CN104775004A - Corundum component containing calcium composite deoxidizer and preparation method thereof - Google Patents
Corundum component containing calcium composite deoxidizer and preparation method thereof Download PDFInfo
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- CN104775004A CN104775004A CN201510132477.XA CN201510132477A CN104775004A CN 104775004 A CN104775004 A CN 104775004A CN 201510132477 A CN201510132477 A CN 201510132477A CN 104775004 A CN104775004 A CN 104775004A
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Abstract
The invention discloses a corundum component containing calcium composite deoxidizer, which is characterized by being prepared from the following raw materials by weight part: 33-37 of calcium silicide, 15-18 of silicon carbide, 1.5-2 of corundum powder, 1-2 of steel slag powder, 2-3 of nano-graphite powder, 40-50 of 5% sulfuric acid, 3.8-5 of polyvinyl alcohol, and 1-1.5 of brown coal. The composite deoxidizer provided by the invention takes calcium silicide, silicon carbide and the like as the main components, the main components cooperate with corundum powder, nano-graphite powder and the like to be prepared into particles, the particles are sintered and then pickled to form porous particles, which can effectively react with oxygen in molten steel. Also, the particles have good dispersibility, and can improve the liquidity of molten steel. Besides, a proper amount of corundum is added to the formula, the aluminum component can refine grains and fix N in steel, and reduces the ageing effect. Thus, simultaneous action of calcium and aluminum can produce spherical 12CaO.7Al2O3, and the floating speed is fast, thereby reducing the amount of inclusions in molten steel. The composite deoxidizer provided by the invention has the advantages of low process cost and high deoxidation efficiency.
Description
Technical field
The present invention relates to deoxidant for steelmaking technical field, be specially a kind of compound deoxidizer in calcium series containing corundum composition and preparation method thereof.
Background technology
With the development of science and technology, to the requirement increasingly stringent of steel quality, and oxygen and the existence form in steel thereof have a significant impact Steel Properties, and then steel liquid deoxidation technique (reductor kind, add-on, joining day, order etc.) also develops constantly, in converter tapping process, steel liquid deoxidation makes steel requisite process procedure exactly, and wherein the selection of reductor is most important.The Main Basis of reductor is selected to be the stability of the consumption of deoxidation dosage, cost and reductor.
The use of molten steel end-deoxidizer successively lives through the processes such as ferrosilicoaluminum, Si-Al-Ba alloy and Si-Al-Ba-Ca.Usual employing Si-Al-Ba alloy is as molten steel end-deoxidizer, and ferrosilicon and ferromanganese are as alloying material.This deoxidation and alloying mode, affects by molten steel terminal C, tapping temperature and the lower quantity of slag etc., and cause Si, Mn composition fluctuation in steel large, the alloying element rate of recovery is unstable.And when reductor add-on is bigger than normal, in molten steel, dissolved aluminum exceedes to a certain degree, will cause generating solid-state Al
2o
3cluster inclusion, molten steel viscosity increases, and inclusion increases and eliminating of not easily floating, and finally causes middle water-coating port dross, and fluidity molten steel difference affects the direct motion of steelworks production always.And the composition of refractory materials, particularly SiO
2and Fe
2o
3deng content, very large on the loss impact of dissolved aluminum in steel and calcium, the Al of wherein oxidized formation
2o
3remove as the top of the slag can not be floated up in time, then make the possibility of nozzle clogging strengthen.Therefore, in order to reach better economic benefit, being badly in need of a kind of reductor of exploitation, can effectively solve the problem, and it being low to have cost, stable in properties, the feature that efficiency is high.
Summary of the invention
The object of this invention is to provide a kind of compound deoxidizer in calcium series containing corundum composition and preparation method thereof.Present component reasonable ratio, with calcium silicide, carbide of calcium etc. for main component, sinter after coordinating lapis amiridis, Nano graphite powder etc. to make particle, then pickling forms porous particle, can effectively react with steel water oxygen, good dispersity simultaneously, improve the mobility of molten steel, nozzle clogging phenomenon improves; And add appropriate corundum, add appropriate aluminium component, crystal grain thinning and fix N in steel, reduce the effect of timeliness, such calcium and aluminium act on simultaneously, can generate spherical to have less specific surface 12CaO 7Al
2o
3, ascent rate is fast, thus in molten steel, the amount of inclusion significantly reduces.
