CN106011340B - A kind of coal blending component of pulverized coal injection into blast furna - Google Patents
A kind of coal blending component of pulverized coal injection into blast furna Download PDFInfo
- Publication number
- CN106011340B CN106011340B CN201610640833.3A CN201610640833A CN106011340B CN 106011340 B CN106011340 B CN 106011340B CN 201610640833 A CN201610640833 A CN 201610640833A CN 106011340 B CN106011340 B CN 106011340B
- Authority
- CN
- China
- Prior art keywords
- coal
- coal blending
- anthracite
- parts
- blending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention discloses a kind of coal blending component of pulverized coal injection into blast furna, including anthracite, it is characterized in that, the pulverized coal injection into blast furna further includes coal blending a, coal blending b, coal blending c one such or a variety of, the ash content of the coal blending a is 11~12%, volatilization is divided into 12~13%, contains fixed carbon 70~76%, sulfur-bearing 1~2%；The ash content of coal blending b is 7~8%, and volatilization is divided into 20~26%, contains fixed carbon 60~68%, sulfur-bearing 0.4~0.6%；The ash content of coal blending c is 12~14%, and volatilization is divided into 14~16%, contains fixed carbon 68~70%, sulfur-bearing 0.3~0.5%.The coal blending component of pulverized coal injection into blast furna of the present invention is blown scheme using the Mixture Density Networks of anthracite and bituminous coal, uses the coal dust of different qualities with, reduces production cost, increases economic efficiency.
Description
Technical field
The present invention relates in metallurgical iron industry pulverized coal injection into blast furna technical field more particularly to a kind of pulverized coal injection into blast furna
Coal blending component.
Background technology
Blast furnace blowing product of coal is since obtaining the half a century of industrialness, large scale application, with steel production capacity
Increasingly increase and blast-furnace coal powder injection key technology be constantly progressive and it is perfect, the market demand is gradually expanded, especially in recent years
Increasingly to carry in the status of smelting iron and steel process procedure with increasingly scarcity, the pulverized coal injection into blast furna of Chinese high-quality caking coal resource
Height is being saved steel industry smelting cost etc., is being played an increasingly important role.Pulverized coal injection into blast furna is as metallurgical
Purposes and the original intention that comes out determines such trend：(1) with coal dust partial alternative smelter coke, blast furnace ironmaking coke ratio is made to drop
Low, pig iron cost declines；(2) adjustment working of a furnace thermal system and stable operation；(3) coal dust being blown gasification, and combustion before blast-furnace tuyere
Theoretical combustion degree is reduced, to maintain T reasons, needs to compensate, this is just that blast furnace creates condition using high wind and oxygen-enriched air blast；(4)
Coal injection substitutes part of coke, on the one hand can save coking investment, build coke oven less, reduce air pollution caused by coking；Separately
On the one hand it can alleviate the situation of coking coal supply and demand anxiety significantly.
Blast-furnace coal powder injection technology is typically all to do injected fuel using anthracite, because injection substitute for coke is mainly used
To be fixation carbon in coal, 100% has just catered to such demand and idea using anthracite injection, still,
Since the finiteness and its raw coal reserves of anthracite supply are constantly reduced, the market price also gradually rises, and pig iron cost is increasingly
Height can not meet the demand of enterprise's production.
Invention content
The technical problems to be solved by the invention and the technical assignment of proposition are improved to the prior art, and one kind is provided
The coal blending component of pulverized coal injection into blast furna solves pulverized coal injection into blast furna in current technology and uses pure anthracite, and pig iron cost is high, economic benefit
The problem of difference.
In order to solve the above technical problems, the technical scheme is that：
A kind of coal blending component of pulverized coal injection into blast furna, including anthracite, which is characterized in that the pulverized coal injection into blast furna further includes
Coal blending a, coal blending b, coal blending c are one such or a variety of, and the ash content of the coal blending a is 11~12%, and volatilization is divided into 12~13%,
Containing fixed carbon 70~76%, sulfur-bearing 1~2%；The ash content of coal blending b is 7~8%, and volatilization is divided into 20~26%, containing fixed carbon 60~
68%, sulfur-bearing 0.4~0.6%；The ash content of coal blending c is 12~14%, and volatilization is divided into 14~16%, contains fixed carbon 68~70%,
Sulfur-bearing 0.3~0.5%.The coal blending component of pulverized coal injection into blast furna of the present invention uses the Mixture Density Networks injection side of anthracite and bituminous coal
Case, anthracitic calorific capacity is high, price is high, and the calorific capacity of bituminous coal is low, price is low, by two on the basis of ensureing enough calorific capacitys
Person is used in mixed way, and can effectively reduce the use cost of pulverized coal injection into blast furna, to reduce pig iron cost, increases economic efficiency.It crosses
Special equipment sprays into blast furnace from air port, to replace part of coke in blast furnace burden, improves blast furnace operating, improves pig iron yield,
Blast furnace ironmaking is using metallurgical coke as fuel and reducing agent, and injected fuel is converted into CO and H at a high temperature of tuyere area2, generation
For the part of coke of air port burning.
