861A CN201710319093.8A CN201710319093A CN107236861A CN 107236861 A CN107236861 A CN 107236861A CN 201710319093 A CN201710319093 A CN 201710319093A CN 107236861 A CN107236861 A CN 107236861A
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- sintering
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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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
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- 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
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Abstract
The invention discloses a kind of method that utilization industrial residue produces stainless steel smelting sintering deposit, comprise the following steps：（1）Sampling analysis：Industrial residue is carried out separately sampled, determined after element species contained therein and content, it is stand-by as raw material；（2）Dispensing：Chemical ingredients are carried out to raw material according to the component requirements of sintering deposit；（3）Mix：The various raw materials obtained after dispensing are well mixed with flux, sintering feed is obtained, sintering fuel is added in sintering feed and is well mixed, compound is obtained；（4）Ball processed：Compound is subjected to ball processed, material bead is obtained；（5）Sintering：Sintering deposit is produced after being sintered using vertical sintering furnace to material bead.Step of the present invention is simple, it is workable, cost is low, by the optimal screening to dispensing and to sintering step and the Optimal improvements of technique, harmlessness disposing and valuable metal the resource comprehensive utilization recycling to nickeliferous, chromium hazardous waste are realized simultaneously, with very high environmental benefit and economic benefit.
Description
Technical field
The present invention relates to a kind of sintering deposit, stainless steel smelting sintering deposit is produced using industrial residue more particularly, to one kind
Method.
Background technology
The sintering deposit of the metals such as nickeliferous, chromium is the raw material of stainless steel smelting, and sintering deposit is sintered using a kind of environment-friendly stove
Production, sintering deposit raw material is electroplating sludge, pickling mud, Stainless Steel Plant's mill tap, dead catalyst containing nickel, chromium-bearing sludge, steel
Factory or dedusting ash of stainless steel etc. are nickeliferous, chromium hazardous waste.
The low electroplating sludge of valuable metal content, pickling mud, dead catalyst containing nickel, chromium-bearing sludge, steel plant or stainless steel
Dedusting ash etc. is nickeliferous, chromium hazardous waste, and recovery valuable metal is carried out using wet processing, and technological process is long, and cost recovery is high,
Less economical, the waste residue produced in disposal process does not reach innoxious requirement.If to above-mentioned hazardous waste is carried out reasonable dispensing,
Ball processed（Agglomeration）, sintering production stainless steel smelting sintering deposit, with very high economic benefit and environmental benefit.How to obtain
Rational raw material proportioning and the suitable sintering process of determination, are the keys for obtaining high-quality sintering deposit.
The content of the invention
The invention aims to provide a kind of method that utilization industrial residue produces stainless steel smelting sintering deposit, work
Skill step is simple, and workable, cost is low, while realizing to the harmlessness disposing of nickeliferous, chromium hazardous waste and valuable
Metals resources synthetical recovery is recycled, with very high environmental benefit and economic benefit.
To achieve these goals, the present invention uses following technical scheme：
A kind of method that utilization industrial residue produces stainless steel smelting sintering deposit, comprises the following steps：
（1）Sampling analysis：Industrial residue is carried out separately sampled, determine after element species contained therein and content, be used as raw material
It is stand-by.Industrial residue is the hazardous wastes such as plating mud, the pickling sludge of metal such as nickeliferous, chromium.
（2）Dispensing：Chemical ingredients are carried out to raw material according to the requirement of the chemical composition of sintering deposit, raw material is obtained.
（3）Mix：The various raw materials obtained after dispensing are well mixed with flux, compound is obtained, added in compound
Sintering fuel is well mixed, and obtains sintering feed.By mixing to ensure that the composition of sintering feed is uniform, moisture is suitable, it is easy to pelletizing, from
And the good compound of granularmetric composition is obtained, to ensure the quality of sintering deposit and improve yield.
（4）Ball processed：Compound is subjected to ball processed, material bead is obtained.
（5）Sintering：Sintering deposit is produced after being sintered using vertical sintering furnace to material bead.