In order to realize object of the present invention, the present invention is by following scheme implementation:
Containing the compound deoxidizer in calcium series of corundum composition, be made up of the raw material of following weight part: calcium silicide 33-37, silicon carbide 15-18, lapis amiridis 1.5-2, steel-making slag powder 1-2, Nano graphite powder 2-3, concentration are sulfuric acid 40-50, polyvinyl alcohol 3.8-5, the brown coal 1-1.5 of 5%;
A kind of compound deoxidizer in calcium series containing corundum composition of the present invention, be made up of following concrete steps:
(1) calcium silicide, silicon carbide, steel-making slag powder are put into pulverizer and be ground into 200 object powder formation mixed powders, then the water of polyvinyl alcohol with 3-4 times amount is mixed, be uniformly dispersed post-heating to 60-70 DEG C, do not stop to be stirred to polyvinyl alcohol and dissolve formation solution completely;
(2) brown coal are put into pulverizer and be ground into 200 order powder, then add granulation in extruding granulator with mixed powder, polyvinyl alcohol solution, lapis amiridis, Nano graphite powder, control particle diameter is 6-7mm;
(3) particle is sent into baking oven with the temperature of 100-110 DEG C baking 35-40 minute, then send in sintering oven and to 420-450 DEG C of condition, sinter 1.5-2 hour with 8-10 DEG C/min of ramp, take out and be cooled to room temperature;
(4) by sintering after particle put into concentration be 5% sulfuric acid wash 30-40 minute, then filter, be washed till neutrality with deionized water, finally put into baking oven 90-100 DEG C again and dry and get final product.
The invention has the beneficial effects as follows: the present invention with calcium silicide, carbide of calcium etc. for main component, sinter after coordinating lapis amiridis, Nano graphite powder etc. to make particle, then pickling forms porous particle, can effectively react with steel water oxygen, good dispersity simultaneously, improves the mobility of molten steel; And in formula appropriate interpolation corundum, aluminium component is crystal grain thinning and fix N in steel, and reduce the effect of timeliness, such calcium and aluminium act on simultaneously, can generate spherical to have less specific surface 12CaO7Al
2o
3, ascent rate is fast, thus in molten steel, the amount of inclusion significantly reduces; Present invention process cost is low, and deoxidation effectiveness is high, practical in actual production.
Specific embodiments
Below by specific examples, the present invention is described in detail.
A compound deoxidizer in calcium series containing corundum composition, is made up of the raw material of following weight part (kilogram): calcium silicide 33, silicon carbide 15, lapis amiridis 1.5, steel-making slag powder 1, Nano graphite powder 2, concentration are sulfuric acid 40, polyvinyl alcohol 3.8, the brown coal 1 of 5%;
A kind of compound deoxidizer in calcium series containing corundum composition of the present invention, be made up of following concrete steps:
(1) calcium silicide, silicon carbide, steel-making slag powder are put into pulverizer and be ground into 200 object powder formation mixed powders, then the water of polyvinyl alcohol with 3 times amount is mixed, be uniformly dispersed post-heating to 60-70 DEG C, do not stop to be stirred to polyvinyl alcohol and dissolve formation solution completely;
(2) brown coal are put into pulverizer and be ground into 200 order powder, then add granulation in extruding granulator with mixed powder, polyvinyl alcohol solution, lapis amiridis, Nano graphite powder, control particle diameter is 6-7mm;
(3) particle is sent into baking oven and toast 35 minutes with the temperature of 100-110 DEG C, then send into sinter 1.5 hours under 8-10 DEG C/min of ramp to 420-450 DEG C of condition in sintering oven, taking-up is cooled to room temperature;
(4) by sintering after particle put into concentration be 5% sulfuric acid washing 30 minutes, then filter, be washed till neutrality with deionized water, finally put into baking oven 90-100 DEG C again and dry and get final product.
The radius using calcium deoxidizer of the present invention to produce be extract in the HRB335 Deformed Steel Bars of 22 millimeters radius that several samples and Si-Al-Ba alloy reductor produce be the HRB335 Deformed Steel Bars of 22 millimeters as a comparison, measure its mechanical property, as following table:
| Sample | Sample number/ | σs/ MPa | σb/MPa | δ5/% |
| Reductor of the present invention | 80 | 360-426 | 542-636 | 20-27 |
| Si-Al-Ba alloy reductor | 80 | 349-423 | 535-623 | 19-26 |
Use the HRB335 steel grade that calcium deoxidizer deoxidation is produced, the mechanical property of its stocking meets GB1499-1998 completely, and tensile strength and yield strength are all improved to some extent.
Claims (2)
1. the compound deoxidizer in calcium series containing corundum composition, it is characterized in that, be made up of the raw material of following weight part: calcium silicide 33-37, silicon carbide 15-18, lapis amiridis 1.5-2, steel-making slag powder 1-2, Nano graphite powder 2-3, concentration are sulfuric acid 40-50, polyvinyl alcohol 3.8-5, the brown coal 1-1.5 of 5%.
2. a kind of compound deoxidizer in calcium series containing corundum composition according to claim 1, is characterized in that, be made up of following concrete steps:
(1) calcium silicide, silicon carbide, steel-making slag powder are put into pulverizer and be ground into 200 object powder formation mixed powders, then the water of polyvinyl alcohol with 3-4 times amount is mixed, be uniformly dispersed post-heating to 60-70 DEG C, do not stop to be stirred to polyvinyl alcohol and dissolve formation solution completely;
(2) brown coal are put into pulverizer and be ground into 200 order powder, then add granulation in extruding granulator with mixed powder, polyvinyl alcohol solution, lapis amiridis, Nano graphite powder, control particle diameter is 6-7mm;
(3) particle is sent into baking oven with the temperature of 100-110 DEG C baking 35-40 minute, then send in sintering oven and to 420-450 DEG C of condition, sinter 1.5-2 hour with 8-10 DEG C/min of ramp, take out and be cooled to room temperature;
(4) by sintering after particle put into concentration be 5% sulfuric acid wash 30-40 minute, then filter, be washed till neutrality with deionized water, finally put into baking oven 90-100 DEG C again and dry and get final product.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033498A (en) * | 2006-12-21 | 2007-09-12 | 马鞍山中冶钢铁冶金科技实业有限公司 | Electric furnace highly effective metallurgy complexing agent |
| CN101451177A (en) * | 2007-12-06 | 2009-06-10 | 攀钢集团攀枝花钢铁研究院 | Deoxidizing agent and deoxidizing method for non-metal composite steel-smelting |
| CN101811879A (en) * | 2009-02-24 | 2010-08-25 | 宝山钢铁股份有限公司 | Al2O3-SiO2-SiC-based jet material for foundry ladle |
| CN102653809A (en) * | 2012-03-16 | 2012-09-05 | 张晖 | Composite refining agent for metallurgy and processing technique thereof |
| CN103642989A (en) * | 2013-11-21 | 2014-03-19 | 青岛佰众化工技术有限公司 | Steel liquid purification agent |
| CN103695805A (en) * | 2013-11-18 | 2014-04-02 | 安徽利思达网业有限公司 | High strength and high wear-resistance stainless steel wire and preparation method thereof |
-
2015
- 2015-03-25 CN CN201510132477.XA patent/CN104775004A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101033498A (en) * | 2006-12-21 | 2007-09-12 | 马鞍山中冶钢铁冶金科技实业有限公司 | Electric furnace highly effective metallurgy complexing agent |
| CN101451177A (en) * | 2007-12-06 | 2009-06-10 | 攀钢集团攀枝花钢铁研究院 | Deoxidizing agent and deoxidizing method for non-metal composite steel-smelting |
| CN101811879A (en) * | 2009-02-24 | 2010-08-25 | 宝山钢铁股份有限公司 | Al2O3-SiO2-SiC-based jet material for foundry ladle |
| CN102653809A (en) * | 2012-03-16 | 2012-09-05 | 张晖 | Composite refining agent for metallurgy and processing technique thereof |
| CN103695805A (en) * | 2013-11-18 | 2014-04-02 | 安徽利思达网业有限公司 | High strength and high wear-resistance stainless steel wire and preparation method thereof |
| CN103642989A (en) * | 2013-11-21 | 2014-03-19 | 青岛佰众化工技术有限公司 | Steel liquid purification agent |
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Application publication date: 20150715 |