CN102925185A - Blended coal expansibility regulating method - Google Patents
Blended coal expansibility regulating method Download PDFInfo
- Publication number
- CN102925185A CN102925185A CN2012103896290A CN201210389629A CN102925185A CN 102925185 A CN102925185 A CN 102925185A CN 2012103896290 A CN2012103896290 A CN 2012103896290A CN 201210389629 A CN201210389629 A CN 201210389629A CN 102925185 A CN102925185 A CN 102925185A
- Authority
- CN
- China
- Prior art keywords
- coal
- coking
- mixed
- planting
- mixed coal
- 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
Landscapes
- Coke Industry (AREA)
Abstract
The invention discloses a blended coal expansibility regulating method. The method comprises the following steps of: selecting one or several coking coals with an Audibert-Arnu expansion index b more than 80% as blended coal expansibility regulating coals; selecting other single coking coals, determining the range of the ratio of other coking coals which influence the formation of the coke coarse grained mosaic texture of the blended coal and the blended coal fiber and flakey structure according to the type of blended coal expansibility regulating coals; regulating the ratio of blended coal expansibility regulating coals; regulating the Audibert-Arnu expansion index b of the blended coal to -5 to 15%; and finally determining the specific ratio of other single coking coals and regulating the rate of coke coarse grained mosaic texture of the blended coal to over 35% and the sum of the fiber and flakey structure less than 10%. The method can control the expandability of the blended coal reasonably, facilitate the reasonable use of coking coal resources, save high-quality coking coal and improve quality of coke.
Description
Technical field
The invention belongs to the coal-blending coking technical field, be specifically related to the expansile control method of a kind of mixed coal.
Background technology
General only the differentiation as gas-fat coal, rich coal of the swellability index of coking coal used, and as the auxiliary characteristics of distinguishing strong sticking coal, people are not high to its attention rate usually.But often find that in coking coal uses the impact of the swelling property Coke Quality of coking coal is larger, it is too high or too low that the coking coal ratio that some turgiditys are larger is added the improper turgidity of mixed coal that just can make a little, thereby cause coke quality deteriorated.There is no at present clear and definite mixed coal swelling property control method both at home and abroad, the swelling property of mixed coal and the impact of other performance index STRENGTH ON COKE thermal characteristics are also lacked enough understanding, all there is blindness in the selection that causes regulating the expansile coal of mixed coal and adapted amount thereof, not only cause the coal blending quality unstable, also cause easily adapted to cross at high proportion high-quality caking coal, increase coal blending cost.
Summary of the invention
Technical problem to be solved by this invention provides the expansile control method of a kind of mixed coal, the method can rationally determine to regulate the expansile coal of mixed coal and adapted ratio, the turgidity of mixed coal is adjusted to OK range, so that mixed coal has preferably expansion character, mixed coal coking gained coke quality is high, coke oven dry coke quenching CSR 〉=65% more than 6 meters.
For solving the problems of the technologies described above, the technical solution used in the present invention comprises the steps:
1) select to determine inferior turgidity b difficult to understand〉single one or more of planting in the coking coal of 80% regulate coal as the mixed coal swelling property;
2) select to determine other single coking coal of planting, and regulate the kind of coal according to described mixed coal swelling property, carry out respectively following 2.1), 2.2) step:
2.1) described mixed coal swelling property regulates single coking coal of planting that coal does not contain influential mixed coal coking coarse grain pattern structure, then determine to affect other single proportional range of planting coking coal of mixed coal coking coarse grain pattern structure, guarantee the coking coarse grain pattern structure of mixed coal 35%; Then, carry out step 2.3);
2.2) described mixed coal swelling property regulates single coking coal of planting that coal contains influential mixed coal coking coarse grain pattern structure, then determine to affect other single proportional range of planting coking coal of mixed coal coking coarse grain pattern structure, guarantee that the coking coarse grain pattern structure of mixed coal is 32 ~ 48%; Then, carry out step 2.3);
2.3) determine remaining other single proportional range of planting coking coal that affects mixed coal fiber and sheet structure, guarantee fiber and sheet structure sum＜10% of mixed coal;
3) regulate the kind of coal according to described mixed coal swelling property, carry out respectively following 3.1), 3.2) step:
3.1) described mixed coal swelling property regulates single coking coal of planting that coal does not contain influential mixed coal coking coarse grain pattern structure, then adjust described mixed coal swelling property and regulate the ratio of coal, mixed coal inferior turgidity b difficult to understand is adjusted between-5～15%, then determines described other single ratio of planting coking coal;
3.2) described mixed coal swelling property regulates single coking coal of planting that coal contains influential mixed coal coking coarse grain pattern structure, then adjust described mixed coal swelling property and regulate the ratio of coal, mixed coal inferior turgidity b difficult to understand is adjusted between-5～15%, then determine described other single ratio of planting coking coal, make the coking coarse grain pattern structure of mixed coal 35%.
