CN105713632A - Coal blending method mainly using fat coal - Google Patents
Coal blending method mainly using fat coal Download PDFInfo
- Publication number
- CN105713632A CN105713632A CN201410712216.0A CN201410712216A CN105713632A CN 105713632 A CN105713632 A CN 105713632A CN 201410712216 A CN201410712216 A CN 201410712216A CN 105713632 A CN105713632 A CN 105713632A
- Authority
- CN
- China
- Prior art keywords
- coal
- blending
- coking
- vitrinite
- coke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 256
- 238000002156 mixing Methods 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000004079 vitrinite Substances 0.000 claims abstract description 49
- 238000004939 coking Methods 0.000 claims abstract description 47
- 239000000571 coke Substances 0.000 claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000002310 reflectometry Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 8
- 239000003337 fertilizer Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 3
- 239000002802 bituminous coal Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Coke Industry (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides a coal blending method mainly based on fat coal, which comprises the steps of carrying out coal rock determination on single coal, superposing the determination results of the coal rocks, identifying each index of a vitrinite reflectance distribution graph of the superposed blended coal to determine whether the blended coal is a reasonable and effective coal blending scheme, carrying out coking production according to the determined coal blending scheme, detecting the quality of obtained coke, and evaluating the coal blending scheme according to the thermal indexes of the coke to determine the rationality of the coal blending scheme. The invention is based on coal rock blending, is a low-cost coal blending method mainly based on fat coal, has the characteristics of simple operation, easy realization and the like, and the coke produced by the method has good quality, can completely meet the coke demand for large blast furnaces, and realizes low-cost coal blending of enterprises.
Description
Technical field
The invention belongs to metallurgical coke production technical field, especially relate to a kind of blending method based on rich coal.
Background technology
The Coal Blending Technology of China's most enterprises is still and adopts based on coking coal, rich coal, the coal blending mode that bottle coal, rich coal, coking coal coordinate by a certain percentage.In the face of the coking coal resource of China, existing market come coal situation and enterprise's own situation, the problem that the Coal Blending Technology that each enterprise adopts exists following four aspects:
1, in the coking coal resource amount that China has been found that, bottle coal accounts for 46.9%, and rich coal, coking coal are less than 40%.And the fertilizer of institute's adapted, coking coal kind are often beyond 60% in the Coal Blending Schemes of reality, this contradicts with the coking coal resource situation of China.
2, the single grade coal sold on domestic market is all mixed coal.For coking coal: by adjusting the proportioning of each coal in mixed coal, G-value, Y value, volatilization traditional coal matter index of grading can be made to reach the requirement of coking coal coal, and wherein the proportioning of real coking coal have unexpectedly less than 50%, therefore apply this coal and do not have its due effect in coal blending, so that original Coal Blending Technology distortion.
3, Some Enterprises has carried out Blending of Coal Petrography application, but, the method that each enterprise adopts is more complicated, and the coal type requirements carrying out coal is higher, it is necessary to Coal Blending more, simultaneously, owing to the professional requirement of manufacturing enterprise operator is higher, it is therefore hard to obtain on-the-spot application.
4, at present with fertile, coking coal for the Blending of coking coal, the allocation ratio of coking coal coal often exceeds 40%, therefore so that the coal blending cost of enterprise is higher.
The mixture that coal is made up of multiple organic compound and mineral, is made up of multiple lithotype of coal.Different maceral different in kinds, their effect in coal blending is also different.Therefore, it can be said that any coal is all a kind of " natural coal blending ".Simultaneously as the coking coal overwhelming majority in the market is artificial mixed coal, therefore, the method still relying upon traditional bottle coal, rich coal, coking coal, each single grade coal proportioning of lean coal, chlorine adding ratio distortion will be made, the large blast furnace demand to high grade coke can not be met.
