CN1168547C - Iron-containing mud and sintered return mine reuse method - Google Patents
Iron-containing mud and sintered return mine reuse method Download PDFInfo
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- CN1168547C CN1168547C CNB021140553A CN02114055A CN1168547C CN 1168547 C CN1168547 C CN 1168547C CN B021140553 A CNB021140553 A CN B021140553A CN 02114055 A CN02114055 A CN 02114055A CN 1168547 C CN1168547 C CN 1168547C
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Abstract
The present invention relates to a method for recycling ferric dust mud and sintered return mine, particularly to a method for recycling metallurgy waste material, which mainly solves the technical problems of energy consumption, complicated working procedure or no multitudinous conversion and utilization, etc. in the existing method for recycling the ferric dust mud. In the present invention, the sintered return mine is used as a ball core, and is mixed and stirred with the ferric dust mud and ferric waste material powder; by making use of water content in the ferric dust mud, mixed material which has medium granularity and uniform ingredients and can be recycled by a sintering plant is formed in such a manner that the ferric dust mud and the waste material powder are rolled outside the sintered return mine. The mixed material can be used as sintering raw material, and the mixed material has uniform granularity, loose material, no adhering and agglomerate phenomenon and stable ingredient and is similar to the other sintering raw materials such as mineral powder, fluxing agents, coke powder, return mine, etc. The return mine is firmly combined with mud in a rotary furnace, is difficult to powder, and has good sintering performance.
Description
Technical field
What the present invention relates to a kind of metallurgical waste utilizes method, the method that particularly a kind of ion dust mud contaning that produces and sinter return fine utilize again again in the metallurgical production process.
Background technology
The comprehensive utilization of iron-containing waste for many years more and more is subjected to the attention of iron and steel enterprise, it can not only reduce the resource loss of enterprise, reduce the deslagging cost, and can also reduce environmental pollution, but how that these iron-containing wastes are convenient, fast, effectively utilize, be the problem that the iron and steel worker studies intensively for a long time.
The use of revolving furnace mud both at home and abroad has following several approach: (1) participates in sintered material with revolving furnace mud dehydration back, the method shortcoming is: if bone dry, then consuming cost is higher, technical difficulty is big, if moisture content in the revolving furnace mud is taken off to about 20%, agglomerating because of boning, use amount can't reach balanced in the production process.(2) with pump converter mud is squeezed in the compound, the method shortcoming is that pipeline very easily stops up because of mud viscosity is big, and because south is moist, and rainy season is many, raw material moisture content height, use amount is restricted.(3) make cooling agent with being pressed into little fragment of brick or water polo after the revolving furnace mud dehydration for steel-making, this method cost is higher, and up-front investment is bigger, and use amount is limited.Find out that thus these methods all respectively have drawback, effect is also relatively poor.
Summary of the invention
The object of the present invention is to provide a kind of energy-conservation, convenient method of utilizing again of the ion dust mud contaning of trans-utilization and sinter return fine in a large number again.The objective of the invention is to be achieved through the following technical solutions: with small sintering ore as ball, it is mixed stirring with ion dust mud contaning, the useless powder of iron content, and utilize moisture content in the ion dust mud contaning, make small sintering ore roll ion dust mud contaning outward and the waste material powder forms compound.
It is to be primary raw material with ion dust mud contaning and sinter return fine, mixes useless powder of a spot of iron content or dust-removing powder, and its mixed proportion is: ion dust mud contaning is 35-65%, returns mine to be 30-50%, and useless powder of iron content or dust-removing powder are 0-20%.
Its concrete operations flow process is; Bof sludge, sinter return fine, the useless powder of iron content and 4 kinds of iron-containing wastes of dust-removing powder are placed 4 hoppers 1 of feed belt top respectively, thereby various iron-containing wastes are unloaded in proportion down on the belt 2 of hopper 1 below through control hopper 1 blanking valve, belt will be in proportion confected materials be transported in screw mixer 3 after once stirring, send in the secondary mixer 4 and finish after stockplling belt 5 output natures are in heaps through the secondary stirring, this finished product compound 6 in heaps promptly becomes the sintering plant available materials.
The present invention is that the characteristic research according to revolving furnace mud draws, because of the characteristic distributions of the grade of revolving furnace mud has two peak values when 0.5 μ m and the 110 μ m, content between these two peak values is less, and maximum capillary water content is higher, effectively good retentiveness and balling-up, mud viscosity is with the improve of the concentration of mud, after revolving furnace mud dewatered prevailingly, water content generally still had 20-30%, and the very easily sticking funnel that directly comes into operation causes putty, after its continuation drying, required expense is too high again.
According to the characteristic of returning mine, returning mine itself has certain temperature, is generally 60-80 ℃, not water content, have abundant capillary hole wall, water imbibition is quite strong, and granularity is at 0-3mm, be suitable for doing ball, calcium oxide CaO content generally reaches 10-12% in returning mine, and can produce efflorescence to a certain degree after the suction.
Dust-removing powder, or claim the gas powder, it is not moisture, but water imbibition is poor, and granularity is little.
Therefore, the present invention is characteristics of utilizing above-mentioned several iron-containing wastes, with revolving furnace mud also other ion dust mud contaning and sinter return fine be primary raw material, mix a spot of dust-removing powder, mix according to a certain percentage.Its basic mechanism is to return mine as ball, utilize the characteristic of its suction, make revolving furnace mud mud be rolled in the surface of returning mine equably, because the moisture 20-30% that reaches of revolving furnace mud, therefore the revolving furnace mud that is rolled in the surface still has quite a few water content, can also wrap up in the superfine waste material powder of one deck dust-removing powder or other granularity on its surface again, it is moderate to form granularity at last, the compound of uniform ingredients.
