CN115141665B - Coke matched with Australian gas coal and coking method - Google Patents
Coke matched with Australian gas coal and coking method Download PDFInfo
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- CN115141665B CN115141665B CN202110331961.0A CN202110331961A CN115141665B CN 115141665 B CN115141665 B CN 115141665B CN 202110331961 A CN202110331961 A CN 202110331961A CN 115141665 B CN115141665 B CN 115141665B
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- 239000003245 coal Substances 0.000 title claims abstract description 211
- 239000000571 coke Substances 0.000 title claims abstract description 110
- 238000004939 coking Methods 0.000 title claims abstract description 88
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 230000009257 reactivity Effects 0.000 claims abstract description 7
- 239000004079 vitrinite Substances 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 239000000084 colloidal system Substances 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 7
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000002310 reflectometry Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000012458 free base Substances 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 2
- 230000004927 fusion Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 55
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011335 coal coke Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229940029329 intrinsic factor Drugs 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- Life Sciences & Earth Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Organic Chemistry (AREA)
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- Coke Industry (AREA)
Abstract
The invention discloses a coke matched with Australian gas coal and a coking method, which mainly solve the technical problems that the Australian gas coal has low cohesiveness and poor fusion with other coking coals, and is difficult to be used for coking by matching coal to produce high-quality metallurgical coke with stable quality. The technical scheme is that the coke matched with Australian gas coal is formed by mixing and coking the following coal blends in percentage by mass: 16 to 20 percent of 1/3 coking coal, 5 to 10 percent of Australian gas coal, 2 to 5 percent of other gas coal, 15 to 19 percent of fat coal, 41 to 45 percent of coking coal, 8 to 10 percent of lean coal and 100 percent of the sum of the mass percentages of all the components of the matched coal; the dry ashless base volatile component of Australian gas coal is 37.1-38.9%, the maximum vitrinite reflectance is 0.66-0.75%, and the bonding index G is 72-78; the reactivity of the coke is 22-24%, and the strength of the coke after reaction is 68-70%.
Description
Technical Field
The invention relates to a coke and a coking method, in particular to a coke and a coking method matched with Australian gas coal, belonging to the technical field of coal chemical industry.
Background
In the coking and coal blending technology, the selection of coal types is a key technology. The level of coal selection technology determines not only the quality of coke but also the cost of blending coal on the basis of ensuring the quality of coke.
In recent years, with the expansion of the Chinese coking capacity, the contradiction of the shortage of high-quality coking coal resources is also increasingly prominent, and particularly, the supply of high-quality coking coal as an important coal for coking and blending is more intense, so that the high-quality coking coal becomes one of the competing focuses of various coking enterprises. The coking enterprises have to search for new resources abroad, but the coking characteristics, geological characteristics and the like of the coking enterprises have own characteristics due to different coking coal forming conditions of the coking enterprises, and the volatile matters and the bonding performance indexes meet the classification standards of the coking coals in China, so that the application of imported coal types is difficult.
The document "research on blending coal with Australian mainstream gas coal" (Fan Guoguang, liu Kehui, cheng Qiguo, once made; fuel and chemical industry, 2019 (01)) describes Australian mainstream gas coal, mainly resources produced from Australian international large ores (BHP, LITU, etc.), and has not yet obtained complete acceptance or lack of knowledge in the imported international coking coal market, such as gas coal in producing areas such as Australian Jianenke (Australian Levin gas coal), huntion valley (Australian Mao Lisi Bay gas coal).