In the face of limited coal resources and the raw-material situation of steel industry high price, it is badly in need of developing a kind of low cost Coal Blending Technology being suitable for each enterprise, to protect the high-quality coal resource that China reduces day by day and the production cost reducing enterprise, improves the competitiveness of enterprise.
Summary of the invention
The purpose of the present invention aims to provide a kind of based on Blending of Coal Petrography, based on rich coal, it may be achieved the blending method of enterprise's low cost coal blending.
The technical solution that the present invention takes is:
A kind of blending method based on rich coal, it is characterized in that, single grade coal is carried out coal petrography mensuration, and coal petrography measurement result is overlapped, the mixed coal vitrinite reflectance Butut after superposition is carried out indices discriminating, to determine whether for rationally effective Coal Blending Schemes, coking production is carried out by determined Coal Blending Schemes, gained coke quality is detected, according to coke hot index, Coal Blending Schemes is evaluated, to determine the reasonability of Coal Blending Schemes；Concrete grammar and step be:
(1), utilize coal petrography analyzing software system and polarizing microscope automatic measurement system, according to GB6948-2008 " coal vitrinite reflectance determination method ", coking is carried out the average maximum reflectivity of vitrinite with each single grade coalMeasure；
(2), in conjunction with traditional multiple trade mark coal Coal Blending Schemes, each trade mark coal blend ratio is proposed, and the above-mentioned each single grade coal reflectance map recorded is overlapped according to proportioning, if the vitrinite reflectance scattergram after superposition is normal distribution shape, smooth without recess, and it is defined as theoretical Coal Blending Schemes by this scheme after the standard deviation > 0.2 of normal distribution；
(3) in the distributed data, after vitrinite reflectance superposition, if the ratio that the average maximum reflectivity of the vitrinite of mixed coal is between 0.9～1.2 is more than the ratio between 1.2～1.5, using this scheme as preliminary Coal Blending Schemes；
(4) each single grade coal is adopted three-dimensional machinery mixed coal device to carry out mixed coal by the ratio, in preliminary Coal Blending Schemes determined, mixed coal sample dries 1h at 105 DEG C, makes mixed coal, then extracts 200～500g mixed coal coal sample, carries out testing coke oven test；
(5), the coke that testing coke oven produces is carried out heat-state intensity index detection by GB/T4000-2008, if hot strength reaches CRI≤30%, CSR >=60%, think that the coke quality produced according to this Coal Blending Schemes meets the prescription that large blast furnace is burnt, be defined as final Coal Blending Schemes by this scheme；If not up to intensity index, then return to step (2), re-start said process, until up to standard.
Described single grade coal is bituminous coal, specifically includes: bottle coal, gas rich coal, 1/3 coking coal, rich coal, coking coal, thin coking coal, lean coal, meager lean coal, meager coal.
The described coking average maximum reflectivity of each single grade coal coal vitriniteThe scope of measurement result is between 0.5～2.5, and is 8 minizones by this interval subdivision, and coal corresponding to each minizone is:
Require that the average maximum reflectivity of vitrinite has at least a kind of single grade coal in each interval that 0.8～1.9 comprises.
Each trade mark coal described in step (2) is bottle coal, 1/3 coking coal, fertilizer one, fertilizer two, Jiao Yi, Jiao two, thin coking coal, lean coal and meager coal.
The invention have the benefit that
The present invention, based on Blending of Coal Petrography, is a kind of low cost blending method based on rich coal.The method has simple to operate, and the feature such as is easily achieved, and adopts the coke quality that the method produces better, is fully able to and meets large blast furnace Jiao's demand, and realizes the low cost coal blending of enterprise.
