CN102746865B - Preparation method of formed coke used for smelting-reduction ironmaking - Google Patents
Preparation method of formed coke used for smelting-reduction ironmaking Download PDFInfo
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- CN102746865B CN102746865B CN201110100818.7A CN201110100818A CN102746865B CN 102746865 B CN102746865 B CN 102746865B CN 201110100818 A CN201110100818 A CN 201110100818A CN 102746865 B CN102746865 B CN 102746865B
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Abstract
The invention relates to the field of coke preparation, in particular to a preparation method of formed coke used for smelting-reduction ironmaking. The preparation method of formed coke used for smelting-reduction ironmaking includes the following steps of: first selecting coke powder and fat coal with a particle size of less than 10mm, then mixing the coke powder with the fat coal, conducting crushing and drying, and controlling the moisture below 2%, then adding a binder into the mixture of coke powder and fat coal, mixing them uniformly, then carrying out cold pressing to obtain a molded block, finally subjecting the molded block to high temperature carbonization, and leaving the molded block to natural cooling in the air directly, thus obtaining the formed coke. The formed coke prepared by the method of the invention can partly replace lump coal to be used in a technological process of smelting-reduction ironmaking, thus greatly reducing the risk of coal used for smelting-reduction ironmaking, and also reducing the cost of coal for smelting-reduction ironmaking simultaneously. In addition, the preparation of formed coke provides a new approach utilization of mass coke powder generated during transportation, loading and unloading, and endows coke powder utilization with higher value, thus providing a new possibility of coke powder utilization to coking enterprises and coke using enterprises.
Description
Technical field
The present invention relates to coke preparation field, relate in particular to a kind of fused reduction iron-smelting formed coke preparation method.
Background technology
Constantly strict due to environmental requirement, smelting reduction technology is not because needing coking and sintering two procedures to be subject to extensive concern.In existing ironmaking technique of fusion and reduction, various pollutant effulents significantly reduce than existing blast furnace iron-making process, and sulfur dioxide emissions are only 4.9% of blast furnace.The complementary energy producing in production, waste heat, by-product gas, solid waste etc., can be fully utilized, and forms a complete iron and steel production industry chain of circular economy.
Ironmaking technique of fusion and reduction is directly used lump coal, but to the property indices of lump coal, require harsher in prior art, in ironmaking technique of fusion and reduction that China is producing at present lump coal used, the lump coal that can use in China only has 2 ~ 3 kinds, what this had increased ironmaking technique of fusion and reduction greatly uses coal risk, in order reducing, to use coal risk, to reduce production costs, be necessary to research and develop the alternative materials of lump coal.
China has abundant coal resource, utilizing in process of the energy, larger to the dependency proportion of coal.The processing and utilization coal worker of coal has been carried out to very many-sided work.Wherein the widest approach that utilizes is produced for blast furnace ironmaking for utilizing coal to carry out high temperature carbonization production coke; Coke can produce a large amount of coke powders in transportation loading and unloading process, buys more than 100 ten thousand tons of coke greatly outside 10% left and right ，Ru stainless steel company is annual, and the coke powder of generation just has more than 10 ten thousand tons.For these coke powders, be used for back joining coking except small portion, another part can only be used as crude fuel for sintering plant, causes significant wastage.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of fused reduction iron-smelting formed coke preparation method, thereby obtain the alternative materials of lump coal for fused reduction iron-smelting, reduce fused reduction iron-smelting coal cost, the coke powder producing is carried out to high value added utilization simultaneously in transportation loading and unloading.
