CN111621314B - Tamping coal blending coking method - Google Patents
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Abstract
The invention provides a tamping coal blending coking method which is characterized in that no fat coal is blended, the method comprises the step of blending various single coking coals, and the single coking coals and the weight percentages thereof are as follows: weak caking coal 5-10 wt%, gas coal 0-15 wt%, 1/3 coking coal 20-30 wt%, gas fat coal 8-10 wt%, coking coal 25-35 wt%, lean coal 10-15 wt% and lean reducing coal 5-10 wt%. The method of the invention can realize the following technical effects: while the quality of the coke is ensured, the consumption of fat coal resources is reduced and slowed down, the coal blending cost is reduced, and the coke profit is improved.
Description
Technical Field
The invention belongs to the technical field of coking in the coking industry, and particularly relates to a tamping coal blending coking method.
Background
Most of the existing common coal blending coking adopt coking coal, fat coal, gas coal, lean coal and the like, wherein the coking coal and the fat coal are indispensable as skeleton coal types.
However, the coal resources in China are not rich in the types of coal suitable for coking, particularly the reserves of high-quality coking coal such as coking coal, fat coal and the like are less, and the regional distribution of the resources is extremely unbalanced; while the weakly caking coal, the gas coal and the 1/3 coking coal have relatively rich resources. The coke quality requirement is higher and higher along with the large-scale blast furnace, and the proportion of coking coal, fat coal and the like in the coal blending structure is continuously improved in order to improve the coke strength. In addition, the coke oven is also required to increase the proportion of strongly caking coal in the coal blending in the development of large-sized and wide coking chambers. It is understood that the proportion of the coking coal added with the fat coal in the coal blending structures of the tamping coke ovens of 5.5m and 6.25m still reaches 40 to 50 percent, wherein the proportion of the fat coal is 15 to 25 percent. Therefore, the resources such as fat coal and the like in China are less and less, and are in shortage. Therefore, the development and expansion of other weak caking coal are urgently needed, on one hand, the resource consumption of fat coal and the like is reduced and slowed down, and the requirement of long-term development is met; on one hand, the coal blending cost is reduced, and the coke profit is improved.
Disclosure of Invention
The invention aims to provide a tamping coal blending coking method, which does not blend fat coal and increases the proportion of gas coal, gas fat coal and 1/3 coking coal while ensuring the quality of coke, thereby reducing the production cost and reasonably utilizing the coal resources.
The invention provides a tamping coal blending coking method which is characterized in that no fat coal is blended, the method comprises the step of blending various single coking coals, and the single coking coals and the weight percentages thereof are as follows: weakly caking coal 5-10%, gas coal 5-15%, 1/3 coking coal 20-30%, gas fat coal 8-10%, coking coal 25-35%, lean coal 10-15%, lean reducing coal 5-10%,
wherein, V of the gas fat coaldafNo more than 38%, maximum Gieseler fluidity no less than 20000ddpm, plasticity interval≥100℃；
V of the 1/3 coking coaldafNot more than 35 percent, the Gibber maximum fluidity is not less than 2000ddpm, and the plasticity interval is not less than 75 ℃;
v of the coking coaldafNot more than 25 percent, the Gibber maximum fluidity is not less than 400ddpm, and the plasticity interval is not less than 70 ℃; the CSR of the single coking coke of a 40kg small coke oven is more than or equal to 65 percent or the CSR of the single coking coke of an iron box experiment is more than or equal to 70 percent;
g of the lean coal is more than or equal to 50 percent, and CSR of the single coking coke of a 40kg small coke oven is more than or equal to 25 percent or CSR of the single coking coke of an iron box experiment is more than or equal to 30 percent;
the lean coal G is more than or equal to 15.
In a specific embodiment, the individual coking coals and their weight percentages are as follows: 6-8% of weakly caking coal, 10-13% of gas coal, 20-23% of 1/3 coking coal, 8-10% of gas-fat coal, 25-32% of coking coal, 10-12% of lean coal and 7-9% of lean reducing coal.
In specific embodiments, the gas-fat coal can be gas-fat coal with a sulfur content of more than 1.5%; preferably, gas-fat coal having a sulfur content of more than 2% can be used. The inventor researches for a long time to find that the higher the sulfur content is, the stronger the caking property is; and the high-sulfur gas-fat coal has low price and low sulfur conversion rate (the residual sulfur content in the coke is low, and most of the sulfur is converted into the coal gas), can ensure that the sulfur content of the coke reaches the standard and is applied in a large proportion, and effectively reduces the coal blending price.
In a specific embodiment, the quality indexes of the blended coal in the method are as follows: the water content is less than or equal to 12 percent, the ash content is less than or equal to 10 percent, the sulfur content is less than or equal to 0.80 percent, the volatile matter is 26-30 percent, the bonding index G is more than or equal to 68, and the maximum thickness Y of the colloidal layer is more than or equal to 12.5 mm; the proportion of 0.8-1.5% in the distribution of the random reflectance Re of the coal petrography vitrinite is more than or equal to 50%, wherein the proportion of 1.2-1.5% is more than or equal to 25%, and the reflectance distribution curve is continuous without obvious gaps.
In a specific embodiment, before the mixing step, the weakly caking coal and the gas coal are respectively pre-crushed, and the fineness (less than 3mm) after pre-crushing is 85 wt% -90 wt%; the total fineness (less than 3mm) of the coal as fired is 89-92 wt%, and the bulk density is more than or equal to 1.0t/m3。
In a specific embodiment, according to the aboveThe blended coal obtained by the method is coked on a tamping coke oven with the diameter of more than 5.5m, and the obtained dry quenching coke reaches the following quality indexes: crushing strength M25Not less than 92 percent and abrasion resistance M10Less than or equal to 6 percent, the reactivity CRI less than or equal to 28 percent and the strength CSR after reaction more than or equal to 62 percent.
On the other hand, the invention provides blended coal for coking, wherein the blended coal comprises the following single coking coals in percentage by weight: weakly caking coal 5-10%, gas coal 5-15%, 1/3 coking coal 20-30%, gas fat coal 8-10%, coking coal 25-35%, lean coal 10-15%, lean reducing coal 5-10%,
wherein, V of the gas fat coaldafThe percentage of the flow is less than or equal to 38 percent, the maximum Gieseler fluidity is more than or equal to 20000ddpm, and the plasticity interval is more than or equal to 100 ℃;
v of the 1/3 coking coaldafNot more than 35 percent, the Gibber maximum fluidity is not less than 2000ddpm, and the plasticity interval is not less than 75 ℃;
v of the coking coaldafThe percentage of the carbon dioxide is less than or equal to 25 percent, the Gibber maximum flow degree is more than or equal to 400ddpm, the plasticity interval is more than or equal to 70 ℃, the CSR of the single coking coke of a 40kg small coke oven is more than or equal to 65 percent or the CSR of the single coking coke of an iron box experiment is more than or equal to 70 percent;
g of the lean coal is more than or equal to 50 percent, and CSR of the single coking coke of a 40kg small coke oven is more than or equal to 25 percent or CSR of the single coking coke of an iron box experiment is more than or equal to 30 percent;
the lean coal G is more than or equal to 15,
wherein the blended coal does not contain fat coal.
In a specific embodiment, the individual coking coals and their weight percentages are as follows: 6-8% of weakly caking coal, 10-13% of gas coal, 20-23% of 1/3 coking coal, 8-10% of gas-fat coal, 25-32% of coking coal, 10-12% of lean coal and 7-9% of lean reducing coal.
Advantageous effects
According to the tamping blending coal coking method without blending fat coal, coking coal is used as skeleton coal, 1/3 coking coal and gas fat coal with good fluidity and plasticity intervals are used for replacing fat coal, so that the melting continuity, the full connection and the coking uniformity of various coal types in the coking process are ensured, and the problem of insufficient caking property of the blended coal caused by the blending of fat coal is avoided; the quality and quantity of the active component are ensured by ensuring the proportion of the strongly-bonded area and the bonding area in the distribution of the vitrinite random reflectivity Re.
The excellent technical effects of the invention are as follows: the coal blending is not used for blending fertilizer coal, and is 15 to 25 percent lower than the common coal blending structure. On one hand, the method can reduce and slow down the consumption of fat coal resources and is suitable for the requirement of long-term development; on the other hand, the coal blending cost is reduced, and the coke profit is improved. The price difference between the fat coal and other coal types is about 200 yuan/ton, and the price of coal blending per ton can be reduced by 30-50 yuan. Meanwhile, the coke quality is ensured, and the dry quenching reaches the following quality indexes: crushing strength M25Not less than 92 percent and abrasion resistance M10The quality index reaches the quality level of dry quenching obtained by a tamping coal blending coking method for blending coking coal and fat coal in the prior art, the reactivity CRI is less than or equal to 6 percent, and the strength CSR after reaction is more than or equal to 62 percent.
Drawings
FIG. 1 is a diagram showing the distribution of vitrinite reflectance and the interval ratio of the blended coal in example 1 of the present invention.
FIG. 2 is a diagram showing the distribution of vitrinite reflectance and the interval ratio of the blended coal in example 2 of the present invention.
