CN101338206A - Coking additive agent and use thereof - Google Patents
Coking additive agent and use thereof Download PDFInfo
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- CN101338206A CN101338206A CNA2008103042814A CN200810304281A CN101338206A CN 101338206 A CN101338206 A CN 101338206A CN A2008103042814 A CNA2008103042814 A CN A2008103042814A CN 200810304281 A CN200810304281 A CN 200810304281A CN 101338206 A CN101338206 A CN 101338206A
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- coke
- coal
- sio
- coking
- additive
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Abstract
The invention relates to a coking additive and the application thereof, belonging to the coal processing field. The technical problem to be solved is to improve the coke quality and in particular to lower the thermal reaction of the coke. The coking additive is SiO2 powder which can pass through a sieve 100. The best purity of the additive is larger than 99 percent. SiO2 is creatively applied to the improvement of the performance of the coke by the invention. The reaction of the obtain coke can be lowered by 2-6 percent points. At the same time, with low cost, the coke additive of the invention brings no secondary pollutions. Residuals in the coke bring no negative effects on the blast furnace smelting. And the coking additive is especially applied to the industrialized production.
Description
Technical field
The invention belongs to coal processing field, be specifically related to a kind of coking additire and application thereof that improves coke quality.
Background technology
Along with the further increase of smelting strength of blast furnace, blast furnace progressively improves the requirement of raw material.If particularly coke quality can further improve, just blast furnace is increased injecting coal quantity, reduce the coke consumption and reduce the ironmaking production cost significant.
The method of generally improving coke quality be in mixed coal with addition of the cohesiveness material, as cohesiveness materials such as pitch, tar, the quality of utilizing the cohesiveness of additive when coking to improve mixed coal improves the coke quality purpose to reach; In addition also can be by changing coke making process, as tamping coking, join moulded coal, the bulk density that changes the shove charge coal improves coke quality.Disclose a kind of coke spray agent among the Chinese patent CN1392223 " a kind of coke modification method ", all can improve coke quality to a certain extent, but these methods are all invested greatly the shortcoming that the cycle is long when enforcement.And the coke produced of the method that has even blast furnace operating had a negative impact.
At present, the coking coal resource of China is petered out, all there is the situation of coking coal resource anxiety in the coke-oven plant of each iron and steel enterprise, the coking coal major part is from mineral bureau, there are characteristics such as bad adhesion in mineral bureau's coal, must add a part of heavy caking coal,, cause cost to increase as ground heavy caking coals such as Yunnan and Guizhou.
Given this, research and develop out and can improve coke quality, the coking of coking coal resource that again can saves valuable just seems particularly important with additive.
Summary of the invention
Technical problem to be solved by this invention is to improve coke quality, especially reduces its result.The technical scheme that solves this technical problem provides a kind of coking additire.This coking additire is the SiO that can cross 100 mesh sieves
2Powder.Preferably, above-mentioned SiO
2Have 80% can cross 200 mesh sieves in the powder by weight percentage.
Further, above-mentioned SiO
2Purity be not less than 95%.Preferably, above-mentioned SiO
2Purity be not less than 99%.
Simultaneously, the present invention also provides SiO
2Purposes in improving coke property.
Preferably, above-mentioned SiO
2For crossing the powder of 100 mesh sieves.
Preferred, above-mentioned SiO
2Have 80% can cross 200 mesh sieves in the powder by weight.
Further, above-mentioned SiO
2Purity be not less than 99%.Preferably,, above-mentioned SiO
2Purity be not less than 99%.
In addition, the present invention also provides the using method of above-mentioned coking additire.This method is: with SiO
2Grind the purity that to cross 100 mesh sieves to be not less than 95% powder with ball mill, in coal, add 0.25%～2.5% SiO by weight ratio
2Powder carries out coking after mixing and the pulverizing.In general, purity hour will reach identical effect, needs suitably to increase the consumption of coking additire.SiO
2Granularity preferably have 80% can cross 200 mesh sieves by weight.Its purity also preferably can be not less than 99%, so better effect can be arranged.
The beneficial effect of the burnt additive of the present invention is: creatively with SiO
2Be used in and improve among the coke property, uses coking additire of the present invention 2～6 percentage points of the reactivity reductions of the coke that makes can have been improved coke property widely; The raw material of coke additive of the present invention is conventional raw material simultaneously, and cost is low, can guarantee the big area life-time service; Coke additive of the present invention does not in addition contain explosive hazardous substance, mixing safety, and addition is few, can not bring secondary pollution; And the most important thing is owing to SiO in the coke ash
2Account for mainly, the raw material that the present invention adopts remains in the coke blast-furnace smelting is not had a negative impact, and more is applicable to suitability for industrialized production.
