CN105603180A - Method for producing sinter at low cost - Google Patents
Method for producing sinter at low cost Download PDFInfo
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- CN105603180A CN105603180A CN201610059068.6A CN201610059068A CN105603180A CN 105603180 A CN105603180 A CN 105603180A CN 201610059068 A CN201610059068 A CN 201610059068A CN 105603180 A CN105603180 A CN 105603180A
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- coke
- sintering
- breeze
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- blue charcoal
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
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- Geochemistry & Mineralogy (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
According to a method for producing sinter at low cost, semi-coke breeze and coke breeze are mixed according to the mass ratio of 20:80 or 40:60 to serve as sintering fuel and then directly conveyed into a sintering system; or semi-coke breeze and coke breeze are mixed according to the mass ratio of 20:80 and matched in the sintering system for the first time; then semi-coke breeze and coke breeze are mixed according to the mass ratio of 30:70 and matched in the sintering system for the second time; lastly, semi-coke breeze and coke breeze are mixed according to the mass ratio of 40:60 and matched in the sintering system for the last time; the total masses in three times of matching are equal. According to the method, semi-coke freeze is used for replacing coke freeze, the utilization rate of semi-coke freeze is increased, the industry chain is positively extended, comprehensive benefits of the semi-coke industry are increased, setting of semi-coke technical equipment is accelerated, the industrial level is raised, and the method becomes a key task for promoting sustainable development of the semi-coke industry.
Description
Technical field
The invention belongs to production field of metallurgy resource comprehensive and recycle, particularly a kind of low-cost productionThe method of sintering deposit.
Background technology
Blue charcoal end is taking the weakly caking of high volatile or non-cohesiveness fine coal as raw material, through in low temperature distillation removeRemove the semicoke product after tar material and most of volatile in coal.
Blue charcoal end is of many uses, both can progressively replace metallurgical coke and be widely used in calcium carbide, ferroalloy, siliconThe production of the product such as iron, carborundum, also can replace coke (metallurgical coke) be widely used in chemical industry, smelting,The industries such as gas making. From sexual valence recently, the quality and performance at blue charcoal end is better than anthracite and meager coal, poor thinCoal; From resource, for the production of not cohesiveness or the weakly caking high-volatile bituminous coal of high-quality at blue charcoal endResource is far away more than can be used for the high-quality anthracite of blast furnace blowing and meager coal, meager lean coal.
Be subject to the impact of global stagflation and state macro-control, since fourth quarter in 2011, IState's steel industry has entered the extreme meagre profit phase, and iron and steel enterprise makes system crude fuel cost before reducing iron one after anotherFor the important means of cost efficiency. Sintering deposit cost accounts for 50% of pig iron cost, and sintering deposit solid fuelCost accounts for 45% of power, fuel cost, and therefore, the height of sintering deposit solid fuel cost is to the pig ironCost impact is larger, and substituting expensive coke powder with low price high performance fuel is to reduce the front production cost of ironOne of effective measures.
Obtain through refining in the process of burnt oil and gas in pyrolysis of coal, produce a large amount of semicoke byproducts. According to coalPyrolytic process difference, blue charcoal mainly comprises blue charcoal end, the blue charcoal of solid thermal carriers end, the blue charcoal and defeated of band ovenSend bed blue charcoal end, at present common is mainly blue charcoal end.
