CN106811254A - Mixed injection coal dust - Google Patents
Mixed injection coal dust Download PDFInfo
- Publication number
- CN106811254A CN106811254A CN201611173433.2A CN201611173433A CN106811254A CN 106811254 A CN106811254 A CN 106811254A CN 201611173433 A CN201611173433 A CN 201611173433A CN 106811254 A CN106811254 A CN 106811254A
- Authority
- CN
- China
- Prior art keywords
- coal
- mixed
- anthracite
- coke oven
- blast furnace
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
- C10L5/366—Powders
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
Abstract
The present invention relates to field of iron and steel smelting, more particularly to a kind of pulverized coal injection in blast furnace.The pulverized coal injection in blast furnace that the present invention is provided includes：Removing dust of coke oven, anthracite and bituminous coal；The weight ratio of the removing dust of coke oven, anthracite and bituminous coal is (5~20):(35~50):(38~45).The pulverized coal injection in blast furnace is that removing dust of coke oven is mixed to get with anthracite, bituminous coal, meets blast furnace blowing requirement, reduces the explosivity of mixed coal powder, improves the combustion rate of mixed coal powder, while reducing injection cost and pig iron cost.
Description
Technical field
The present invention relates to field of metallurgy, more particularly to a kind of mixed injection coal dust.
Background technology
The technical process that metallic iron is extract from iron-bearing mineral (the predominantly oxide of iron), mainly there is blast furnace
Method, direct-reduction process, smelting reduction process, plasma method.Wherein, blast furnace process application is relatively broad.In recent years, with domestic steel
The continuous progress of industry, and the market demand continuous expansion, how to reduce ironmaking cost and improve industrial safety
Property, increasingly paid close attention to by those skilled in the art.
The content of the invention
In view of this, the present invention provides a kind of mixed injection coal dust.
The application provides a kind of mixed injection coal dust, and it includes：Removing dust of coke oven, anthracite, bituminous coal；The coke oven dust
The weight ratio of ash, anthracite and bituminous coal is (5~20):(35~50):(38~45).
Further, the weight ratio of the removing dust of coke oven, anthracite and bituminous coal is (10~20):(40~50):40.
Further, the granularity of the mixed injection coal dust is not more than 80 mesh, wherein -200 mesh grades account for 65%.
The present invention provides a kind of mixed injection coal dust, and it is that removing dust of coke oven is mixed to get with anthracite, bituminous coal, meets
Blast furnace blowing requirement, reduces the explosivity of mixed coal powder, the combustion rate of mixed coal powder is improve, while reducing injection cost
And pig iron cost.
Specific embodiment
The invention discloses a kind of mixed injection coal dust, those skilled in the art can use for reference present disclosure, be suitably modified
Technological parameter is realized.In particular, all similar replacements and change be for a person skilled in the art it is aobvious and
It is clear to, they are considered as being included in the present invention.The method of the present invention and application are retouched by preferred embodiment
State, related personnel can substantially change not departing from present invention, spirit and scope to method described herein and application
It is dynamic or suitably change with combining and realize and apply the technology of the present invention.
Present inventor considers：Removing dust of coke oven is the dust of generation after the dedusting of coking coke dry quenching furnace first and second.Its
Moisture is relatively low, and ash content and volatilization grade close with dry coke quenching charcoal.Property is approximate with coke powder, and its volatile matter is general in 1-2% levels,
Can be regarded as anthracite.Removing dust of coke oven fixes that carbon content is higher, the bituminous coal that is used higher than current blast furnace blowing and smokeless
Coal, caloric value is approached with pulverized coal injection in blast furnace.If blast furnace blowing removing dust of coke oven, first can be allowed to be fully utilized,
The wasting of resources is avoided, part anthracite second can be substituted, blast furnace blowing cost is advantageously reduced.If making full use of this part
Resource, can reduce ironmaking system pig iron cost.
Based on above-mentioned design, the present invention provides a kind of mixed injection coal dust, and it includes：Removing dust of coke oven, anthracite, cigarette
Coal；Wherein, the weight ratio of the removing dust of coke oven, anthracite and bituminous coal is (5~20):(35~50):(38~45).
Preferably, the weight ratio of the removing dust of coke oven, anthracite and bituminous coal is (10~20):(40~50):40.
Further, the granularity of the mixed injection coal dust is not more than 80 mesh, wherein -200 mesh grades account for 65%.
