CN104312608B - Height based on charred coal organization structure go bad coking coal participate in coking blending method - Google Patents
Height based on charred coal organization structure go bad coking coal participate in coking blending method Download PDFInfo
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- CN104312608B CN104312608B CN201410628440.1A CN201410628440A CN104312608B CN 104312608 B CN104312608 B CN 104312608B CN 201410628440 A CN201410628440 A CN 201410628440A CN 104312608 B CN104312608 B CN 104312608B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
Abstract
The invention discloses a kind of height based on charred coal organization structure go bad coking coal participate in coke making and coal blending method, the method includes: 1) measure height rotten coking coal, other single coking coal coking charred coal organization structures, the coarse grain mosaic texture of zone size 7～10um such as coarse grain mosaic texture, optics in statistics mixed coal, middle grain mosaic texture and incomplete fibre structure sum, silk carbon and fragmentation structure sum, the ratio of complete fiber and laminated structure sum；2) chlorine adding ratio of each single grade coal is determined, guarantee in mixed coal, the ratio of the coarse grain mosaic texture of zone size 7～10um, middle grain mosaic texture and incomplete fibre structure sum, silk carbon and fragmentation structure sum, complete fiber and the laminated structure sums such as coarse grain mosaic texture, optics.The present invention selects to limit These parameters in mixed coal and carries out coal blending, and the Y value of mixed coal and Ji Shi maximum fluidity, under reduced levels, also can be produced high grade coke, thus save the fat coal resource of good fluidity.
Description
Technical field
The invention belongs to metallurgical coking technology field, be specifically related to a kind of based on charred coal organization structure
High rotten coking coal participates in the blending method of coking.
Background technology
The fugitive constituent V of conventional coking coal in coking coaldafBetween 18～28%, the average maximum reflection of vitrinite
RateBetween 1.15～1.50%.WhereinCoking coal between 1.35～1.50% is referred to as height
Rotten coking coal, this kind of height coking coal caking index G-value that goes bad typically between 75～90, plastometer indice Y
Value is general between 14～20mm, Gu-softening temperature is interval general between 50～75 DEG C, and Ji Shi max-flow
Dynamic degree is between 10～500ddpm, and swelling degree b value is between 10%～50%, and coarse grain is inlayed component and contained
Amount is between 38～78%.According to traditional blending method, the Y value of mixed coal need to reach 15mm with
On, Ji Shi maximum fluidity reaches more than 300ddpm, just can produce high grade coke.
But, inventor finds in Coking Test for Blend and production application are put into practice:1.35～
Australian Sa Aji ore deposit coking coal, Shanxi Jinzhong area and Luliang Prefecture's part coking coal between 1.50%, one
The above-mentioned coking coal of certainty ratio participates in coal-blending coking, mixed coal Y value only between 12mm～15mm, base
Family name's maximum fluidity low value scope between 60ddpm～300ddpm, refines to obtain hot strength of coke CSR
Also more than 65% is reached.The most conventionally to such high rotten coking coal, it will transition
Consumption gel is abundant, the high-quality caking coal resource of good flowing properties, causes the wasting of resources, increases enterprise
Production cost.
Summary of the invention
The technical problem to be solved is to provide a kind of height based on charred coal organization structure and goes bad
The coke making and coal blending method that coking coal participates in, it is to avoid the mixed coal Y value that covets reaches more than 15mm, coordinates
Coal Ji Shi maximum fluidity reaches more than 300ddpm, and gel is abundant, mobile performance to cause transition to consume
The phenomenon of good high-quality caking coal resource, it is to avoid the wasting of resources, increases the performance of enterprises.
For solving above-mentioned technical problem, the blending method designed by the present invention comprises the steps:
1) measure the rotten coking coal of height, other each single grade coal coking charred coal organizations participating in coal-blending coking are tied
Structure, the coarse grain mosaic texture of the zone size 7～10um such as coarse grain mosaic texture, optics in statistics mixed coal,
Middle grain mosaic texture and incomplete fibre structure sum, silk carbon and fragmentation structure sum, complete fiber and sheet
The ratio of shape structure sum, the described height coking coal that goes bad isBetween 1.35～1.50%, G-value 75～
Between 90, Gu-softening temperature is interval between 50～75 DEG C, swelling degree b value is between 10%～50%, slightly
Grain inlays constituent content coking coal between 38～78%；
2) one group of Coal Blending Schemes is drafted according to following ranges: high rotten coking coal allocation ratio 15～45%, gas
Coal allocation ratio 5～30%, 1/3 coking coal allocation ratio 10～30%, rich coal allocation ratio 10～20%,
Middle iso-metamorphism coking coal allocation ratio 5～35%, lean coal allocation ratio 3～10%；Described middle iso-metamorphism coking coal
For the average maximum reflectivity of vitriniteCoking coal between 1.15～1.35%；
3) testing the Coal Blending Schemes drafted, touchstone is for meeting following condition simultaneously: mixed coal
Middle coarse grain mosaic texture >=20%, and coarse grain mosaic texture >=7% of the zone size 7～10um such as optics；
Middle grain mosaic texture and incomplete fibre structure sum >=7%；Silk carbon and fragmentation structure sum be 25～
35%；Fiber and laminated structure sum are 3～8% completely；
4) if drafting Coal Blending Schemes not reach touchstone, then Coal Blending Schemes is adjusted, method of adjustment:
Any or which kind optical texture is unsatisfactory for requirement, then higher or lower to this optical texture
Coal allocation ratio be adjusted, until meeting the touchstone of Coal Blending Schemes, complete Coal Blending Schemes
Formulate.