Further, the anthracitic ash content is 10~14%, and volatilization is divided into 7~10%, contains fixed carbon 76~80%,
Sulfur-bearing 0.6~0.7%.Ash content is remaining solid residue after coal completely burned, and ash content is incombustible in coal
Minerals, minerals burning ashing when to absorb heat, a large amount of deslagginves will take away heat, thus ash content is higher, coal burning
The thermal efficiency it is lower；Ash content is more, and the lime-ash that coal burning generates is more, and the flying dust of discharge is also more.Volatile matter it be by each
The mixed gas of the compounds composition such as kind hydrocarbon, hydrogen, carbon monoxide, the low coal of degree of coalification, volatile matter are more.Nothing
Cigarette pit ash and volatile matter are relatively low, and combustion thermal efficiency is high, and sulfur content is relatively low, avoid generating blast-melted quality bad
It influences.
Further, the pulverized coal injection into blast furna is made of anthracite, coal blending a and coal blending c mixing, anthracite, coal blending a and
The proportioning content of coal blending c according to quality parts ratio be 25~35 parts of anthracite, 30~40 parts of 30~40 parts of coal blending a, coal blending c,
Higher calorific capacity is ensured while cost is reduced, meets the needs of production.
Further, the proportioning content of the anthracite, coal blending a and coal blending c is anthracite 30 according to quality parts ratio
Part, 35 parts of 35 parts of coal blending a, coal blending c.
Further, the pulverized coal injection into blast furna is made of anthracite and coal blending b mixing, anthracite, coal blending b proportioning contain
Amount is 70~85 parts of anthracite, 20~30 parts of coal blending b according to quality parts ratio.
Further, the proportioning content of the anthracite, coal blending b are 78 parts of anthracite, coal blending b according to quality parts ratio
22 parts.
Further, the proportioning content of the anthracite, coal blending b are 70 parts of anthracite, coal blending b according to quality parts ratio
30 parts.
Compared with prior art, the invention has the advantages that：
The coal blending component of pulverized coal injection into blast furna of the present invention is blown scheme using the Mixture Density Networks of anthracite and bituminous coal, uses with
The coal dust of different qualities, ensureing has golf calorific value, meets the needs of normally producing, and is promoting the blast furnace high wind-warm syndrome of realization and oxygen-enriched
Air blast in the case of reducing coke ratio, reduces production cost, increases economic efficiency.
Specific implementation mode
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the scope of protection of the invention.
A kind of coal blending component of pulverized coal injection into blast furna disclosed by the embodiments of the present invention is sprayed using the Mixture Density Networks of anthracite and bituminous coal
Scheme is blown, ensureing has golf calorific value, in the case where promoting blast furnace to realize high wind-warm syndrome and oxygen-enriched air blast, reducing coke ratio, reduces
Production cost is increased economic efficiency.
A kind of coal blending component of pulverized coal injection into blast furna, with the Mixture Density Networks of anthracite and bituminous coal be blown scheme, if by anthracite with
Dry kind of different bituminous coal is used in mixed way, and bituminous coal includes mainly coal blending a, coal blending b, coal blending c, coal blending d.As shown in Table 1 is each
The physical and chemical index and price of kind coal, A represent ash content, and V represents volatile matter, CGuFixed carbon is represented, S is sulphur, and calorific capacity therein is
Theoretical calculation data, and actual measurement calorific capacity have deviation, coal blending d comparisons and coal blending b, and cost performance gap is too big, has no value for use；
Coal blending a, coal blending d, sulfur content are high, have an impact to blast-melted quality, and coal blending c sulfur contents are low, ash content and higher price, can be with
It is used as coal blending and in lower ratio；Coal blending b is the best coal resources of cost performance, and price is low, ash content is low, sulfur-bearing is suitable
In, calorific value it is high, optimum is applied to blast furnace blowing use.
Table one
| Project | A (%) | V (%) | CGu(%) | S (%) | Calorific capacity (kilocalorie) | Price (yuan/ton) |
| Coal blending a | 11~12 | 12~13 | 70~76 | 1~2 | 7247 | 630 |
| Coal blending b | 7~8 | 20~26 | 60~68 | 0.4~0.6 | 7452 | 650 |
| Coal blending c | 12~14 | 14~16 | 68~70 | 0.3~0.5 | 7019 | 700 |
| Coal blending d | 8~10 | 20~25 | 68~74 | 0.7~1 | 7380 | 690 |
| Anthracite | 10~14 | 7~10 | 76~80 | 0.6~0.7 | 7351.8 | 730 |
The present invention is by anthracite and coal blending a, coal blending b, coal blending c are one such or it is a variety of be used in mixed way, ensureing
Calorific capacity effectively reduces the use cost of pulverized coal injection into blast furna under the premise of meeting production requirement, reduce pig iron cost, improves economical
Benefit.
