CN104775000A - Calcium deoxidizer using dolomite as refractory component and preparation method thereof - Google Patents
Calcium deoxidizer using dolomite as refractory component and preparation method thereof Download PDFInfo
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- CN104775000A CN104775000A CN201510132358.4A CN201510132358A CN104775000A CN 104775000 A CN104775000 A CN 104775000A CN 201510132358 A CN201510132358 A CN 201510132358A CN 104775000 A CN104775000 A CN 104775000A
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- calcium
- deoxidizer
- rhombspar
- dolomite
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Abstract
The invention discloses a calcium deoxidizer using dolomite as the refractory component. The calcium deoxidizer is characterized in that it is prepared from the following raw materials by weight part: 32-36 of calcium silicide, 10-13 of silicon carbide, 4-6 of photovoltaic cell processing waste sand, 40-48 of 5% hydrochloric acid, 3.5-4.5 of carboxymethylcellulose sodium, 2-3 of water glass, 3-4 of dolomite, and 1-2 of manganese dioxide. The calcium deoxidizer provided by the invention adopts calcium silicide, calcium carbide and the like as the main ingredients, dolomite is added as the high temperature resistant component, and through a series of processes, a porous component can be prepared, thus accelerating the efficiency of reaction with oxygen, reducing solid Al2O3 cluster inclusions, enhancing the molten steel fluidity. Therefore, the deoxidation effect is enhanced, and the alloy element recovery rate is improved. The calcium deoxidizer is feasible in production, and can achieve good economic benefits.
Description
Technical field
The present invention relates to deoxidant for steelmaking technical field, be specially a kind of rhombspar that utilizes as calcium deoxidizer of refractory composition and preparation method thereof.
Background technology
The height of oxygen content in steel directly has influence on the quality and performance of final steel.High oxygen level can cause in molten steel condensation process, because carbon and oxygen are partially dense poly-, carbon will be made again to be oxidized, make to produce bubble in steel, and have influence on the quality of steel; In addition, oxygen also can be separated out with FeO, Fe3O4 and other oxide form, is distributed on boundary surfaces, the plasticity of steel, mechanical property are declined, and produce hot-short, cold short, bring a series of harm to the quality product of special purpose steel.
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 solving the problem.
Summary of the invention
The object of this invention is to provide a kind of rhombspar that utilizes as calcium deoxidizer of refractory composition and preparation method thereof.Present component reasonable ratio, not containing aluminium element, adds rhombspar as refractory materials, sinter after making particle with calcium silicide, carbide of calcium etc., then pickling forms porous particle, can effectively react with steel water oxygen, nozzle clogging phenomenon improves, and improves the mobility of molten steel.
In order to realize object of the present invention, the present invention is by following scheme implementation:
Utilize rhombspar as a calcium deoxidizer for refractory composition, be made up of the raw material of following weight part: calcium silicide 32-36, silicon carbide 10-13, photovoltaic cell processing antiquated sand 4-6, concentration are hydrochloric acid 40-48, Xylo-Mucine 3.5-4.5, water glass 2-3, rhombspar 3-4, the Manganse Dioxide 1-2 of 5%;
A kind of rhombspar that utilizes of the present invention, as the calcium deoxidizer of refractory composition, is made up of following concrete steps:
(1) calcium silicide, silicon carbide, Manganse Dioxide are put into pulverizer and is ground into 200 object powder formation mixed powders, then the water of Xylo-Mucine with 3-5 times amount is mixed, be heated to 45 DEG C while stirring, until dissolve completely, form transparent colloidal solution;
(2) rhombspar is first broken into fritter, photovoltaic cell processing antiquated sand water cleans post-drying, then jointly put into pulverizer and be ground into 200 order powder, more jointly add granulation in extruding granulator with mixed powder, colloidal solution, water glass, control particle diameter is 6-7mm;
(3) particle is sent into baking oven with the temperature of 100-110 DEG C baking 30-40 minute, then send in sintering oven and to 400-450 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% hydrochloric 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 adopts calcium silicide, carbide of calcium etc. as main component, add rhombspar as high temperature resistant composition, after series of process, make porous composition, accelerate the efficiency reacted with oxygen, reduce solid-state Al
2o
3cluster inclusion, improves the mobility of molten steel, thus improves deoxidation effect, and can improve the rate of recovery of alloying element, be practicable aborning, can obtain good economic benefit.
Specific embodiments
Below by specific examples, the present invention is described in detail.
Utilize rhombspar as a calcium deoxidizer for refractory composition, be made up of the raw material of following weight part (kilogram): calcium silicide 32, silicon carbide 10, photovoltaic cell processing antiquated sand 4, concentration are hydrochloric acid 40, Xylo-Mucine 3.5, water glass 2, rhombspar 3, the Manganse Dioxide 1 of 5%;
A kind of rhombspar that utilizes of the present invention, as the calcium deoxidizer of refractory composition, is made up of following concrete steps:
(1) calcium silicide, silicon carbide, Manganse Dioxide are put into pulverizer and is ground into 200 object powder formation mixed powders, then the water of Xylo-Mucine with 3 times amount is mixed, be heated to 45 DEG C while stirring, until dissolve completely, form transparent colloidal solution;
(2) rhombspar is first broken into fritter, photovoltaic cell processing antiquated sand water cleans post-drying, then jointly put into pulverizer and be ground into 200 order powder, more jointly add granulation in extruding granulator with mixed powder, colloidal solution, water glass, control particle diameter is 6-7mm;
(3) particle is sent into baking oven and toast 30 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 400-450 DEG C of condition in sintering oven, taking-up is cooled to room temperature;
(4) by sintering after particle put into concentration be 5% hydrochloric 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 | 361-425 | 540-636 | 20-28 |
| Si-Al-Ba alloy reductor | 80 | 348-422 | 530-623 | 19-28 |
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. one kind utilizes rhombspar as the calcium deoxidizer of refractory composition, it is characterized in that, be made up of the raw material of following weight part: calcium silicide 32-36, silicon carbide 10-13, photovoltaic cell processing antiquated sand 4-6, concentration are hydrochloric acid 40-48, Xylo-Mucine 3.5-4.5, water glass 2-3, rhombspar 3-4, the Manganse Dioxide 1-2 of 5%.
2. a kind of rhombspar that utilizes, as the calcium deoxidizer of refractory composition, is characterized in that, is made up of following concrete steps according to claim 1:
(1) calcium silicide, silicon carbide, Manganse Dioxide are put into pulverizer and is ground into 200 object powder formation mixed powders, then the water of Xylo-Mucine with 3-5 times amount is mixed, be heated to 45 DEG C while stirring, until dissolve completely, form transparent colloidal solution;
(2) rhombspar is first broken into fritter, photovoltaic cell processing antiquated sand water cleans post-drying, then jointly put into pulverizer and be ground into 200 order powder, more jointly add granulation in extruding granulator with mixed powder, colloidal solution, water glass, control particle diameter is 6-7mm;
(3) particle is sent into baking oven with the temperature of 100-110 DEG C baking 30-40 minute, then send in sintering oven and to 400-450 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% hydrochloric 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510132358.4A CN104775000A (en) | 2015-03-25 | 2015-03-25 | Calcium deoxidizer using dolomite as refractory component and preparation method thereof |
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| CN201510132358.4A CN104775000A (en) | 2015-03-25 | 2015-03-25 | Calcium deoxidizer using dolomite as refractory component and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463157A (en) * | 2015-12-30 | 2016-04-06 | 安徽悦众车身装备有限公司 | Cast steel axle housing for high-toughness and low-carbon vehicle |
| CN105483324A (en) * | 2015-12-30 | 2016-04-13 | 安徽悦众车身装备有限公司 | Casting state high-strength high-elongation steel casting material for car axle housing |
| CN105568120A (en) * | 2015-12-30 | 2016-05-11 | 安徽悦众车身装备有限公司 | Torsional deformation-resistant cast steel material for automobile axle |
| CN105568130A (en) * | 2015-12-30 | 2016-05-11 | 安徽悦众车身装备有限公司 | High-comprehensive-performance steel material for automobile axle housing |
| CN107029684A (en) * | 2017-06-20 | 2017-08-11 | 柳州豪祥特科技有限公司 | Long-acting gas deoxidation agent of spacetabs type and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665856A (en) * | 2009-08-28 | 2010-03-10 | 莱芜钢铁股份有限公司 | Steel-making deoxidizer and preparation method 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 |
-
2015
- 2015-03-25 CN CN201510132358.4A patent/CN104775000A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665856A (en) * | 2009-08-28 | 2010-03-10 | 莱芜钢铁股份有限公司 | Steel-making deoxidizer and preparation method 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463157A (en) * | 2015-12-30 | 2016-04-06 | 安徽悦众车身装备有限公司 | Cast steel axle housing for high-toughness and low-carbon vehicle |
| CN105483324A (en) * | 2015-12-30 | 2016-04-13 | 安徽悦众车身装备有限公司 | Casting state high-strength high-elongation steel casting material for car axle housing |
| CN105568120A (en) * | 2015-12-30 | 2016-05-11 | 安徽悦众车身装备有限公司 | Torsional deformation-resistant cast steel material for automobile axle |
| CN105568130A (en) * | 2015-12-30 | 2016-05-11 | 安徽悦众车身装备有限公司 | High-comprehensive-performance steel material for automobile axle housing |
| CN107029684A (en) * | 2017-06-20 | 2017-08-11 | 柳州豪祥特科技有限公司 | Long-acting gas deoxidation agent of spacetabs type and preparation method thereof |
| CN107029684B (en) * | 2017-06-20 | 2020-02-21 | 柳州豪祥特科技有限公司 | Slow-release type long-acting gas deoxidizer and preparation method thereof |
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