Further, the go bad Y value of coking coal of described height between 14mm～20mm, the Y of mixed coal
Value is between 12mm～15mm, and Ji Shi maximum fluidity is between 10～500ddpm.
Further, the big Giseeler fluidity of described mixed coal is between 10～240ddpm.
Further, described step 2) in, high rotten coking coal allocation ratio 15～23%, bottle coal is allocated into
Ratio 10～25%, 1/3 coking coal allocation ratio 15～25%, rich coal allocation ratio 13～18%, medium
Rotten coking coal allocation ratio 20～30%, lean coal allocation ratio 5～8%.
Further, described step 3) in, touchstone is: coarse grain mosaic texture >=21% in mixed coal,
And coarse grain mosaic texture >=7% of the zone size 7～10um such as optics；Middle grain mosaic texture is with the most fine
Dimension structure sum >=9%；Silk carbon is 28～35% with fragmentation structure sum；Completely fiber and laminated structure it
With for 3～8%.
The present invention selects to limit following index: in mixed coal the zone size 7 such as coarse grain mosaic texture, optics～
The coarse grain mosaic texture of 10um, middle grain mosaic texture are tied with fragmentation with incomplete fibre structure sum, silk carbon
The reason that structure sum, complete fiber carry out coal blending with laminated structure sum is: when there being high rotten coking coal ginseng
During with coal-blending coking, the coarse grain edge of the zone size 7～10um such as the optics that active component coking is transformed
Embedding structure STRENGTH ON COKE cold and hot state strength support effect is strong, therefore, as a restriction of mixed coal
Index；Coarse grain mosaic texture, middle grain mosaic texture and not exclusively fibre structure all support hot strength of coke,
Therefore, using coarse grain mosaic texture in mixed coal, middle grain mosaic texture and incomplete fibre structure sum as
The another two of mixed coal limits index；Fiber and laminated structure completely all deteriorates coke quality, it is necessary in addition
Limit；Silk carbon and fragmentation structure are coking centers, but with other structure combination interface existing defects, therefore,
Silk carbon and fragmentation structural content sum should control in the range of suitably.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further detailed explanation.
There are 7 kinds of coking coal resources in certain factory, wherein 2 kindsHeight between 1.35～1.50% goes bad
Coking coal, respectively numbered A ore deposit, B ore deposit；The height in these the two kinds of ore deposits coking coal G-value that goes bad between 75～90,
Swelling degree b value is between 10%～50%, and coarse grain inlays constituent content between 38～78%.Other coals
Kind of 5 ore deposit points, respectively numbered E ore deposit (bottle coal), F ore deposit (rich coal), G ore deposit (1/3 coking coal),
H ore deposit (middle iso-metamorphism coking coal), I ore deposit (lean coal)；Determine each single grade coal coking charred coal group respectively
Knit structure, the coarse grain mosaic texture of the zone sizes such as optics 7～10um is added up.
Coal Blending Schemes is drafted: high rotten coking coal allocation ratio 15～45%, bottle coal is allocated into according to following ranges
Ratio 5～30%, 1/3 coking coal allocation ratio 10～30%, rich coal allocation ratio 10～20%, medium
Rotten coking coal allocation ratio 5～35%, lean coal allocation ratio 3～10%；
Testing the Coal Blending Schemes drafted, touchstone is: in mixed coal, coarse grain mosaic texture >=
20%, and coarse grain mosaic texture >=7% of the zone size 7～10um such as optics；Middle grain mosaic texture with not
Fibre structure sum >=7% completely；Silk carbon is 25～35% with fragmentation structure sum；Fiber and lamellar completely
Structure sum is 3～8%；
If drafting Coal Blending Schemes not reach touchstone, then Coal Blending Schemes is adjusted, method of adjustment:
Any or which kind optical texture is unsatisfactory for requirement, then higher or lower to this optical texture
Coal allocation ratio be adjusted, until meeting the touchstone of Coal Blending Schemes.
Each single grade coal coking charred coal organization structural content the results are shown in Table 1, refines according to the inventive method
The specific embodiment of burnt coal blending is shown in Table 2.
Table 1 each single grade coal reflectance, coking optical texture index
Wherein, Gu softening temperature is interval: 51 DEG C of A ore deposit, 73 DEG C of B ore deposit；Ji Shi maximum fluidity A ore deposit 19ddpm, B ore deposit 326ddpm.
Table 2 embodiment 1～4, the Coal Blending Schemes of 1-1,4-1
Blending ratio is adjusted as follows:
In embodiment 1-1, although each coal blend ratio meets area requirement, but optics isochrome in mixed coal
The coarse grain mosaic texture content of district's size 7～10um is less than 7%, and hot strength of coke CSR is less than 65%.
Because in A ore deposit, the coarse grain mosaic texture content of the zone size 7～10um such as optics is the highest, by its proportioning by
15% improves to 20%, and G ore deposit proportioning reduces by 5% accordingly, sees embodiment 1, the zone such as optics in mixed coal
The coarse grain mosaic texture content of size 7～10um is brought up to 8.29% by 6.54%, completes Coal Blending Schemes
Adjusting, hot strength of coke CSR is brought up to 66.63% by 64.35%.
In embodiment 4-1, although each coal blend ratio meets area requirement, but optics isochrome in mixed coal
The coarse grain mosaic texture content of district's size 7～10um is less than 7%, and coarse grain is inlayed content and is less than 20%, Jiao
Charcoal calorific intensity CSR is less than 65%.Because in B ore deposit, the coarse grain of the zone size 7～10um such as optics inlays knot
Structure content is higher, its proportioning is improved to 30% by 20%, and G ore deposit proportioning reduces by 10% accordingly, sees enforcement
Example 4, in mixed coal, the coarse grain mosaic texture content of the zone size 7～10um such as optics is improved by 5.93%
To 8.43%, completing the adjustment of Coal Blending Schemes, hot strength of coke CSR is brought up to 67.12% by 64.06%.
Powder craft after tradition is first joined, without precomminution and selective molecular attraction, without coal damping, without moulded coal, passes
Unite under the conditions of more than 4.3 meters top dress coke oven dry coke quenching, use the inventive method gained hot strength of coke CSR
65～70%, M40 is 87～89%, and M10 is 5.5～6%, and relatively prior art reduces coal blending cost
About 4,000,000 yuan/month.
According to existing blending method, in order to ensure that mixed coal Y value reaches more than 15mm, mixed coal Ji Shi
Maximum fluidity reaches more than 300ddpm, need to reduce weakly caking bottle coal, lean coal consumption, increases colloid
1/3 coking coal of body relative abundance, coking coal and rich coal consumption.
The Coal Blending Schemes of comparative example 1,2,3,4 is shown in Table 3.
The cold and hot state intensity of 1,2,3,4 coking charcoals of comparative example is shown in Table 4.
From table 3 and 4 column data of table it can be seen that comparative example 1,2,3,4 and embodiment 1,2,3,
4 compare, and coke quality is in peer-level, and mixed coal cost is the highest 5.54 yuan/ton, affects enterprise's warp
Ji benefit.
The Coal Blending Schemes of table 3 comparative example 1,2,3,4
1,2,3,4 coking charcoal cold and hot state intensity of table 4 comparative example
| Embodiment | M25/% | M10/% | CRI/% | CSR/% |
| Comparative example 1 | 88.78 | 9.25 | 20.02 | 66.71 |
| Comparative example 2 | 90.33 | 8.53 | 18.77 | 68.64 |
| Comparative example 3 | 89.57 | 9.38 | 19.15 | 66.52 |
| Comparative example 4 | 90.29 | 9.13 | 19.76 | 67.34 |
Claims (6)
1. height based on charred coal organization structure goes bad the coke making and coal blending method that coking coal participates in, and it is special
Levy and be: this blending method comprises the steps:
1) measure the rotten coking coal of height, other each single grade coal coking charred coal organizations participating in coal-blending coking are tied
Structure, the coarse grain mosaic texture of the zone size 7～10um such as coarse grain mosaic texture, optics in statistics mixed coal,
Middle grain mosaic texture and incomplete fibre structure sum, silk carbon and fragmentation structure sum, complete fiber and sheet
The ratio of shape structure sum, the described height coking coal that goes bad isBetween 1.35～1.50%, G-value 75～
Between 90, Gu-softening temperature is interval between 50～75 DEG C, swelling degree b value is between 10%～50%, slightly
Grain inlays constituent content coking coal between 38～78%；
2) coal blending is carried out according to following Coal Blending Schemes: high rotten coking coal allocation ratio 15～45%, bottle coal is joined
Enter ratio 5～30%, 1/3 coking coal allocation ratio 10～30%, rich coal allocation ratio 10～20%, in
Iso-metamorphism coking coal allocation ratio 5～35%, lean coal allocation ratio 3～10%；Described middle iso-metamorphism coking coal is
The average maximum reflectivity of vitriniteCoking coal between 1.15～1.35%；
And meet: in mixed coal, coarse grain mosaic texture >=20%, and the zone size 7～10um such as optics
Coarse grain mosaic texture >=7%；Middle grain mosaic texture and incomplete fibre structure sum >=7%；Silk carbon is with broken
Chip architecture sum is 25～35%；Fiber and laminated structure sum are 3～8% completely.
Height based on charred coal organization structure the most according to claim 1 go bad coking coal participate in refining
Burnt blending method, it is characterised in that: the go bad Y value of coking coal of described height between 14mm～20mm,
The Y value of mixed coal is between 12mm～15mm, and Ji Shi maximum fluidity is between 10～500ddpm.
Height based on charred coal organization structure the most according to claim 1 and 2 go bad coking coal participate in
Coke making and coal blending method, it is characterised in that: the Ji Shi maximum fluidity of described mixed coal is 10～240ddpm
Between.
Height based on charred coal organization structure the most according to claim 1 and 2 go bad coking coal participate in
Coke making and coal blending method, it is characterised in that: described step 2) in, high rotten coking coal allocation ratio 15～
23%, bottle coal allocation ratio 10～25%, 1/3 coking coal allocation ratio 15～25%, rich coal allocation ratio
13～18%, middle iso-metamorphism coking coal allocation ratio 20～30%, lean coal allocation ratio 5～8%.
Height based on charred coal organization structure the most according to claim 1 and 2 go bad coking coal participate in
Coke making and coal blending method, it is characterised in that: described step 2) in, coarse grain mosaic texture >=21% in mixed coal,
And coarse grain mosaic texture >=7% of the zone size 7～10um such as optics；Middle grain mosaic texture is with the most fine
Dimension structure sum >=9%；Silk carbon is 28～35% with fragmentation structure sum；Completely fiber and laminated structure it
With for 3～8%.
Height based on charred coal organization structure the most according to claim 3 go bad coking coal participate in refining
Burnt blending method, it is characterised in that: described step 2) in, coarse grain mosaic texture >=21% in mixed coal,
And coarse grain mosaic texture >=7% of the zone size 7～10um such as optics；Middle grain mosaic texture is with the most fine
Dimension structure sum >=9%；Silk carbon is 28～35% with fragmentation structure sum；Completely fiber and laminated structure it
With for 3～8%.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104655818B (en) * | 2015-02-13 | 2016-04-13 | 武汉钢铁(集团)公司 | The Forecasting Methodology of coal-blending coking coke shatter strength |
| CN104745217A (en) * | 2015-04-01 | 2015-07-01 | 武汉钢铁(集团)公司 | Blending method of high-metamorphous coking coal |
| CN105062532B (en) * | 2015-09-02 | 2017-05-10 | 武汉钢铁(集团)公司 | Coal blending method for controlling coke quality |
| CN110746997B (en) * | 2019-10-29 | 2021-03-19 | 武汉钢铁有限公司 | Method for refining metallurgical coke |
| CN111029576B (en) * | 2019-11-12 | 2023-09-29 | 山西沁新能源集团股份有限公司 | Method for blending crystalline carbon precursor coal |
| CN113621393B (en) * | 2021-07-21 | 2022-11-01 | 武汉钢铁有限公司 | Classification matching method of coking coal with 18-22% of volatile matter |
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| KR20000019095A (en) * | 1998-09-08 | 2000-04-06 | 윤대근 | Preparation method of coke with high crystallization |
| 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 |
| CN103923678A (en) * | 2014-04-24 | 2014-07-16 | 武汉钢铁(集团)公司 | Coking coal blending method of improving homogeneity coefficient of coke size |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000019095A (en) * | 1998-09-08 | 2000-04-06 | 윤대근 | Preparation method of coke with high crystallization |
| 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 |
| CN103923678A (en) * | 2014-04-24 | 2014-07-16 | 武汉钢铁(集团)公司 | Coking coal blending method of improving homogeneity coefficient of coke size |
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