Embodiment one
Coal blending a, coal blending c and anthracite collocation use, and match ratio is according to quality parts ratio：35 parts of coal blending a：Coal blending c
35 parts：30 parts of anthracite, more current anthracite injection can reduce by 45.5 yuan/ton of purchase cost, be shown in Table two.
Table two
| Project | A (%) | V (%) | CGu(%) | S (%) | Calorific capacity (kilocalorie) | Price (yuan/ton) |
| Coal blending a | 11.78 | 12.11 | 74.36 | 1.3 | 7247 | 630 |
| Coal blending c | 13.65 | 15.02 | 69.67 | 0.27 | 7019 | 700 |
| Anthracite | 12.8 | 8.1 | 77.7 | 0.63 | 7351.8 | 730 |
| Mixed coal powder injection | 12.74 | 11.93 | 73.72 | 0.74 | 7198.41 | 684.5 |
Embodiment two
Coal blending b is used with the collocation of smokeless injection coal, and match ratio is according to quality parts ratio：22 parts of coal blending b：Anthracite
78 parts, 17.6 yuan/ton of purchase cost can be reduced compared with anthracite injection, is shown in Table three.
Table three
| Project | A (%) | V (%) | CGu(%) | S (%) | Calorific capacity (kilocalorie) | Price (yuan/ton) |
| Anthracite | 12.8 | 8.1 | 77.7 | 0.63 | 7351.8 | 730 |
| Coal blending b | 7.12 | 25.49 | 65.88 | 0.54 | 7452 | 650 |
| Mixed coal powder injection | 11.55 | 11.93 | 75.10 | 0.61 | 7374 | 712.4 |
Embodiment three
Coal blending b is used with the collocation of smokeless injection coal, and match ratio is according to quality parts ratio：30 parts of coal blending b：Anthracite
70 parts, more current anthracite injection can reduce by 56 yuan/ton of purchase cost, be shown in Table four.
Table four
| Project | A (%) | V (%) | CGu(%) | S (%) | Calorific capacity (kilocalorie) | To the price at factory (yuan/ton) |
| Anthracite | 12.8 | 8.1 | 77.7 | 0.63 | 7351.8 | 730 |
| Coal blending b | 7.12 | 25.49 | 65.88 | 0.54 | 7452 | 650 |
| Mixture Density Networks | 11.10 | 13.32 | 74.15 | 0.60 | 7382 | 674 |
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (4)
1. a kind of coal blending component of pulverized coal injection into blast furna, including anthracite, which is characterized in that the pulverized coal injection into blast furna is by smokeless
Coal, coal blending a and coal blending c mixing composition, the proportioning content of anthracite, coal blending a and coal blending c are anthracite 25 according to quality parts ratio
~35 parts, 30~40 parts of 30~40 parts of coal blending a, coal blending c；Or the pulverized coal injection into blast furna is mixed by anthracite and coal blending b
Composition, anthracite, coal blending b proportioning content according to quality parts ratio be 70~85 parts of anthracite, 20~30 parts of coal blending b；It is described
Anthracitic ash content is 10~14%, and volatilization is divided into 7~10%, contains fixed carbon 76~80%, sulfur-bearing 0.6~0.7%；It is described to match
The ash content of coal a is 11~12%, and volatilization is divided into 12~13%, contains fixed carbon 70~76%, sulfur-bearing 1~2%；The ash content of coal blending b
It is 7~8%, volatilization is divided into 20~26%, contains fixed carbon 60~68%, sulfur-bearing 0.4~0.6%；The ash content of coal blending c be 12~
14%, volatilization is divided into 14~16%, contains fixed carbon 68~70%, sulfur-bearing 0.3~0.5%.
2. the coal blending component of pulverized coal injection into blast furna according to claim 1, which is characterized in that the anthracite, coal blending a and
The proportioning content of coal blending c is 30 parts of anthracite, 35 parts of 35 parts of coal blending a, coal blending c according to quality parts ratio.
3. the coal blending component of pulverized coal injection into blast furna according to claim 1, which is characterized in that the anthracite, coal blending b
It is 78 parts of anthracite, 22 parts of coal blending b that content, which is matched, according to quality parts ratio.
