CN1278559A - Multi-component Si-Ca-Ba deoxidizer and desulfurizer for steel smelting - Google Patents
Multi-component Si-Ca-Ba deoxidizer and desulfurizer for steel smelting Download PDFInfo
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- CN1278559A CN1278559A CN00110542A CN00110542A CN1278559A CN 1278559 A CN1278559 A CN 1278559A CN 00110542 A CN00110542 A CN 00110542A CN 00110542 A CN00110542 A CN 00110542A CN 1278559 A CN1278559 A CN 1278559A
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- desulfurizer
- deoxidizer
- smelting
- barium
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
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Abstract
The present invention discloses a kink of silicon-calcium-barium multi-component deoxidant and desulfurizer for smelting steel. It is characterized by that its production process includes the following steps: mixing quartz sand, barium ore, lime and carbon reducing agent according to a certain proportion, adding said mixture to graphite crucible placed in the intermediate-frequency induction furnace with magnesium lining, heating to 1700-1780 deg.c, smelting for 1.5-2 hr, melting all material, refining for 10-20 min to obtain liquid deoxidant and desulfarizer, pouring it into ingot mould, cooling and breaking to form block. Said invented product possesses excellent deoxidation and desulfurizing effect and its cost is low.
Description
The invention relates to a deoxidizer and a desulfurizer for steel smelting, in particular to a silicon-calcium-barium multi-element deoxidizer and a desulfurizer for steel smelting.
A deoxidizing agent and a desulfurizing agent are added during smelting steel. The silicon-calcium-barium-iron alloy produced by the submerged arc furnace is one of a deoxidizing agent and a desulfurizing agent used in steel smelting at present, the power consumption is up to 14300-14900 kW.h/t, the production cost is high, the process is complex, and the economic benefit is poor.
The invention aims to provide a deoxidizer and a desulfurizer for steel smelting, which have twice higher calcium content than a silicon-calcium-barium-iron alloy, good deoxidizing and desulfurizing effects, low power consumption during smelting (2800-3900 kW.h/t), low production cost and good economic benefit.
In order to realize the purpose, the invention mixes quartz sand, barium ore, lime and carbonaceous reducing agent according to a certain proportion, then adds the mixture into a graphite crucible arranged in a medium-frequency induction furnace lined with a magnesium lining, heats, melts and refines the mixture.
The deoxidizer and the desulfurizer for smelting the steel have the calcium content twice higher than that of a silicon-calcium-barium-iron alloy, have good deoxidation and desulfurization effects, improve the fluidity of the steel, improve the quality of the steel, have low power consumption (2800-3900 kW.h/t) during smelting, are only 1/4 of the power consumption for preparing the silicon-calcium-barium-iron alloy deoxidizer by a submerged arc furnace, are convenient to operate, have low production cost and have better economic benefit.
The present invention will now be described with reference to examples
The raw materials used by the invention are quartz sand, barium ore, lime and carbonaceous reducing agent, and the following main reactions are generated under the action of high temperature:
the raw materials used by the invention and the proportion (weight percent) are as follows:
quartz Sand (SiO)2＞97％) 30～45％
Barium ore (BaSO)4Or BaCO385～96％) 3～20％
43-58% of lime (CaO 85-95%)
3-9% of carbonaceous reducing agent (fixed carbon is 78-86%)
NaCl 0．5～1．0％
The preparation process comprises the steps of weighing the raw materials according to the proportion, uniformly mixing, adding a part of mixed materials into a graphite crucible placed in a medium-frequency induction furnace lined with a magnesium furnace lining, electrifying and heating the medium-frequency induction furnace to 1700-1780 ℃, smelting for 1.5-2 hours, adding the mixed materials while melting the added mixed materials, refining for 10-20 minutes after all the mixed materials are completely melted to obtain liquid deoxidizer and desulfurizer, pouring the liquid deoxidizer and desulfurizer into an ingot mold, cooling and crushing into blocks.
The prepared deoxidizer and desulfurizer comprises the components ofBa 1-l 6%, Ca 26-38%, Si 18-28%, CaO 16-18%, SiO212～15％、BaO1～5％、C＜1．1％、Al＜2．5％、P＜0．04％、S＜0．11％。
Example (b):
the method comprises the following steps of preparing silicon-calcium-barium multi-element deoxidizer and desulfurizer for smelting steel by adopting a 250KW intermediate frequency induction furnace, firstly laying 1-2 layers of asbestos cloth at the bottom of the intermediate frequency induction furnace and on the inner side of an induction coil, then mixing proportionally weighed magnesia, putting the mixture into the furnace layer by layer, knotting a furnace lining by adopting a furnace lining tool, then feeding electricity to dry the furnace, putting a graphite crucible into the furnace, and tightly plugging the graphite crucible and the furnace lining by coke powder; weighing 44kg of quartz sand, 11.5 kg of barium ore, 50kg of lime, 6.5 kg of blue carbon and 0.6 kg of NaCl0, uniformly mixing, adding a part of mixed materials into a graphite crucible, electrifying and heating, heating to 1700-1780 ℃, smelting for 1.5 hours, adding the mixed materials while melting the mixed materials added into the graphite crucible in the smelting process, refining for 15 minutes at 1700-1780 ℃ after the mixed materials are completely melted, and obtaining 70kg of liquid deoxidizer and desulfurizer; pouring liquid deoxidizer and desulfurizer into ingot mold, cooling, and crushing into blocks.