Detailed description of the invention
Concrete grammar and the step of the present invention blending method based on rich coal be:
(1), utilize coal petrography analyzing software system and polarizing microscope automatic measurement system, according to GB6948-2008 " coal vitrinite reflectance determination method ", coking is carried out the average maximum reflectivity of vitrinite with each single grade coalMeasure；
(2), in conjunction with traditional multiple trade mark coal Coal Blending Schemes, each trade mark coal blend ratio is proposed, and the above-mentioned each single grade coal reflectance map recorded is overlapped according to proportioning, if the vitrinite reflectance scattergram after superposition is normal distribution shape, smooth without recess, and it is defined as theoretical Coal Blending Schemes by this scheme after the standard deviation > 0.2 of normal distribution；
(3) in the distributed data, after vitrinite reflectance superposition, if the ratio that the average maximum reflectivity of the vitrinite of mixed coal is between 0.9～1.2 is more than the ratio between 1.2～1.5, using this scheme as preliminary Coal Blending Schemes；
(4) each single grade coal is adopted three-dimensional machinery mixed coal device to carry out mixed coal by the ratio, in preliminary Coal Blending Schemes determined, mixed coal sample dries 1h at 105 DEG C, makes mixed coal, then extracts 200～500g mixed coal coal sample, carries out testing coke oven test；
(5), the coke that testing coke oven produces is carried out heat-state intensity index detection by GB/T4000-2008, if hot strength reaches CRI≤30%, CSR >=60%, think that the coke quality produced according to this Coal Blending Schemes meets the prescription that large blast furnace is burnt, be defined as final Coal Blending Schemes by this scheme；If not up to intensity index, then return to step (2), re-start said process, until up to standard.
The described coking average maximum reflectivity of each single grade coal coal vitriniteThe scope of measurement result is between 0.5～2.5, and is 8 minizones by this interval subdivision, and coal corresponding to each minizone is in Table 1:
Table 1 coal for coking vitrinite reflectance table corresponding to coal
Require that the average maximum reflectivity of vitrinite has at least a kind of single grade coal in each interval that 0.8～1.9 comprises.
Embodiment 1:
Mixed coal ratio is as follows: 1/3 coking coal: 16%；Fertile one: 10%；Fertile two: 17%；Burnt 1#: 10%；Burnt 1#: 10%；Burnt 1#: 12%；Burnt two: 16%；Lean coal: 9%.
Theoretical coal blending vitrinite reflectance result: vitrinite average reflectance Re:1.231；Maximum reflectance of vitrinite Rmax:1.311；The standard deviation of vitrinite reflectance scattergram normal distribution: 0.252.In each interval, vitrinite reflectance is distributed in Table 2.
The theoretical mixed coal vitrinite reflectance distribution table of table 2
| Coal | Bottle coal | 1/3 coking coal | Rich coal | Coking coal | Thin coking coal | Lean coal | Meager coal |
| Vitrinite reflectance is interval | 0.65-0.8 | 0.8-0.9 | 0.9-1.2 | 1.2-1.5 | 1.5-1.7 | 1.7-1.9 | 1.9-2.5 |
| Vitrinite reflectance distribution % | 4.0 | 6.0 | 41.9 | 32.9 | 8.2 | 5.8 | 1.1 |
Three-dimensional machinery mixed coal coal sample quality 300g.Testing coke oven coal capacity 200kg, the reactive CRI of gained coke is 28.9%, and post reaction strength CSR is 53.1%
In the commercial production of 7m coke oven, gained coke mean quality index in 10 days is as shown in table 3:
Table 3 commercial production gained coke mean quality index in 10 days
| M40% | M10% | A% | Vda%f | S% | CRI% | CSR% |
| 88.84 | 6.32 | 12.01 | 0.94 | 0.90 | 26.57 | 62.89 |
Embodiment 2:
Mixed coal ratio is as follows: 1/3 coking coal: 16%；Fertile one: 14%；Fertile two: 13%；Burnt 1#: 15%；Burnt 1#: 10%；Burnt two: 10%；Lean coal 1#: 9%；Lean coal 2#: 13%.