The widely used sintering solid fuel of current national steel industry has coke powder, bituminous coal. Coke powder is because of fixingCarbon is high, ash content, volatile matter are low and be widely used, and the sintering character of bituminous coal is slightly poor compared with coke powder, and part hasThe enterprise of bituminous coal buying advantage is used bituminous coal for replacing coke powder. Blue charcoal is a kind of New Type of Carbon that developed recently gets upCellulosic material, claims again semicoke, is to utilize high-quality dwarf sieve essence coal cinder that Shenfu coalfield abounds with to fire to form, itsHave that fixed carbon is high, higher than resistance, chemism is high, containing ash content is low, aluminium is low, sulphur is low, phosphorus is low spyProperty, because of blue charcoal end different from coke production technique, so the last market price of blue charcoal is low compared with coke. Test withCoke powder, bituminous coal and the blue charcoal end of the conventional application of sintering compare, from fuel performance, sintering process, sinteringOre deposit metallurgical performance three aspects:, carries out scientific experimentation analyses and comparison.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of low-cost productionThe method of sintering deposit, for breeze, has strengthened the dynamics of utilizing at blue charcoal end with blue charcoal last reign of a dynasty, has actively extendedIndustrial chain, has improved blue charcoal industry comprehensive benefit, has accelerated blue charcoal technical equipment sizing, has promoted industryChange level, becomes the mission critical that promotes the sustainable development of blue charcoal industry.
To achieve these goals, the technical solution used in the present invention is:
A method for low-cost production sintering deposit, by blue charcoal end and breeze according to mass ratio 20:80 orThe ratio of 40:60 is mixed as sintering fuel, directly sends into sintering system; Or:
Blue charcoal end is mixed according to the ratio of mass ratio 20:80 with breeze, allocate first sintering system into; AgainBlue charcoal is mixed according to the ratio of mass ratio 30:70 with breeze, and secondary is allocated sintering system into; Finally by orchidMix according to the ratio of mass ratio 40:60 with breeze at charcoal end, and last is allocated sintering system into; Allocate into for three timesGross mass equates.
The granularity condition of described blue charcoal end and breeze is for being less than 5mm.
The sulfur content of described blue charcoal is less than 0.5%.
The volatile matter of described blue charcoal is less than 8%.
Compared with prior art, the invention has the beneficial effects as follows:
(1) will further expand the industrial application of blue charcoal, be conducive to accelerate industry development.
(2) the supply situation being becoming tight breeze day can be alleviated in blue charcoal end as sintering imitation frosted glass, is conducive to blue charcoalEnd is as the application of sintering fuel technology.
(3) blue charcoal end, as sintering fuel, meets the requirement of national current energy-saving and emission-reduction. Meanwhile, cheapBlue charcoal price, will significantly promote the economic benefit of down-stream enterprise.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further details.
Embodiment mono-
A method for low-cost production sintering deposit, utilizes blue charcoal end as sintering fuel, by blue charcoal end,Breeze mixes according to the ratio of mass ratio 20:80, under the condition of suitable granularity, sneaks into sintering system. ItsThe chemical composition of middle blue charcoal end and breeze is as shown in table 1.
The chemical composition of table 1 blue charcoal end and breeze
| Project | (ten thousand t) for annual requirement | Fixed carbon (%) | Ash content (%) | Volatile matter (%) | Moisture content (%) | Sulphur (%) |
| Breeze | 17 | ≥80.0 | ≤15.0 | ≤2.0 | ≤15.0 | ≤0.80 |
| Blue charcoal end | 32 | ≥80.0 | ≤10.0 | ≤8.0 | ≤8.0 | ≤0.50 |
Embodiment bis-
A method for low-cost production sintering deposit, utilizes blue charcoal end as sintering fuel, by blue charcoal end,Breeze mixes according to the ratio of mass ratio 40:60, under the condition of suitable granularity, sends into sintering system. BlueThe chemical composition of charcoal end and breeze is as shown in table 1.
Embodiment tri-
A method for low-cost production sintering deposit, is applicable to iron-smelter, utilizes blue charcoal end to fire as sinteringMaterial, the sulfur content at blue charcoal end is for being less than 0.5. Then by blue charcoal end with breeze according to the ratio of mass ratio 20:80Example is mixed, and under the condition of suitable granularity, sends into first sintering system; Again by blue charcoal end with breeze according to matterAmount is mixed than the ratio of 30:70, and under the condition of suitable granularity, secondary is sent into sintering system; Finally by orchidMix according to the ratio of mass ratio 30:70 with breeze at charcoal end, and under the condition of suitable granularity, last is sent into burningClone system; The gross mass of sending into for three times equates.
In above three embodiment, the granularity at blue charcoal end is ± 5mm; Volatile matter is less than 8%; Sulfur content is littleIn 0.5%.
Further the present invention program is carried out to analysis of experiments:
1. the index request of sintering fuel is in table 2:
Table 2 sintering fuel index request
| Project | (ten thousand t) for annual requirement | Fixed carbon (%) | Ash content (%) | Volatile matter (%) | Moisture content (%) | Sulphur (%) |
| Breeze | 17 | ≥80.0 | ≤15.0 | ≤2.0 | ≤15.0 | ≤0.80 |
| Blue charcoal end | 32 | ≥80.0 | ≤10.0 | ≤8.0 | ≤8.0 | ≤0.50 |
2. fuel is selected
The coal source that reaches the requirement of sintering coal is as table 3:
| Name of material | Moisture content | Ash content (Ad) | Volatile matter (Vdaf) | Fixed carbon (Fcad) | Sulphur |
| Blue charcoal end | 19.2 | 11.84 | 10.06 | 75.58 | 0.36 |
| Breeze | 15.77 | 14.03 | 2.11 | 83.75 | 0.83 |
Above blue charcoal end, breeze are available fuel, and wherein blue charcoal end is without fragmentation.
3. volatile matter
From table 2 and table 3, the content of ashes of blue charcoal end and breeze all meets the index of sintering fuel to be wantedAsk, moisture is all higher, and the volatile matter at blue charcoal end is higher, need reduce by the method for coal blending.
4. fixed carbon
The fixed carbon at blue charcoal end is lower, and the fixed carbon content of breeze is higher, and therefore the two is by suitableProportioning can meet the index request of sintering fuel.
5. sulfur content
The sulfur content at blue charcoal end meets sintering fuel requirement, and the sulfur content of breeze is higher, and therefore the two is logicalCross the index request that suitable proportioning can meet sintering fuel.
Embodiment tetra-
24 days-December 28 November in 2012, sintering plant was stage by stage to blue charcoal end: breeze (anthracite)Carry out inside tackling key problem test with addition of, existing being summarized as follows after enforcement:
One, test is with addition of the time
Two, test results and analysis (taking November SINTERING PRODUCTION be analyzed as benchmark):
1, with addition of the impact of blue charcoal foot couple Sinter Tumber Index and granularmetric composition:
Can find out from upper table, blue charcoal end proportioning is between 40%-60% time, Sinter Tumber Index and granularityForm basicly stable, uninfluenced.
2, the impact with addition of blue charcoal, sintering solid fuel being consumed
1. sintering solid fuel quality index and calorific capacity
2. with addition of the impact of blue charcoal foot couple sintering burnup
From upper table data, can find out, along with the increase of blue charcoal end proportioning, sintering solid fuel consumption andThe required caloric value in ton ore deposit is the trend rising gradually. In the three phases carrying out in test, ton sintering deposit instituteNeed caloric value compared with raising respectively 1.0726 times, 1.0868 times, 1.1043 times November, on average raise 1.0961Doubly.
In sum:
1,, when blue charcoal end proportioning is between 40%-60%, sinter quality is uninfluenced.
2, while using blue charcoal end proportioning between 40%-60%, along with the increase sintering of blue charcoal end proportioning is solidThe required caloric value of fluid fuel consumption and ton ore deposit is the trend rising gradually. While carrying out the evaluation of fuel cost performance,Calorific value of fuel is pressed actual calorific capacity divided by 1.0961 calculating.