The maximum fluidity of Australian mainstream gas coal is relatively low, liquid phase products in the colloid are fewer, and the number of freely moving unit bodies is relatively small; the plastic interval is relatively narrow, the meltability is relatively weak in the coal blending coking process, and the semicoke is formed to shrink and solidify too early, so that the structural uniformity of the coke is affected, and the microcracks of the coke are increased. The volatile matter Vdaf of the Rainbow gas coal of the African mainstream gas coal is 36.87%, the bonding index G is 81.66, and the maximum thickness Y of the colloid layer is 9.66mm; mao Lisi the gas-coal volatile matter Vdaf was 40.89%, the bonding index G was 72.95, and the maximum thickness Y of the gum layer was 9.07mm. The ratio of Australian non-main stream gas coal is 4.7-5.3%, the mass M 40 of the obtained coke is 88.19-88.46%, and the CSR of the coke is 66.63-67.73%. The mixing and solidifying structural proportion of the Rayleigh gas coal is 19%, the proportion of the coking coal is 51%, the obtained coke M 40 reaches 88.97%, and the CSR of the coke reaches 68.33%; mao Lisi gas-coal blending and curing structure proportion is 13%, coking coal proportion reaches 60%, obtained coke M 40 reaches 88.56%, and coke CSR reaches 69.92%. The ratio of the coking coal which is a high-quality scarce coking coal resource is higher than 51% -60%, and the meaning of reducing the cost by using the non-main stream gas coal is lost due to the high ratio of the coking coal.
In the above documents, experimental study and production application are carried out on Australian gas coal, and the main reason for the fact that high-proportion coking coal is used together with Australian gas coal is that Australian gas coal has low deterioration degree and high volatile content, and the quality of coke is reduced to a certain extent.
Disclosure of Invention
The invention aims to provide a coke matched with Australian gas coal and a coking method, which mainly solve the technical problems that the Australian gas coal has low cohesiveness and poor fusion with other coking coals, and is difficult to be used for coking by matched coal to produce high-quality metallurgical coke with stable quality; the coke produced by the invention is high-quality metallurgical coke, and meets the requirement of blast furnace smelting of 4000m 3 and above.
The method of the invention adds Australian gas coal into the coal blending raw material, ensures the quality of the coal blending to reach the index of high-quality coking coal by skillfully designing the coal blending process, and can produce high-quality metallurgical coke with stable quality on the top-loading coke oven.
The invention adopts the technical scheme that the coke matched with Australian gas coal is formed by mixing and coking the following coal blends in percentage by mass: 16 to 20 percent of 1/3 coking coal, 5 to 10 percent of Australian gas coal, 2 to 5 percent of other gas coal, 15 to 19 percent of fat coal, 41 to 45 percent of coking coal, 8 to 10 percent of lean coal and 100 percent of the sum of the mass percentages of all the components of the blended coal.
The dry ash-free base volatile component V daf of the Australian gas coal is 37.1-38.9%, the maximum vitrinite reflectivity is 0.66-0.75%, the bonding index G is 72-78, and the maximum thickness Y of a colloid layer is 10-12 mm.
The coal quality of other various single coking coals used by the invention accords with the classification index in the corresponding Chinese national standard.
The dry ash-free volatile component V daf of the blended coal is 25-27%, the bonding index G is 78-82, and the maximum thickness Y of the colloid layer is 14-16 mm.
After blending, the blended coal is crushed, and the proportion of the blended coal with the particle size smaller than 3mm accounting for 73.0-74.9% of the total mass of the blended coal.
The coke of the invention is high-strength metallurgical coke, the coke reactivity CRI is 22-24%, the strength CSR after the coke reaction is 68-70%, and the coke drum strength88-90%, The coke crushing strength M 40 is 88-90%, and the coke abrasion resistance M 10 is less than 6.0%.
The coking method for the Australian gas coal comprises the following steps:
1) Blending coal, namely blending 16-20% of 1/3 coking coal, 5-10% of Australian gas coal, 2-5% of other gas coal, 15-19% of fat coal, 41-45% of coking coal and 8-10% of lean coal according to the following mass percentage; the sum of the mass percentages of the components of the blended coal is 100 percent; the volatile component of the Australian gas coal is 37.1-38.9%, the maximum vitrinite reflectivity is 0.66-0.75%, the bonding index G is 72-78, and the maximum thickness Y of the colloid layer is 10-12 mm;
2) Crushing the blended coal, namely crushing the blended coal after blending;
3) Coking by using the mixed coal, and sending the crushed mixed coal into a top-loading coke oven for coking at the coking temperature of 1000+/-50 ℃ for 22+/-2 hours;
4) Cooling the coke after discharging the coke.
