CN102627977A - Method for expanding coking coal resources - Google Patents
Method for expanding coking coal resources Download PDFInfo
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- CN102627977A CN102627977A CN2012100904789A CN201210090478A CN102627977A CN 102627977 A CN102627977 A CN 102627977A CN 2012100904789 A CN2012100904789 A CN 2012100904789A CN 201210090478 A CN201210090478 A CN 201210090478A CN 102627977 A CN102627977 A CN 102627977A
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- 239000003245 coal Substances 0.000 title claims abstract description 160
- 238000004939 coking Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 239000004480 active ingredient Substances 0.000 claims description 10
- 239000003077 lignite Substances 0.000 claims description 6
- 238000005188 flotation Methods 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000470 constituent Substances 0.000 abstract 1
- 239000004079 vitrinite Substances 0.000 description 15
- 239000000571 coke Substances 0.000 description 14
- 238000009826 distribution Methods 0.000 description 5
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical group CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241001062472 Stokellia anisodon Species 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000003350 kerosene Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
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Abstract
The invention discloses a method for expanding coking coal resources. The method comprises the following steps: removing inert constituents from low metamorphic coal by adopting a sorting method and separating to obtain an activity-rich component product; and secondly, carrying out coal blending for coking on the activity-rich component product and high-quality coking coal. The low metamorphic coal used in the method is abundant in reserve in China and low in utilization rate; and the charging ratio of the low metamorphic coal in the coal coking and blending process is increased, so that coking coal resources in China is expanded and an effective path for overcoming the shortage of coking coal resources and realizing reasonable utilization of the low metamorphic coal is provided.
Description
Technical field
The present invention relates to energy technology field, relate in particular to a kind of method that enlarges coking coal resource.
Background technology
China's energy general layout is rich coal, oil-poor, weak breath, and in considerable time from now on, coal can not change as the status of main primary energy source.And the coal resources in China unreasonable structure; Low rank coal (brown coal, long-flame coal, weakly caking coal, non-caking coal etc.) quantity is a lot, accounts for 57.4% of coal in China total reserves, medium metamorphic grade coking coal (8 kinds of bottle coal, rich coal, coking coal, lean coals etc.) comparatively small amt; Only account for and verified 29.0% of total amount; And wherein bottle coal and 1/3 coke ratio example are more, account for 45.73% of coking coal total amount, and rich coal (comprising gas-fat coal) accounts for 12.81%; The coking coal ratio is 23.61%, and lean coal (comprising meager lean coal) is 15.89%.In the long term, the high-quality caking coal shortage of resources is the significant problem that China can not be ignored, and therefore will rationally utilize high-quality caking coal, enlarges coking coal resource.
At present, it is a lot of to explore the applied research of expansion coking coal resource, and Chinese scholars has been carried out a series of coal blending tests of in coking coal, allocating materials such as hard coal, meager lean coal, coke powder, pitch, plastic waste into, and obtains good achievement in research.Also carry out a series of simultaneously to low rank coal (as to long-flame coal, weakly caking coal, non-caking coal etc.) coal-blending coking experimental study; Shao Youhui utilizes weakly caking coal to cooperate with coking coal and makes an experiment; The result is illustrated in and allocates 3% weakly caking coal in the mixed coal into, and the STRENGTH ON COKE quality is influence not; Chen Zhongfeng etc. have studied the feasibility of the alternative a small amount of bottle coal coal-blending coking of long-flame coal; The result shows the increase along with the coal blending long-flame coal amount of allocating into; Coke quality is variation gradually, but when the long-flame coal addition is controlled in 7%, the flex point of the rapid deterioration of coke quality do not occur; Liao Zhanping carries out coal blending with hard coal, non-caking coal and production coal sample, and the result shows: when the production coal of allocating 85% into, and 5% hard coal and 10% non-caking coal, and add 0.1% ZZZ properties-correcting agent, the coke quality accords with production requirement of producing.Zhou Shiyong etc. are research object with Jurassic Datong District weakly caking coal, find that the vitrinite in Datong District's coal has weakly caking property, and the ability of just cohering nonreactant is relatively poor, and allocating an amount of this kind coal into is to be smelt the good lump coke of quality.It is to obtain up-to-standard coke that the low metamorphic grade coal coking is allocated in above conclusion explanation into, but its allocation ratio is lower, and it is limited to enlarge coking coal resource.Seen that by prior art for guaranteeing to produce qualified coke, the allocation ratio of low rank coal in coal blending is no more than 10%, this rationally utilizes degree limited to expansion coking coal resource and low rank coal.
Summary of the invention
The technical problem that the present invention solves is how to improve the allocation ratio of low rank coal in coal blending.
In order to overcome the above problems, the present invention provides a kind of method that enlarges coking coal resource, may further comprise the steps: adopt sorting method from low rank coal, to remove inerts e, separate obtaining rich active ingredient product; Again itself and high-quality caking coal are carried out coal-blending coking.