Preferably, step（2）In, dispensing is carried out according to the chemical composition of following mass percent proportioning：3 ~ 6%NiO,
10~15%Cr2O3, 30 ~ 35%Fe2O3, 15 ~ 20%CaO, 10 ~ 15%SiO2, 20 ~ 25%H2O.Obtain chemical composition and physical property is steady
Fixed sintering deposit, its key is dispensing, and the present invention uses quality dosing method, and accuracy is good, is easy to implement automation, by
The optimal screening of material is to ensure the sintering quality and stability of sintering deposit.
Preferably, the flux be lime, the sintering fuel be coal dust or waste active carbon, sintering feed sintering fuel
Addition is the 8 ~ 12% of sintering feed quality.
Preferably, particle diameter is that the granular mass of the mesh of 160 mesh ~ 200 accounts for 60 ~ 70% in the sintering fuel.In sintering fuel
Particle diameter is that the granular mass of the mesh of 160 mesh ~ 200 accounts for 60 ~ 70% to ensure to sinter gas permeability, is conducive to improving sintering velocity and sintering
Quality.
Preferably, step（4）In, the material bead particle diameter is 3 ~ 5mm.
Preferably, what is sintered concretely comprises the following steps：Material bead enters after vertical sintering furnace epimere is preheated to 50 ~ 150 DEG C
The stage casing for entering vertical sintering furnace is warming up to 800 DEG C, sinters and is warming up to 900 DEG C of continuation 7 ~ 9min of sintering after 15 ~ 18min again, finally
50 DEG C of 30 ~ 40min of holding are cooled into vertical sintering furnace hypomere, sintering deposit is produced.Sintering process principle is solid phase reaction, liquid
Mutually formed and crystallization process.Main component in raw material of the present invention is high-melting-point, when vertical sintering furnace epimere is preheated（50~150
℃）It can not melt down, when material, which is moved down, is heated to certain temperature, be reacted between each component mostly（Sintering temperature
800 DEG C, sintering time are risen to from 50 DEG C：15~18min）, as material is moved down, temperature gradually rises,（Sintering temperature from
800 DEG C rise to 900 DEG C, sintering time：7~9min）Complicated chemical solid phase reaction is carried out, the relatively low noval chemical compound of generation fusing point makes
They generate liquid phase at a lower temperature, and surrounding material is infiltrated and melted, and adjacent drops produce polymerization, cause contraction and row
Journey stomata, after the bed of material is moved gradually downward, melted material temperature drop（Sintering temperature is down to 50 DEG C, sintering time from 900 DEG C：
30~40min）, consolidated in cooling procedure and produce crystallization, as the porous sintered ore deposit with some strength.Sintering process can
To remove the free moisture in metallic waste, the crystallization water and partial impurities etc..By the control to sintering step and technique,
To ensure the quality of sintering deposit.
Therefore, the present invention has the advantages that：One kind is provided using industrial residue production stainless steel smelting sintering
The method of ore deposit, step is simple, and workable, cost is low, by the optimal screening to dispensing and to sintering step and technique
Optimal improvements, while realizing to the harmlessness disposing and valuable metal resource comprehensive utilization of nickeliferous, chromium hazardous waste again
Utilize, with very high environmental benefit and economic benefit.
Embodiment
Below by embodiment, the present invention will be further described.
Embodiment 1
（1）Sampling analysis：Industrial residue is carried out separately sampled, determine after element species contained therein and content, be used as raw material
It is stand-by；
（2）Dispensing：Dispensing is carried out according to the chemical composition of following mass percent proportioning：3%NiO, 10%Cr2O3, 35%Fe2O3,
20%CaO, 12%SiO2, 20%H2O, obtains raw material；
（3）Mix：The various raw materials obtained after dispensing are well mixed with flux, compound is obtained, sintering is added in compound
Fuel is well mixed, and obtains sintering feed, and flux is lime, and sintering fuel is coal dust, and sintering fuel addition is sintering feed quality
8%, particle diameter is that the granular mass of the mesh of 160 mesh ~ 200 accounts for 60% in sintering fuel；
（4）Ball processed：Sintering feed is subjected to ball processed, the material bead that particle diameter is 3mm is obtained；
（5）Sintering：Produce sintering deposit after being sintered using vertical sintering furnace to material bead, sintering is concretely comprised the following steps：Thing
Expect that after vertical sintering furnace epimere is preheated to 50 DEG C, 800 DEG C are warming up into the stage casing of vertical sintering furnace for bead, sinter 15min
It is warming up to 900 DEG C again afterwards to continue to sinter 7min, finally enters vertical sintering furnace hypomere and be cooled to 50 DEG C of holding 30min, produce burning
Tie ore deposit.