The power consumption in the preparation is 2800 kW.h/t; the obtained deoxidizer and desulfurizer contains Ba8.07%, Ca33.8%, and Si22 by analysis.13％、Ca17．5％、SiO214．43％、BaO2．46％、P0．023％、Al0．76％、C0．71％、S0．06％。
Claims (2)
1. The silicon-calcium-barium multi-element deoxidizer desulfurizer for steel smelting is characterized by comprising the following raw materials in percentage by weight:
quartz Sand (SiO)2＞97％) 30～45％
Barium ore (BaSO)4Or BaCO385～96％) 3～20％
43-58% of lime (CaO 85-95%)
3-9% of carbonaceous reducing agent (fixed carbon is 78-86%)
NaCl 0．5～1．0％
The preparation process comprises the steps of weighing the raw materials according to the proportion, uniformly mixing, adding a part of mixed materials into a graphite crucible placed in a medium-frequency induction furnace lined with a magnesium furnace lining, electrifying and heating the medium-frequency induction furnace to 1700-1780 ℃, smelting for 1.5-2 hours, adding the mixed materials while melting the added mixed materials, refining for 10-20 minutes after all the mixed materials are completely melted to obtain liquid deoxidizer and desulfurizer, pouring the liquid deoxidizer and desulfurizer into an ingot mold, cooling and crushing into blocks.
2. The multi-element Si-Ca-Ba deoxidizer and desulfurizer for steel smelting according to claim 1, wherein the multi-element Si-Ca-Ba deoxidizer and desulfurizer are characterized in that:
the prepared deoxidizer and desulfurizer comprises the components of Ba 1-16%, Ca 26-38%, Si 18-28%, CaO 16-18%, SiO212～15％、BaO1～5％、C＜1．1％、Al＜2．5％、P＜0．04％。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00110542A CN1120891C (en) | 2000-06-14 | 2000-06-14 | Multi-component Si-Ca-Ba deoxidizer and desulfurizer for steel smelting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00110542A CN1120891C (en) | 2000-06-14 | 2000-06-14 | Multi-component Si-Ca-Ba deoxidizer and desulfurizer for steel smelting |
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| Publication Number | Publication Date |
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| CN1278559A true CN1278559A (en) | 2001-01-03 |
| CN1120891C CN1120891C (en) | 2003-09-10 |
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| CN00110542A Expired - Fee Related CN1120891C (en) | 2000-06-14 | 2000-06-14 | Multi-component Si-Ca-Ba deoxidizer and desulfurizer for steel smelting |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355912C (en) * | 2005-07-04 | 2007-12-19 | 李春德 | Silicon-calcium-barium ferroalloy in use for steel making |
| CN100535133C (en) * | 2006-12-30 | 2009-09-02 | 李继宗 | Steel making lime additive and its production process |
| CN101553583B (en) * | 2006-12-08 | 2011-06-15 | 住友金属工业株式会社 | Process for producing extra-low-sulfur low-nitrogen high-cleanliness steel through melting |
| CN103014234A (en) * | 2012-12-04 | 2013-04-03 | 纪征礼 | Method for smelting silicon-calcium-barium and silicon-calcium-barium product manufactured by same |
| CN103184313A (en) * | 2013-03-29 | 2013-07-03 | 河南科技大学 | Steel making composite deoxygenation agent and preparation method thereof |
| CN111363921A (en) * | 2020-04-09 | 2020-07-03 | 石嘴山市宝马兴庆特种合金有限公司 | Preparation method of silicon-barium-calcium series multi-element alloy |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100339491C (en) * | 2006-01-26 | 2007-09-26 | 吴兴明 | Method for processing raw materials for producing ferra silicon alloy, silico-calcium and monocrystalline silicon |
-
2000
- 2000-06-14 CN CN00110542A patent/CN1120891C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355912C (en) * | 2005-07-04 | 2007-12-19 | 李春德 | Silicon-calcium-barium ferroalloy in use for steel making |
| CN101553583B (en) * | 2006-12-08 | 2011-06-15 | 住友金属工业株式会社 | Process for producing extra-low-sulfur low-nitrogen high-cleanliness steel through melting |
| CN100535133C (en) * | 2006-12-30 | 2009-09-02 | 李继宗 | Steel making lime additive and its production process |
| CN103014234A (en) * | 2012-12-04 | 2013-04-03 | 纪征礼 | Method for smelting silicon-calcium-barium and silicon-calcium-barium product manufactured by same |
| CN103014234B (en) * | 2012-12-04 | 2014-04-30 | 纪征礼 | Method for smelting silicon-calcium-barium and silicon-calcium-barium product manufactured by same |
| CN103184313A (en) * | 2013-03-29 | 2013-07-03 | 河南科技大学 | Steel making composite deoxygenation agent and preparation method thereof |
| CN111363921A (en) * | 2020-04-09 | 2020-07-03 | 石嘴山市宝马兴庆特种合金有限公司 | Preparation method of silicon-barium-calcium series multi-element alloy |
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| Publication number | Publication date |
|---|---|
| CN1120891C (en) | 2003-09-10 |
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Address after: 117022 Liaoning Province, Benxi City Mingshan District Cultural Road No. 23 4 unit 4 floor No. 1 Co-patentee after: Li Yi Patentee after: Li Chunde Co-patentee after: Li Gang Address before: 117022 Liaoning province and Benxi City Mingshan District Street 4 Co-patentee before: Li Yi Patentee before: Li Chunde Co-patentee before: Li Gang |
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