And then, performing coke quality detection, and measuring indexes such as coke ash, coke sulfur content, coke reactivity, strength after reaction and the like.
Further, the dry ash-free volatile component V daf of the blended coal is 25-27%, the bonding index G is 78-82, and the maximum thickness Y of the colloid layer is 14-16 mm.
Further, after the mixed coal is crushed, the mixed coal with the grain diameter smaller than 3mm accounts for 73.0-74.9% of the total mass of the mixed coal, so as to ensure that high-quality coke is obtained.
Further, the coke oven is a coke oven with the height of the coke oven carbonization chamber of 6.0-7.0 m.
Further, the coke cooling adopts a dry quenching mode, the coke is cooled by adopting nitrogen (also called dry quenching cooling), and the red and hot coke is cooled by adopting nitrogen, so that not only can the moisture of the coke be reduced, but also the change of quenching of the coke can be reduced, and the reduction of the strength of the coke is avoided. The nitrogen after heat exchange with the coke can be recycled for thermal power generation and the like, thereby avoiding energy waste.
The coke produced by the method is high-strength metallurgical coke, the coke reactivity CRI is 22-24%, the strength CSR after the coke reaction is 68-70%, and the coke drum strength88-90%, The coke crushing strength M 40 is 88-90%, and the coke abrasion resistance M 10 is less than 6.0%.
The applicant researches find that the Australian gas coal has lower cohesiveness and poorer fusion with other coking coals; the coal types belong to the QM45 of the gas coal according to the China coal classification, but the caking property of the coal types is very low and is different from the common domestic gas coal. In addition, the Australian gas coal single coking test shows that the optical structure of the obtained single coke is low in the grain and coarse grain mosaic structure, and the grain and coarse grain mosaic structure is an intrinsic factor for ensuring the strength of the coke, so that the coke strength is low. This presents difficulties in the production and use of australian gas coal in coal blending coking.
The above-mentioned requirements for coal blending quality are derived from studies on the quality characteristics of australian gas coal. Researches show that the coke microstructure is mainly composed of fine grain embedded structures, the grain and coarse grain embedded structures are lower, a direction is provided for further coal replacement, and coking coals with higher middle grain and coarse grain embedded structures are used for compensation.
The research shows that the maximum vitrinite reflectance of Australian gas coal is 0.66% -0.75%, the existing gas coal can be partially replaced, and the caking index G is only 72-78, which is similar to lean coal, and the lean coal can be partially replaced, so that the coal species is proposed to replace part of gas coal and lean coal, and the influence on the quality of blended coal is reduced.
Experiments show that after the technical scheme is adopted, the macroscopic index bonding index G (the capability of representing the bonding of coking coal and inert substances) of the blended coal can be controlled to be 78-82, and the maximum colloid layer thickness Y (the quantity of colloid bodies generated in the coking process of representing the coking coal) is 14-16 mm; the crushing strength M 40 of the coke is 88-90%, and the strength CSR of the coke after reaction is 68-70%, so that the coke can meet the requirements of blast furnace smelting of 4000M 3 and above.
Compared with the prior art, the invention has the following positive effects: 1. expands the coking coal resources and reduces the production cost of coal blending. The traditional thought of using Australian gas coal as the power coal is broken through, the Australian gas coal is used for coal blending and coking instead of partial gas coal and lean coal, the range of coking coal is enlarged, and resources are optimally utilized; the market price of the Australian gas coal is generally low, so the production cost of the blended coal is reduced through the blending of the Australian gas coal. 2. The coke quality is maintained. The invention breaks through the limitation of coking by the traditional national standard classification according to the coking coal blending method, proposes corresponding control indexes according to the characteristics of Australian gas coal, maintains the quality of coke by controlling the embedded structures of middle grains and coarse grains and replacing coal types, and ensures that the coke meets the requirements of blast furnace ironmaking. 3. The coking and coal blending method for blending Australian gas coal can meet the quality requirement of high-quality metallurgical coke in coke produced by a common top-loading coke oven.