Further, in the described step 1), mixed coal swelling property adjusting coal is one or both in rich coal and the gas-fat coal.
Further, described step 2.1), 2.2) in, described other single coking coal of planting that affects mixed coal coking coarse grain pattern structure comprises coking coal.Further, described other single coking coal of planting that affects mixed coal coking coarse grain pattern structure also comprises 1/3 coking coal.
Further, described step 2.3) in, the described single kind coking coal that affects mixed coal fiber and sheet structure is one or both in lean coal and the meager lean coal.
Further, described step 2) in, described other single coking coal of planting also comprises bottle coal.
The present invention is actual according to factory, at first determine mixed coal swelling property adjusting coal, by mixed coal coking coarse grain pattern structure and fiber and sheet structure index, tentatively determine to affect mixed coal coking coarse grain pattern structure and affect the mixed coal fiber and sheet structure other single adapted proportional range of planting coking coal afterwards, regulate difficult to understand inferior turgidity index that the coal ratio controls mixed coal so that mixed coal has preferably expansion character by adjusting the mixed coal swelling property again, determine at last other single concrete ratio of planting coking coal.Adopt the inventive method to carry out coal blending, because the mixed coal swelling property such as gas-fat coal, rich coal are regulated the turgidity of coal considerably beyond other single coking coal of planting, the mixed coal turgidity is not affected by other single kind coking coal change in the certain proportion scope substantially, can be in the situation that guarantees coarse grain pattern structure and fiber and sheet structure ratio, regulate the turgidity that coal is regulated mixed coal with the mixed coal swelling property, the swelling property of mixed coal is rationally controlled, be conducive to realize the reasonable utilization of coking coal resource, save high-quality caking coal, improve coke quality.Under the condition that does not adopt coal damping, shaped coal technology and precomminution technique, coke oven dry coke quenching CSR 〉=65% more than 6 meters.
Embodiment
Below in conjunction with embodiment the present invention is described in more detail.
Single coking coal of planting in the W factory has coking coal, 1/3 coking coal, lean coal (meager lean coal etc.), bottle coal, rich coal, gas-fat coal.Each single relevant performance perameter of planting coking coal sees Table 1, as can be seen from Table 1, coking coal and 1/3 coking coal are other the single coking coals of planting that affects mixed coal coking coarse grain pattern structure, coking coal, lean coal and meager lean coal are other the single coking coals of planting that affects mixed coal fiber and sheet structure, and rich coal is regulated coal for the mixed coal rheological that affects mixed coal coking coarse grain pattern structure.
Each single relevant performance perameter of planting coking coal of table 1
| Coal sample | Coking coarse grain pattern structure/% | (fiber+sheet) structure/% | Inferior turgidity b/% difficult to understand |
| Coking coal | 55 | 5 | 20 |
| 1/3 coking coal | 40 | 0 | 35 |
| Lean coal | 0 | 50 | Only shrink |
| Meager lean coal | 0 | 40 | Only shrink |
| Bottle coal | 0 | 0 | Only shrink |
| Rich coal | 35 | 0 | 180 |
| Gas-fat coal | 0 | 0 | 220 |
Embodiment 1
1) selects to determine that rich coal and gas-fat coal are as mixed coal swelling property adjusting coal;
2) select coking coal, 1/3 coking coal, lean coal as other single coking coal of planting, and:
2.1) determine: coking coal: 40 ~ 45%; 1/3 coking coal: 25 ~ 35%; The coking coarse grain pattern structure of guaranteeing mixed coal is 32 ~ 48%;
2.2) determine: lean coal :≤15%, with fiber and sheet structure sum＜10% of guaranteeing mixed coal;
3) adjusting swelling property adjusting coal is the ratio of rich coal and gas-fat coal, determines gas-fat coal: 5%, and rich coal: 10%, making mixed coal inferior turgidity b difficult to understand is 5%; Then determine: coking coal: 40%, 1/3 coking coal: 30%, lean coal: 15%, making the coking coarse grain pattern structure of mixed coal is 37.5%, fiber and sheet structure sum are 9.5%.
Under the condition that does not adopt coal damping, shaped coal technology and precomminution technique, the ratio that has the mixed coal swelling property adjusting coal of high-expansion energy by adjustment, realized the reasonable utilization of coking coal resource, the turgidity of mixed coal is rationally controlled, coke quality obtains stable raising, 6 meters coke oven dry coke quenching CSR:65.5%.
Embodiment 2
1) selects to determine that rich coal is as mixed coal swelling property adjusting coal;
2) select coking coal, 1/3 coking coal, lean coal as other single coking coals of planting, and:
2.1) determine: coking coal: 40 ~ 45%; 1/3 coking coal: 25 ~ 35%; The coking coarse grain pattern structure of guaranteeing mixed coal is 32 ~ 48%;
2.2) determine: lean coal :≤15%, with fiber and sheet structure sum＜10% of guaranteeing mixed coal;
3) adjusting swelling property adjusting coal is the ratio of rich coal, determines rich coal: 25%, and making mixed coal inferior turgidity b difficult to understand is 10%; Then determine: coking coal: 40%, 1/3 coking coal: 25%, lean coal: 10%, making mixed coal coking coarse grain pattern structure is 40.75%, fiber and sheet structure sum are 7%.
Under the condition that does not adopt coal damping, shaped coal technology and precomminution technique, the ratio that has the mixed coal swelling property adjusting coal of high-expansion energy by adjustment, realized the reasonable utilization of coking coal resource, the turgidity of mixed coal is rationally controlled, coke quality obtains stable raising, 6 meters coke oven dry coke quenching CSR:66%.
Embodiment 3
1) selects to determine that gas-fat coal is as mixed coal swelling property adjusting coal;
2) select coking coal, 1/3 coking coal and lean coal as other single coking coals of planting, and:
2.1) determine: coking coal: 40 ~ 50%; 1/3 coking coal: 25 ~ 35%; Guarantee the coking coarse grain pattern structure of mixed coal〉35%;
2.2) determine: lean coal :≤15%, with fiber and sheet structure sum＜10% of guaranteeing mixed coal;
3) adjusting swelling property adjusting coal is the ratio of gas-fat coal, determines gas-fat coal: 10%, and making mixed coal inferior turgidity b difficult to understand is 5%; Then determine: coking coal: 45%, 1/3 coking coal: 30%, bottle coal: 5%, lean coal: 10%, making mixed coal coking coarse grain pattern structure is 36.75%, fiber and sheet structure sum are 9.25%.
Under the condition that does not adopt coal damping, shaped coal technology and precomminution technique, the ratio that has the mixed coal swelling property adjusting coal of high-expansion energy by adjustment, realized the reasonable utilization of coking coal resource, the turgidity of mixed coal is rationally controlled, coke quality obtains stable raising, 6 meters coke oven dry coke quenching CSR:65.2%.
Embodiment 4
1) selects to determine that gas-fat coal is as mixed coal swelling property adjusting coal;
2) select coking coal, 1/3 coking coal, meager lean coal as other single coking coals of planting, and:
2.1) determine: coking coal: 40 ~ 50%; 1/3 coking coal: 25 ~ 35%; Guarantee the coking coarse grain pattern structure of mixed coal〉35%;
2.2) determine: meager lean coal :≤15%, with fiber and sheet structure sum＜10% of guaranteeing mixed coal;
3) adjusting swelling property adjusting coal is the ratio of gas-fat coal, determines gas-fat coal: 10%, and making mixed coal inferior turgidity b difficult to understand is 8%; Then determine: coking coal: 45%, 1/3 coking coal: 35%, meager lean coal: 10%, making mixed coal coking coarse grain pattern structure is 38.75%, fiber and sheet structure sum are 6.25%.
Under the condition that does not adopt coal damping, shaped coal technology and precomminution technique, the ratio that has the mixed coal swelling property adjusting coal of high-expansion energy by adjustment, realized the reasonable utilization of coking coal resource, the turgidity of mixed coal is rationally controlled, coke quality obtains stable raising, 6 meters coke oven dry coke quenching CSR:65.8%.
Embodiment 5
1) selects to determine that rich coal is as mixed coal swelling property adjusting coal;
2) select coking coal, 1/3 coking coal, bottle coal, lean coal as other single coking coals of planting, and:
2.1) determine: coking coal: 40 ~ 50%; 1/3 coking coal: 20 ~ 30%, guarantee that the coking coarse grain pattern structure of mixed coal is 32 ~ 48%;
2.2) determine: lean coal :≤15%, with fiber and sheet structure sum＜10% of guaranteeing mixed coal;
3) ratio of adjustment rich coal, determine rich coal: 18%, making mixed coal inferior turgidity b difficult to understand is 8%; Then determine: coking coal: 42%, 1/3 coking coal: 25%, lean coal: 10%, bottle coal 5%, making mixed coal coking coarse grain pattern structure is 39.4%, fiber and sheet structure sum are 7.1%.
Under the condition that does not adopt coal damping, shaped coal technology and precomminution technique, the ratio that has the mixed coal rheological adjusting coal of high workability energy by adjustment, realized the reasonable utilization of coking coal resource, the rheological of mixed coal is rationally controlled, coke quality obtains stable raising, 6 meters coke oven dry coke quenching CSR:66.0%.
Claims (8)
1. the expansile control method of mixed coal is characterized in that: comprise the steps:
1) select to determine inferior turgidity b difficult to understand〉single one or more of planting in the coking coal of 80% regulate coal as the mixed coal swelling property;
2) select to determine other single coking coal of planting, and regulate the kind of coal according to described mixed coal swelling property, carry out respectively following 2.1), 2.2) step:
2.1) described mixed coal swelling property regulates single coking coal of planting that coal does not contain influential mixed coal coking coarse grain pattern structure, then determine to affect other single proportional range of planting coking coal of mixed coal coking coarse grain pattern structure, guarantee the coking coarse grain pattern structure of mixed coal 35%; Then, carry out step 2.3);
2.2) described mixed coal swelling property regulates single coking coal of planting that coal contains influential mixed coal coking coarse grain pattern structure, then determine to affect other single proportional range of planting coking coal of mixed coal coking coarse grain pattern structure, guarantee that the coking coarse grain pattern structure of mixed coal is 32 ~ 48%; Then, carry out step 2.3);
2.3) determine remaining other single proportional range of planting coking coal that affects mixed coal fiber and sheet structure, guarantee fiber and sheet structure sum＜10% of mixed coal;
3) regulate the kind of coal according to described mixed coal swelling property, carry out respectively following 3.1), 3.2) step:
3.1) described mixed coal swelling property regulates single coking coal of planting that coal does not contain influential mixed coal coking coarse grain pattern structure, then adjust described mixed coal swelling property and regulate the ratio of coal, mixed coal inferior turgidity b difficult to understand is adjusted between-5～15%, then determines described other single ratio of planting coking coal;
3.2) described mixed coal swelling property regulates single coking coal of planting that coal contains influential mixed coal coking coarse grain pattern structure, then adjust described mixed coal swelling property and regulate the ratio of coal, mixed coal inferior turgidity b difficult to understand is adjusted between-5～15%, then determine described other single ratio of planting coking coal, make the coking coarse grain pattern structure of mixed coal 35%.
2. the expansile control method of mixed coal as claimed in claim 1 is characterized in that: in the described step 1), it is in rich coal and the gas-fat coal one or both that the mixed coal swelling property is regulated coal.
3. the expansile control method of mixed coal as claimed in claim 1 or 2 is characterized in that: described step 2.1), 2.2) in, described other single coking coal of planting that affects mixed coal coking coarse grain pattern structure comprises coking coal.