Claims (4)
1. a method for low-cost production sintering deposit, is characterized in that, by blue charcoal end with breeze according to matterAmount is mixed as sintering fuel than the ratio of 20:80 or 40:60, directly sends into sintering system; Or:
Blue charcoal end is mixed according to the ratio of mass ratio 20:80 with breeze, allocate first sintering system into; AgainBlue charcoal is mixed according to the ratio of mass ratio 30:70 with breeze, and secondary is allocated sintering system into; Finally by orchidMix according to the ratio of mass ratio 40:60 with breeze at charcoal end, and last is allocated sintering system into; Allocate into for three timesGross mass equates.
2. the method for low-cost production sintering deposit according to claim 1, is characterized in that described orchidThe granularity condition of charcoal end and breeze is for being less than 5mm.
3. the method for low-cost production sintering deposit according to claim 1, is characterized in that described orchidThe sulfur content of charcoal is less than 0.5%.
4. the method for low-cost production sintering deposit according to claim 1, is characterized in that described orchidThe volatile matter of charcoal is less than 8%.
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| CN201610059068.6A CN105603180A (en) | 2016-01-28 | 2016-01-28 | Method for producing sinter at low cost |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108754131A (en) * | 2018-06-14 | 2018-11-06 | 鞍钢股份有限公司 | A kind of sintering production method of optimization fuel collocation |
| CN112063781A (en) * | 2019-06-10 | 2020-12-11 | 上海梅山钢铁股份有限公司 | Coke powder-containing mixed fuel for blast furnace coal injection and preparation method thereof |
| CN114507553A (en) * | 2020-11-17 | 2022-05-17 | 上海梅山钢铁股份有限公司 | Mixed fuel with high coal-coke replacement ratio for blast furnace injection and preparation method thereof |
| CN115197726A (en) * | 2022-07-11 | 2022-10-18 | 上海宝越耐火材料有限公司 | Preparation method of semi coke for iron making |
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| CN102827972A (en) * | 2012-09-05 | 2012-12-19 | 西安建筑科技大学 | Blast furnace spray-blow coal technology using semi-coke of iron works |
| CN103667686A (en) * | 2013-12-31 | 2014-03-26 | 四川德胜集团钒钛有限公司 | Sintering mixture and application thereof |
| CN105018662A (en) * | 2015-08-04 | 2015-11-04 | 北京科技大学 | Blast furnace production method capable of replacing nut coke with semi coke |
| CN105039684A (en) * | 2015-08-04 | 2015-11-11 | 北京科技大学 | Method for using powdery semicoke as sintering fuel |
-
2016
- 2016-01-28 CN CN201610059068.6A patent/CN105603180A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827972A (en) * | 2012-09-05 | 2012-12-19 | 西安建筑科技大学 | Blast furnace spray-blow coal technology using semi-coke of iron works |
| CN103667686A (en) * | 2013-12-31 | 2014-03-26 | 四川德胜集团钒钛有限公司 | Sintering mixture and application thereof |
| CN105018662A (en) * | 2015-08-04 | 2015-11-04 | 北京科技大学 | Blast furnace production method capable of replacing nut coke with semi coke |
| CN105039684A (en) * | 2015-08-04 | 2015-11-11 | 北京科技大学 | Method for using powdery semicoke as sintering fuel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108754131A (en) * | 2018-06-14 | 2018-11-06 | 鞍钢股份有限公司 | A kind of sintering production method of optimization fuel collocation |
| CN108754131B (en) * | 2018-06-14 | 2020-02-18 | 鞍钢股份有限公司 | Sintering production method for optimizing fuel matching |
| CN112063781A (en) * | 2019-06-10 | 2020-12-11 | 上海梅山钢铁股份有限公司 | Coke powder-containing mixed fuel for blast furnace coal injection and preparation method thereof |
| CN114507553A (en) * | 2020-11-17 | 2022-05-17 | 上海梅山钢铁股份有限公司 | Mixed fuel with high coal-coke replacement ratio for blast furnace injection and preparation method thereof |
| CN115197726A (en) * | 2022-07-11 | 2022-10-18 | 上海宝越耐火材料有限公司 | Preparation method of semi coke for iron making |
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Application publication date: 20160525 |