CN102206745A - Additive for saving energy in process of sintering iron ore - Google Patents
Additive for saving energy in process of sintering iron ore Download PDFInfo
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- CN102206745A CN102206745A CN201110120935XA CN201110120935A CN102206745A CN 102206745 A CN102206745 A CN 102206745A CN 201110120935X A CN201110120935X A CN 201110120935XA CN 201110120935 A CN201110120935 A CN 201110120935A CN 102206745 A CN102206745 A CN 102206745A
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- additive
- sintering
- coke powder
- ethanolamine
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Abstract
The invention discloses an additive for saving energy in the process of sintering iron ore. The additive is aminoethanol, which has a common name of ethanolamine. The using amount of the ethanolamine is 0.06 to 0.3 percent of the mass of coke powder for sintering. During use, the ethanolamine is dissolved in water to be prepared into a solution; adding the aqueous solution into the coke powder, mixing uniformly in advance; and mixing with blended ore and a fusing agent, and pelletizing for sintering. The additive can improve the combustion efficiency of the coke powder in the sintering process, reduce consumption of solid fuel, and improve the yield and quality of the sintered ore. The additive has the characteristics of wide sources, low cost, environmental friendliness and the like.
Description
Technical field
The present invention relates to a kind of additive, particularly relate to a kind of energy-conservation additive of agglomeration for iron mine that is used for.
Background technology
Agglomerate is the main raw material of China's blast furnace ironmaking, accounts for into 70%～80% of stove iron-bearing material.In the steel manufacture process, the sintering circuit energy consumption accounts for about 10% of Iron and Steel Production total energy consumption, is only second to ironmaking, is second big power consumer of Iron and Steel Production.The sintering circuit energy consumption mainly comprises solid fuel consumption, power consumption, igniting gas consumption etc., and wherein solid fuel consumption is the major portion of sintering energy consumption, accounts for 75%～80%.In recent years, although China's sintering energy consumption descends to some extent, but still be higher than the about 10～15kg/t-agglomerate of energy consumption level of advanced country in the world.Therefore, in the current main flow of advocating low-carbon economy, how when guaranteeing sintering mineral products, quality, reduce SINTERING PRODUCTION energy consumption and cost to greatest extent, be the much-talked-about topic in ferrous metallurgy field always.
Can reach the purpose of sintered, energy saving with addition of suitable additive.As " high-efficiency energy-conservation sintering additive " (application number: 200810031969.X), by BaO, CaO, MgO, MgCl
2, CaCl
2Or contain in the carbonate, nitrate, permanganate, borate of above-mentioned oxide compound a kind of, two or more, or boric acid and methacrylate polymer and Type 3U are prepared from; " additive of agglomeration for iron mine " (application number: 200510031648.6), consist of: sodium-chlor 30%～40%, SODIUMNITRATE 30%～40%, iron trichloride 10%～15%, cobalt chloride 1%～5%, lime 10%～20%, polyvinyl alcohol 1%; " sintered at ultra low temperature mineralising additive for saving energy " (application number: 200310124461.1), it contains very low temperature mineralizer 10%～60%, oxygenation agent 10%～30%, fusing agent 10%～40%, catalyzer 10%～40%, pore former 0～30%, and mixed preparing forms by weight percentage; " sintering catalysis burning-rate accelerator and preparation method " (application number: 200710037500.2), the prescription of this sintering catalysis burning-rate accelerator is: wilkinite 3%～10%, borax 8%～15%, boric acid 20%～40%, iron trichloride 2%～10%, SODIUMNITRATE 15%～30%, (NH
4)
2S
2O
86%～20%.
Above-mentioned additive has played certain effect to the yield and quality that reduces sintering solid fuel consumption, raising agglomerate, but above additive all is to be mixed with by multiple material to form, the grade (as containing the wilkinite additive) that adds the meeting reduction agglomerate that has behind the additive, the meeting that has brings disadvantageous effect (as boron-containing additive) for the metallurgical performance of agglomerate, and the minority additive also can corrode agglomerating plant, contaminate environment (as containing chlorine additive).
Summary of the invention
Technical problem to be solved by this invention provides and a kind ofly is used to strengthen that the agglomeration for iron mine process realizes sintered, energy saving is used for the energy-conservation additive of agglomeration for iron mine.
In order to solve the problems of the technologies described above, the energy-conservation additive of agglomeration for iron mine that is used for provided by the invention, its composition is a monoethanolamine, the popular name thanomin, it adds mass percent in the sintering coke powder be 0.6～3 ‰.
That adopts technique scheme is used for the energy-conservation additive of agglomeration for iron mine, during use thanomin is dissolved in the water, and with the aqueous solution and sintering coke powder mixing, mixes with mixing ore deposit, flux afterwards then, is used for sintering after the granulation.Additive provided by the invention is the burning of coke powder in the energy catalysis sinter mixture in sintering process, improve the efficiency of combustion of coke powder, thereby reach the yield rate that improves sintering velocity, sinter strength and agglomerate, thereby can reduce coke powder consumption in the sintering process, reduce solid-fuelled consumption, reach the purpose that sintered, energy saving reduces discharging.
Compare with additives such as boracic, nitrate, the additive that the present invention developed in sintering process, can not produce environmental pollution and equipment corrosion etc. problem, it is little to have consumption, and characteristics such as the source is wide, cost is low, environmental friendliness, and very broad prospect for its application is arranged.
Embodiment
The invention will be further described below in conjunction with embodiment.
Reference test: the coke powder consumption is 5.6%, basicity is 2.0, dioxide-containing silica is 4.85% in the sinter mixture, content of magnesia is 2.2%, mixture moisture 7.8%～8.4%, not doping, sintered ore rotary drum strength is 63.60%, yield rate is 77.56%, and utilization coefficient is 1.505t/m
2H, solid burnup are 61.21Kg/t.
When using additive, compound composition, sintering process condition and benchmark experiment are identical.
Embodiment 1: additive component is a monoethanolamine, the popular name thanomin, and it adds mass percent in the sintering coke powder be 0.6 ‰, be made into behind the aqueous solution and the coke powder mixing, dosage of coke 5.6%, sintered ore rotary drum strength are 63.61%, yield rate is 77.61%, and utilization coefficient is 1.510t/m
2H, solid burnup are 61.01Kg/t, compare with reference test, and be 0.6 ‰ o'clock in additive amount, agglomerate output increases, but amplitude is little.
Embodiment 2: additive component is a monoethanolamine, the popular name thanomin, and it adds mass percent in the sintering coke powder be 1.2 ‰, be made into behind the aqueous solution and the coke powder mixing, dosage of coke 5.6%, sintered ore rotary drum strength are 64.13%, yield rate is 79.66%, and utilization coefficient is 1.578t/m
2H, solid burnup are 59.17Kg/t, compare with reference test, and agglomerate output has improved 4.85%, and solid fuel consumption reduces 2.04Kg/t.
Embodiment 3: additive component is a monoethanolamine, the popular name thanomin, and it adds mass percent in the sintering coke powder be 1.8 ‰, be made into behind the aqueous solution and the coke powder mixing, dosage of coke 5.6%, sintered ore rotary drum strength are 64.67%, yield rate is 80.24%, and utilization coefficient is 1.694t/m
2H, solid burnup are 58.70Kg/t, compare with the benchmark experiment, and agglomerate output has improved 12.56%, and solid fuel consumption reduces 2.51Kg/t.
Embodiment 4: additive component is a monoethanolamine, the popular name thanomin, and it adds mass percent in the sintering coke powder be 2.4 ‰, be made into behind the aqueous solution and the coke powder mixing, dosage of coke 5.6%, sintered ore rotary drum strength are 65.20%, yield rate is 80.39%, and utilization coefficient is 1.736t/m
2H, solid burnup are 58.34Kg/t, compare with the benchmark experiment, and agglomerate output has improved 15.35%, and solid fuel consumption reduces 2.87Kg/t.
Embodiment 5: additive component is a monoethanolamine, the popular name thanomin, and it adds mass percent in the sintering coke powder be 3.0 ‰, be made into behind the aqueous solution and the coke powder mixing, dosage of coke 5.6%, sintered ore rotary drum strength are 63.07%, yield rate is 78.65%, and utilization coefficient is 1.663t/m
2H, solid burnup are 60.25Kg/t, compare with the benchmark experiment, though additive be increased to a certain amount of after because sintering velocity and heat transfer rate do not match, influence the agglomerate yield and quality, but agglomerate output has still improved 10.50%, and solid fuel consumption reduces 0.96Kg/t.
Embodiment 6: additive component is a monoethanolamine, the popular name thanomin, and it adds mass percent in the sintering coke powder be 2.4 ‰, be made into behind the aqueous solution and the coke powder mixing, dosage of coke 5.3%, sintered ore rotary drum strength are 64.31%, yield rate is 78.27%, and utilization coefficient is 1.615t/m
2H, solid burnup are 58.45Kg/t, compare with the benchmark experiment, and agglomerate output has improved 7.31%, and solid fuel consumption reduces 2.76Kg/t.
Claims (1)
1. one kind is used for the energy-conservation additive of agglomeration for iron mine, it is characterized in that: composition is a monoethanolamine, and described monoethanolamine adds mass percent in the sintering coke powder be 0.6～3 ‰.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110120935XA CN102206745A (en) | 2011-05-11 | 2011-05-11 | Additive for saving energy in process of sintering iron ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110120935XA CN102206745A (en) | 2011-05-11 | 2011-05-11 | Additive for saving energy in process of sintering iron ore |
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| CN102206745A true CN102206745A (en) | 2011-10-05 |
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ID=44695803
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| CN201110120935XA Pending CN102206745A (en) | 2011-05-11 | 2011-05-11 | Additive for saving energy in process of sintering iron ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113388745A (en) * | 2021-06-15 | 2021-09-14 | 中国科学院过程工程研究所 | Method for extracting valuable components from niobium-iron rutile without fluorine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237616A (en) * | 1998-05-28 | 1999-12-08 | 中国科学院化工冶金所 | Coal-saving agent |
| KR20010114074A (en) * | 2000-06-21 | 2001-12-29 | 이구택 | Sintered ore having low reduction degradation at low temperature |
| CN1784483A (en) * | 2003-05-10 | 2006-06-07 | 吴美惠 | Compositon for preventing scaling,excluding of soot,clinker and sludge,and controlling flame in combustion apparatus |
| CN101225343A (en) * | 2007-10-15 | 2008-07-23 | 林树森 | Coal-saving combustion-supporting additive |
| CN101372640A (en) * | 2007-08-24 | 2009-02-25 | 北京金源化学集团有限公司 | Method for adding coal catalyst and additive |
-
2011
- 2011-05-11 CN CN201110120935XA patent/CN102206745A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237616A (en) * | 1998-05-28 | 1999-12-08 | 中国科学院化工冶金所 | Coal-saving agent |
| KR20010114074A (en) * | 2000-06-21 | 2001-12-29 | 이구택 | Sintered ore having low reduction degradation at low temperature |
| CN1784483A (en) * | 2003-05-10 | 2006-06-07 | 吴美惠 | Compositon for preventing scaling,excluding of soot,clinker and sludge,and controlling flame in combustion apparatus |
| CN101372640A (en) * | 2007-08-24 | 2009-02-25 | 北京金源化学集团有限公司 | Method for adding coal catalyst and additive |
| CN101225343A (en) * | 2007-10-15 | 2008-07-23 | 林树森 | Coal-saving combustion-supporting additive |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113388745A (en) * | 2021-06-15 | 2021-09-14 | 中国科学院过程工程研究所 | Method for extracting valuable components from niobium-iron rutile without fluorine |
| CN113388745B (en) * | 2021-06-15 | 2022-09-02 | 中国科学院过程工程研究所 | Method for extracting valuable components from niobium-iron rutile without fluorine |
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Application publication date: 20111005 |