Embodiment 2
（1）Sampling analysis：Industrial residue is carried out separately sampled, determine after element species contained therein and content, be used as raw material
It is stand-by；
（2）Dispensing：Dispensing is carried out according to the chemical composition of following mass percent proportioning：6%NiO, 12%Cr2O3, 30%Fe2O3,
19%CaO, 10%SiO2, 23%H2O, obtains raw material；
（3）Mix：The various raw materials obtained after dispensing are well mixed with flux, compound is obtained, sintering is added in compound
Fuel is well mixed, and obtains sintering feed, and flux is lime, and sintering fuel is waste active carbon, and sintering fuel addition is sintering feed matter
The 12% of amount, particle diameter is that the granular mass of the mesh of 160 mesh ~ 200 accounts for 70% in sintering fuel；
（4）Ball processed：Sintering feed is subjected to ball processed, the material bead that particle diameter is 5mm is obtained；
（5）Sintering：Produce sintering deposit after being sintered using vertical sintering furnace to material bead, sintering is concretely comprised the following steps：Thing
Expect that after vertical sintering furnace epimere is preheated to 150 DEG C, 800 DEG C are warming up into the stage casing of vertical sintering furnace for bead, sinter 18min
It is warming up to 900 DEG C again afterwards to continue to sinter 9min, finally enters vertical sintering furnace hypomere and be cooled to 50 DEG C of holding 40min, produce burning
Tie ore deposit.
Embodiment 3
（1）Sampling analysis：Industrial residue is carried out separately sampled, determine after element species contained therein and content, be used as raw material
It is stand-by；
（2）Dispensing：Dispensing is carried out according to the chemical composition of following mass percent proportioning：4%NiO, 10%Cr2O3, 31%Fe2O3,
15%CaO, 15%SiO2, 25%H2O, obtains raw material；
（3）Mix：The various raw materials obtained after dispensing are well mixed with flux, compound is obtained, sintering is added in compound
Fuel is well mixed, and obtains sintering feed, flux is lime, sintering fuel is coal dust, and sintering fuel addition is sintering feed quality
10%, particle diameter is that the granular mass of the mesh of 160 mesh ~ 200 accounts for 60 ~ 70% in sintering fuel；
（4）Ball processed：Sintering feed is subjected to ball processed, the material bead that particle diameter is 4mm is obtained；
（5）Sintering：Produce sintering deposit after being sintered using vertical sintering furnace to material bead, sintering is concretely comprised the following steps：Thing
Expect that after vertical sintering furnace epimere is preheated to 120 DEG C, 800 DEG C are warming up into the stage casing of vertical sintering furnace for bead, sinter 17min
It is warming up to 900 DEG C again afterwards to continue to sinter 8min, finally enters vertical sintering furnace hypomere and be cooled to 50 DEG C of holding 35min, produce burning
Tie ore deposit.
The sintering deposit main performance obtained by the present invention is as follows：
Main chemical compositions（Quality %）： FeO≤10、S≤0.7、P≤0.06；
Physical property：Tumbler index（+6.3mm）>=60, anti-wear index（-0.5mm）<9.0th, screening index<11.0；
Metallurgical performance：Cryogenic reducting powder index（RDI +3.51mm）>=60, reduction degree index（RI）≥29.
Embodiment described above is a kind of preferably scheme of the present invention, not makees any formal to the present invention
Limitation, also has other variants and remodeling on the premise of without departing from the technical scheme described in claim.
