CN101768457A - Non-coal-series composite additive and application thereof in coking - Google Patents
Non-coal-series composite additive and application thereof in coking Download PDFInfo
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- CN101768457A CN101768457A CN201010103310A CN201010103310A CN101768457A CN 101768457 A CN101768457 A CN 101768457A CN 201010103310 A CN201010103310 A CN 201010103310A CN 201010103310 A CN201010103310 A CN 201010103310A CN 101768457 A CN101768457 A CN 101768457A
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- 239000000654 additive Substances 0.000 title claims abstract description 93
- 230000000996 additive effect Effects 0.000 title claims abstract description 89
- 238000004939 coking Methods 0.000 title claims abstract description 81
- 239000002131 composite material Substances 0.000 title claims abstract description 39
- 239000000571 coke Substances 0.000 claims abstract description 201
- 239000003245 coal Substances 0.000 claims abstract description 174
- 239000000843 powder Substances 0.000 claims abstract description 78
- 238000000034 method Methods 0.000 claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 19
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 10
- 239000005864 Sulphur Substances 0.000 claims description 10
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 230000009257 reactivity Effects 0.000 abstract description 35
- 238000003723 Smelting Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000002006 petroleum coke Substances 0.000 abstract 1
- 238000010791 quenching Methods 0.000 description 11
- 230000000171 quenching effect Effects 0.000 description 11
- 238000012856 packing Methods 0.000 description 10
- 239000000470 constituent Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 2
- 239000011335 coal coke Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The invention belongs to the field of coal processing, and relates to a non-coal-series composite additive and application thereof in coal blending coking4Two or more than two of C powder, SiC powder and petroleum coke. Adding 0.05-10 wt% of composite additive into the blended coal, mixing uniformly, crushing and coking. The non-coal-series composite additive is applied to coal blending and can reduce cokeThe carbon reactivity is 2-18 percentage points, the strength of the coke after reaction is improved by 5-23 percentage points, and the ash content of the coke is reduced by 0.2-1.0 percentage point. Residual substances in the coke have no negative influence on blast furnace smelting and are suitable for industrial production. Solves the problem that a large amount of strong caking coal is added to meet certain strength after the coke reaction in the existing coking process.
Description
Technical field
The invention belongs to coal processing field, relate to non-coal measures composite additive and the application in mixed coal coking thereof.
Background technology
Conventional mixed coal coke making process will reach the purpose that improves coke quality, have to use strong caking coal to carry out mixed coal coking in a large number, particularly improve the strong caking coal that coke reactivity and post-reaction strength need be allocated particular locality into by coal blending, coking coal and rich coal as Shanxi area, such coal reserves is very limited, and postreaction strength of coke will reach 65%, need allocate about 75%～80% strong caking coal into, cause present mixed coal coking actual use proportioning and coking coal reserves ratio seriously unbalance, verified the coking coal reserves and used decades by the only enough exploitations of present usage ratio.Change coke making process, as, tamping coking, briquetted coal blending coking also can improve coke quality within the specific limits.Therefore be necessary to develop out the additive that a kind of mixed coal coking is used, realize many purposes of improving coke quality with the weakly caking coal coal blending.
Summary of the invention
The object of the present invention is to provide a kind of non-coal measures composite additive and the application in coking thereof, the non-coal measures composite additive that passes through to be provided reduces coke reactivity, improve postreaction strength of coke, reduce coke ash, and then reach the purpose of improving coke quality, also solved in the existing process of coking simultaneously, allocated the problem of a large amount of strong caking coals into for satisfying the certain coke post-reaction strength.
The object of the present invention is achieved like this, a kind of non-coal measures composite additive, and it is characterized in that: described additive is by B
4The material of two or more in C powder, SiC powder and the refinery coke is formed.
Further, described additive is by B
4Two kinds of materials of C powder and SiC powder are formed, and the weight percent of each component is: B
4C powder 1%～91%, SiC powder 9%～99%.