4. the expansile control method of mixed coal as claimed in claim 3 is characterized in that: described other single coking coal of planting that affects mixed coal coking coarse grain pattern structure also comprises 1/3 coking coal.
5. the expansile control method of mixed coal as claimed in claim 1 or 2 is characterized in that: described step 2.3), the described single coking coal of planting that affects mixed coal fiber and sheet structure is in lean coal and the meager lean coal one or both.
6. the expansile control method of mixed coal as claimed in claim 3 is characterized in that: described step 2.3), the described single coking coal of planting that affects mixed coal fiber and sheet structure is in lean coal and the meager lean coal one or both.
7. the expansile control method of mixed coal as claimed in claim 1 or 2 is characterized in that: described step 2), described other single coking coal of planting also comprises bottle coal.
8. the expansile control method of mixed coal as claimed in claim 3 is characterized in that: described step 2), described other single coking coal of planting also comprises bottle coal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210389629.0A CN102925185B (en) | 2012-10-15 | 2012-10-15 | Blended coal expansibility regulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210389629.0A CN102925185B (en) | 2012-10-15 | 2012-10-15 | Blended coal expansibility regulating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102925185A true CN102925185A (en) | 2013-02-13 |
| CN102925185B CN102925185B (en) | 2014-01-22 |
Family
ID=47640118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210389629.0A Active CN102925185B (en) | 2012-10-15 | 2012-10-15 | Blended coal expansibility regulating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102925185B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184058A (en) * | 2013-04-15 | 2013-07-03 | 武汉钢铁(集团)公司 | Coal coking and blending method beneficial to cold coke strength |
| CN104140836A (en) * | 2014-07-15 | 2014-11-12 | 武汉钢铁(集团)公司 | Coal blending and coking method with low-flow high-expansion low-shrinkage-degree coking coal involved |
| CN104140835A (en) * | 2014-07-15 | 2014-11-12 | 武汉钢铁(集团)公司 | Coal blending and coking method with high-expansion, low-shrinkage-degree and low-flow coking coal participating in |
| CN107216901A (en) * | 2017-07-14 | 2017-09-29 | 武汉钢铁有限公司 | The as-fired coal dilation control method of binder free typed briquette class |
| CN110713842A (en) * | 2019-09-19 | 2020-01-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Tamping coking resistance control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11302661A (en) * | 1998-04-17 | 1999-11-02 | Nippon Steel Corp | Method for compounding coal for coke making |
| CN101134900A (en) * | 2007-10-18 | 2008-03-05 | 山西太钢不锈钢股份有限公司 | Coke coal blending ratio and coking method thereof |
| CN101294948A (en) * | 2008-06-20 | 2008-10-29 | 武汉钢铁(集团)公司 | Method for anthracology coal blending |
| CN102010734A (en) * | 2010-12-10 | 2011-04-13 | 武汉钢铁(集团)公司 | Coal blending method for controlling coal as fired dilatation of large-scale coke oven with wide coking chamber |
| CN102492448A (en) * | 2011-12-12 | 2012-06-13 | 武汉钢铁(集团)公司 | Coal blending coking method capable of controlling quality of coking coal |
-
2012
- 2012-10-15 CN CN201210389629.0A patent/CN102925185B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11302661A (en) * | 1998-04-17 | 1999-11-02 | Nippon Steel Corp | Method for compounding coal for coke making |
| CN101134900A (en) * | 2007-10-18 | 2008-03-05 | 山西太钢不锈钢股份有限公司 | Coke coal blending ratio and coking method thereof |
| CN101294948A (en) * | 2008-06-20 | 2008-10-29 | 武汉钢铁(集团)公司 | Method for anthracology coal blending |
| CN102010734A (en) * | 2010-12-10 | 2011-04-13 | 武汉钢铁(集团)公司 | Coal blending method for controlling coal as fired dilatation of large-scale coke oven with wide coking chamber |
| CN102492448A (en) * | 2011-12-12 | 2012-06-13 | 武汉钢铁(集团)公司 | Coal blending coking method capable of controlling quality of coking coal |
Non-Patent Citations (3)
| Title |
|---|
| 张代林等: "《煤焦纤维结构特征与焦炭性质的关系》", 《钢铁》 * |