Detailed Description
The above description is only an outline of the technical solution of the present invention, and in order to make the technical content of the present invention more clear to those skilled in the art, the following specific embodiments of the present invention are specifically illustrated, however, these embodiments are not intended to limit the scope of the present invention. The operations not described in detail below are conventional in the art.
The quality index of each individual coking coal used in examples 1 and 2 below is shown in table 1 below.
TABLE 1
Example 1
The embodiment provides a tamping coal blending coking method, which comprises the step of blending various single coking coals, wherein the single coking coals comprise the following components in percentage by weight: 6% of weakly caking coal, 13% of gas coal, 20% of 1/3 coking coal, 10% of gas-fat coal, 118% of coking coal, 214% of coking coal, 10% of lean coal and 9% of lean reducing coal.
Pre-crushing weakly caking coal and gas coal respectively, wherein the fineness (less than 3mm) after pre-crushing is 88.5 wt% and 88.7 wt%; then the single coals are mixed and mixed evenly according to the proportion, and then the mixture is put into a crusher together to ensure that the fineness (less than 3mm) of the coal as fired is 90.1wt percent and the bulk density is 1.06t/m3。
The following table 2 shows the blended coal quality index data of example 1, which meets the requirements.
TABLE 2
| Ad/％ | Vdaf/％ | St，d/％ | G value | Y value/mm | |
| Standard of merit | ≤10 | 26-30 | ≤0.80 | ≥68 | ≥12.5 |
| Blended coal | 9.25 | 27.8 | 0.78 | 70.9 | 13.2 |
Table 3 below shows the distribution data of the vitrinite random reflectance Re of the coal of example 1, in which 58.6% of 0.8 to 1.5% and 19.7% of 0.9 to 1.2% are contained in the Re distribution of example 1. FIG. 1 shows that the reflectance profile is continuous with no significant gaps.
TABLE 3
The coke dry quenching quality index obtained by coking the blended coal of example 1 on a 5.5 stamp-charging coke oven is shown in Table 4 below.
TABLE 4
| Ad/％ | St，d/％ | M25/％ | M10/％ | CRI/％ | CSR/％ |
| 12.32 | 0.68 | 94.7 | 5.2 | 27.8 | 64.1 |
From the above table 4, it can be seen that the dry quenching coke obtained by the tamping coal blending coking method reaches the following quality indexes: crushing strength M25Not less than 92 percent and abrasion resistance M10Less than or equal to 6 percent, the reactivity CRI less than or equal to 28 percent and the strength CSR after reaction more than or equal to 62 percent.
Example 2
The embodiment provides a tamping coal blending coking method, which comprises the step of blending various single coking coals, wherein the single coking coals comprise the following components in percentage by weight: 8% of weakly caking coal, 10% of gas coal, 23% of 1/3 coking coal, 10% of gas-fat coal, 118% of coking coal, 212% of coking coal, 12% of lean coal and 7% of lean reducing coal.
Pre-crushing weakly caking coal and gas coal respectively, wherein the fineness (less than 3mm) after pre-crushing is 88.9 wt% and 89.5%; then the single coals are mixed and mixed evenly according to the proportion, and then the mixture is fed into a pulverizer together to ensure that the fineness (less than 3mm) of the coal as fired is 90.4wt percent and the bulk density is 1.01t/m3。
The following table 5 shows the blended coal quality index data of example 2, which meets the requirements.
TABLE 5
| Ad/％ | Vdaf/％ | St，d/％ | G value | Y value/mm | |
| Standard of merit | ≤10 | 26-30 | ≤0.80 | ≥68 | ≥12.5 |
| Blended coal | 9.12 | 28.0 | 0.78 | 70.2 | 13.3 |
The following table 6 shows the distribution data of the vitrinite random reflectance Re of the coal of example 2, the proportion of 0.8-1.5% in the Re distribution of example 2 is 57.7%, the proportion of 0.9-1.2% is 20.8%, and fig. 2 shows that the reflectance distribution curve is continuous without obvious gaps.
TABLE 6
| Re | <0.50 | 0.5-0.65 | 0.65-0.80 | 0.80-0.90 | 0.90-1.20 | 1.20-1.50 | 1.50-1.70 | 1.70-1.90 | 1.90-2.50 |
| ％ | 0.4 | 3.8 | 10.1 | 9.6 | 20.8 | 27.3 | 15.6 | 10.1 | 2.3 |
The coke dry quenching quality index obtained by coking the blended coal of example 2 on a 5.5m stamp-charging coke oven is shown in Table 7 below.
TABLE 7
| Ad/％ | St，d/％ | M25/％ | M10/％ | CRI/％ | CSR/％ |
| 12.28 | 0.69 | 93.5 | 5.5 | 27.3 | 63.8 |
From the above table 7, it can be seen that the dry quenching coke obtained by the above tamping coal blending coking method achieves the following quality indexes: crushing strength M25Not less than 92 percent and abrasion resistance M10Less than or equal to 6 percent, the reactivity CRI less than or equal to 28 percent and the strength CSR after reaction more than or equal to 62 percent.
From the results of the above examples 1 and 2, it can be seen that the tamping coal blending coking method of the present invention, under the condition of not blending fat coal, the blended coal and the obtained dry quenching quality index both meet the quality requirements, thereby realizing the technical effects of reducing the coal blending cost and improving the coke profit on the premise of ensuring the coke quality.
Claims (5)
1. A tamping coal blending coking method is characterized in that no fat coal is blended, the method comprises the step of blending various single coking coals, and the single coking coals and the weight percentages thereof are as follows: weakly caking coal 5-10%, gas coal 5-15%, 1/3 coking coal 20-30%, gas fat coal 8-10%, coking coal 25-35%, lean coal 10-15%, lean reducing coal 5-10%,
wherein, V of the gas fat coaldafLess than or equal to 38 percent, the Gieseler maximum fluidity is more than or equal to 20000ddpm,the plastic interval is more than or equal to 100 ℃;
v of the 1/3 coking coaldafNot more than 35 percent, the Gibber maximum fluidity is not less than 2000ddpm, and the plasticity interval is not less than 75 ℃;
v of the coking coaldafThe percentage of the carbon dioxide is less than or equal to 25 percent, the Gibber maximum flow degree is more than or equal to 400ddpm, the plasticity interval is more than or equal to 70 ℃, the CSR of the single coking coke of a 40kg small coke oven is more than or equal to 65 percent or the CSR of the single coking coke of an iron box experiment is more than or equal to 70 percent;
g of the lean coal is more than or equal to 50 percent, and CSR of the single coking coke of a 40kg small coke oven is more than or equal to 25 percent or CSR of the single coking coke of an iron box experiment is more than or equal to 30 percent;
the lean coal G is more than or equal to 15,
wherein, before the mixing step, the weakly caking coal and the gas coal are respectively pre-crushed, and the fineness of less than 3mm after pre-crushing is 85 wt% -90 wt%; the fineness of the total coal as fired which is less than 3mm is 89-92 wt%, and the bulk density is more than or equal to 1.0t/m3，
Wherein the quality indexes of the blended coal obtained by the method are as follows: the water content is less than or equal to 12 percent, the ash content is less than or equal to 10 percent, the sulfur content is less than or equal to 0.80 percent, the volatile matter is 26-30 percent, the bonding index G is more than or equal to 68, and the maximum thickness Y of the colloidal layer is more than or equal to 12.5 mm; the proportion of 0.8-1.5% in the distribution of the random reflectance Re of the coal petrography vitrinite is more than or equal to 50%, wherein the proportion of 1.2-1.5% is more than or equal to 25%, and the reflectance distribution curve is continuous without gaps, and
the blended coal obtained by the method is coked on a tamping coke oven with the diameter of more than 5.5m, and the obtained dry quenching coke reaches the following quality indexes: crushing strength M25Not less than 92 percent and abrasion resistance M10Less than or equal to 6 percent, the reactivity CRI less than or equal to 28 percent and the strength CSR after reaction more than or equal to 62 percent.
2. The method of claim 1, wherein the individual coking coals and their weight percentages are as follows: 6-8% of weakly caking coal, 10-13% of gas coal, 20-23% of 1/3 coking coal, 8-10% of gas-fat coal, 25-32% of coking coal, 10-12% of lean coal and 7-9% of lean reducing coal.