The advantage of mixed injection coal dust that the present invention is provided is：Removing dust of coke oven is mixed to get with anthracite, bituminous coal,
Meet blast furnace blowing requirement, reduce the explosivity of mixed coal powder, improve the combustion rate of mixed coal powder, while reducing injection
Cost and pig iron cost.
With reference to embodiment, the present invention is expanded on further：
Embodiment 1
Removing dust of coke oven, anthracite, bituminous coal are made smaller than the fine coal of 80 mesh by coal pulverizer, wherein -200 mesh are accounted for
65%.Dry cooled coke powder weight accounts for the 10% of mixed coal powder weight in mixed coal powder, and anthracite weight accounts for mixed coal powder weight
50%, bituminous coal weight accounts for the 40% of mixed coal powder weight.
Embodiment 2
Removing dust of coke oven, anthracite, bituminous coal are made smaller than the fine coal of 80 mesh by coal pulverizer, wherein -200 mesh are accounted for
65%.Removing dust of coke oven weight accounts for the 20% of mixed coal powder weight in mixed coal powder, and anthracite weight accounts for mixed coal powder weight
40%, bituminous coal weight accounts for the 40% of mixed coal powder weight.
Comparative example
Anthracite account for 60% and bituminous coal account for 40% mixed coal powder.
The mixed coal powder prepared using above-described embodiment 1 and 2 is tested, and mixed coal powder returned fire length is respectively less than
400mm, is weak explosive coal.
The mixed coal powder of embodiment 1 and 2, and comparative example 1 is carried out into combustion rate experiment, it is as a result as follows：
The combustion rate of embodiment 1 and embodiment 2 is higher than comparative example 2-3 percentage points.
Can be drawn by above example：The mixed coal powder that the present invention is provided disclosure satisfy that blast furnace blowing requirement, reduce
The explosivity of mixed coal powder, improves the combustion rate of mixed coal powder, while reducing injection cost and pig iron cost.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of mixed injection coal dust, it is characterised in that including：Removing dust of coke oven, anthracite, bituminous coal；The removing dust of coke oven,
The weight ratio of anthracite and bituminous coal is (5~20):(35~50):(38~45).
2. mixed injection coal dust according to claim 1, it is characterised in that the removing dust of coke oven, anthracite and bituminous coal
Weight ratio be (10~20):(40~50):40.
3. mixed injection coal dust according to claim 1, it is characterised in that the granularity of the mixed injection coal dust is not more than
80 mesh, wherein -200 mesh grades account for 65%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173433.2A CN106811254A (en) | 2016-12-19 | 2016-12-19 | Mixed injection coal dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173433.2A CN106811254A (en) | 2016-12-19 | 2016-12-19 | Mixed injection coal dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106811254A true CN106811254A (en) | 2017-06-09 |
Family
ID=59110184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611173433.2A Pending CN106811254A (en) | 2016-12-19 | 2016-12-19 | Mixed injection coal dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106811254A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108676945A (en) * | 2018-05-24 | 2018-10-19 | 东北大学 | A kind of volatile method of inhibition pulverized coal injection in blast furnace and metallurgical dedusting ash |
| CN108707708A (en) * | 2018-06-19 | 2018-10-26 | 东北大学 | A kind of additive and its application method improving blast furnace injection coal powder mobility |
| CN109439819A (en) * | 2018-11-06 | 2019-03-08 | 包头钢铁（集团）有限责任公司 | A kind of blast furnace blowing mixed coal powder |
| CN112593031A (en) * | 2020-12-11 | 2021-04-02 | 四川德胜集团钒钛有限公司 | Mixed fuel for blast furnace injection and injection method thereof |
| CN114622093A (en) * | 2022-03-14 | 2022-06-14 | 包头钢铁（集团）有限责任公司 | Method for efficiently recycling dry quenching dust |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2179885A1 (en) * | 1994-01-21 | 1995-07-27 | George W. Ford, Jr. | Utilizing discarded carbon |
| CN102408931A (en) * | 2011-09-30 | 2012-04-11 | 内蒙古包钢钢联股份有限公司 | Mixed fuel for blast furnace injection |
| CN102746915A (en) * | 2012-07-31 | 2012-10-24 | 内蒙古包钢钢联股份有限公司 | Mixed pulverized coal suitable for blast furnace spraying and blowing |
| CN106497622A (en) * | 2016-11-09 | 2017-03-15 | 内蒙古包钢钢联股份有限公司 | A kind of pulverized coal injection in blast furnace |
-
2016
- 2016-12-19 CN CN201611173433.2A patent/CN106811254A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2179885A1 (en) * | 1994-01-21 | 1995-07-27 | George W. Ford, Jr. | Utilizing discarded carbon |
| CN102408931A (en) * | 2011-09-30 | 2012-04-11 | 内蒙古包钢钢联股份有限公司 | Mixed fuel for blast furnace injection |
| CN102746915A (en) * | 2012-07-31 | 2012-10-24 | 内蒙古包钢钢联股份有限公司 | Mixed pulverized coal suitable for blast furnace spraying and blowing |
| CN106497622A (en) * | 2016-11-09 | 2017-03-15 | 内蒙古包钢钢联股份有限公司 | A kind of pulverized coal injection in blast furnace |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108676945A (en) * | 2018-05-24 | 2018-10-19 | 东北大学 | A kind of volatile method of inhibition pulverized coal injection in blast furnace and metallurgical dedusting ash |
| CN108707708A (en) * | 2018-06-19 | 2018-10-26 | 东北大学 | A kind of additive and its application method improving blast furnace injection coal powder mobility |
| CN109439819A (en) * | 2018-11-06 | 2019-03-08 | 包头钢铁（集团）有限责任公司 | A kind of blast furnace blowing mixed coal powder |
| CN112593031A (en) * | 2020-12-11 | 2021-04-02 | 四川德胜集团钒钛有限公司 | Mixed fuel for blast furnace injection and injection method thereof |
| CN114622093A (en) * | 2022-03-14 | 2022-06-14 | 包头钢铁（集团）有限责任公司 | Method for efficiently recycling dry quenching dust |
| CN114622093B (en) * | 2022-03-14 | 2024-01-30 | 包头钢铁（集团）有限责任公司 | Method for efficiently recycling dry quenching dust |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106811254A (en) | Mixed injection coal dust | |
| CN102424876B (en) | Non-blast-furnace iron making process for directly reducing vanadium titanomagnetite through gas-based shaft furnace | |
| CN106497622A (en) | A kind of pulverized coal injection in blast furnace | |
| WO2013152487A1 (en) | Laterite-nickel ore processing method for efficiently recovering nickel resources | |
| CN102746915A (en) | Mixed pulverized coal suitable for blast furnace spraying and blowing | |
| US9617609B2 (en) | Method for preparing blast furnace blow-in coal | |
| CN104212508A (en) | Blast furnace blowing mixed fuel and blowing method thereof | |
| CN102408931A (en) | Mixed fuel for blast furnace injection | |
| Thaler et al. | Integration of the blast furnace route and the FINEX®‐process for low CO2 hot metal production | |
| CN104878143A (en) | Blast furnace smelting method of vanadium titano-magnetite | |
| CN114214474A (en) | Iron-smelting method by blast furnace blowing Europe and metallurgy furnace gas | |
| CN109294654A (en) | A kind of blast furnace blowing fuel and preparation method | |
| CN108315083A (en) | A kind of mixed fuel for blast furnace injection and its blowing method | |
| CN113122664A (en) | Blast furnace injection coal and safe and efficient injection method thereof | |
| CN117106995A (en) | Blast furnace smelting method for blowing vanadium titano-magnetite and lignite | |
| CN103255247B (en) | A kind of blast furnace injection coal blending method | |
| CN103468837A (en) | Safe method applicable to shaft furnace soft coal preparation and jetting | |
| KR20150020247A (en) | Blast-furnace blowing coal and method for producing same | |
| CN106755667A (en) | V-bearing titanomagnetite smelting coal dust additive and its application | |
| CN104745753A (en) | Coal blending method of blast-furnace-injected pulverized coal and blast-furnace-injected pulverized coal | |
| CN108034785A (en) | A kind of Refractory iron ore prereduction-restore the method for producing molten iron | |
| CN104313212A (en) | Molten iron heat preservation agent, preparation method of molten iron heat preservation agent and method for preserving temperature of molten iron | |
| CN104087692B (en) | A kind of blast-furnace coal-injection combustion improver and using method thereof | |
| CN104419824A (en) | Material distribution method for producing pre-reduced agglomerate | |
| Sawada et al. | Overview of market for direct reduced iron |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170609 |