Described additive is made up of SiC powder and two kinds of materials of refinery coke, and the weight percent of each component is: SiC powder 5%～71%, refinery coke 29%～95%.
Described additive is by B
4Two kinds of materials of C powder and refinery coke are formed, and the weight percent of each component is: B
4C powder 0.5%～71%, refinery coke 29%～99.5%.
Described additive is by B
4C powder, SiC powder and three kinds of materials of refinery coke are formed, and the weight percent of each component is: B
4C powder 0.6%～67%, SiC powder 0.3%～71%, refinery coke 17%～95%.
Further, in the above-mentioned non-coal measures composite additive, B
4The C powder accounts for 100% by the weight percent of 200 mesh sieve, and is preferred, B
4The C powder accounts for more than 95% by the weight percent of 300 mesh sieve; The SiC powder accounts for 100% by the weight percent of 500 mesh sieve.
Further, in the above-mentioned non-coal measures composite additive, B
4The purity of C is not less than 95%, and is preferred, above-mentioned B
4The purity of C is not less than 99%; The purity of SiC is not less than 95%.
Further, in the above-mentioned non-coal measures composite additive, refinery coke ash content≤1%, sulphur content≤0.5%, volatile matter 10%～18%.
The present invention also provides a kind of application above-mentioned non-coal measures composite additive mixed coal coking process, and the interpolation weight percent is 0.05%～10% additive in mixed coal, carries out coking after mixing and the pulverizing.
The present invention compares with prior art, has the following advantages and positively effect:
The present invention relates to non-coal measures composite additive, be applied in the coal blending, can reduce by 2～18 percentage points of coke reactivities, postreaction strength of coke improves 5～23 percentage points, and coke ash reduces by 0.2～1.0 percentage point.Residual substance in coke does not have negative impact to blast-furnace smelting, is suitable for suitability for industrialized production.Improved coke quality, solved in the existing process of coking, allocated the problem of a large amount of strong caking coals into for satisfying the certain coke post-reaction strength.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
The preparation of non-coal measures composite additive:
The present invention will be by B
4After the additive preparation that the material of two or more in C powder, SiC powder and the refinery coke is formed, place stand-by.
Use non-coal measures composite additive mixed coal coking process: (per-cent involved in the present invention " % " all is weight percentage)
One, utilizes B
4C powder and SiC powder constituent additive mixed coal coking process
Embodiment 1: mixed coal coking is added by B
4The additive of C powder and SiC powder constituent, wherein, purity 95%, 100% is by the B of 200 mesh sieves
4The C powder is 17%; Purity 95%, 100% is 83% by the SiC powder of 500 mesh sieves.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 15%, rich coal 25%, coking coal 40%, lean coal 10%.Mixed coal is added 0.6% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, the post-reaction strength of coke by standard GB/T4000-1996.Coke reactivity is reduced to 24%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 4 percentage points; Postreaction strength of coke reaches 61%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 8 percentage points.
Embodiment 2: mixed coal coking is added by B
4The additive of C powder and SiC powder constituent, wherein, purity 99%, 95% is by the B of 300 mesh sieves
4The C powder is 23%; Purity 95%, 100% is 77% by the SiC powder of 500 mesh sieves.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 15%, rich coal 25%, coking coal 40%, lean coal 10%.Mixed coal is added 1.3% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, the post-reaction strength of coke by standard GB/T4000-1996.Coke reactivity is reduced to 21%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 7 percentage points; Postreaction strength of coke reaches 66%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 13 percentage points
Two, utilize SiC powder and refinery coke to form additive mixed coal coking process
Embodiment 3: the additive of being made up of SiC powder and refinery coke is added in mixed coal coking, and wherein, purity 95%, 100% is 25% by the SiC powder with 500 mesh sieves; Ash content 1%, sulphur content 0.5%, the refinery coke of volatile matter 10% are 75%.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 15%, rich coal 25%, coking coal 43%, lean coal 7%.