Detailed Description
The invention is further illustrated below with reference to examples, as shown in table 1.
The coke matched with Australian gas coal is formed by mixing and coking the following coal blends in percentage by mass: 16 to 20 percent of 1/3 coking coal, 5 to 10 percent of Australian gas coal, 2 to 5 percent of other gas coal, 15 to 19 percent of fat coal, 41 to 45 percent of coking coal, 8 to 10 percent of lean coal and 100 percent of the sum of the mass percentages of all the components of the blended coal.
According to the embodiment of the invention, the dry ash-free base volatile component V daf of the Australian gas coal is 37.1-38.9%, the maximum vitrinite reflectance is 0.66-0.75%, the bonding index G is 72-78, and the maximum thickness Y of a colloid layer is 10-12 mm; the performance parameters of the coal blend are shown in Table 1.
According to the embodiment of the invention, the coking is carried out through a 6m top-loading coal coke oven, and the coking time is designed to be 20h for a 6.0m coke oven; three proportions are adopted for verification, and in schemes 2-4, the proportion of Australian gas coal to the total mass of the blended coal is 6%, 8% and 10% respectively. The specific proportions of the coal blend in the examples of the present invention are shown in Table 1.
The coking method for the Australian gas coal comprises the following steps:
1) Blending coal, namely blending 16-20% of 1/3 coking coal, 5-10% of Australian gas coal, 2-5% of other gas coal, 15-19% of fat coal, 41-45% of coking coal and 8-10% of lean coal according to the following mass percentage; the sum of the mass percentages of the components of the blended coal is 100 percent;
2) Crushing the mixed coal, wherein the mixed coal after mixing is crushed, and the mixed coal with the particle size less than 3mm accounts for 73.0-74.9% of the total mass of the mixed coal after crushing;
3) Coking with mixed coal, feeding crushed mixed coal into a top-loading coke oven for coking, wherein the height of a coking chamber of the coke oven is 6.0m, the coking temperature is 1000 ℃, and the coking time is 20 hours;
4) And cooling the coke after discharging the coke, wherein a dry quenching mode is adopted for coke cooling.
Then, the coke quality is detected, and indexes such as the crushing strength M 40, the wear resistance M 10, the coke reactivity and the strength after reaction are measured, and the measurement results are shown in table 1.
The dry ashless base volatile component V daf of the blended coal is 25-27%, the caking index is 78-82, and the blended coal is coked with five types of coal of 1/3 coking coal, gas coal, fat coal, coking coal and lean coal in the prior art to obtain coke with basically the same mass, the crushing strength M 40 of the coke is more than 88%, and the strength (CSR) of the coke after reaction is 68-70%.
Table 1 the mass percent and coke performance parameters of the coking blending coal of the inventive example
From the measurement results of schemes 2 to 4 in table 1, it can be seen that after the Australian gas coal is used to replace part of lean coal and gas coal, the obtained coke quality data are basically the same as the data measured in scheme 1 without Australian gas coal, and can completely meet the requirement of blast furnace smelting of 4000m 3 and above.
In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the invention.
Claims (8)
1. The coke matched with Australian gas coal is characterized by being prepared by mixing and coking the following coal blends in percentage by mass: 16 to 20 percent of 1/3 coking coal, 5 to 10 percent of Australian gas coal, 2 to 5 percent of other gas coal, 15 to 19 percent of fat coal, 41 to 45 percent of coking coal, 8 to 10 percent of lean coal and 100 percent of the sum of the mass percentages of all the components of the matched coal; the dry ash-free base volatile component V daf of the Australian gas coal is 37.1-38.9%, the maximum vitrinite reflectivity is 0.66-0.75%, the bonding index G is 72-78, and the maximum thickness Y of a colloid layer is 10-12 mm; the coke is high-strength metallurgical coke, the coke reactivity CRI is 22-24%, the strength CSR after the coke reaction is 68-70%, and the coke drum strength88-90%, The coke crushing strength M 40 is 88-90%, and the coke abrasion resistance M 10 is less than 6.0%.