| 张雪红等: "《单种炼焦煤煤质的研究》", 《煤化工》 * |
| 项茹等: "《单种焦煤结焦性能及其混配性研究》", 《武汉科技大学学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184058A (en) * | 2013-04-15 | 2013-07-03 | 武汉钢铁(集团)公司 | Coal coking and blending method beneficial to cold coke strength |
| CN103184058B (en) * | 2013-04-15 | 2014-06-11 | 武汉钢铁(集团)公司 | Coal coking and blending method beneficial to cold coke strength |
| CN104140836A (en) * | 2014-07-15 | 2014-11-12 | 武汉钢铁(集团)公司 | Coal blending and coking method with low-flow high-expansion low-shrinkage-degree coking coal involved |
| CN104140835A (en) * | 2014-07-15 | 2014-11-12 | 武汉钢铁(集团)公司 | Coal blending and coking method with high-expansion, low-shrinkage-degree and low-flow coking coal participating in |
| CN104140836B (en) * | 2014-07-15 | 2016-01-20 | 武汉钢铁(集团)公司 | The coal-blending coking method that low flowing high expansion lower shrinkage degree coking coal participates in |
| CN104140835B (en) * | 2014-07-15 | 2016-03-30 | 武汉钢铁(集团)公司 | The coal-blending coking method that the low flowing coking coal of high expansion lower shrinkage degree participates in |
| CN107216901A (en) * | 2017-07-14 | 2017-09-29 | 武汉钢铁有限公司 | The as-fired coal dilation control method of binder free typed briquette class |
| CN107216901B (en) * | 2017-07-14 | 2019-08-27 | 武汉钢铁有限公司 | The as-fired coal dilation control method of binder free typed briquette class |
| CN110713842A (en) * | 2019-09-19 | 2020-01-21 | 攀钢集团攀枝花钢铁研究院有限公司 | Tamping coking resistance control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102925185B (en) | 2014-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102925185B (en) | Blended coal expansibility regulating method | |
| CN102604659B (en) | Coking coal blending method using high-expansion coking coal | |
| CN102816577B (en) | Coal-rock blending method suitable for tamping coking | |
| CN104030862B (en) | A kind of cattle manure charcoal preparation method suppressing nitrogenous fertilizer leaching loss | |
| CN102492448A (en) | Coal blending coking method capable of controlling quality of coking coal | |
| CN105112083A (en) | Method for high-volatile coking coal blending | |
| CN102604658A (en) | Coking coal blending method using weakly-caking coking coal | |
| CN103865554A (en) | Coal blending method for smelting coking coal by using high-volatile component on large scale | |
| CN101735840A (en) | Method for coking and mixing coal by participation of coking coal | |
| CN102618310B (en) | Coking and coal blending method with participation of gas coal | |
| CN105925294A (en) | Control method for coke particle size uniformity | |
| CN101658913A (en) | Variable water ratio control method of secondary cooling of billet caster | |
| CN102888236B (en) | Method for regulating rheological property of blend coal | |
| CN104130791B (en) | Improve the blending method of below 500mm width coking chamber coke oven coke quality | |
| CN104312607A (en) | Coal blending method of high-metamorphic coking coal for coking | |
| CN104845650B (en) | Control coke M10The coke making and coal blending method of index | |
| CN105713633B (en) | Coking coal blending method with participation of medium and high sulfur fertilizer coal | |
| CN104140835B (en) | The coal-blending coking method that the low flowing coking coal of high expansion lower shrinkage degree participates in | |
| CN104109548B (en) | The coke making and coal blending method that fluidity >=1000ddpm bottle coal participates in | |
| CN102827625B (en) | Method for high-volatile fat coal to participate in coking and blending coal | |
| CN110283607B (en) | Construction and application of coking system of coking coal | |
| CN105062532B (en) | Coal blending method for controlling coke quality | |
| CN109852411A (en) | A kind of coal blending for coke | |
| CN102492449B (en) | Coal blending method of fat coal with its volatile matter being not greater than 32% | |
| CN105255509B (en) | A kind of coke making and coal blending method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170712 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei Friendship Road, No. 999, Wuchang Patentee before: Wuhan Iron & Steel (Group) Corp. |