Further,, obtain the organic micropetrological unit of low rank coal coal petrography before the sorting earlier and in different grades, distributes to compose and deposit rule, deposit rule according to the tax that distributes then and adopt different sorting method as a kind of preferred version.
Further, as a kind of preferred version, said low rank coal is a sticking coal in brown coal, long-flame coal, weakly caking coal, the non-caking coal or 1/2.
Further, as a kind of preferred version, said high-quality caking coal is bottle coal, rich coal, coking coal or lean coal.
Through obtaining low rank coal active ingredient product and high-quality caking coal coal-blending coking rule; It is the use characteristics change of properties rule of different low rank coals and the mixed coal of coking coal of different nature under different ratios; Thereby increase the ratio of low rank coal in coke making and coal blending; Reach more than 20%, enlarge China's coking coal resource, with the reasonable utilization that realizes low rank coal valid approach is provided for solving China's coking coal resource shortage.
Description of drawings
When combining accompanying drawing to consider; Through with reference to following detailed, can more completely understand the present invention better and learn wherein many attendant advantages easily, but accompanying drawing described herein is used to provide further understanding of the present invention; Constitute a part of the present invention; Illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute to improper qualification of the present invention, wherein:
Fig. 1 coking coal preparation method embodiment schema.
Embodiment
Followingly embodiments of the invention are described with reference to Fig. 1.
For make above-mentioned purpose, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and embodiment the present invention done further detailed explanation.
Embodiment 1
A kind of method that enlarges coking coal resource may further comprise the steps:
Adopt sorting method from low rank coal, to remove inerts e, separate obtaining rich active ingredient product;
Again itself and high-quality caking coal are carried out coal-blending coking.
Embodiment 2
S1, get a certain amount of low rank coal earlier;
S2, the regularity of distribution of the research organic micropetrological unit of coal petrography in different rank coals;
Or S3, the regularity of distribution of the organic micropetrological unit of coal petrography in the different grain size level;
Or S4, the regularity of distribution of the organic micropetrological unit of coal petrography in the different densities level;
S5, screening sorting;
Or S6, heavy-liquid concentration;
Or S7, flotation sorting;
Or S8, the sorting of interference bed;
S9, obtain active micropetrological unit;
S10～S13, carry out the different ratios proportioning according to different coking coals;
S14, acquisition coal-blending coking rule.
Embodiment 3
Below specifically illustrate; For coking coal; Through crushing test, size analysis, float-and-sink analysis, obtain organic active component (vitrinite, chitin group) and inerts e (inertinite), the distribution in different grain size, different densities is composed and is deposited rule; According to the regularity of distribution of active ingredient and inerts e, obtain sorting, the enriching method of the organic micropetrological unit of coal petrography efficiently.As open Luan Qian Jiaying float coal, its vitrinite's content increases along with reducing of granularity, reduces along with the increase of density, can realize the separation of organic micropetrological unit through screening, gravity treatment.After this float coal (vitrinite's content 64.66%) is adopted fragmentation, adopt 0.3mm to carry out classification, can obtain vitrinite's content 78.01%-the rich vitrinite of 0.3mm product, this realizes the enrichment with vitrinite that removes of inertinite to a certain extent; When employing-1.30Kg/l separating density is carried out gravitational segregation, can obtain vitrinite's product of 89.79～95.75%, the recovery 8%-35% of vitrinite, inertinite decreasing ratio 94%-99%; When the Qian Jiaying float coal is crushed to-during 0.5mm, adopt a certain amount of collecting agent kerosene, the secondary octanol of pore forming material, can obtain vitrinite's content through flotation is to be higher than 77.51% rich vitrinite product, vitrinite's recovery 25%, inertinite decreasing ratio 89%; Split Luan Qian Jiaying float coal, be crushed to-the 3mm coal sample, can realize the separation of the organic micropetrological unit of coal petrography, when ascending water speed is 15LPM, can obtain the rich vitrinite product of vitrinite's content 72.98% through disturbing bed; Above method is suitable for low rank coal, as gluing coal etc. in brown coal, long-flame coal, weakly caking coal, the non-caking coal, 1/2, adopts screening, gravity treatment, the sorting of interference bed and flotation can realize the sorting of the organic micropetrological unit of coal petrography.
Embodiment 4
For low rank coal, adopt crusher to carry out fragmentation, sieve the separation that sorting can realize organic micropetrological unit through 0.3-0.9mm; Adopt the 1.30-1.35kg/l separating density to carry out sorting, can realize the sorting of organic micropetrological unit; Adopt and disturb the bed sorting, when being crushed to-3mm, the ascending water speed of employing 12-18LPM can be realized the sorting of organic micropetrological unit; Coal sample is crushed to-0.5mm; Through flotation, under a certain amount of collecting agent kerosene, the secondary octanol of pore forming material, can realize removing of inertinite branch; Obtain vitrinite's enriched products, this method flow be applicable to brown coal, long-flame coal, non-caking coal, in low rank coal such as sticking coal;
Embodiment 5
Find that by the investigator rich active ingredient product has cohesiveness and coking property preferably, and is more favourable to being smelt the acceptable quality coke; Theoretical analysis in view of the above; Satisfying under the coke quality situation, with respect to the product that does not remove through inerts e, through removing the rich active ingredient product of inerts e, acquisition; Allocation ratio in mixed coal is higher, can realize the increase of coking coal resource.
The data support is following:
For long-flame coal; Adopting-1.30 densimetric fraction products (active component content is high) and 1.35-1.40 densimetric fraction product (active component content is low) to carry out coal blending with coking coal respectively and measure index of cementation (is the index of weighing the coking coal adhesive property; But not the final index of weighing coke quality); When requiring mixed coal index of cementation＞85, the allocation ratio of-1.30 densimetric fraction products can reach 40%, the allocation ratio of 1.35-1.40 densimetric fraction product then near but be no more than 30%.For brown coal, its allocation ratio then is about 25%.Can cohesiveness guarantee to produce qualified coke well and need the further experiment support, do not have this related data at present.
So embodiment 5,, adopt sorting method efficiently for long-flame coal; Like gravity separation method; Adopt separating density 1.30-1.35 separating density, obtain to remove the rich active ingredient product of inerts e product, this active ingredient product and different types of high-quality caking coal (coking coal, 1/3 Jiao, gas-fat coal etc.) are carried out coal blending test; It is qualified down to obtain coke quality, and allocation ratio is higher than 20% or higher coal blending scheme.This instance is equally applicable to other low rank coals.
As stated, embodiments of the invention have been carried out explanation at length, but as long as not breaking away from inventive point of the present invention and effect in fact can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation also all is included within protection scope of the present invention.
Claims (7)
1. method that enlarges coking coal resource is characterized in that: may further comprise the steps:
Adopt sorting method from low rank coal, to remove inerts e, separate obtaining rich active ingredient product;
Again itself and high-quality caking coal are carried out coal-blending coking.
2. a kind of according to claim 1 method that enlarges coking coal resource is characterized in that: said sorting method comprises screening and/or gravity treatment and/or disturbs bed sorting and/or flotation.
3. a kind of according to claim 1 method that enlarges coking coal resource; It is characterized in that: obtain the organic micropetrological unit of low rank coal coal petrography before the sorting earlier and in different grades, distributes to compose and deposit rule, deposit rule according to the tax that distributes then and adopt different sorting method.
4. a kind of according to claim 1 method that enlarges coking coal resource is characterized in that, comprising: said carry out coal-blending coking before, obtain the coal-blending coking rule of coal petrography active ingredient product and high-quality caking coal.
5. like the said a kind of method that enlarges coking coal resource of one of claim 1～4, it is characterized in that: said low rank coal is a sticking coal in brown coal, long-flame coal, weakly caking coal, the non-caking coal or 1/2.
6. like the said a kind of method that enlarges coking coal resource of one of claim 1～4, it is characterized in that: said high-quality caking coal is bottle coal, rich coal, coking coal or lean coal.
7. like the said a kind of method that enlarges coking coal resource of one of claim 1～4,, it is characterized in that: said coal blending ratio >=20%.
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| CN2012100904789A CN102627977A (en) | 2012-03-30 | 2012-03-30 | Method for expanding coking coal resources |
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| CN2012100904789A CN102627977A (en) | 2012-03-30 | 2012-03-30 | Method for expanding coking coal resources |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551238A (en) * | 2013-10-31 | 2014-02-05 | 神华集团有限责任公司 | Enrichment method of coal micromaceral |
| CN108192648A (en) * | 2017-12-15 | 2018-06-22 | 新疆八钢铁股份有限公司 | A kind of technique that Ou Ye oven cokes are refined based on bottle coal |
| CN111286381A (en) * | 2020-03-23 | 2020-06-16 | 汝州天瑞煤焦化有限公司 | Tamping coking coal blending method for blending sticky coal in Huang Ling 1/2 |
| US10906048B1 (en) * | 2019-07-18 | 2021-02-02 | Taiyuan University Of Technology | Process for macroscopically separating maceral concentrate from raw coal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551238A (en) * | 2013-10-31 | 2014-02-05 | 神华集团有限责任公司 | Enrichment method of coal micromaceral |
| CN103551238B (en) * | 2013-10-31 | 2016-08-24 | 神华集团有限责任公司 | The enrichment method of coal macerals |
| CN108192648A (en) * | 2017-12-15 | 2018-06-22 | 新疆八钢铁股份有限公司 | A kind of technique that Ou Ye oven cokes are refined based on bottle coal |
| US10906048B1 (en) * | 2019-07-18 | 2021-02-02 | Taiyuan University Of Technology | Process for macroscopically separating maceral concentrate from raw coal |
| CN111286381A (en) * | 2020-03-23 | 2020-06-16 | 汝州天瑞煤焦化有限公司 | Tamping coking coal blending method for blending sticky coal in Huang Ling 1/2 |
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Application publication date: 20120808 |