2. The coke for use with australian gas coal as claimed in claim 1, wherein the dry ashless base volatile V daf of the blended coal is 25 to 27%, the caking index G is 78 to 82, and the gum layer maximum thickness Y is 14 to 16mm.
3. The coke for blending Australian gas coal according to claim 1, wherein the blended coal is crushed after blending, and the proportion of the blended coal with the particle size of less than 3mm to the total mass is 73.0-74.9%.
4. A coking method matched with Australian gas coal, which is characterized by comprising the following steps:
1) Blending coal, namely blending 16-20% of 1/3 coking coal, 5-10% of Australian gas coal, 2-5% of other gas coal, 15-19% of fat coal, 41-45% of coking coal and 8-10% of lean coal according to the following mass percentage; the sum of the mass percentages of the components of the blended coal is 100 percent; the volatile component of the Australian gas coal is 37.1-38.9%, the maximum vitrinite reflectivity is 0.66-0.75%, the bonding index G is 72-78, and the maximum thickness Y of the colloid layer is 10-12 mm;
2) Crushing the blended coal, namely crushing the blended coal after blending;
3) Coking by using the mixed coal, and sending the crushed mixed coal into a top-loading coke oven for coking at the coking temperature of 1000+/-50 ℃ for 22+/-2 hours;
4) Cooling the coke after discharging the coke.
5. The coking method with Australian gas coal as claimed in claim 4, wherein after the coal is crushed, the ratio of the coal with particle size less than 3mm to the total mass is 73.0-74.9%; the dry ash-free volatile component V daf of the blended coal is 25-27%, the bonding index G is 78-82, and the maximum thickness Y of the colloid layer is 14-16 mm.
6. The coking method with Australian gas coal according to claim 4, wherein the coke oven is a coke oven with a coke oven coking chamber height of 6.0-7.0 m.
7. The method for coking with Australian gas coal according to claim 4, wherein the coke cooling is by dry quenching.
8. The method for coking with Australian gas coal according to claim 4, wherein the coke is a high strength metallurgical coke, the coke reactivity CRI is 22-24%, the strength after the coke reaction CSR is 68-70%, the coke drum strength88-90%, The coke crushing strength M 40 is 88-90%, and the coke abrasion resistance M 10 is less than 6.0%.
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2483950A1 (en) * | 1980-06-10 | 1981-12-11 | Siderurgie Fse Inst Rech | Blast furnace operation using reductants of different reactivity - comprising metallurgical coke and carbonaceous material of lower gasification temp. |
| JP2003268381A (en) * | 2002-03-13 | 2003-09-25 | Jfe Steel Kk | Method for manufacturing highly reactive coke with high strength useful for blast furnace |
| CN102374955A (en) * | 2010-08-12 | 2012-03-14 | 宝山钢铁股份有限公司 | Method for measuring coke strength and strength after reaction in high temperature environment |
| CN102994129A (en) * | 2012-12-03 | 2013-03-27 | 广东韶钢松山股份有限公司 | Gas coal blended coking blending coal and preparation method thereof |
| CN202884901U (en) * | 2012-09-27 | 2013-04-17 | 烟台龙源电力技术股份有限公司 | Boiler capable of realizing reignition of exhaust gas coal powder by using high-temperature flue gas and reducing NOx |
| JP2014015641A (en) * | 2012-07-06 | 2014-01-30 | Kobe Steel Ltd | Blast furnace operation method using ashless coal-blended coke |
| CN104694145A (en) * | 2013-12-06 | 2015-06-10 | 上海梅山钢铁股份有限公司 | Coke matched with Indonesian gas coal and coking method thereof |
| CN105112083A (en) * | 2015-08-20 | 2015-12-02 | 河北钢铁股份有限公司邯郸分公司 | Method for high-volatile coking coal blending |
| CN105219412A (en) * | 2014-06-24 | 2016-01-06 | 上海梅山钢铁股份有限公司 | A kind of coke of adapted Australian coking coal and coking process |
| CN105925294A (en) * | 2016-05-16 | 2016-09-07 | 武汉钢铁股份有限公司 | Control method for coke particle size uniformity |
| CN108865199A (en) * | 2018-07-11 | 2018-11-23 | 安徽工业大学 | A kind of method and its application of lignite modifying process |
| CN109111938A (en) * | 2017-06-26 | 2019-01-01 | 上海梅山钢铁股份有限公司 | A kind of coke and coking process of the Australian low bonding coking coal of adapted |
| CN111944550A (en) * | 2020-09-03 | 2020-11-17 | 攀钢集团研究院有限公司 | Tamping coking mixed coal material with low coke-pushing current |
-
2021
- 2021-03-29 CN CN202110331961.0A patent/CN115141665B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2483950A1 (en) * | 1980-06-10 | 1981-12-11 | Siderurgie Fse Inst Rech | Blast furnace operation using reductants of different reactivity - comprising metallurgical coke and carbonaceous material of lower gasification temp. |
| JP2003268381A (en) * | 2002-03-13 | 2003-09-25 | Jfe Steel Kk | Method for manufacturing highly reactive coke with high strength useful for blast furnace |
| CN102374955A (en) * | 2010-08-12 | 2012-03-14 | 宝山钢铁股份有限公司 | Method for measuring coke strength and strength after reaction in high temperature environment |
| JP2014015641A (en) * | 2012-07-06 | 2014-01-30 | Kobe Steel Ltd | Blast furnace operation method using ashless coal-blended coke |
| CN202884901U (en) * | 2012-09-27 | 2013-04-17 | 烟台龙源电力技术股份有限公司 | Boiler capable of realizing reignition of exhaust gas coal powder by using high-temperature flue gas and reducing NOx |
| CN102994129A (en) * | 2012-12-03 | 2013-03-27 | 广东韶钢松山股份有限公司 | Gas coal blended coking blending coal and preparation method thereof |
| CN104694145A (en) * | 2013-12-06 | 2015-06-10 | 上海梅山钢铁股份有限公司 | Coke matched with Indonesian gas coal and coking method thereof |
| CN105219412A (en) * | 2014-06-24 | 2016-01-06 | 上海梅山钢铁股份有限公司 | A kind of coke of adapted Australian coking coal and coking process |
| CN105112083A (en) * | 2015-08-20 | 2015-12-02 | 河北钢铁股份有限公司邯郸分公司 | Method for high-volatile coking coal blending |
| CN105925294A (en) * | 2016-05-16 | 2016-09-07 | 武汉钢铁股份有限公司 | Control method for coke particle size uniformity |
| CN109111938A (en) * | 2017-06-26 | 2019-01-01 | 上海梅山钢铁股份有限公司 | A kind of coke and coking process of the Australian low bonding coking coal of adapted |
| CN108865199A (en) * | 2018-07-11 | 2018-11-23 | 安徽工业大学 | A kind of method and its application of lignite modifying process |
| CN111944550A (en) * | 2020-09-03 | 2020-11-17 | 攀钢集团研究院有限公司 | Tamping coking mixed coal material with low coke-pushing current |
Non-Patent Citations (5)
| Title |
|---|
| Effect of Coarser Fraction on Coke Strength After Reaction (CSR) of Coke Plant Blend at Tata Steel;Das, Bidyut;《INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION》;20180831;第38卷(第6期);316-320 * |
| 大比例气煤配煤炼焦技术研究;刘克辉;何矿年;宋建勤;;宝钢技术(第06期) * |
| 王宇魁.《中国煤炭市场发展报告》.山西经济出版社,2019,245. * |
| 韩提文等人.《肥煤 提高 焦炭 反应后强度》.天津大学出版社,2020,180. * |
| 马钢新区4000m3高炉提高煤比实践;惠志刚、丁晖;《炼铁》;20090831;第28卷(第4期);22-25 * |
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