Claims (6)
1. a kind of method that utilization industrial residue produces stainless steel smelting sintering deposit, it is characterised in that comprise the following steps：
（1）Sampling analysis：Industrial residue is carried out separately sampled, determine after element species contained therein and content, be used as raw material
It is stand-by；
（2）Dispensing：Chemical ingredients are carried out to raw material according to the requirement of the chemical composition of sintering deposit, raw material is obtained；
（3）Mix：The various raw materials obtained after dispensing are well mixed with flux, compound is obtained, sintering is added in compound
Fuel is well mixed, and obtains sintering feed；
（4）Ball processed：Sintering feed is subjected to ball processed, material bead is obtained；
（5）Sintering：Sintering deposit is produced after being sintered using vertical sintering furnace to material bead.
2. the method that a kind of utilization industrial residue according to claim 1 produces stainless steel smelting sintering deposit, its feature
It is, step（2）In, dispensing is carried out according to the chemical composition of following mass percent proportioning：3 ~ 6%NiO, 10 ~ 15%Cr2O3, 30
~35%Fe2O3, 15 ~ 20%CaO, 10 ~ 15%SiO2, 20 ~ 25%H2O。
3. the method that a kind of utilization industrial residue according to claim 1 produces stainless steel smelting sintering deposit, its feature
It is, step（3）In, the flux is lime, and the sintering fuel is coal dust or waste active carbon, and sintering feed sintering fuel adds
Dosage is the 8 ~ 12% of sintering feed quality.
4. the method that a kind of utilization industrial residue according to claim 3 produces stainless steel smelting sintering deposit, its feature
It is, particle diameter is that the granular mass of the mesh of 160 mesh ~ 200 accounts for 60 ~ 70% in the sintering fuel.
5. the method that a kind of utilization industrial residue according to claim 1 produces stainless steel smelting sintering deposit, its feature
It is, step（4）In, the material bead particle diameter is 3 ~ 5mm.
6. the method that a kind of utilization industrial residue according to claim 1 produces stainless steel smelting sintering deposit, its feature
It is, sintering is concretely comprised the following steps：Material bead is after vertical sintering furnace epimere is preheated to 50 ~ 150 DEG C, into vertical sintering furnace
Stage casing be warming up to 800 DEG C, 900 DEG C are warming up to after 15 ~ 18min of sintering again and continues to sinter 7 ~ 9min, vertical sintering is finally entered
Stove hypomere is cooled to 50 DEG C of 30 ~ 40min of holding, produces sintering deposit.
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Cited By (4)
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| CN109207718A (en) * | 2018-09-30 | 2019-01-15 | 山西太钢不锈钢股份有限公司 | The method for preparing stainless steel raw material sinter using nickel slag |
| CN110760672A (en) * | 2019-09-30 | 2020-02-07 | 浙江特力再生资源有限公司 | Method for producing sintered ore by using industrial solid wastes |
| CN111175333A (en) * | 2020-01-07 | 2020-05-19 | 同济大学 | Building waste soil component rapid analysis and compound regulation and control method |
| CN111471852A (en) * | 2020-06-16 | 2020-07-31 | 武汉钢铁有限公司 | Method for sintering waste activated carbon powder, sintering mixture and sintered ore |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109207718A (en) * | 2018-09-30 | 2019-01-15 | 山西太钢不锈钢股份有限公司 | The method for preparing stainless steel raw material sinter using nickel slag |
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| CN111175333A (en) * | 2020-01-07 | 2020-05-19 | 同济大学 | Building waste soil component rapid analysis and compound regulation and control method |
| CN111471852A (en) * | 2020-06-16 | 2020-07-31 | 武汉钢铁有限公司 | Method for sintering waste activated carbon powder, sintering mixture and sintered ore |
| CN111471852B (en) * | 2020-06-16 | 2021-10-01 | 武汉钢铁有限公司 | Method for sintering waste activated carbon powder, sintering mixture and sintered ore |
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Application publication date: 20171010 |