The present invention is achieved in that a kind of fused reduction iron-smelting formed coke preparation method, comprises the following steps:
Step 1, select particle diameter to be less than coke powder and the rich coal of 10mm, described rich coal dry basis ash content A
d=8 ~ 10%, described rich coal butt volatile matter VM
d=15 ~ 25%;
Step 2, will coke powder and rich coal pulverize after mixing and obtain the coke powder rich coal mixture that particle diameter is less than 1mm, in the mass percent of coke powder rich coal mixture, coke powder accounts for 85 ~ 91%, and rich coal accounts for 9 ~ 15%, the coke powder rich coal mixture after pulverizing is put into loft drier is dry makes moisture controlled below 2%;
Step 3, binding agent is joined after mixing in coke powder rich coal mixture and colded pressing for type piece, the pressure of colding pressing is 0.8 ~ 1.2MPa, and binding agent add-on is 6 ~ 12% of coke powder rich coal mixture quality;
Step 4, type piece is carried out to high temperature carbonization, carbonization temperature is 850 ~ 900 ℃, and the time of charing is 50 ~ 60min, and after charing, directly in air, naturally cooling obtains formed coke.
Described binding agent is a kind of or mixture in water glass, Walocel MT 20.000PV.
While using water glass and Walocel MT 20.000PV mixture as binding agent, both mass ratioes are 1:2 ~ 4:7.
The formed coke that fused reduction iron-smelting of the present invention is prepared by formed coke preparation method can partly substitute lump coal for ironmaking technique of fusion and reduction process, broken the restriction for melting reduction iron-making furnace to lump coal of prior art medium-sized coal index, break through China and only had the restriction that 2 ~ 3 kinds of lump coal can enough melting reduction iron-making furnaces, greatly reduce fused reduction iron-smelting coal risk, also reduced fused reduction iron-smelting coal cost simultaneously; The a large amount of coke powder utilizations that produce in transportation loading and unloading process that are prepared as of formed coke provide a kind of new approach in addition, make the utilization of coke powder have higher value, for coking enterprise and coke use enterprise at coke powder, provide aspect utilizing a kind of new may.
Accompanying drawing explanation
Fig. 1 is formed coke preparation method FB(flow block) for fused reduction iron-smelting of the present invention.
Embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment are only not used in and limit the scope of the invention for the present invention is described.In addition should be understood that those skilled in the art can make various changes or modifications the present invention after having read the content of the present invention's statement, these equivalent form of values fall within the application's appended claims limited range equally.
Embodiment 1
As shown in Figure 1, a kind of fused reduction iron-smelting formed coke preparation method, comprises the following steps:
Step 1, select particle diameter to be less than coke powder and the rich coal of 10mm, described rich coal dry basis ash content A
d=8 ~ 10%, described rich coal butt volatile matter VM
d=15 ~ 25%;
Step 2, will coke powder and rich coal pulverize after mixing and obtain the coke powder rich coal mixture that particle diameter is less than 1mm, in the mass percent of coke powder rich coal mixture, coke powder accounts for 85 ~ 91%, and rich coal accounts for 9 ~ 15%, the coke powder rich coal mixture after pulverizing is put into loft drier is dry makes moisture controlled below 2%;
Step 3, binding agent is joined to mix and blend in coke powder rich coal mixture, there is not local bonding and become piece in the rear observation of stirring, after even particle size distribution, material after stirring is added in forming machine and colded pressing for type piece, the pressure of colding pressing is 0.8 ~ 1.2MPa, and binding agent add-on is 6 ~ 12% of coke powder rich coal mixture quality; Described binding agent is a kind of or mixture in water glass, Walocel MT 20.000PV;
Step 4, type piece is carried out to high temperature carbonization, carbonization temperature is 850 ~ 900 ℃, and the time of charing is 50 ~ 60min, and after charing, directly in air, naturally cooling obtains formed coke.In carbonization process owing to having added rich coal in coke powder, coke powder is equivalent to inorganic inert material, and rich coal is equivalent to organism, when adding binding agent, binding agent has just served as the bridge of organism and inorganics, inorganics and organism are coupled together by bridged bond, in the process of high temperature carbonization, because rich coal can produce a large amount of plastic masss, plastic mass just can wrap up coke powder, binding agent and rich coal have just formed mutual fusion like this, have been bonded to an organic whole.
While using in the present invention water glass and Walocel MT 20.000PV mixture as binding agent, both mass ratioes are 1:2 ~ 4:7.
