CN100547054C - A kind of first-class metallurgical coke feedstock composition and production method thereof of producing with ordinary coking coal - Google Patents
A kind of first-class metallurgical coke feedstock composition and production method thereof of producing with ordinary coking coal Download PDFInfo
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- CN100547054C CN100547054C CNB2006101172532A CN200610117253A CN100547054C CN 100547054 C CN100547054 C CN 100547054C CN B2006101172532 A CNB2006101172532 A CN B2006101172532A CN 200610117253 A CN200610117253 A CN 200610117253A CN 100547054 C CN100547054 C CN 100547054C
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Abstract
The present invention relates to a kind of coke and production method thereof, particularly a kind of first-class metallurgical coke and production method thereof of producing with ordinary coking coal.Mainly solve to adopt the technical problem of the higher and inadequate resource of the burnt cost of fat coal production one-level.Technical scheme of the present invention is: a kind of first-class metallurgical coke of producing with ordinary coking coal, and the weight percent of its moiety is: rich coal: 15～20%, 1/3 coking coal: 10～20%, coking coal: 40～50%, bottle coal: 15～25%, refinery coke: 5～8%.Wherein: mixed coal granularity≤3mm partly accounts for total amount more than 75%, the ash of refinery coke (Ad)≤0.55%, the refinery coke sulfur (St, ad)≤0.50%, the fugitive constituent of refinery coke (Vdaf)≤11.5%.Utilize the present invention in ordinary coking coal, to add refinery coke and can produce low ash, low-sulfur, metallurgical one-level Jiao that the cold strength tool is good.
Description
Technical field:
The present invention relates to a kind of coke and production method thereof, particularly a kind of feedstock composition and production method thereof of producing first-class metallurgical coke with ordinary coking coal.
Background technology:
Metallurgical coke is the coking coal admixtion product that the secluding air heat is produced in pit kiln, and metallurgical coke is that blast furnace ironmaking is produced necessary fuel, and it also plays reductive agent, the energy and skeleton supporting role in ironmaking is produced.Therefore the metallurgical coke that requires to be used to smelt iron has lower ash, sulfur, and good ripening degree and cold strength, hot strength are arranged.The metallurgical coke quality is divided into three grades according to GB, sees Table 1:
Table 1 metallurgical coke criteria for classification GB/T1996-2003
According to the requirement of metallurgical coke quality, the coal blending that is used for coking must have lower ash, sulfur, good adhesive property and coking behavior, and obtaining under coke oven heating cycle and the operating duty preferably.Though it is very abundant that China is used for the coal of coking, because low ash, low-sulfur and coking behavior are good that coking coal lacks, so the coke of producing mostly is secondary, three grades of metallurgical cokes at present.And the domestic and international at present demand for one-level Jiao increases day by day, how to utilize common coking coal, produces one-level Jiao cheaply on the basis, is a difficult problem of being badly in need of solution.Chinese patent application CN96122322 provides " a kind of with hard coal production casting formed coke and production method thereof ", in moiety, added 10～26% refinery coke, a kind of new approaches of coke production are provided, though but most refinery coke calorific value is than higher, fugitive constituent and ash are lower, but because its moisture content and sulfur are higher, with production one-level Jiao require contradictory, and its price is higher than coking coal, also has no talent and this is done deep research.
Summary of the invention:
The purpose of this invention is to provide the feedstock composition and the production method thereof of producing first-class metallurgical coke with ordinary coking coal, mainly solve the technical problem that adopts the higher and inadequate resource of the burnt cost of fat coal production one-level.Technical scheme is: a kind of feedstock composition with ordinary coking coal production first-class metallurgical coke, and the weight percent of its moiety is:
Rich coal: 15～20%,
1/3 coking coal: 10～20%,
Coking coal: 40～50%,
Bottle coal: 15～25%
Refinery coke: 5～8%.
Wherein: partly account for total amount more than 75% with addition of coal particle degree≤3mm, the ash of refinery coke (Ad)≤0.55%, the refinery coke sulfur (St, ad)≤0.50%, the fugitive constituent of refinery coke (Vdaf)≤11.5%.
A kind of production method of producing first-class metallurgical coke with ordinary coking coal, it at first is the preparation of raw material, take by weighing raw material by said ratio, pulverize after then various coals cooperations being mixed thoroughly, make various pulverized coal particle degree≤3mm partly account for total amount more than 75%, pack into the coking chamber of coke oven of mixed coal after will pulverizing again, coking rules are routinely operated, and can obtain first-class metallurgical coke.
The invention has the beneficial effects as follows: common coal dust is by after adding necessarily required 5～8% refinery cokes, and the requirement of ash has reached one-level Jiao's requirement; And behind the interpolation refinery coke, various intensity indexs are improved, and the physical strength of coke reaches one-level Jiao's level; The adding of rich coal helps improving the shatter strength of coke in addition.Though after refinery coke added, the cost of coke had also risen, with respect to the price difference of I and II coke, coke per ton can increase is benefited 20～70 yuan.
