CN1789393A - Catalytic combustion-supporting addictive for blast furnace sprayed coal and its addition method - Google Patents

Catalytic combustion-supporting addictive for blast furnace sprayed coal and its addition method Download PDF

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Publication number
CN1789393A
CN1789393A CN 200510045351 CN200510045351A CN1789393A CN 1789393 A CN1789393 A CN 1789393A CN 200510045351 CN200510045351 CN 200510045351 CN 200510045351 A CN200510045351 A CN 200510045351A CN 1789393 A CN1789393 A CN 1789393A
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coal
addictive
supporting
blast furnace
catalytic combustion
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CN 200510045351
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CN100358983C (en
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邵登山
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Abstract

The invention provides the high furnace catalysis combustion addition agent and addition method, comprising metallic oxide, transition metal chloride, rare-earth metal oxide, alkaline earth oxide, perovskite structure oxide, and using the mechanical mixing technology. The method is highly effective, safe and convenience. And the method reduces the coke ratio, improves the burning velocity, availability of coal powder, and coal-to-coke replacement.

Description

Catalytic combustion-supporting addictive for blast furnace sprayed coal and addition means thereof
Technical field
The present invention relates to technical field of smelting, is a kind of catalytic combustion-supporting addictive for blast furnace sprayed coal and addition means thereof that improves the iron-smelting blast furnace coal-to-coke replacement.
Background technology
At present, all there are various deficiencies in the various catalytic combustion-supporting addictives that use this area, for example: patent CN111263A, adding ignition dope is the 1-20% of raw coal weight, best 2-8%, when addition less than 1% the time, DeGrain; Patent CN02133147.2 contains KMnO in its prescription 4, and KMnO 4Only 248 ℃ of decomposition temperatures have certain hidden danger for pulverized coal preparation system safety.As everyone knows, pulverized coal injection especially blowing bituminous coal is a technology that security requirement is high, and system's oxygen level rising, point of ignition reduction etc. all can bring new potential safety hazard; Ignition dope need be warmed to 200 ℃ among the patent CN02133147.2, reacts 5 hours, and adding method complexity needs specialized apparatus; Modern metallurgical, 2001 (2): the perfect combustion catalyzer of " effect of ignition dope in pulverized coal injection " literary composition report is generally carried on coal bed before the system coal dust as liquid state and is used among the 27-29, add-on is about the 350-600ml/t coal, add-on is big, cost is high, and contains the disadvantageous element K of the blast furnace quality of production, Na, Cl etc.; Patent CN02133147.2, CN90106347.9, CN01138848.x etc. all contain the element of harmful blast furnace qualities of production such as K, Na, Cl.
Summary of the invention
The objective of the invention is, a kind of catalytic combustion-supporting addictive for blast furnace sprayed coal and addition means thereof that improves the iron-smelting blast furnace coal-to-coke replacement is provided, make it have advantage efficient, safe, easy to use, improve the pulverized coal injection ratio, reduced coke ratio, do not contain K, Na, Cl etc. to the deleterious element of blast furnace, it is more abundant that coal dust is contacted with oxygen, coal dust is carried out catalysis, thereby the raising combustionvelocity improves the coal dust effective rate of utilization, improves coal-to-coke replacement.
The present invention is in order to finish goal of the invention, and the technical scheme that provides is: it comprises the oxide compound, rare-earth oxide, the oxide compound of alkaline earth metal, the oxide compound of perovskite structure of metal oxide, transition metal, adopts the mixed technology of machinery formulated.Preferred scheme is: the oxide compound of metal oxide, transition metal oxide, rare-earth oxide, alkaline earth metal, the oxide compound of perovskite structure are: CuO, Fe 3O 4, MnO 2, Co 3O 4, La 2O 3, CeO 2, CaO, MgO, Al 2O 3, H 3BO 3, LaMnO 3Preferred scheme is: its weight percent proportioning is CuO 2～7%, Fe 3O 43～9%, MnO 210～20%, Co 3O 42～6%, La 2O 34～10%, CeO 26～12%, CaO 10～20%, MgO 10～20%, Al 2O 38～15%, H 3BO 36～10%, LaMnO 32～8%.
The further preferred version of the present invention is: CuO, Fe 3O 4, MnO 2, CaO, MgO, Al 2O 3, H 3BO 3Granularity at 75um-95um, Co 3O 4, La 2O 3, CeO 2, LaMnO 3Granularity at 30um-60um.A more step preferred version of the present invention is: its weight percent proportioning is CuO 4.5%, Fe 3O 46%, MnO 215%, Co 3O 44%, La 2O 37%, CeO 29%, CaO 15%, MgO 15%, Al 2O 311.5%, H 3BO 38%, LaMnO 36%.The addition means of catalytic combustion-supporting addictive for blast furnace sprayed coal, adding powder product of the present invention to raw coal before raw coal enters grinding machine carries on the belt of coal pulverizer, addition is the 0.1-0.9% of raw coal weight, in grinding machine, dry, grind with coal dust, enter blast-furnace tuyere through convey coal pipe and realize coal powder injection.Preferably, add powder product of the present invention to raw coal before raw coal enters grinding machine and carry on the belt of coal pulverizer, addition is the 0.3-0.7% of raw coal weight.
The present invention is worked into the granularity that needs with various raw materials, and employing equipment is mixed evenly, packing.
The present invention carries out the positive result that large-scale industry test draws at 1750 meters blast furnaces: have advantage efficient, safe, easy to use, improve the pulverized coal injection ratio, reduced coke ratio, do not contain K, Na, Cl etc. to the deleterious element of blast furnace, it is more abundant that coal dust is contacted with oxygen, coal dust is carried out catalysis, thereby improved combustionvelocity by a relatively large margin, coal dust effective rate of utilization and burnt substitution rate have been improved, pulverized coal injection is than the average 15kg/t that increases, coke ratio decline 20kg/t, capacity factor of a blast furnace raising 0.72% etc.
Embodiment
The embodiment of the invention is to test by investigation test on the 1750M blast furnace and large-scale industry to realize that its implementation condition is: wind-warm syndrome 1154-1168 ℃, and oxygen enrichment percentage 1.85-2.083%.The catalysis burning-rate accelerator composition proportion sees the following form respectively:
Table 1 catalytic combustion-supporting addictive granularity and composition proportion
Title Granularity um Weight percent %
CuO 75 4.5
Fe 3O 4 75 6
MnO 2 75 15
Co 3O 4 38 4
La 2O 3 38 7
CeO 2 38 9
CaO 75 13
MgO 75 12
Al 2O 3 75 11.5
H 3BO 3 75 10
LaMnO 3 38 8
Table 2 catalytic combustion-supporting addictive granularity and composition proportion
Title Granularity um Weight percent %
CuO 75 2
Fe 3O 4 75 3
MnO 2 75 10
Co 3O 4 38 6
La 2O 3 38 10
CeO 2 38 12
CaO 75 20
MgO 75 20
Al 2O 3 75 8
H 3BO 3 75 6
LaMnO 3 38 3
Table 3 catalytic combustion-supporting addictive granularity and composition proportion
Title Granularity um Weight percent %
CuO 75 7
Fe 3O 4 75 9
MnO 2 75 20
Co 3O 4 38 6
La 2O 3 38 10
CeO 2 38 12
CaO 75 10
MgO 75 10
Al 2O 3 75 8
H 3BO 3 75 6
LaMnO 3 38 2
Table 4 catalytic combustion-supporting addictive granularity and composition proportion
Title Granularity um Weight percent %
CuO 75 2
Fe 3O 4 75 3
MnO 2 75 10
Co 3O 4 38 2
La 2O 3 38 4
CeO 2 38 6
CaO 75 20
MgO 75 20
Al 2O 3 75 15
H 3BO 3 75 10
LaMnO 3 38 8
Table 5 catalytic combustion-supporting addictive granularity and composition proportion
Title Granularity um Weight percent %
CuO 75 7
Fe 3O 4 75 9
MnO 2 75 20
Co 3O 4 30 6
La 2O 3 30 10
CeO 2 30 12
CaO 75 10
MgO 75 10
Al 2O 3 75 8
H 3BO 3 75 6
LaMnO 3 30 2
Table 6 catalytic combustion-supporting addictive granularity and composition proportion
Title Granularity um Weight percent %
CuO 95 7
Fe 3O 4 95 9
MnO 2 95 20
Co 3O 4 60 6
La 2O 3 60 10
CeO 2 60 12
CaO 95 10
MgO 95 10
Al 2O 3 95 8
H 3BO 3 95 6
LaMnO 3 60 2
Table 7 catalytic combustion-supporting addictive granularity and composition proportion
Title Granularity um Weight percent %
CuO 80 2
Fe 3O 4 80 3
MnO 2 80 10
Co 3O 4 40 6
La 2O 3 40 10
CeO 2 40 12
CaO 80 20
MgO 80 20
Al 2O 3 80 8
H 3BO 3 80 6
LaMnO 3 40 3
The various raw materials that the foregoing description adopts are worked into granularity requirements of the present invention, adopt known equipment to mix packing and get final product.In use, adding raw coal before raw coal enters grinding machine to carries on the belt of coal pulverizer, addition is the 0.1-0.9% of raw coal weight, preferred 0.3-0.7%, 0.1%, 0.5%, 0.7%, 0.9% all can, in grinding machine, dry, grind with coal dust, enter blast-furnace tuyere through convey coal pipe and realize coal powder injection.

Claims (7)

1. catalytic combustion-supporting addictive for blast furnace sprayed coal is characterized in that comprising and the oxide compound, rare-earth oxide, the oxide compound of alkaline earth metal, the oxide compound of perovskite structure of metal oxide, transition metal adopts the mixed technology of machinery formulated.
2. catalytic combustion-supporting addictive for blast furnace sprayed coal according to claim 1 is characterized in that, the oxide compound of described metal oxide, transition metal oxide, rare-earth oxide, alkaline earth metal, the oxide compound of perovskite structure are: CuO, Fe 3O 4, MnO 2, Co 3O 4, La 2O 3, CeO 2, CaO, MgO, Al 2O 3, H 3BO 4, LaMnO 3
3. catalytic combustion-supporting addictive for blast furnace sprayed coal according to claim 1 and 2 is characterized in that, its weight percent proportioning is CuO 2～7%, Fe 3O 43～9%, MnO 210～20%, CoO 42～6%, La 2O 34～10%, CeO 26～12%, CaO 10～20%, MgO 10～20%, Al 2O 38～15%, H 3BO 36～10%, LaMnO 32～8%.
4, catalytic combustion-supporting addictive for blast furnace sprayed coal according to claim 1 and 2 is characterized in that, CuO, Fe 3O 4, MnO 2, CaO, MgO, Al 2O 3, H 3BO 3Granularity at 75um-95um, Co 3O 4, La 2O 2, CeO 2, LaMnO 3Granularity at 30um-60um.
5, catalytic combustion-supporting addictive for blast furnace sprayed coal according to claim 2, its weight percent proportioning is CuO 4.5%, Fe 3O 46%, MnO 215%, Co 3O 44%, La 2O 37%, CeO 29%, CaO 15%, MgO 15%, Al 2O 311.5%, H 3BO 38%, LaMnO 36%.
6. aforesaid right requires the addition means of described catalytic combustion-supporting addictive for blast furnace sprayed coal, it is characterized in that: before raw coal enters grinding machine, add coal dust product of the present invention to raw coal and carry on the belt of coal pulverizer, addition is the 0.1-0.9% of raw coal weight, in grinding machine, dry, grind with coal dust, enter blast-furnace tuyere through convey coal pipe and realize coal powder injection.
7, according to the addition means of the described catalytic combustion-supporting addictive for blast furnace sprayed coal of claim 5, it is characterized in that: add coal dust product of the present invention to raw coal before raw coal enters grinding machine and carry on the belt of coal pulverizer, addition is the 0.3-0.7% of raw coal weight.
CNB2005100453515A 2005-12-14 2005-12-14 Catalytic combustion-supporting addictive for blast furnace sprayed coal and its addition method Expired - Fee Related CN100358983C (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210209B (en) * 2006-12-27 2011-07-27 哈尔滨绿万家环保科技有限公司 Application of coal modifier in shaft kiln incineration and producing technique thereof
CN102389792A (en) * 2011-09-29 2012-03-28 北京工业大学 Three-dimensional ordered macroporous LaMnO3 supported high-dispensability MnOx catalyst and preparation method and use thereof
CN101240206B (en) * 2007-11-29 2012-09-05 湖北中沃玉叶能源科技开发有限公司 Shale coal-saving sulfur-solidifying agent
CN103266190A (en) * 2013-06-17 2013-08-28 北京科技大学 Multifunctional additive for pulverized coal injected into blast furnace and multifunctional additive addition method
CN105289267A (en) * 2015-11-23 2016-02-03 内蒙古科技大学 Desulfurization denitration agent for fire coal and preparation method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1042238C (en) * 1995-03-15 1999-02-24 宝山钢铁(集团)公司 Combustion adjuvant and adding method for sprayed coal powder of blast furnace
CN1401747A (en) * 2002-10-10 2003-03-12 燕民才 Spray blowing coal powder catalytic combustion adjuvant for blast furnace, and production method thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101210209B (en) * 2006-12-27 2011-07-27 哈尔滨绿万家环保科技有限公司 Application of coal modifier in shaft kiln incineration and producing technique thereof
CN101240206B (en) * 2007-11-29 2012-09-05 湖北中沃玉叶能源科技开发有限公司 Shale coal-saving sulfur-solidifying agent
CN102389792A (en) * 2011-09-29 2012-03-28 北京工业大学 Three-dimensional ordered macroporous LaMnO3 supported high-dispensability MnOx catalyst and preparation method and use thereof
CN103266190A (en) * 2013-06-17 2013-08-28 北京科技大学 Multifunctional additive for pulverized coal injected into blast furnace and multifunctional additive addition method
CN105289267A (en) * 2015-11-23 2016-02-03 内蒙古科技大学 Desulfurization denitration agent for fire coal and preparation method thereof

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