CN104830360A - Coal blending coking method of 1/3 coking coal with 34% or above of volatile - Google Patents
Coal blending coking method of 1/3 coking coal with 34% or above of volatile Download PDFInfo
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- CN104830360A CN104830360A CN201510245172.XA CN201510245172A CN104830360A CN 104830360 A CN104830360 A CN 104830360A CN 201510245172 A CN201510245172 A CN 201510245172A CN 104830360 A CN104830360 A CN 104830360A
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Abstract
The invention discloses a coal blending coking method of 1/3 coking coal with 34% or above of volatile. According to the coal blending scheme, the method comprises the following steps: 1) measuring Gieseler fluidity on 1/3 coking coal, selecting 1/3 coking coal with a solid-soft temperature range of lower than 70 DEG C, marking with type II 1/3 coking coal and selecting 1/3 coking coal with a solid-soft temperature range of lower than 85 DEG C and marking with other 1/3 coking coal; and 2) carrying out coal blending by using the type II 1/3 coking coal according to the following percentage by mass: 1-10% of gas-fat coal, 1-15% of fat coal, 5-10% of type II 1/3 coking coal, 10-20% of other 1/3 coking coal, 40-45% of coking coal and 10-15% of lean coal. According to the method, solid-soft temperature range in Gieseler fluidity indexes is used for optimizing and subdividing 1/3 coking coal, and then in cooperation with a proper coal blending structure, the aim of stabilizing the quality of coking coal is achieved.
Description
Technical field
The invention belongs to Coking Coal Blending Technology field, be specifically related to the coke making and coal blending method that a kind of volatilization is divided into 34% and 1/3 above coking coal.
Background technology
China's coal resource enriches, but coking coal resource is in short supply, and skewness weighs in limited coking coal resource.In the coal reserves verified, coking coal reserves only account for 26% of coal total reserves, and coking coal only accounts for 17.57% of coking coal reserves, and rich coal accounts for 10%.And in coal-blending coking, burnt rich coal generally should account for 50%-60%, between coking coal resource and the demand of coke making and coal blending, contradiction is serious.
In order to reduce the usage quantity of burnt rich coal as far as possible, reduce production cost and improve coke quality, coking worker in various countries' starts to pay attention in the applied research to non-coking coal gradually.And 1/3 coking coal is as the higher coal of content in China coal resource deposit, how makes making good use of 1/3 coking coal and especially there is realistic meaning for China's coking industry.1/3 coking coal is as the coal of a kind of metamorphic grade between coking coal and rich coal, its complexity is much more complicated than burnt rich coal, and the use of China to 1/3 coking coal depends on vitrinite reflectance and the distribution thereof of traditional coal index and coal petrography index, all there is certain defect in the combined index of these two kinds of indexs and these two kinds of indexs, reasonable employment can not be accomplished to 1/3 coking coal all sidedly because the close 1/3 coking coal quality of some coal index, coal petrography index also may difference larger.
Summary of the invention
Technical problem to be solved by this invention is to provide the coke making and coal blending method that a kind of volatilization is divided into 34% and 1/3 above coking coal, to solve the inclined bottle coal of Quality of Part Coal in this 1/3 coking coal, according to generally using G at present, Y value measuring method effectively cannot be distinguished utilization, thus cause coal quality fluctuation to cause the problem of coke quality fluctuation.
For solving the problems of the technologies described above, Gu the present invention utilizes the Giseeler fluidity index of coal---softening temperature interval (coking coal softens the temperature range being molten to solidification from plastic mass) is segmented 1/3 coking coal, to solid softening temperature interval for 1/3 coking coal being less than 70 DEG C is optimized adapted, thus reach the object of stable coke quality.Concrete Coal Blending Schemes of the present invention is:
1) carry out Giseeler fluidity mensuration to 1/3 coking coal, 1/3 coking coal choosing wherein the interval < 70 DEG C of softening temperature is admittedly designated as II class 1/3 coking coal, Gu 1/3 coking coal of the interval ﹥ 85 DEG C of softening temperature is designated as other 1/3 coking coal.
2) II class 1/3 coking coal is carried out coal blending by following mass percent:
Gas-fat coal: 1 ~ 10%, rich coal: 1 ~ 15%, II class 1/3 coking coal: 5 ~ 10%, other 1/3 coking coal: 10 ~ 20%, coking coal: 40 ~ 45%, lean coal: 10 ~ 15%.
Further, described step 2) in, by mass percent, gas-fat coal: 5 ~ 10%, rich coal: 5 ~ 10%, other 1/3 coking coal: 15 ~ 20%.
