CN103952513B - A kind of compound metallurgical is optimized qualitative change agent and is optimized qualitative change method - Google Patents
A kind of compound metallurgical is optimized qualitative change agent and is optimized qualitative change method Download PDFInfo
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- CN103952513B CN103952513B CN201410179770.7A CN201410179770A CN103952513B CN 103952513 B CN103952513 B CN 103952513B CN 201410179770 A CN201410179770 A CN 201410179770A CN 103952513 B CN103952513 B CN 103952513B
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Abstract
The present invention discloses a kind of compound metallurgical and optimizes qualitative change agent and optimize qualitative change method.This compound metallurgical is optimized qualitative change agent and is comprised (mass percent) ionic calcium cpd 2-6%, potassium ion compound 19-25%, lanthanum based compound 8-12%, yttrium based compound 12-17%, strontium based compound 19-25%, cerium based compound 15-21%.It is optimized qualitative change method and comprises the steps: to be joined in the smelting furnace being about to come out of the stove by the 0.1-0.4% of molten steel, molten iron or iron and steel liquid quality, or joins in pouring ladle with the molten steel etc. after coming out of the stove, or directly joins in casting mold; Then Quick pouring is shaping.It is compound qualitative change agent that metallurgy of the present invention optimizes qualitative change agent, and after once adding, play the effects such as dehydrogenation, deoxygenation, desulfurization, dephosphorization, the oxygen level of products obtained therefrom reaches below 30ppm, and desulfurization degree or dephosphorization rate all can reach more than 70% simultaneously.
Description
Technical field
The invention belongs to field of steel metallurgy, be specifically related to a kind of compound metallurgical and optimize qualitative change agent and optimize qualitative change method.
Background technology
Steel demand amount is huge, in order to improve the quality of production of iron and steel, usual iron and steel is in casting smelting process, need a series of process such as refining being carried out to iron and steel, go bad, reach the objects such as the grain fineness number of inclusion and the thinned steel reduced or remove in iron and steel, thus improve the cleanliness factor of iron and steel and the performance of steel.At present at metallurgy industry, in molten steel or iron and steel liquid, usually add scavenging agent, nodulizing agent, nucleating agent or rare earth alterative to realize the deoxidization desulfuration, purifying iron and steel etc. of iron and steel.They are all used alone usually; or it is simple in order to realize deoxidation or desulfurization; performance is comparatively single; add-on is also larger; in order to realize the objects such as removal of impurities; usually also need repeatedly to add and use with gradation, thus in use also easily make to introduce other relatively large impurity in iron and steel, the final performance of iron and steel of giving brings certain impact.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of compound metallurgical and optimize qualitative change agent and optimize qualitative change method.
The technical scheme that the present invention solves the problems of the technologies described above is:
A kind of compound metallurgical optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 2-6%, potassium ion compound 19-25%, lanthanum based compound 8-12%, yttrium based compound 12-17%, strontium based compound 19-25%, cerium based compound 15-21%.
Be preferably, ionic calcium cpd 2-6%, potassium ion compound 24-25%, lanthanum based compound 11-12%, yttrium based compound 12-17%, strontium based compound 19-25%, cerium based compound 19-21%.
Be more preferably, ionic calcium cpd 4-6%, potassium ion compound 24-25%, lanthanum based compound 11-12%, yttrium based compound 12-17%, strontium based compound 22-25%, cerium based compound 19-21%.
More preferably, ionic calcium cpd 5-6%, potassium ion compound 24-25%, lanthanum based compound 11-12%, yttrium based compound 12-16%, strontium based compound 24-25%, cerium based compound 19-20%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical being optimized qualitative change agent joins in the smelting furnace being about to come out of the stove by the 0.1-0.4% of molten steel, molten iron or iron and steel liquid quality, maybe this compound metallurgical is optimized qualitative change agent to join in pouring ladle with molten steel, molten iron or the iron and steel liquid after coming out of the stove, or directly join in casting mold;
(2) by shaping to molten steel, molten iron or iron and steel liquid Quick pouring after process.
Contrast prior art, beneficial effect of the present invention is:
(1) metallurgy of the present invention optimizes qualitative change agent is compound qualitative change agent, and play the effects such as dehydrogenation, deoxygenation, desulfurization, dephosphorization, after process, the oxygen level of products obtained therefrom reaches below 30ppm, and desulfurization degree or dephosphorization rate all can reach more than 70% simultaneously.