In the present embodiment, select particle diameter to be less than 10mm, A
d=8%, VM
d=25% rich coal and particle diameter are less than 10mm coke powder, and to be configured to rich coal content be 9% coke powder rich coal mixture, coke powder rich coal mixture is crushed to particle diameter with pulverizer and is less than 1mm, be put in loft drier and add 6% binding agent after dry, binding agent is the mixture of water glass: Walocel MT 20.000PV=1:2, fully after mix and blend, putting into forming machine coldmoulding under 0.8MPa pressure is type piece, type piece is put into charring furnace charing 50min at 850 ℃, after charing, take out sample naturally cooling in air, it is carried out to performance test results is: TMS+10 is 23.02, TMS-2 is 18.32, RI is 33.24, RSI 40.33 all reaches fused reduction iron-smelting coal requirement.
Embodiment 2
A fused reduction iron-smelting formed coke preparation method, the difference of embodiment 2 and embodiment 1 is, selects particle diameter to be less than 10mm, A
d=9%, VM
d=20% rich coal and particle diameter are less than 10mm coke powder, and to be configured to rich coal content be 12% coke powder rich coal mixture, coke powder rich coal mixture is crushed to particle diameter with pulverizer and is less than 1mm, be put in loft drier and add 8% binding agent after dry, binding agent is the mixture of water glass: Walocel MT 20.000PV=1:2, fully after mix and blend, putting into forming machine coldmoulding under 1.2MPa pressure is type piece, type piece is put into charring furnace charing 50min at 870 ℃, after charing, take out sample naturally cooling in air, it is carried out to performance test results is: TMS+10 is 25.42, TMS-2 is 17.20, RI is 32.15, RSI 41.25 all reaches fused reduction iron-smelting coal requirement.
Embodiment 3
A fused reduction iron-smelting formed coke preparation method, the difference of embodiment 3 and embodiment 1 is, selects particle diameter to be less than 10mm, A
d=10%, VM
d=20% rich coal and particle diameter are less than 10mm coke powder, and to be configured to rich coal content be 15% coke powder rich coal mixture, coke powder rich coal mixture is crushed to particle diameter with pulverizer and is less than 1mm, be put in loft drier and add 10% binding agent after dry, binding agent is the mixture of water glass: Walocel MT 20.000PV=4:7, fully after mix and blend, putting into forming machine coldmoulding under 1.2MPa pressure is type piece, type piece is put into charring furnace charing 60min at 900 ℃, after charing, take out sample naturally cooling in air, it is carried out to performance test results is: TMS+10 is 25.57, TMS-2 is 16.84, RI is 32.47, RSI 41.19 all reaches fused reduction iron-smelting coal requirement.
Embodiment 4
A fused reduction iron-smelting formed coke preparation method, the difference of embodiment 4 and embodiment 1 is, selects particle diameter to be less than 10mm, A
d=10%, VM
d=15% rich coal and particle diameter are less than 10mm coke powder, and to be configured to rich coal content be 15% coke powder rich coal mixture, coke powder rich coal mixture is crushed to particle diameter with pulverizer and is less than 1mm, be put in loft drier and add 12% binding agent after dry, binding agent is the mixture of water glass: Walocel MT 20.000PV=8:15, fully after mix and blend, putting into forming machine coldmoulding under 1.2MPa pressure is type piece, type piece is put into charring furnace charing 55min at 900 ℃, after charing, take out sample naturally cooling in air, it is carried out to performance test results is: TMS+10 is 26.24, TMS-2 is 16.10, RI is 31.35, RSI 42.19 all reaches fused reduction iron-smelting coal requirement.
Claims (3)
1. a fused reduction iron-smelting formed coke preparation method, is characterized in that, comprises the following steps:
Step 1, select particle diameter to be less than coke powder and the rich coal of 10mm, described rich coal dry basis ash content A
d=8 ~ 10%, described rich coal butt volatile matter VM
d=15 ~ 25%;
Step 2, will coke powder and rich coal pulverize after mixing and obtain the coke powder rich coal mixture that particle diameter is less than 1mm, in the mass percent of coke powder rich coal mixture, coke powder accounts for 85 ~ 91%, and rich coal accounts for 9 ~ 15%, the coke powder rich coal mixture after pulverizing is put into loft drier is dry makes moisture controlled below 2%;
Step 3, binding agent is joined after mixing in coke powder rich coal mixture and colded pressing for type piece, the pressure of colding pressing is 0.8 ~ 1.2MPa, and binding agent add-on is 6 ~ 12% of coke powder rich coal mixture quality;
Step 4, type piece is carried out to high temperature carbonization, carbonization temperature is 850 ~ 900 ℃, and the time of charing is 50 ~ 60min, and after charing, directly in air, naturally cooling obtains formed coke.
2. fused reduction iron-smelting as claimed in claim 1 formed coke preparation method, is characterized in that: described binding agent is a kind of or mixture in water glass, Walocel MT 20.000PV.
3. fused reduction iron-smelting as claimed in claim 2 formed coke preparation method, is characterized in that: while using water glass and Walocel MT 20.000PV mixture as binding agent, both mass ratioes are 1:2 ~ 4:7.
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| CN103350997B (en) * | 2013-07-04 | 2015-05-27 | 陕西煤业化工技术研究院有限责任公司 | Technique for preparing activated carbon with powdered coal pyrolysis powdered coke |
| CN103351900B (en) * | 2013-07-04 | 2015-03-18 | 陕西煤业化工技术研究院有限责任公司 | Technique for preparing metallurgy coke with powdered coal pyrolysis powdered coke |
| CN105018122B (en) * | 2014-04-28 | 2017-12-26 | 宝山钢铁股份有限公司 | A kind of formed coke preparation method using COREX pulverized coke instead electric furnace steel making carbon raw materials |
| CN105200178B (en) * | 2014-06-27 | 2017-09-22 | 宝山钢铁股份有限公司 | A kind of iron smelting method of reduction COREX coke usage amounts |
| EP3266855A4 (en) * | 2015-03-04 | 2018-05-23 | Posco | Coal briquettes, method and apparatus for manufacturing the same, and method and apparatus for manufacturing molten iron |
| WO2019017888A1 (en) * | 2017-07-18 | 2019-01-24 | Ekocoke, Llc | Custom coke production |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594503A (en) * | 2004-07-05 | 2005-03-16 | 陕西鼎众环保型焦有限公司 | Method for producing form coke from Jurassic steam coal |
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| CN1112952A (en) * | 1994-12-22 | 1995-12-06 | 何国威 | Coking by one's self with one third of coke and coke powder to produce high quality metallurgical coke and metallurgical casting coke |
| CN1127553C (en) * | 1999-12-22 | 2003-11-12 | 葛立奎 | Method for producing formed coke by using low-ash high-volatile long-flame coal |
| JP4677660B2 (en) * | 2000-10-04 | 2011-04-27 | Ｊｆｅスチール株式会社 | Coking coal blending method for high strength and highly reactive coke production |
| CN100351352C (en) * | 2004-05-24 | 2007-11-28 | 季忠铁 | Metallurgical coke with high strength at high temperature |
| JP5045082B2 (en) * | 2006-11-29 | 2012-10-10 | Ｊｆｅスチール株式会社 | Manufacturing method of high strength coke |
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| CN1594503A (en) * | 2004-07-05 | 2005-03-16 | 陕西鼎众环保型焦有限公司 | Method for producing form coke from Jurassic steam coal |
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| Title |
|---|
| 型煤与型焦粘合剂的研究及开发;康铁良;《农业工程学报》;20061031;第22卷(第S1期);第259-260页 * |
| 康铁良.型煤与型焦粘合剂的研究及开发.《农业工程学报》.2006,第22卷(第S1期),259-260. |
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Effective date of registration: 20200622 Address after: 830022 No. 1 Bayi Road, Toutun River District, the Xinjiang Uygur Autonomous Region, Urumqi Patentee after: XINJIANG BAYI IRON & STEEL Co.,Ltd. Address before: 200122 No. 370 Pu circuit, Shanghai, Pudong New Area Patentee before: BAOSTEEL Group Corp. |