The present inventor finds through research, volatilization is divided into the inclined bottle coal of Quality of Part Coal in 34% and 1/3 above coking coal, further research finds, the solid softening temperature of this part 1/3 coking coal is interval below 85 DEG C, further study discovery, in 1/3 coking coal of the inclined bottle coal of this Quality of Part Coal, Gu 1/3 coking coal that softening temperature interval is 70 ~ 85 DEG C differs larger with the 1/3 coking coal character that solid softening temperature interval is less than 70 DEG C, accordingly, the present invention adopts the solid softening temperature interval in Giseeler fluidity index to be optimized segmentation to 1/3 coking coal, and be aided with the Blending adapted, serve the object of stable coke quality.
Embodiment
Below in conjunction with embodiment, the present invention is further detailed explanation.
Coke making and coal blending method of the present invention carries out according to the following steps:
(1) two kind of 1/3 coking coal is got, called after 1/3 coking coal 1#, 1/3 coking coal 2# respectively, G, Y value, volatile matter and Giseeler fluidity index determining are carried out to it, and according to Giseeler fluidity index determining data, the solid softening temperature obtaining two kind of 1/3 coking coal is interval, and each achievement data recorded is beneficial to table 1:
The index of correlation data of table 1 two kind of 1/3 coking coal
| Title | G | Y/mm | V daf/％ | Gu softening temperature is interval/DEG C |
| 1/3 coking coal 1 # | 80 | 14 | 37.19 | 81 |
| 1/3 coking coal 2 # | 79 | 14 | 35.62 | 63 |
From 1 table, G conveniently, Y value analytical procedure, this two kind of 1/3 coking coal G, Y value and volatile matter are close, and quality should be identical, can carry out adapted by coal class of the same race, but find that there is obvious difference in the solid softening temperature interval of these two kinds of coals by Giseeler fluidity mensuration.
(2) this two kind of 1/3 coking coal is all carried out coal-blending coking according within the scope of blending ratio described in scheme 1 ~ 6, other coal ore deposit point, identical in quality, concrete Coal Blending Schemes is in table 2:
The Coal Blending Schemes of table 2 two kind of 1/3 coking coal
| Scheme | Gas-fat coal/% | Rich coal/% | Subjects/% | Other 1/3 coking coal/% | Coking coal/% | Lean coal/% |
| 1 | 5 | 15 | 5 (1/3 coking coal 1#) | 20 | 40 | 15 |
| 2 | 5 | 15 | 5 (1/3 coking coal 2#) | 20 | 40 | 15 |
| 3 | 5 | 10 | 10 (1/3 coking coal 1#) | 20 | 40 | 15 |
| 4 | 5 | 10 | 10 (1/3 coking coal 2#) | 20 | 40 | 15 |
| 5 | 5 | 10 | 15 (1/3 coking coal 1#) | 15 | 40 | 15 |
| 6 | 5 | 10 | 15 (1/3 coking coal 2#) | 15 | 40 | 15 |
(3) heat property test analysis is carried out to the coke of above-mentioned 6 Coal Blending Schemes gained, the results are shown in Table 3.
The Thermal Properties of Coke value of the different Coal Blending Schemes gained of table 3
| Scheme | CRI/％ | CSR/％ |
| 1 | 19.68 | 69.56 |
| 2 | 19.29 | 68.17 |
| 3 | 19.57 | 68.23 |
| 4 | 20.89 | 67.54 |
| 5 | 21.52 | 67.42 |
| 6 | 22.53 | 62.78 |
[0023]from the Thermal Properties of Coke data of table 3, when subjects proportioning is 5%, 10%, the CSR numerical value difference that two kind of 1/3 coking coal allocates rear coke into is less, all in more excellent level; And when test 15% is reached to object proportioning time, the data variance of 1/3 coking coal 1# and the first two proportioning is less, and 1/3 coking coal 2# allocate into after the deteriorated amplitude of coke CSR obvious.
Through test detailed further, when solid softening temperature interval is 70 ~ 85 DEG C, volatile matter 34% and 1/3 above Blending of Coking Coals within 11% time, under identical Coal Blending Schemes, it is less than 70 DEG C with solid softening temperature interval, volatile matter 34% and 1/3 above coke quality fluctuation that coking coal refines not obvious, and all quality better (so-called identical Coal Blending Schemes, refer to that other single grade coal coals are identical, corresponding mass percent is identical, different is only have solid softening temperature interval to be 70 ~ 85 DEG C in a kind of Coal Blending Schemes, volatile matter is 34% and 1/3 above coking coal, solid softening temperature interval is had to be less than 70 DEG C in another kind of Coal Blending Schemes, volatile matter 34% and 1/3 above coking coal), during more than 11%, Gu softening temperature interval be 70 ~ 85 DEG C, volatile matter 34% and 1/3 above coking coal and solid softening temperature interval be less than 70 DEG C, volatile matter 34% and 1/3 above coking coal institute coking charcoal otherness clearly.