Mixed coal is added 4% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, post-reaction strength and the coke ash of coke by standard GB/T4000-1996.Coke reactivity is reduced to 25%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 2 percentage points; Postreaction strength of coke reaches 60%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 5 percentage points; Coke ash is reduced to 12%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke ash reduces by 0.5 percentage point.
Embodiment 4: the additive of being made up of SiC powder and refinery coke is added in mixed coal coking, and wherein, purity 95%, 100% is 23% by the SiC powder of 500 mesh sieves; Pure ash content 1%, sulphur content 0.5%, the refinery coke of volatile matter 10% are 77%.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 15%, rich coal 25%, coking coal 45%, lean coal 5%.
Mixed coal is added 6.5% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, post-reaction strength and the coke ash of coke by standard GB/T4000-1996.Coke reactivity is reduced to 23%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 4 percentage points; Postreaction strength of coke reaches 63%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 8 percentage points; Coke ash is reduced to 11.75%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke ash reduces by 0.75 percentage point.
Three, utilize B
4C powder and refinery coke are formed additive mixed coal coking process
Embodiment 5: mixed coal coking is added by B
4The additive that C powder and refinery coke are formed, wherein, purity 95%, 100% is by the B of 200 mesh sieves
4The C powder is 14%; Ash content 1%, sulphur content 0.5%, the refinery coke of volatile matter 10% are 86%.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 15%, rich coal 20%, coking coal 48%, lean coal 7%.
Mixed coal is added 3.5% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, post-reaction strength and the coke ash of coke by standard GB/T4000-1996.Coke reactivity is reduced to 18%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 9 percentage points; Postreaction strength of coke reaches 67%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 8 percentage points; Coke ash is reduced to 11.98%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke ash reduces by 0.52 percentage point.
Embodiment 6: mixed coal coking is added by B
4The additive that C powder and refinery coke are formed, wherein, purity 99%, 95% is by the B of 300 mesh sieves
4The C powder is 17%; Ash content 1%, sulphur content 0.5%, the refinery coke of volatile matter 10% are 83%.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 20%, rich coal 20%, coking coal 45%, lean coal 5%.
Mixed coal is added 6% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, post-reaction strength and the coke ash of coke by standard GB/T4000-1996.Coke reactivity is reduced to 14%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 13 percentage points; Postreaction strength of coke reaches 71%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 12 percentage points; Coke ash is reduced to 11.7%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke ash reduces by 0.8 percentage point.
Four, utilize B
4C powder, SiC powder and three kinds of materials of refinery coke are formed additive mixed coal coking process
Embodiment 7: mixed coal coking is added by B
4The additive that C powder, SiC powder and three kinds of materials of refinery coke are formed, wherein, purity 95%, 100% is by the B of 200 mesh sieves
4The C powder is 17%; Purity 95%, 100% is 17% by the SiC powder of 500 mesh sieves; Ash content 1%, sulphur content 0.5%, the refinery coke 66% of volatile matter 10%.
The mixed coal ratio, bottle coal 8%, 1/3 coking coal 15%, rich coal 25%, coking coal 42%, lean coal 10%.
Mixed coal is added 3% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, post-reaction strength and the coke ash of coke by standard GB/T4000-1996.Coke reactivity is reduced to 17%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 8 percentage points; Postreaction strength of coke reaches 69%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 9 percentage points; Coke ash is reduced to 12.1%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke ash reduces by 0.4 percentage point.
Embodiment 8: mixed coal coking is added by B
4The additive that C powder, SiC powder and three kinds of materials of refinery coke are formed, wherein, purity 95%, 100% is by the B of 200 mesh sieves
4The C powder is 33%; Purity 95%, 100% is 11% by the SiC powder of 500 mesh sieves; Ash content 1%, sulphur content 0.5%, the refinery coke of volatile matter 10% are 56%.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 20%, rich coal 25%, coking coal 40%, lean coal 5%.
Mixed coal is added 9% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours is used in the method quenching, detects reactivity, post-reaction strength and the coke ash of coke by standard GB/T4000-1996.Coke reactivity is reduced to 10%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 15 percentage points; Postreaction strength of coke reaches 74%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 14 percentage points; Coke ash is reduced to 11.8%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke ash reduces by 0.7 percentage point.
Embodiment 9: mixed coal coking is added by B
4The additive that C powder, SiC powder and three kinds of materials of refinery coke are formed, wherein, purity 95%, 100% is by the B of 200 mesh sieves
4The C powder is 75%; Purity 95%, 100% is 3% by the SiC powder of 500 mesh sieves; Ash content 1%, sulphur content 0.5%, the refinery coke of volatile matter 10% are 22%.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 15%, rich coal 25%, coking coal 42%, lean coal 8%.
Mixed coal is added 9.3% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, post-reaction strength and the coke ash of coke by standard GB/T4000-1996.Coke reactivity is reduced to 8.8%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke reactivity reduces by 16.2 percentage points; Postreaction strength of coke reaches 78%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, postreaction strength of coke improves 18 percentage points; Coke ash is reduced to 12.2%, with the mixed coal that does not add additive and the coke ratio that adopts same coke making process, coke ash reduces by 0.3 percentage point.
Five, utilize the non-coal measures composite additive of the present invention to reduce strong caking coal proportioning, use weakly caking coal mixed coal coking process more
Conventional mixed coal ratio and corresponding performance: the mixed coal ratio, 1/3 coking coal 15%, rich coal 30%, coking coal 45%, lean coal 10%, coking time 16 hours adopts dry quenching(of coke), detects reactivity, the post-reaction strength of coke by standard GB/T4000-1996.Coke reactivity 21%, postreaction strength of coke 65%.
Embodiment 10: mixed coal coking is added by B
4The additive that C powder, SiC powder and three kinds of materials of refinery coke are formed, wherein, purity 95%, 100% is by the B of 200 mesh sieves
4The C powder is 27%; Purity 95%, 100% is 7% by the SiC powder of 500 mesh sieves; Ash content 1%, sulphur content 0.5%, the refinery coke of volatile matter 10% are 66%.
The mixed coal ratio, bottle coal 10%, 1/3 coking coal 20%, rich coal 27%, coking coal 38%, lean coal 5%.
Mixed coal is added 7.5% above-mentioned composite additive, and the coke oven of packing into carries out coking, and coking time 16 hours adopts dry quenching(of coke), detects reactivity, the post-reaction strength of coke by standard GB/T4000-1996.Coke reactivity is reduced to 20%, and postreaction strength of coke reaches 66%.Allocate the problems of a large amount of strong caking coals by many solution in the existing process of coking into for satisfying the certain coke post-reaction strength with weakly caking coal.
The present invention in use, added in the mixed coal after both can having prepared in proportion by the above-mentioned additive that two or more material is formed, also can convert according to the weight percent of the composite additive that is added, the weight percent that the various materials of forming composite additive is accounted for mixed coal respectively adds in the coal.With embodiment 10 is example, and each material accounts for the addition of the weight percent of mixed coal respectively and is when adding respectively: B
4C powder 27% * 7.5%=2.03%; SiC powder 7% * 7.5%=0.53%; Refinery coke is 66% * 7.5%=4.95%.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (10)
1. non-coal measures composite additive, it is characterized in that: described additive is by B
4The material of two or more in C powder, SiC powder and the refinery coke is formed.
2. a kind of non-coal measures composite additive according to claim 1, it is characterized in that: described additive is by B
4Two kinds of materials of C powder and SiC powder are formed, and the weight percent of each component is: B
4C powder 1%～91%, SiC powder 9%～99%.
3. a kind of non-coal measures composite additive according to claim 1 is characterized in that: described additive is made up of SiC powder and two kinds of materials of refinery coke, and the weight percent of each component is: SiC powder 5%～71%, refinery coke 29%～95%.
4. a kind of non-coal measures composite additive according to claim 1, it is characterized in that: described additive is by B
4Two kinds of materials of C powder and refinery coke are formed, and the weight percent of each component is: B
4C powder 0.5%～71%, refinery coke 29%～99.5%.
5. a kind of non-coal measures composite additive according to claim 1, it is characterized in that: described additive is by B
4C powder, SiC powder and three kinds of materials of refinery coke are formed, and the weight percent of each component is: B
4C powder 0.4%～80%, SiC powder 2.4%～49%, refinery coke 14%～95%.
6. according to claim 1,2,4,5 any described a kind of non-coal measures composite additives, it is characterized in that: B
4The C powder accounts for 100% by the weight percent of 200 mesh sieve.
7. according to claim 1,2,4,5 any described a kind of non-coal measures composite additives, it is characterized in that: B
4The C powder accounts for more than 95% B by the weight percent of 300 mesh sieve
4The purity of C is not less than 95%.
8. according to claim 1,2,3,5 any described a kind of non-coal measures composite additives, it is characterized in that: the SiC powder accounts for 100% by the weight percent of 500 mesh sieve, and the purity of SiC is not less than 95%.
9. according to claim 1,3,4,5 any described a kind of non-coal measures composite additives, it is characterized in that: refinery coke ash content≤1%, sulphur content≤0.5%, volatile matter 10%～18%.
10. an application rights requires 1～9 any described non-coal measures composite additive mixed coal coking process, it is characterized in that: the interpolation weight percent is 0.05%～10% additive in mixed coal, carries out coking after mixing and the pulverizing.
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| CN 201010103310 CN101768457B (en) | 2010-01-28 | 2010-01-28 | Non-coal-series composite additive and application thereof in coking |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559230A (en) * | 2010-12-11 | 2012-07-11 | 鞍钢股份有限公司 | Coal blending coking process |
| CN104610993A (en) * | 2015-02-09 | 2015-05-13 | 马新攀 | Coking additive for improving coke performance and coking method |
| CN110540848A (en) * | 2019-09-17 | 2019-12-06 | 上海茜昆实业发展有限公司 | High-strength coke and preparation method thereof |
| CN115353902A (en) * | 2022-08-19 | 2022-11-18 | 中冶焦耐(大连)工程技术有限公司 | Additive for enhancing thermal state performance of coke and use method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0004922B1 (en) * | 1978-04-14 | 1981-07-15 | Great Lakes Carbon Corporation | Coke for use in the production of gray iron; method of producing said coke and method of producing gray iron by using said coke |
| US4294610A (en) * | 1978-04-14 | 1981-10-13 | Great Lakes Carbon Corporation | Foundry coke |
| WO1995027766A1 (en) * | 1994-04-07 | 1995-10-19 | Nippon Steel Chemical Co., Ltd. | Needle coke for graphite electrode and process for producing the same |
| US20070093587A1 (en) * | 2005-10-25 | 2007-04-26 | Starfire Systems | Silicon carbide precursors and uses thereof |
-
2010
- 2010-01-28 CN CN 201010103310 patent/CN101768457B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559230A (en) * | 2010-12-11 | 2012-07-11 | 鞍钢股份有限公司 | Coal blending coking process |
| CN104610993A (en) * | 2015-02-09 | 2015-05-13 | 马新攀 | Coking additive for improving coke performance and coking method |
| CN110540848A (en) * | 2019-09-17 | 2019-12-06 | 上海茜昆实业发展有限公司 | High-strength coke and preparation method thereof |
| CN115353902A (en) * | 2022-08-19 | 2022-11-18 | 中冶焦耐(大连)工程技术有限公司 | Additive for enhancing thermal state performance of coke and use method thereof |
| CN115353902B (en) * | 2022-08-19 | 2024-03-19 | 中冶焦耐(大连)工程技术有限公司 | Additive for enhancing thermal state performance of coke and application method thereof |
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| CN101768457B (en) | 2013-03-13 |
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