4. the coal blending component of pulverized coal injection into blast furna according to claim 1, which is characterized in that the anthracite, coal blending b
It is 70 parts of anthracite, 30 parts of coal blending b that content, which is matched, according to quality parts ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610640833.3A CN106011340B (en) | 2016-08-08 | 2016-08-08 | A kind of coal blending component of pulverized coal injection into blast furna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610640833.3A CN106011340B (en) | 2016-08-08 | 2016-08-08 | A kind of coal blending component of pulverized coal injection into blast furna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106011340A CN106011340A (en) | 2016-10-12 |
| CN106011340B true CN106011340B (en) | 2018-10-30 |
Family
ID=57133844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610640833.3A Active CN106011340B (en) | 2016-08-08 | 2016-08-08 | A kind of coal blending component of pulverized coal injection into blast furna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106011340B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112538553B (en) * | 2020-11-23 | 2022-03-22 | 福建三宝钢铁有限公司 | Coal blending method for blast furnace injection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279949A (en) * | 2011-07-28 | 2011-12-14 | 首钢总公司 | Optimization method of blast furnace injection coal blending scheme selection |
| 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 |
| CN103255247A (en) * | 2013-05-22 | 2013-08-21 | 南京钢铁股份有限公司 | Coal blending method for blast furnace coal injection |
| CN105755191A (en) * | 2016-03-30 | 2016-07-13 | 北京科技大学 | Optimized coal blending method for blast furnace blown lignite |
-
2016
- 2016-08-08 CN CN201610640833.3A patent/CN106011340B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279949A (en) * | 2011-07-28 | 2011-12-14 | 首钢总公司 | Optimization method of blast furnace injection coal blending scheme selection |
| 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 |
| CN103255247A (en) * | 2013-05-22 | 2013-08-21 | 南京钢铁股份有限公司 | Coal blending method for blast furnace coal injection |
| CN105755191A (en) * | 2016-03-30 | 2016-07-13 | 北京科技大学 | Optimized coal blending method for blast furnace blown lignite |
Non-Patent Citations (2)
| Title |
|---|
| 马超等.湘钢2500m³高炉煤种的选择.《过程工程学报》.2012,第12卷(第1期),第81-86页. * |
| 高炉喷吹用煤的配煤及使用兰炭的试验;杜刚等;《钢铁钒钛》;20130228;第34卷(第1期);第64-68页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106011340A (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10106863B2 (en) | Method for operation of blast furnace | |
| CN104131122B (en) | A kind of iron-smelting process based on winding-up coal gas of high temperature | |
| RU2496884C2 (en) | Method for cast-iron melting with return of blast furnace gas at addition of hydrocarbons | |
| CN104087693A (en) | Low-grade vanadium-titanium magnetite smelting technique | |
| US20150203930A1 (en) | Method for preparing blast furnace blow-in coal | |
| CN107151721B (en) | System and method for producing direct reduced iron by double reforming and conversion of Lurgi gasification gas | |
| CN107993020A (en) | A kind of cost performance evaluation method of blast furnace blowing single grade coal and Mixture Density Networks | |
| CN106011340B (en) | A kind of coal blending component of pulverized coal injection into blast furna | |
| CN108676947A (en) | A kind of mixing coal for blast furnace blowing Powder Particle Size determines method | |
| CN112899423A (en) | Blast furnace smelting furnace charge containing chromium type vanadium titano-magnetite and blast furnace smelting method | |
| CN109294654A (en) | A kind of blast furnace blowing fuel and preparation method | |
| CN105603180A (en) | Method for producing sinter at low cost | |
| CN107446605A (en) | With addition of the coking mixed coal and coke making and coal blending method of reworked material | |
| TWI785506B (en) | Operation method of blast furnace and auxiliary equipment of blast furnace | |
| CN212713623U (en) | Self-generating coal gas circulation non-tail gas emission smelting steel scrap system | |
| JP5862515B2 (en) | Blast furnace operation method using oil palm core shell coal. | |
| KR20130072977A (en) | Apparatus for manufacturing molten iron and method for manufacturing the same | |
| CN105219906B (en) | A kind of combine production method of semi-coke and DRI | |
| JPS63161108A (en) | Molten iron producing apparatus | |
| CN111944545B (en) | Process for integrally preparing formed coke by molding, drying and dry distilling pulverized coal | |
| JP2011190471A (en) | Method for operating blast furnace | |
| TW202129015A (en) | Blast furnace operation method, and blast furnace ancillary facilities | |
| CN115505661A (en) | Method for improving quality of blast furnace iron smelting water of vanadium titano-magnetite | |
| CN115747394A (en) | Coal injection comprehensive regulation and control method based on coal-coke replacement ratio and blast furnace operation | |
| KR20230046067A (en) | Method of controlling a blast furnace operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |