CN102212681B - Sintering synergistic agent and use method thereof - Google Patents
Sintering synergistic agent and use method thereof Download PDFInfo
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- CN102212681B CN102212681B CN 201110124984 CN201110124984A CN102212681B CN 102212681 B CN102212681 B CN 102212681B CN 201110124984 CN201110124984 CN 201110124984 CN 201110124984 A CN201110124984 A CN 201110124984A CN 102212681 B CN102212681 B CN 102212681B
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- sintering
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- 238000005245 sintering Methods 0.000 title claims abstract description 59
- 239000012747 synergistic agent Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 12
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000000694 effects Effects 0.000 claims abstract description 17
- 239000000446 fuel Substances 0.000 claims abstract description 15
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000292 calcium oxide Substances 0.000 claims abstract description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000010436 fluorite Substances 0.000 claims abstract description 7
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 6
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 6
- 238000011068 loading method Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 abstract description 9
- 239000012286 potassium permanganate Substances 0.000 abstract description 2
- 239000004449 solid propellant Substances 0.000 abstract description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 10
- 229910052796 boron Inorganic materials 0.000 description 10
- 239000007787 solid Substances 0.000 description 9
- 239000007791 liquid phase Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 5
- 235000012241 calcium silicate Nutrition 0.000 description 5
- 229910052918 calcium silicate Inorganic materials 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 2
- 239000003830 anthracite Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical group [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- WETINTNJFLGREW-UHFFFAOYSA-N calcium;iron;tetrahydrate Chemical compound O.O.O.O.[Ca].[Fe].[Fe] WETINTNJFLGREW-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 oxonium ion Chemical class 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a sintering synergistic agent comprising the following components in percentage by weight: 20-30% of active calcium oxide with the activity of more than or equal to 280 ml/4N-HCl, 20-30% of active magnesium oxide with the activity of more than or equal to 180 ml/4N-HCl, 20-30% of fluorite, 5-10% of diboron trioxide with the purity of more than or equal to 99% and 5-15% of copper sulfate with the purity of more than or equal to 95%, wherein the content of the active calcium oxide with the granularity of 0.074 mm is more than or equal to 70%; the content of the active magnesium oxide with the granularity of 0.074 mm is more than or equal to 60%; and the content of the fluorite with the granularity of 0.147 mm is more than or equal to 60%;. In the sintering synergistic agent disclosed by the invention, the copper sulfate can be replaced by 1-5% of potassium permanganate with the purity of more than or equal to 96%; the components are uniformly stirred in the proportions so as to form a product; in a sintering production process, 0.04-0.045 % of the sintered feeding material is added at back of a fuel bin; 5-8% of solid fuel consumption can be reduced; the utilization factor of a sintering machine is increased by about 1%; and the drum strength is improved by 1-2%.
Description
Technical field
The invention belongs to the metallurgical material class, relate to a kind of steel-making sintering metallurgical chemistry additive, especially relate to a kind of sintering synergistic agent and using method thereof that can reduce sintering energy consumption.
Background technology
Domestic SINTERING PRODUCTION adopts burnt at present and coal is used with, because the heat that the burning of coke powder and pulverized anthracite produces has difference, using with of coke powder and pulverized anthracite certainly will increase the difficulty of controlling fuel ratio, brings disadvantageous effect to reducing solid burnup; The unreasonable impact on solid consumption of fuel granularity is also very large, as: fuel pellet is spent slightly, the compound partial combustion, sintered material burns not on earth, and productivity of sintering machine reduces, Sintering Yield descends, fuel granularity is meticulous, so that the bed permeability variation, the part coke powder in sintering process in the compound will be pumped, cause the sintered material can not be fully sintered, Sintering Yield descends.Under this state, in order to improve sinter quality, make sintered material perfect combustion, numerous agglomerant authors finish by the mode that increases solid burnup, caused the rising of sintering solid burnup, this also is the major reason that present domestic sintering system burnup remains high always.
Summary of the invention
Purpose of the present invention is exactly to increase the mode of production that fuel consumption improves sinter quality in order to overcome to utilize in the existing SINTERING PRODUCTION, a kind of sintering synergistic agent is provided, employing is under original working condition, by changing the combustioncharacteristics of fuel, change the sintering atmosphere in the sintering process, produce more liquid phase, reach the purpose that reduces solid burnup, improves sinter quality.
Another object of the present invention provides the using method of above-mentioned sintering synergistic agent.
For realizing above-mentioned purpose of the present invention, sintering synergistic agent of the present invention by the following technical solutions.
Sintering synergistic agent of the present invention, it includes active calcium oxide, activated magnesia, fluorite, boron trioxide, copper sulfate, and its weight percent composition is:
(1) active calcium oxide of granularity-0.074mm 〉=70%, activity degree 〉=280ml/4N-HCl: 20%～30%;
(2) activated magnesia of granularity-0.074mm 〉=60%, activity degree 〉=180ml/4N-HCl: 20%～30%;
(3) fluorite of granularity-0.147mm 〉=60%: 20%～30%;
(4) boron trioxide of purity 〉=99%: 5%～10%;
(5) copper sulfate of purity 〉=95%: 5%～15%.