Embodiment
, do not limit embodiment the present invention below in conjunction with further setting forth.
The preparation of embodiment one coke additive of the present invention
Get the SiO of purity 99%
2, use ball mill to grind and to cross the powder of 100 mesh sieves, and wherein have 80% can cross 200 mesh sieves by weight percentage.Place stand-by.
Embodiment two uses traditional technology to prepare coke
Mixed coal proportioning: crust coking coal 20%, lattice coking coal 10%, Guizhou coal 10%, natural resources coal 5%, Huaping coal 25%, suburb coal 10%, Longchang coal 5%, wide flourish coal 5%, lean coal 10%, mixed coal moisture content 10.3%.Get mixed coal 400g, corundum crucible pack into (in the Φ 80mm * 110mm), use the 3kg weight with mixed coal compacting 5min in the crucible again, take off the mass sealing, put into retort furnace (400mm * 150mm * 200mm) destructive distillation, 18 ℃/min of heat-up rate, be warming up to 1100 ℃, constant temperature 100min, take out the water quenching, be broken into granularity after the cooling and be 5～10mm and do heat reactivity (the heat reactivity measuring method is with reference to GB GB/T4000-1996, the burnt sample of the 20g that packs in reactor, when bed of material core temperature reaches 400 ℃, the flow N of logical 0.8L/min
2The protection coke when material layer temperature reaches 1100 ℃, cuts off N
2, change logical CO
2, flow is 5L/min, stops heating behind the reaction 40min, cuts off CO
2Air-flow changes logical N
2, flow control is cooled to below 100 ℃ at 2L/min, stops logical N
2, take out the weighing of coke sample.Coke loses the per-cent that weight accounts for into stove weight and is reactivity).Coke reactivity is 43.1%.
Embodiment three uses coke additive preparation coke of the present invention
Mixed coal proportioning: crust coking coal 20%, lattice coking coal 10%, Guizhou coal 10%, natural resources coal 5%, Huaping coal 25%, suburb coal 10%, Longchang coal 5%, wide flourish coal 5%, lean coal 10%, mixed coal moisture content 10.3%.Mixed coal 400g, SiO
22g (SiO
2Granularity-200 order account for 90%, purity 99%) mixing, corundum crucible pack into (in the Φ 80mm * 110mm), use the 3kg weight with mixed coal compacting 5min in the crucible again, take off the mass sealing, put into retort furnace (400mm * 150mm * 200mm) destructive distillation, 18 ℃/min of heat-up rate, be warming up to 1100 ℃, constant temperature 100min takes out the water quenching, being broken into granularity after the cooling and being 5～10mm does heat reactivity (the heat reactivity measuring method is with reference to GB GB/T4000-1996, the burnt sample of the 20g that in reactor, packs into, when bed of material core temperature reaches 400 ℃, the flow N of logical 0.8L/min
2The protection coke when material layer temperature reaches 1100 ℃, cuts off N
2, change logical CO
2, flow is 5L/min, stops heating behind the reaction 40min, cuts off CO
2Air-flow changes logical N
2, flow control is cooled to below 100 ℃ at 2L/min, stops logical N
2, take out the weighing of coke sample.Coke loses the per-cent that weight accounts for into stove weight and is reactivity).Coke reactivity is 41.5%.The same with other raw materials and working condition, only not add the coke that the control group of coking additire of the present invention refines and compare (coke of preparation among the embodiment one), reactivity has reduced by 1.6 former branches.
Embodiment four uses coke additive preparation coke of the present invention
Mixed coal proportioning: crust coking coal 20%, lattice coking coal 10%, Guizhou coal 10%, natural resources coal 5%, Huaping coal 25%, suburb coal 10%, Longchang coal 5%, wide flourish coal 5%, lean coal 10%, mixed coal moisture content 10.3%.Mixed coal 400g, SiO
24g (SiO
2Granularity-200 order account for 90%, purity 98%) mixing, corundum crucible pack into (in the Φ 80mm * 110mm), use the 3kg weight with mixed coal compacting 5min in the crucible again, take off the mass sealing, put into retort furnace (400mm * 150mm * 200mm) destructive distillation, 18 ℃/min of heat-up rate, be warming up to 1100 ℃, constant temperature 100min takes out the water quenching, being broken into granularity after the cooling and being 5～10mm does heat reactivity (the heat reactivity measuring method is with reference to GB GB/T4000-1996, the burnt sample of the 20g that in reactor, packs into, when bed of material core temperature reaches 400 ℃, the flow N of logical 0.8L/min
2The protection coke when material layer temperature reaches 1100 ℃, cuts off N
2, change logical CO
2, flow is 5L/min, stops heating behind the reaction 40min, cuts off CO
2Air-flow changes logical N
2, flow control is cooled to below 100 ℃ at 2L/min, stops logical N
2, take out the weighing of coke sample.Coke loses the per-cent that weight accounts for into stove weight and is reactivity).Coke reactivity is 39.1%.The same with other raw materials and working condition, only not add the coke (coke of preparation among the embodiment one) that the control group of coking additire of the present invention refines and compare, reactivity has reduced by 4.0 percentage points.
Embodiment five uses coke additive preparation coke of the present invention
Mixed coal proportioning: crust coking coal 20%, lattice coking coal 10%, Guizhou coal 10%, natural resources coal 5%, Huaping coal 25%, suburb coal 10%, Longchang coal 5%, wide flourish coal 5%, lean coal 10%, mixed coal moisture content 10.3%.Mixed coal 400g, SiO
26g (SiO
2Granularity-200 order account for 90%, purity 98%) mixing, corundum crucible pack into (in the Φ 80mm * 110mm), use the 3kg weight with mixed coal compacting 5min in the crucible again, take off the mass sealing, put into retort furnace (400mm * 150mm * 200mm) destructive distillation, 18 ℃/min of heat-up rate, be warming up to 1100 ℃, constant temperature 100min takes out the water quenching, being broken into granularity after the cooling is that 5～10mm does heat reactivity (heat reactivity parameter: 1000 ℃ of temperature, coke quality 20g, CO2 gas flow 5L/min, time 40min).Coke reactivity is 37.6%.The same with other raw materials and working condition, only not add the coke that the control group of coking additire of the present invention refines and compare, reactivity has reduced by 5.5 percentage points.
Claims (10)
1. coking additire is characterized in that: described coal additive is SiO that can mistake 100 mesh sieves
2Powder.
2. coking additire according to claim 1 is characterized in that: described SiO
2Have 80% can cross 200 mesh sieves in the powder by weight percentage.
3. coking additire according to claim 1 and 2 is characterized in that: described SiO
2Purity greater than 95%.
4. coking additire according to claim 1 and 2 is characterized in that: described SiO
2Purity greater than 99%.
5.SiO
2Purposes in improving coke property.
6. purposes according to claim 5 is characterized in that described SiO
2For crossing the powder of 100 mesh sieves.
7. purposes according to claim 6 is characterized in that described SiO
2Have 80% can cross 200 mesh sieves in the powder by weight percentage.
8. according to each described purposes of claim 5～7, it is characterized in that described SiO
2Purity greater than 95%.
9. purposes according to claim 8 is characterized in that described SiO
2Purity greater than 99%.
10. the using method of each described coking additire of claim 1～4 is characterized in that: with SiO
2Grind the purity that to cross 100 mesh sieves greater than 99% powder with ball mill, in coal, add 0.25%～2.5% SiO by weight ratio
2Powder carries out coking after mixing and the pulverizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103042814A CN101338206B (en) | 2008-08-29 | 2008-08-29 | Coking additive agent and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103042814A CN101338206B (en) | 2008-08-29 | 2008-08-29 | Coking additive agent and use thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101338206A true CN101338206A (en) | 2009-01-07 |
| CN101338206B CN101338206B (en) | 2012-08-22 |
Family
ID=40212378
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008103042814A Expired - Fee Related CN101338206B (en) | 2008-08-29 | 2008-08-29 | Coking additive agent and use thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199765A (en) * | 2015-09-14 | 2015-12-30 | 镇江华立煤质制样设备有限公司 | Coking additive |
| CN108102678A (en) * | 2018-01-26 | 2018-06-01 | 雷新春 | A kind of new and effective coking additire and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1912056A (en) * | 2005-08-14 | 2007-02-14 | 雷新春 | Anthracite coking additire |
| CN1730628B (en) * | 2005-08-15 | 2010-05-12 | 安阳钢铁集团有限责任公司 | Coke passivator and its usage |
| CN101082008B (en) * | 2007-07-05 | 2010-09-08 | 武汉科技大学 | Coke deactivator containing lanthanide series rare-earth elements and and method of use thereof |
| CN100519711C (en) * | 2007-12-11 | 2009-07-29 | 河南通宇冶材集团有限公司 | Coke passivator and preparation method thereof |
-
2008
- 2008-08-29 CN CN2008103042814A patent/CN101338206B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105199765A (en) * | 2015-09-14 | 2015-12-30 | 镇江华立煤质制样设备有限公司 | Coking additive |
| CN108102678A (en) * | 2018-01-26 | 2018-06-01 | 雷新春 | A kind of new and effective coking additire and preparation method thereof |
| CN108102678B (en) * | 2018-01-26 | 2020-05-19 | 雷新春 | Novel efficient coking additive and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101338206B (en) | 2012-08-22 |
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Granted publication date: 20120822 Termination date: 20160829 |