Theoretical coal blending vitrinite reflectance result: vitrinite average reflectance Re:1.226；Maximum reflectance of vitrinite Rmax:1.305；The standard deviation of vitrinite reflectance scattergram normal distribution: 0.272.In each interval, vitrinite reflectance is distributed in Table 4.
The theoretical mixed coal vitrinite reflectance distribution table of table 4
| Coal | Bottle coal | 1/3 coking coal | Rich coal | Coking coal | Thin coking coal | Lean coal | Meager coal |
| Vitrinite reflectance is interval | 0.65-0.8 | 0.8-0.9 | 0.9-1.2 | 1.2-1.5 | 1.5-1.7 | 1.7-1.9 | 1.9-2.5 |
| Vitrinite reflectance distribution % | 4.6 | 7.4 | 42.0 | 28.9 | 10.0 | 5.7 | 1.3 |
Three-dimensional machinery mixed coal coal sample quality 500g.Testing coke oven coal capacity 40kg, the reactive CRI of gained coke is 28.8%, and post reaction strength CSR is 53.6%.
In the commercial production of 7m coke oven, gained coke mean quality index in 10 days is as shown in table 5:
Table 5 commercial production gained coke mean quality index in 10 days
| M40% | M10% | A% | Vdaf% | S% | CRI% | CSR% |
| 88.62 | 6.48 | 11.91 | 0.90 | 0.77 | 26.97 | 63.13 |
Embodiment 3:
Mixed coal ratio is as follows: 1/3 coking coal: 18%；Fertile one: 14%；Fertile two: 13%；Burnt 1#: 15%；Burnt 1#: 10%；Burnt two: 12%；Lean coal 1#: 8%；Lean coal 2#: 10%.
Theoretical coal blending vitrinite reflectance result: vitrinite average reflectance Re:1.270；Maximum reflectance of vitrinite Rmax:1.32；The standard deviation of vitrinite reflectance scattergram normal distribution: 0.236.In each interval, vitrinite reflectance is distributed in Table 6.
The theoretical mixed coal vitrinite reflectance distribution table of table 6
| Coal | Bottle coal | 1/3 coking coal | Rich coal | Coking coal | Thin coking coal | Lean coal | Meager coal |
| Vitrinite reflectance is interval | 0.65-0.8 | 0.8-0.9 | 0.9-1.2 | 1.2-1.5 | 1.5-1.7 | 1.7-1.9 | 1.9-2.5 |
| Vitrinite reflectance distribution % | 0.4 | 3.7 | 43.1 | 34.7 | 13.9 | 3.0 | 1.2 |
Three-dimensional machinery mixed coal coal sample quality 200g.Testing coke oven coal capacity 300kg, the reactive CRI of gained coke is 24.5%, and post reaction strength CSR is 55.9%.
In the commercial production of 7m coke oven, gained coke mean quality index in 10 days is as shown in table 7:
Table 7 commercial production gained coke mean quality index in 10 days
| M40% | M10% | A% | Vdaf% | S% | CRI% | CSR% |
| 88.62 | 6.48 | 11.91 | 0.90 | 0.77 | 26.97 | 63.13 |
。
Claims (4)
1. the blending method based on rich coal, it is characterized in that, single grade coal is carried out coal petrography mensuration, and coal petrography measurement result is overlapped, the mixed coal vitrinite reflectance Butut after superposition is carried out indices discriminating, to determine whether for rationally effective Coal Blending Schemes, coking production is carried out by determined Coal Blending Schemes, gained coke quality is detected, according to coke hot index, Coal Blending Schemes is evaluated, to determine the reasonability of Coal Blending Schemes；Concrete grammar and step be:
(1), utilize coal petrography analyzing software system and polarizing microscope automatic measurement system, according to GB6948-2008 " coal vitrinite reflectance determination method ", coking is carried out the average maximum reflectivity of vitrinite with each single grade coalMeasure；
(2), in conjunction with traditional multiple trade mark coal Coal Blending Schemes, each trade mark coal blend ratio is proposed, and the above-mentioned each single grade coal reflectance map recorded is overlapped according to proportioning, if the vitrinite reflectance scattergram after superposition is normal distribution shape, smooth without recess, and it is defined as theoretical Coal Blending Schemes by this scheme after the standard deviation > 0.2 of normal distribution；