Embodiment:
Embodiment and comparative example are to carry out at 20 kilograms testing coke oven, the coking chamber width of testing coke oven is 200mm, virtual height is 400mm, the useful volume of coking chamber is 0.032 cubic metre, testing coke oven adopts the Si-Mo rod electrically heated, use the micro-chip temperature control, furnace roof is directly coaling, and the main operation index of ripe coke oven is as follows:
Shove charge coal weight: 23 kilograms
Shove charge coal moisture content: 10 ± 1%
Shove charge coal dust particle degree :≤3mm partly accounts for total amount more than 75%
Charge of coke core temperature:＞950 ℃; Chamber temperature: 1060 ℃
Coking time: 8 hours
The coke water of discharging from testing coke oven carries out wet quenching, treats to carry out falling for twice after Jiao dries, and carries out the coke screening component with AG-90 type vibratory screening apparatus then and measures.From 40～60mm, 60～80mm,＞take 10 kilograms of burnt samples according to part by weight three grades of burnt samples of 80mm, (Φ 1000 * 250mm) carries out the coke physical strength and measures with 1/4 Micoud nurse rotary drum.The rotary drum rotating speed is 25 rev/mins, goes out bulging Jiao after changeing through 100 and sieves with AK-90 type swing type mechanical picker, records test coke strenth index M
40And M
10, keep sample after the screening and make industry analysis and hot strength mensuration.The GB that technical analysis and hot strength are measured is routinely carried out.Embodiment and comparative example see Table 2: table 2 is the enforcement of 5 embodiment and 3 comparative examples and detects data
Wherein 3 and 5 is comparative example, and selected refinery coke 2 is Anqing refinery coke, and performance data is: ash is 0.58%, and sulfur is 1.49%, and fugitive constituent is 11.07.Among the embodiment, refinery coke 1 is the Jinxi refinery coke, and performance data is ash≤0.55%, sulfur≤0.50%, fugitive constituent≤11.5%.Embodiment 6 also is a comparative example, does not add refinery coke.According to the data of table 2 as can be seen, after having added refinery coke, the ash of coke has reached one-level Jiao's standard all less than 12%, add specific refinery coke after, the sulfur of coke is all less than 0.6%, if but refinery coke is not required, sulfur is higher in refinery coke, with reference to embodiment 3 and embodiment 5, the coke sulfur that then obtains is greater than 0.6%, has only secondary Jiao's level.According to embodiment, behind the refinery coke that adds weight percent 5～8%, testing coke oven obtains M
40All greater than 72%, according to producing dependency burnt and that test is burnt, when being used for ordinary production, the M that obtains
40To reach the burnt level of one-level, same M greater than 80%
25Will be greater than 90%, M
10To reach the burnt level of one-level less than 7.5%.And behind the interpolation refinery coke, the intensity behind the coke gasification reaction improves 3% approximately.From embodiment, it can also be seen that, suitably improve the shatter strength M that the rich coal proportioning can improve coke
40For further improving operability of the present invention, to produce in batches in the JNX3 Formed Coke Furnace, operating procedure carries out routinely, and coking time is 28 hours.Implementation data sees the following form 3,
Bottle coal is selected from the colliery, Xuzhou in an embodiment, and rich coal is selected from suffering and puts colliery and day wind colliery, and 1/3 coking coal is selected from luling coal mine, and coking coal is selected to face and melts colliery and colliery, Shitai County.Coke cost per ton increases by 29 yuan after adopting refinery coke, increases by 50～100 yuan but price is per ton.
Claims (1)
1, a kind of feedstock composition with ordinary coking coal production first-class metallurgical coke, the weight percent of its moiety is:
Rich coal: 15～20%,
1/3 coking coal: 10～20%,
Coking coal: 40～50%,
Bottle coal: 15～25%
Refinery coke: 5～8%,
Wherein: mixed coal granularity≤3mm partly accounts for total amount more than 75%, the ash of refinery coke≤0.55%, refinery coke sulfur≤0.50%, the fugitive constituent of refinery coke≤11.5%.
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| CNB2006101172532A CN100547054C (en) | 2006-10-18 | 2006-10-18 | A kind of first-class metallurgical coke feedstock composition and production method thereof of producing with ordinary coking coal |
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| CN100547054C true CN100547054C (en) | 2009-10-07 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101250418B (en) * | 2008-04-08 | 2011-12-21 | 朱海涛 | Gasification, dry distillation and carbonization integrated system carbonization method |
| RU2461602C1 (en) * | 2011-05-20 | 2012-09-20 | Открытое акционерное общество "Северсталь" (ОАО "Северсталь") | Method for charge forming for furnace coke obtaining |
| RU2540554C2 (en) * | 2013-03-22 | 2015-02-10 | Открытое акционерное общество "Магнитогорский металлургический комбинат" | Method of coal charge making and preparation for metallurgical coke manufacturing |
| CN104232132A (en) * | 2013-06-17 | 2014-12-24 | 上海梅山钢铁股份有限公司 | Petroleum coke-added coke and coking method |
| CN105462600A (en) * | 2014-09-30 | 2016-04-06 | 上海梅山钢铁股份有限公司 | Coke prepared from anthracite, and coking method |
| CN106833707A (en) * | 2017-01-20 | 2017-06-13 | 青岛联合冶金研究院有限公司 | For manufacturing the mixed coal of cupola coke and the cupola coke including it and its manufacture method |
| CN114199728B (en) * | 2020-09-18 | 2023-09-01 | 宝武碳业科技股份有限公司 | Automatic analysis and detection method and detection device for needle coke |
| CN112129916A (en) * | 2020-10-30 | 2020-12-25 | 江苏沙钢集团有限公司 | Coke sample detection preparation method |
| CN115433593B (en) * | 2022-08-10 | 2023-06-09 | 武汉钢铁有限公司 | Coke oven heating method matched with fineness of coal entering furnace |
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Non-Patent Citations (2)
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| 在配煤中添加石油焦对焦炭质量的影响. 何选明等.燃料与化工，第37卷第4期. 2006 |
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