If carry out coal blending by original coal analysis method, Gu softening temperature interval is 70 ~ 85 DEG C, volatile matter is less than 70 DEG C at 34% and 1/3 above coking coal and solid softening temperature interval, volatile matter divides a class coal at 34% and 1/3 above coking coal and use, but obviously, above-mentioned 1/3 different coking coal is used to carry out coal blending, by the quality of remarkably influenced coke, particularly when proportioning is more than 10%, then there will be the poor two kinds of distinct coking effects of the better a kind of coke quality of a kind of coke quality.
Therefore by being distinguished this kind of 1/3 coking coal by solid softening temperature interval described in the inventive method, and require to carry out the Reasonable effect can playing stable coke quality to interval 1/3 coking coal being less than 70 DEG C of solid softening temperature according to described blending ratio.
Claims (2)
1. volatilization is divided into a coke making and coal blending method for 34% and 1/3 above coking coal, it is characterized in that: the Coal Blending Schemes of the method is:
1) carry out Giseeler fluidity mensuration to 1/3 coking coal, 1/3 coking coal choosing wherein the interval < 70 DEG C of softening temperature is admittedly designated as II class 1/3 coking coal, Gu 1/3 coking coal of the interval ﹥ 85 DEG C of softening temperature is designated as other 1/3 coking coal.
2) II class 1/3 coking coal is carried out coal blending by following mass percent:
Gas-fat coal: 1 ~ 10%, rich coal: 1 ~ 15%, II class 1/3 coking coal: 5 ~ 10%, other 1/3 coking coal: 10 ~ 20%, coking coal: 40 ~ 45%, lean coal: 10 ~ 15%.
2. volatilization according to claim 1 is divided into the coke making and coal blending method of 34% and 1/3 above coking coal, it is characterized in that: described step 2) in, by mass percent, gas-fat coal: 5 ~ 10%, rich coal: 5 ~ 10%, other 1/3 coking coal: 15 ~ 20%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106221716A (en) * | 2016-08-22 | 2016-12-14 | 武汉钢铁股份有限公司 | Gu the coke making and coal blending method that the coking coal of 70 DEG C≤softening temperature interval ＜ 80 DEG C participates in |
| CN106244181A (en) * | 2016-08-22 | 2016-12-21 | 武汉钢铁股份有限公司 | Gu the coke making and coal blending method that the coking coal of softening temperature interval ＜ 70 DEG C participates in |
| CN106318423A (en) * | 2016-08-22 | 2017-01-11 | 武汉钢铁股份有限公司 | Coking and coal blending method with solid-soft temperature interval more than or equal to 80 DEG C and coking coal participated in |
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| CN101081989A (en) * | 2007-06-29 | 2007-12-05 | 武汉钢铁(集团)公司 | Coal coking blending method |
| CN102492449A (en) * | 2011-12-19 | 2012-06-13 | 武汉钢铁(集团)公司 | Coal blending method of fat coal with its volatile matter being not greater than 32% |
| CN104140833A (en) * | 2014-07-11 | 2014-11-12 | 武汉钢铁(集团)公司 | Coal-blending and coke-making method involved with low G value 1/3 coking coal |
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| CN101081989A (en) * | 2007-06-29 | 2007-12-05 | 武汉钢铁(集团)公司 | Coal coking blending method |
| CN102492449A (en) * | 2011-12-19 | 2012-06-13 | 武汉钢铁(集团)公司 | Coal blending method of fat coal with its volatile matter being not greater than 32% |
| CN104140833A (en) * | 2014-07-11 | 2014-11-12 | 武汉钢铁(集团)公司 | Coal-blending and coke-making method involved with low G value 1/3 coking coal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106221716A (en) * | 2016-08-22 | 2016-12-14 | 武汉钢铁股份有限公司 | Gu the coke making and coal blending method that the coking coal of 70 DEG C≤softening temperature interval ＜ 80 DEG C participates in |
| CN106244181A (en) * | 2016-08-22 | 2016-12-21 | 武汉钢铁股份有限公司 | Gu the coke making and coal blending method that the coking coal of softening temperature interval ＜ 70 DEG C participates in |
| CN106318423A (en) * | 2016-08-22 | 2017-01-11 | 武汉钢铁股份有限公司 | Coking and coal blending method with solid-soft temperature interval more than or equal to 80 DEG C and coking coal participated in |
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Effective date of registration: 20170731 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 Wuchang, Hubei Friendship Road, No. A, block, floor 999, 15 Patentee before: Wuhan Iron & Steel (Group) Corp. |
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