(2) metallurgy optimization qualitative change agent of the present invention once adds, and the effect of each component is not simple superposition, under this proportioning, each component can be made to play synergy, not only better effects if, consumption also obviously reduces simultaneously, and therefore processing cost reduces, the impurity simultaneously brought in product also obviously reduces, and improves the performance of product.
(3) compound metallurgical optimization qualitative change agent of the present invention very easily mixes with molten steel etc., mixes simple and convenient, simplifies treatment process.
(4) compound metallurgical of the present invention is optimized after qualitative change agent processes molten steel etc., can reduce grain-size, improves the multinomial performances such as cast iron, the hardness of cast steel, intensity and ductility.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further details, but the present invention is not limited to this.
Embodiment 1
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 13%, potassium ion compound 14%, lanthanum based compound 8%, yttrium based compound 16%, strontium based compound 25%, cerium based compound 11%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.3kg being optimized qualitative change agent joins in the smelting molten steel stove of the 100kg sulfur-bearing 0.2% being about to come out of the stove;
(2) by shaping for the molten steel Quick pouring after process.
The oxygen level of the product obtained is 25ppm, sulphur content <0.05%, and desulfurization degree reaches 75%.
Embodiment 2
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 5%, potassium ion compound 24%, lanthanum based compound 12%, yttrium based compound 14%, strontium based compound 24%, cerium based compound 21%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.2kg being optimized qualitative change agent joins in pouring ladle with the molten iron of the 100kg phosphorous 0.4% after coming out of the stove;
(2) by shaping for the molten iron Quick pouring after process.
The oxygen level of the product obtained is 29ppm, and phosphorus content <0.09%, dephosphorization rate reaches 77%.
Embodiment 3
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 4%, potassium ion compound 25%, lanthanum based compound 11%, yttrium based compound 17%, strontium based compound 22%, cerium based compound 21%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.4kg being optimized qualitative change agent directly joins in the casting mold of the molten steel of 100kg sulfur-bearing 0.1%;
(2) by shaping for the molten steel Quick pouring after process.
The oxygen level of the product obtained is 28ppm, sulphur content <0.02%, and desulfurization degree reaches 80%.
Embodiment 4
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 6%, potassium ion compound 19%, lanthanum based compound 12%, yttrium based compound 17%, strontium based compound 25%, cerium based compound 21%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.1kg being optimized qualitative change agent joins in the molten iron smelting stove of the 100kg being about to come out of the stove phosphorous 0.3%;
(2) by shaping for the molten iron Quick pouring after process.
The oxygen level of the product obtained is 28ppm, sulphur content <0.05%, and desulfurization degree reaches 83%.
Embodiment 5
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 6%, potassium ion compound 25%, lanthanum based compound 12%, yttrium based compound 16%, strontium based compound 25%, cerium based compound 21%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.3kg is optimized qualitative change agent join be about to come out of the stove 100kg sulfur-bearing 0.08%, phosphorous 0.1% iron and steel liquid smelting furnace in;
(2) by shaping for the iron and steel liquid Quick pouring after process.
The oxygen level of the product obtained is 20ppm, sulphur content <0.01%, and phosphorus content <0.02%, desulfurization degree reaches 87%, and dephosphorization rate reaches 80%.
Embodiment 6
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 2%, potassium ion compound 24%, lanthanum based compound 12%, yttrium based compound 16%, strontium based compound 25%, cerium based compound 21%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.2kg is optimized qualitative change agent join be about to come out of the stove 100kg sulfur-bearing 0.2%, phosphorous 0.08% iron and steel liquid smelting furnace in;
(2) by shaping for the iron and steel liquid Quick pouring after process.
The oxygen level of the product obtained is 19ppm, sulphur content <0.06%, and phosphorus content <0.01%, desulfurization degree reaches 70%, and dephosphorization rate reaches 87%.
Embodiment 7
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 6%, potassium ion compound 25%, lanthanum based compound 12%, yttrium based compound 17%, strontium based compound 19%, cerium based compound 21%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.4kg is optimized qualitative change agent join be about to come out of the stove 100kg sulfur-bearing 0.06%, phosphorous 0.2% iron and steel liquid smelting furnace in;
(2) by shaping for the iron and steel liquid Quick pouring after process.
The oxygen level of the product obtained is 18ppm, sulphur content <0.01%, and phosphorus content <0.03%, desulfurization degree reaches 83%, and dephosphorization rate reaches 85%.
Embodiment 8
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 6%, potassium ion compound 25%, lanthanum based compound 12%, yttrium based compound 12%, strontium based compound 25%, cerium based compound 20%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.3kg being optimized qualitative change agent joins in the smelting molten steel stove of the 100kg sulfur-bearing 0.3% being about to come out of the stove;
(2) by shaping for the molten steel Quick pouring after process.
The oxygen level of the product obtained is 27ppm, sulphur content <0.09%, and desulfurization degree reaches 70%.
Embodiment 9
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 5%, potassium ion compound 24%, lanthanum based compound 11%, yttrium based compound 16%, strontium based compound 25%, cerium based compound 19%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.3kg being optimized qualitative change agent joins in the molten iron smelting stove of the 100kg being about to come out of the stove phosphorous 0.1%;
(2) by shaping for the molten iron Quick pouring after process.
The oxygen level of the product obtained is 24ppm, and phosphorus content <0.01%, dephosphorization rate reaches 90%.
Embodiment 10
The compound metallurgical of the present embodiment optimizes qualitative change agent, comprises following component by mass percentage: ionic calcium cpd 5%, potassium ion compound 25%, lanthanum based compound 11%, yttrium based compound 15%, strontium based compound 24%, cerium based compound 20%.
Above-mentioned compound metallurgical optimizes the optimization qualitative change method of qualitative change agent, comprises the steps:
(1) this compound metallurgical of 0.4kg is optimized qualitative change agent join be about to come out of the stove 100kg sulfur-bearing 0.2%, phosphorous 0.2% iron and steel liquid smelting furnace in;
(2) by shaping for the iron and steel liquid Quick pouring after process.
The oxygen level of the product obtained is 25ppm, sulphur content <0.05%, and phosphorus content <0.05%, desulfurization degree and dephosphorization rate all reach 75%.
Claims (5)
1. compound metallurgical optimizes a qualitative change agent, it is characterized in that the following component comprised by mass percentage: ionic calcium cpd 2-6%, potassium ion compound 19-25%, lanthanum based compound 8-12%, yttrium based compound 12-17%, strontium based compound 19-25%, cerium based compound 15-21%.
2. compound metallurgical according to claim 1 optimizes qualitative change agent, it is characterized in that the following component comprised by mass percentage: ionic calcium cpd 2-6%, potassium ion compound 24-25%, lanthanum based compound 11-12%, yttrium based compound 12-17%, strontium based compound 19-25%, cerium based compound 19-21%.
3. compound metallurgical according to claim 1 optimizes qualitative change agent, it is characterized in that the following component comprised by mass percentage: ionic calcium cpd 4-6%, potassium ion compound 24-25%, lanthanum based compound 11-12%, yttrium based compound 12-17%, strontium based compound 22-25%, cerium based compound 19-21%.
4. compound metallurgical according to claim 1 optimizes qualitative change agent, it is characterized in that the following component comprised by mass percentage: ionic calcium cpd 5-6%, potassium ion compound 24-25%, lanthanum based compound 11-12%, yttrium based compound 12-16%, strontium based compound 24-25%, cerium based compound 19-20%.
5. the compound metallurgical described in any one of Claims 1-4 optimizes the optimization qualitative change method of qualitative change agent, it is characterized in that comprising the steps:
(1) this compound metallurgical being optimized qualitative change agent joins in the smelting furnace being about to come out of the stove by the 0.1-0.4% of iron and steel liquid quality, maybe this compound metallurgical is optimized qualitative change agent and joins in pouring ladle with the iron and steel liquid after coming out of the stove, or directly join in casting mold;
(2) by shaping for the iron and steel liquid Quick pouring after process.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1718816A (en) * | 2005-07-29 | 2006-01-11 | 龙南县龙钇重稀土材料有限责任公司 | Yttrium base rare earth silicon calcium iron alloy, its preparation method and use |
| CN102061423A (en) * | 2011-01-05 | 2011-05-18 | 北京工业大学 | Compound processing method of boron-containing high-speed steel roller material |
| CN102312112A (en) * | 2011-10-25 | 2012-01-11 | 镇江忆诺唯记忆合金有限公司 | Composite modifier for improving thermal fatigue performances of aluminum-silicon alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1718816A (en) * | 2005-07-29 | 2006-01-11 | 龙南县龙钇重稀土材料有限责任公司 | Yttrium base rare earth silicon calcium iron alloy, its preparation method and use |
| CN102061423A (en) * | 2011-01-05 | 2011-05-18 | 北京工业大学 | Compound processing method of boron-containing high-speed steel roller material |
| CN102312112A (en) * | 2011-10-25 | 2012-01-11 | 镇江忆诺唯记忆合金有限公司 | Composite modifier for improving thermal fatigue performances of aluminum-silicon alloy |
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