(3) in the distributed data, after vitrinite reflectance superposition, if the ratio that the average maximum reflectivity of the vitrinite of mixed coal is between 0.9～1.2 is more than the ratio between 1.2～1.5, using this scheme as preliminary Coal Blending Schemes；
(4) each single grade coal is adopted three-dimensional machinery mixed coal device to carry out mixed coal by the ratio, in preliminary Coal Blending Schemes determined, mixed coal sample dries 1h at 105 DEG C, makes mixed coal, then extracts 200～500g mixed coal coal sample, carries out testing coke oven test；
(5), the coke that testing coke oven produces is carried out heat-state intensity index detection by GB/T4000-2008, if hot strength reaches CRI≤30%, CSR >=60%, think that the coke quality produced according to this Coal Blending Schemes meets the prescription that large blast furnace is burnt, be defined as final Coal Blending Schemes by this scheme；If not up to intensity index, then return to step (2), re-start said process, until up to standard.
2. the blending method based on rich coal according to claim 1, it is characterised in that described single grade coal is bituminous coal, specifically includes: bottle coal, gas rich coal, 1/3 coking coal, rich coal, coking coal, thin coking coal, lean coal, meager lean coal, meager coal.
3. the blending method based on rich coal according to claim 1, it is characterised in that the described coking average maximum reflectivity of each single grade coal coal vitriniteThe scope of measurement result is between 0.5～2.5, and is 8 minizones by this interval subdivision, and coal corresponding to each minizone is:
Require that the average maximum reflectivity of vitrinite has at least a kind of single grade coal in each interval that 0.8～1.9 comprises.
4. the blending method based on rich coal according to claim 1, it is characterised in that each trade mark coal described in step (2) is bottle coal, 1/3 coking coal, fertilizer one, fertilizer two, Jiao Yi, Jiao two, thin coking coal, lean coal and meager coal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712216.0A CN105713632B (en) | 2014-12-01 | 2014-12-01 | Coal blending method mainly using fat coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410712216.0A CN105713632B (en) | 2014-12-01 | 2014-12-01 | Coal blending method mainly using fat coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105713632A true CN105713632A (en) | 2016-06-29 |
| CN105713632B CN105713632B (en) | 2020-02-18 |
Family
ID=56145692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410712216.0A Active CN105713632B (en) | 2014-12-01 | 2014-12-01 | Coal blending method mainly using fat coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105713632B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521965A (en) * | 2020-12-22 | 2021-03-19 | 鞍钢集团北京研究院有限公司 | Rapid coal blending method |
| CN115181580A (en) * | 2022-07-18 | 2022-10-14 | 河北中煤旭阳能源有限公司 | Method for producing tamping coke by fully using foreign coal blending |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113345A (en) * | 2006-07-28 | 2008-01-30 | 中宏（天津）实业有限公司 | Process for rubber waste utilization |
| CN101665709A (en) * | 2008-09-01 | 2010-03-10 | 鞍钢股份有限公司 | Coking coal classification method |
| CN101942315A (en) * | 2010-08-16 | 2011-01-12 | 中国神华能源股份有限公司 | High-proportion coal blending and coking method |
| CN102816577A (en) * | 2012-08-30 | 2012-12-12 | 武汉科技大学 | Coal-rock blending method suitable for tamping coking |
| KR101311017B1 (en) * | 2011-07-28 | 2013-10-14 | 현대제철 주식회사 | Coal blending method |
| CN103865554A (en) * | 2014-02-26 | 2014-06-18 | 南京钢铁股份有限公司 | Coal blending method for smelting coking coal by using high-volatile component on large scale |
-
2014