Ratio by the compound granularity 〉=3.0mm after the above method processing accounts for more than 60%, moisture content≤8.0%, this compound can be used as a kind of raw materials for sintering, the same with Iron Ore Powder, flux, coke powder, other raw materials for sintering such as return mine, this compound epigranular and material loosening, agglomerating phenomenon can not bond, and compound ingredient stability, returning mine combines firmly with revolving furnace mud, is difficult for efflorescence, and sintering character is good.
After utilizing this compound to make raw materials for sintering, alternative iron ore concentrate and flux have reduced cost widely, and the digestibility and utilization iron-containing waste does not need iron-containing waste is effluxed, and has protected environment, has created considerable economic and social benefit.
Description of drawings
Fig. 1 is a process structure schematic diagram of the present invention.
The specific embodiment
As shown in Figure 1, with bof sludge, sinter return fine, the useless powder of iron content and 4 kinds of iron-containing wastes of dust-removing powder place 4 hoppers 1 of feed belt top respectively, thereby various iron-containing wastes are unloaded in proportion down on the belt 2 of hopper 1 below through control hopper 1 blanking valve, belt will be in proportion confected materials be transported in screw mixer 3 after once stirring, send in the secondary mixer 4 and finish after stockplling belt 5 output natures are in heaps through the secondary stirring, this finished product compound 6 in heaps promptly becomes the sintering plant available materials, can transport sintering plant to by automobile or train and participate in batching.
Claims (3)
1, the method utilized again of a kind of ion dust mud contaning and sinter return fine, it is characterized in that with small sintering ore as ball, it is mixed stirring with ion dust mud contaning, the useless powder of iron content, and utilize the moisture content in the ion dust mud contaning, make small sintering ore roll ion dust mud contaning and waste material powder formation compound outward.
2, the method for utilizing again according to the described ion dust mud contaning of claim 1 and sinter return fine, it is characterized in that with ion dust mud contaning and sinter return fine be primary raw material, mix useless powder of a spot of iron content or dust-removing powder, its mixed proportion is: ion dust mud contaning is 35-65%, returning mine is 30-50%, and useless powder of iron content or dust-removing powder are 0-20%.
3, the method of utilizing again according to the described ion dust mud contaning of claim 1 and sinter return fine, it is characterized in that bof sludge, sinter return fine, the useless powder of iron content and 4 kinds of iron-containing wastes of dust-removing powder place 4 hoppers [1] of feed belt top respectively, process controls hopper [1] thereby the blanking valve unloads on the belt [2] of hopper [1] below various iron-containing wastes in proportion down, belt will be in proportion confected materials be transported in the screw mixer [3] after once stirring, send in the secondary mixer [4] and finish after stockplling belt [5] output nature is in heaps through the secondary stirring, this finished product compound [6] in heaps promptly becomes the sintering plant available materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021140553A CN1168547C (en) | 2002-04-15 | 2002-04-15 | Iron-containing mud and sintered return mine reuse method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021140553A CN1168547C (en) | 2002-04-15 | 2002-04-15 | Iron-containing mud and sintered return mine reuse method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1385255A CN1385255A (en) | 2002-12-18 |
| CN1168547C true CN1168547C (en) | 2004-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021140553A Expired - Fee Related CN1168547C (en) | 2002-04-15 | 2002-04-15 | Iron-containing mud and sintered return mine reuse method |
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| CN (1) | CN1168547C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972702B (en) * | 2010-09-26 | 2014-06-04 | 中冶长天国际工程有限责任公司 | Comprehensive dust recycling technology and system for sintering machine head electric precipitation |
| CN103031430B (en) * | 2011-09-29 | 2015-03-11 | 鞍钢股份有限公司 | Method for manufacturing sintering bed charge by adopting high-proportion return ores |
| CN102492833B (en) * | 2011-11-16 | 2013-06-19 | 内蒙古包钢钢联股份有限公司 | Method for applying ferric dust in sintering |
| CN104975169B (en) * | 2014-04-10 | 2017-05-24 | 鞍钢股份有限公司 | Method for improving air permeability of sintering mixture |
| CN105274325B (en) * | 2014-06-27 | 2018-07-31 | 上海梅山钢铁股份有限公司 | A method of realizing super sintering at deep bed |
| CN104278145B (en) * | 2014-10-15 | 2017-01-11 | 首钢总公司 | Method for producing sintering ore |
| CN106755982B (en) * | 2016-12-14 | 2018-09-11 | 四川德胜集团钒钛有限公司 | A kind of bentonite distribution and device |
| CN107267747B (en) * | 2017-06-20 | 2019-01-01 | 武汉钢铁有限公司 | The method for promoting chromium-bearing sludge evenly dispersed in agglomeration for iron mine material |
| CN112062545A (en) * | 2020-07-30 | 2020-12-11 | 玉溪新兴钢铁有限公司 | Iron-dust-containing mud ball and preparation method and application thereof |
| CN113214871A (en) * | 2021-04-28 | 2021-08-06 | 新疆八一钢铁股份有限公司 | Method for cooperative treatment of oil sludge by using Ou-Meta furnace |
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2002
- 2002-04-15 CN CNB021140553A patent/CN1168547C/en not_active Expired - Fee Related
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| CN1385255A (en) | 2002-12-18 |
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