3. The method of claim 1, wherein the gas-fat coal is gas-fat coal having a sulfur content of more than 1.5%.
4. The method according to claim 1, wherein the gas-fat coal is gas-fat coal having a sulfur content of more than 2%.
5. A blended coal for coking prepared by the method of any one of claims 1 to 4.
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| CN113088310B (en) * | 2021-05-25 | 2022-09-27 | 山东洪达化工有限公司 | Tamping coal blending coking method, product thereof and blended coal for coking |
| CN113604238B (en) * | 2021-09-10 | 2022-04-22 | 河北中煤旭阳能源有限公司 | Coking method for improving tamping coke lumpiness and tamping coke prepared by method |
| CN113755191B (en) * | 2021-09-29 | 2022-06-24 | 河北中煤旭阳能源有限公司 | Coke containing domestic garbage incineration ash and preparation method thereof |
| CN114544907B (en) * | 2022-01-14 | 2023-07-18 | 淮北矿业股份有限公司 | Mixed coking coal identification evaluation method based on Kirschner fluidity characteristic index |
| CN114507536B (en) * | 2022-03-28 | 2022-11-29 | 武汉钢铁有限公司 | Coal blending method for improving crushing strength of coke |
| CN114921259B (en) * | 2022-05-18 | 2023-03-14 | 山西太钢不锈钢股份有限公司 | Method for improving crushing strength of coke |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294087A (en) * | 2008-06-20 | 2008-10-29 | 武汉钢铁(集团)公司 | Coke making coal blending method with black-jack participated |
| CN101735840A (en) * | 2009-12-15 | 2010-06-16 | 武汉钢铁(集团)公司 | Method for coking and mixing coal by participation of coking coal |
| CN102010736A (en) * | 2010-12-10 | 2011-04-13 | 武汉钢铁(集团)公司 | Coal blending method for substituting fat coal |
| CN102807883A (en) * | 2012-08-31 | 2012-12-05 | 武汉钢铁(集团)公司 | Gas-fat-doped coking and coal blending method |
| CN104099116A (en) * | 2014-06-30 | 2014-10-15 | 武汉钢铁(集团)公司 | Coal blending method for improving coke quality of carbonizing chamber coke oven with width over 500 mm |
| CN108256747A (en) * | 2017-12-29 | 2018-07-06 | 中国大唐集团科学技术研究院有限公司火力发电技术研究所 | Thermal power plant's coal storage coal blending intelligent management method based on K mean cluster algorithm |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2385786A1 (en) * | 1977-03-28 | 1978-10-27 | Nord Pas Calais Houilleres | PROCESS FOR OBTAINING MOLD COKE FROM NON-COKEFIABLE COALS |
| DE10201959C2 (en) * | 2002-01-19 | 2003-12-04 | Rag Ag | Process for the production of foundry coke |
| CN101870875B (en) * | 2009-04-22 | 2013-05-15 | 中国神华能源股份有限公司 | Method for producing metallurgical coke from 1/3 coking coal and non-coking coal |
| CN101967387A (en) * | 2010-07-10 | 2011-02-09 | 新兴铸管股份有限公司 | Application of medium caking coal to stamp-charging coke |
| AT510135B1 (en) * | 2010-07-12 | 2016-11-15 | Primetals Technologies Austria GmbH | PROCESS FOR PREPARING PRESS LENDS CONTAINING COAL PARTICLES |
| CN104073274B (en) * | 2013-03-27 | 2017-03-01 | 鞍钢股份有限公司 | A kind of production method of smelter coke |
| CN105861002B (en) * | 2016-05-26 | 2018-09-21 | 辽宁科技大学 | Small constant-voltage coking device and constant pressure coking process |
| CN111187634B (en) * | 2019-11-24 | 2021-07-16 | 石晶 | Intelligent forming, stacking and coking production method |
-
2020
- 2020-06-11 CN CN202010529445.4A patent/CN111621314B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294087A (en) * | 2008-06-20 | 2008-10-29 | 武汉钢铁(集团)公司 | Coke making coal blending method with black-jack participated |
| CN101735840A (en) * | 2009-12-15 | 2010-06-16 | 武汉钢铁(集团)公司 | Method for coking and mixing coal by participation of coking coal |
| CN102010736A (en) * | 2010-12-10 | 2011-04-13 | 武汉钢铁(集团)公司 | Coal blending method for substituting fat coal |
| CN102807883A (en) * | 2012-08-31 | 2012-12-05 | 武汉钢铁(集团)公司 | Gas-fat-doped coking and coal blending method |
| CN104099116A (en) * | 2014-06-30 | 2014-10-15 | 武汉钢铁(集团)公司 | Coal blending method for improving coke quality of carbonizing chamber coke oven with width over 500 mm |
| CN108256747A (en) * | 2017-12-29 | 2018-07-06 | 中国大唐集团科学技术研究院有限公司火力发电技术研究所 | Thermal power plant's coal storage coal blending intelligent management method based on K mean cluster algorithm |
Non-Patent Citations (2)
| Title |
|---|
| 4.3m捣固焦炉配煤结构的优化与应用;纪同森;《山东冶金》;20150420;第37卷(第2期);第3章，表3 * |
| 镜质组随机反射率对焦炭热态强度的影响;郑超;《煤炭转化》;20170315;第40卷(第2期);第1章，第2.5节 * |
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