The another kind prescription (weight) of sintering synergistic agent of the present invention is:
(1) active calcium oxide of granularity-0.074mm 〉=70%, activity degree 〉=280ml/4N-HCl: 22%～32%;
(2) activated magnesia of granularity-0.074mm 〉=60%, activity degree 〉=180ml/4N-HCl: 22%～32%;
(3) fluorite of granularity-0.147mm 〉=60%: 22%～32%;
(4) boron trioxide of purity 〉=99%: 5%～10%;
(5) potassium permanganate of purity 〉=96%: 1%～5%.
The using method of sintering synergistic agent of the present invention is: by above component, proportioning uniform stirring, namely be mixed with product.Add behind fuel bunker by 0.4 ‰～0.45 ‰ of sintering material loading amount in sintering production process, can reach following effect: reduce solid burnup 5%～8%, productivity of sintering machine improves about 1%, and barrate strength improves 1～2%.
Theoretical foundation and know-why that the present invention adopts are:
Theoretical foundation of the present invention:
Boron, MgO, CaF have remarkable effect as a kind of trace additives to weave construction and the performance of improving material.Can improve the generation of agglomerate liquid phase and fixed with addition of boron-containing additive in the agglomerate, improve the cold strength of agglomerate, suppress natural degradation, also can improve Metallurgical Properties of Sinter simultaneously; MgO is a kind of stablizer, can reduce the sintering ore pulverization degree, has improved intensity and the quality of agglomerate; CaF has the effect that reduces the agglomerate fusing point, can reduce solid burnup in SINTERING PRODUCTION, plays the effect of energy saving and cost lowering.In addition, blast-furnace smelting boracic agglomerate can improve smelting index, thereby obtains good economic benefit.
Can improve sinter strength, improve metallurgical performance with addition of micro-boracic, MgO element in the sintered material, its reason is: the B in the boron-containing iron concentrate
2O
3Fusing point is low, can form low melting component, the generation of liquid phase in the acceleration of sintering process with many oxide compounds in the raw material.Studies show that, add boron in the agglomerate production after, boron mainly is enriched in the initial stage liquid phase, works as B
2O
3The initial stage that enters makes the reduced viscosity of initial stage liquid phase during liquid phase, the mobile enhancing, thus be conducive to the formation of sintering reaction and Binder Phase, sinter strength is increased, quality improves; Boron is one of most typical element in the crystal chemistry stablizer, but establishment calcium orthosilicate (2CaOSiO
2) the heterogeneous transformation of homogeneity.In agglomerate cooling consolidation process, 2CaOSiO
2Play a part extremely badly, its multiple crystal conversion can produce very large internal stress and volumetric expansion agglomerate is inner, so that the agglomerate generation efflorescence of fixed moulding, intensity subtracts greatly.Because the boron ionic radius is little, can enter in the multi mineral lattice under the high temperature, other mineral are stablized, reduced the destruction of internal stress; In addition, after agglomerate adds boron, can make 2CaOSiO
2Growing amount reduce, this is because B
2O
3Existence liquid phase viscosity is reduced, ventilation property improves oxidisability is strengthened on the one hand; Be conducive to again on the other hand the Ca in the liquid phase
2+To Fe
2O
3The diffusion on surface promotes the formation of calcium ferrite.
Because MgO is a kind of stablizer, its Mg
2+Can diffuse into replacement part Ca in the calcium orthosilicate lattice in sintering, generate monticellite, this result causes calcium orthosilicate content minimizing in the agglomerate on the one hand, reduces the sintering ore pulverization degree; Because a large amount of intensity of generation are high, the monticellite of good stability, further improved intensity and the quality of agglomerate on the other hand.In addition, boron can improve Mg in the agglomerate
2+Activity, promote the carrying out of said process.In sinter mixture, add simultaneously boracic and contain magnesium material, B
2O
3Has obvious interaction with MgO.
B
2O
3, MgO and CaF remedied separately the disadvantageous effect to Metallurgical Properties of Sinter mutually.Add simultaneously B
2O
3, MgO and CaF be than adding separately when wherein any, and be all more effective to improving sinter quality; Boron has the effect of crystal grain thinning, can make calcium orthosilicate in the agglomerate grain refining, be evenly distributed, be conducive to the relaxation phase varying stress, improve the powder performance of agglomerate.
The technology of the present invention principle:
Be a kind ofly to be formed by materials such as multiple non-energy Inorganic Chemicals, organic sandwich compound, catalyzer among the present invention, according to prescription in proportion after the batching, through mechanically mixing, grind oven dry and form, do not produce any pollution in the production process.In SINTERING PRODUCTION, add this product, can improve artificially combustioncharacteristics, change the cracking of various organic structures unit in combustion processes in the fuel, according to the difference of burning situation, the combustion processes of fuel is fulfiled ahead of schedule; Can change the atmosphere in the sintering process, an amount of oxonium ion is provided, and catalysis CO
2Secondary reaction form CO, enlarge oxidation zone and balance oxidation district, reduce the fuel burning-point, increase flammable unit, reduce the rate of return mine, improve productivity of sintering machine; This product is take low-temperature sintering and gasification theory as the basis, can improve the quality of agglomerate, after in sinter mixture, adding this a small amount of product, to former, fuel gasification reaction, certain katalysis is played in combustion reactions, make combustionvelocity quickening in the sinter bed, react completely, form calcareous Solid solution, the fusing point of the two is descended very soon, become at last the common solution phase of other composition by the solid of Single Iron hydrochlorate form, through overcooling, the recrystallize of wustite forms netted crystal, and the consolidation strength of agglomerate is improved greatly.
In the situation that the SINTERING PRODUCTION condition is constant, add this product, can improve the sintering fuel efficiency of combustion, improve oxidation rate and the sinter strength of raw materials for sintering, suppress heat sinter in temperature-fall period because calcium orthosilicate (2CaOSiO
2) the caused powder phenomenon-tion of phase transformation, improve sintering atmosphere, reach volume increase, consumption reduction, can reduce the purpose of the content of sintering sulfur dioxide in tail gas simultaneously, very remarkable in economic benefit and the social benefit of the each side such as energy-saving and environmental protection.
After sintering synergistic agent of the present invention adopted above technical scheme, it was embodied in the following aspects to the sintering Main Function:
(1) improves sintered ore rotary drum strength;
(2) improve productivity of sintering machine, yield rate;
(3) reduce the sintering process solid fuel consumption.
Embodiment
For further describing the present invention, for a more detailed description to sintering synergistic agent of the present invention below in conjunction with embodiment.
Table 1 listed that sintering synergistic agent of the present invention adopts weight percent form.
Table 2 listed that the another kind of prescription of sintering synergistic agent of the present invention adopts weight percent form.
The granularity of each component, activity degree and purity are as hereinbefore.
The weight percent of table 1 sintering synergistic agent forms (%)
The weight percent of the another kind of prescription of table 2 sintering synergistic agent forms (%)
The component that sintering synergistic agent of the present invention lists by table 1, table 2 embodiment, proportioning uniform stirring namely are mixed with product.Add behind fuel bunker by 0.4 ‰～0.45 ‰ of sintering material loading amount in sintering production process, can reach and reduce solid burnup 5%～8%, productivity of sintering machine improves about 1%, and barrate strength improves 1～2%.
Claims (2)
1. sintering synergistic agent, it is characterized in that: it includes active calcium oxide, activated magnesia, fluorite, boron trioxide, copper sulfate, and its weight percent forms and is:
(1) active calcium oxide of granularity-0.074mm 〉=70%, activity degree 〉=280ml/4N-HCl: 20%～30%;
(2) activated magnesia of granularity-0.074mm 〉=60%, activity degree 〉=180ml/4N-HCl: 20%～30%;
(3) fluorite of granularity-0.147mm 〉=60%: 20%～30%;
(4) boron trioxide of purity 〉=99%: 5%～10%;
(5) copper sulfate of purity 〉=95%: 5%～15%.
2. the using method of sintering synergistic agent as claimed in claim 1 is characterized in that: by above component, proportioning uniform stirring, be mixed with product, add behind fuel bunker by 0.4 ‰～0.45 ‰ of sintering material loading amount in sintering production process.
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| CN 201110124984 CN102212681B (en) | 2010-12-27 | 2011-05-05 | Sintering synergistic agent and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010605798.4 | 2010-12-27 | ||
| CN201010605798 | 2010-12-27 | ||
| CN 201110124984 CN102212681B (en) | 2010-12-27 | 2011-05-05 | Sintering synergistic agent and use method thereof |
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| Publication Number | Publication Date |
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| CN102212681A CN102212681A (en) | 2011-10-12 |
| CN102212681B true CN102212681B (en) | 2013-03-27 |
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| CN105907951B (en) * | 2016-05-13 | 2018-09-21 | 辽宁科技大学 | A kind of sinter additives and its preparation and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1733950A (en) * | 2005-09-16 | 2006-02-15 | 刘沈杰 | Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace |
| CN1827801A (en) * | 2006-04-10 | 2006-09-06 | 刘虎生 | Chemical additive for sintering iron ore fine |
-
2011
- 2011-05-05 CN CN 201110124984 patent/CN102212681B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1733950A (en) * | 2005-09-16 | 2006-02-15 | 刘沈杰 | Ferronickel smelting process of nickel oxide ore free of crystal water in blast furnace |
| CN1827801A (en) * | 2006-04-10 | 2006-09-06 | 刘虎生 | Chemical additive for sintering iron ore fine |
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Effective date of registration: 20181129 Address after: No. 198 Changjiang Road, Huashan District, Ma'anshan City, Anhui Province Patentee after: MAANSHAN JIUPENG JIATENG MACHINERY INDUSTRY Co.,Ltd. Address before: 247120 Jinan Industrial Park, Chizhou Economic and Technological Development Zone, Anhui Province Patentee before: Chizhou Runpeng Metallurgical Technology Co.,Ltd. |
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