- 2014-12-01 CN CN201410712216.0A patent/CN105713632B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113345A (en) * | 2006-07-28 | 2008-01-30 | 中宏（天津）实业有限公司 | Process for rubber waste utilization |
| CN101665709A (en) * | 2008-09-01 | 2010-03-10 | 鞍钢股份有限公司 | Coking coal classification method |
| CN101942315A (en) * | 2010-08-16 | 2011-01-12 | 中国神华能源股份有限公司 | High-proportion coal blending and coking method |
| KR101311017B1 (en) * | 2011-07-28 | 2013-10-14 | 현대제철 주식회사 | Coal blending method |
| CN102816577A (en) * | 2012-08-30 | 2012-12-12 | 武汉科技大学 | Coal-rock blending method suitable for tamping coking |
| CN103865554A (en) * | 2014-02-26 | 2014-06-18 | 南京钢铁股份有限公司 | Coal blending method for smelting coking coal by using high-volatile component on large scale |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521965A (en) * | 2020-12-22 | 2021-03-19 | 鞍钢集团北京研究院有限公司 | Rapid coal blending method |
| CN115181580A (en) * | 2022-07-18 | 2022-10-14 | 河北中煤旭阳能源有限公司 | Method for producing tamping coke by fully using foreign coal blending |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105713632B (en) | 2020-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105062531B (en) | Coking raw material application is classified and Quality evaluation and its instructs blending method | |
| CN102816577B (en) | Coal-rock blending method suitable for tamping coking | |
| CN105316017A (en) | Coal rock coal blending method using vitrinite reflectance of coking coal as main index | |
| CN103940973B (en) | A kind of Coking Coal Quality method for quantitatively evaluating | |
| CN103275740A (en) | Evaluation method of fat coal quality | |
| CN104449778B (en) | A kind of method that integrated use coal petrography index carries out the exploitation of coal source | |
| CN104946286B (en) | Low volatile coking coal participates in coal-blending coking method | |
| CN103278610A (en) | Method for evaluating coal quality of coking coal having largest Gieseler fluidity of 2000ddpm or less | |
| CN103279678B (en) | The evaluation method of maximum Giseeler fluidity > 2000ddpm coking coal ature of coal | |
| CN102690670A (en) | Coal blending and coking method with participation of 1/3 coking coal having volatile of 28-32% | |
| CN101735840A (en) | Method for coking and mixing coal by participation of coking coal | |
| CN104330542A (en) | Coal quality evaluating method and distributing method of highly-metamorphic coking coal based on coke optical texture structure | |
| CN105713632A (en) | Coal blending method mainly using fat coal | |
| CN104655819B (en) | Predication method for heat reactivity of cokes | |
| CN110491454B (en) | Blast furnace smelting cost management method and system and computer-storable medium | |
| CN104804755B (en) | Coal blending method for coking 1/3 coking coal having solid softening temperature interval below 85 DEG C | |
| CN104109548B (en) | The coke making and coal blending method that fluidity >=1000ddpm bottle coal participates in | |
| CN104312607B (en) | High rotten coking coal participates in the blending method of coking | |
| CN104102821B (en) | The method for setting up bottle coal coal property evaluation model | |
| CN102492449B (en) | Coal blending method of fat coal with its volatile matter being not greater than 32% | |
| CN104830360B (en) | Coal blending coking method of 1/3 coking coal with 34% or above of volatile | |
| CN106221716A (en) | Gu the coke making and coal blending method that the coking coal of 70 DEG C≤softening temperature interval ＜ 80 DEG C participates in | |
| CN103995964B (en) | The method for setting up lean coal coal property evaluation model | |
| CN103901179B (en) | A kind of method evaluating coke Blending Efficiency of Blending and coke quality steady | |
| CN105062532B (en) | Coal blending method for controlling coke quality |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |