CN1332254A - Novel molten steel purifier and its production process - Google Patents

Novel molten steel purifier and its production process Download PDF

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Publication number
CN1332254A
CN1332254A CN 01130616 CN01130616A CN1332254A CN 1332254 A CN1332254 A CN 1332254A CN 01130616 CN01130616 CN 01130616 CN 01130616 A CN01130616 A CN 01130616A CN 1332254 A CN1332254 A CN 1332254A
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molten steel
calcium
furnace
silicon
materials
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CN 01130616
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Chinese (zh)
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CN1268771C (en
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刘长福
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刘长福
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Priority to CN 01130616 priority Critical patent/CN1268771C/en
Publication of CN1332254A publication Critical patent/CN1332254A/en
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Publication of CN1268771C publication Critical patent/CN1268771C/en
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Expired - Fee Related legal-status Critical Current

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Abstract

The molten steel purifier is prepared through melting several common materials, including silica, lime and supplementary material, in a induction furnace with graphite crucible lining. The efficient molten steel purifier can absorb impurity from molten steel, increase the flowability of moltlen steel, improve the configuration of inclusion in steel and improve the quality of steel.

Description

Molten steel purifying agent and its production process
The invention belongs to the field of metallurgy, and particularly relates to a novel molten steel purifying agent and a production process thereof.
The existing molten steel cleaning agent is mainly made of CaC2The calcium oxide is prepared by reducing calcium oxide in a submerged arc furnace by using a carbonaceous reducing agent, the investment is large, the production process is complex, the cost is high, and harmful smoke is generated when molten steel is purified.
The invention aims to provide a novel molten steel purifying agent and a production process thereof aiming at the defects of the existing molten steel purifying agent.
The technical scheme for realizing the purpose of the invention is as follows: the product comprises the following components: 15-30% of silicon, 25-40% of calcium and 35-40% of oxygen; (the silicon is total silicon, namely the sum of simple substance silicon and equivalent silicon in the oxide; the calcium is total calcium,namely the sum of simple substance calcium and equivalent calcium in the oxide).
The production process of the deoxidizer comprises the following steps: wherein the main raw material of the deoxidizer is silica (component SiO)2) (ii) a Lime (component CaO) and other auxiliary materials can be added according to the situation, and the raw materials comprise the following components in percentage by weight: 35-50% of silica and 45-55% of lime. The raw materials in the proportion are uniformly mixed, put into an induction furnace with a crucible subjected to high-temperature graphitization as a lining for smelting, the furnace temperature is raised according to the furnace condition during smelting, all the materials in the furnace can be discharged from the furnace for casting after being melted, and the product is obtained after demoulding and crushing after cooling.
The main principle of the process is as follows: when the induction furnace is electrified, magnetic lines of force are generated, a magnetic field is generated in the graphite crucible, and the crucible is heated. The crucible in turn melts the material by heat transfer, producing the following reaction at high temperature.
CaSiO3Can effectively absorb Al in the molten steel2O3And the like, to achieve the function of purifying the molten steel.
The invention has the following advantages:
1. compared with the existing molten steel purifying agent, the invention has the advantages of low investment, low cost and low energy consumption.
2. The product has stable quality, is not easy to have pulverization phenomenon, and can be stored for a long time.
3. The product can promote the fluidity of molten steel, reduce the nodulation accidents and greatly reduce the pollution.
The examples of the invention are as follows: mixing silica, lime and other raw materials in percentage by weight, 35-50% of silica and 45-55% of lime, putting the mixture into an induction furnace with a graphite crucible as a lining for smelting, raising the temperature according to the smelting condition in the furnace, taking the materials out of the furnace for pouring after the materials in the furnace are completely molten, cooling and crushing the materials into products.
The smelting product comprises 15-30% of total silicon, 25-40% of total calcium and 35-50% of oxygen.
The molten steel purifying agent of the invention can absorb impurities in molten steel, increase the fluidity of the molten steel, improve the form of inclusions in steel, purify the molten steel and improve the steel quality.

Claims (4)

1. A new-type molten steel purifying agent is characterized by that it uses silica and lime as main raw materials.
2. A novel molten steel purifying agent as claimed in claim 1, wherein the main component of the product is CaSiO3(ii) a The composition is as follows: 15-30% of silicon, 25-40% of calcium and 35-40% of oxygen; (the silicon is total silicon, namely elemental silicon and equivalent silicon in oxideThe sum of (a); calcium is total calcium, i.e., the sum of elemental calcium and equivalent calcium in the oxide).
3. The production process of a novel molten steel cleansing agent according to claims 1 and 2, wherein the mainraw material of the molten steel cleansing agent is silica (component SiO)2) (ii) a Lime (ingredient CaO); the weight percentages of the raw materials are as follows: 35-50% of silica and 45-55% of lime. Uniformly mixing the raw materials in the proportion, and putting the mixture into an induction furnace for smelting, wherein the induction furnace is an induction furnace with a crucible subjected to high-temperature graphitization treatment as a lining; and carrying out temperature-raising smelting according to the furnace condition in the smelting process. When all the materials in the furnace are dissolved, the materials can be taken out of the furnace for casting, and after cooling, the materials are demolded and crushed into products.
4. A production facility of a novel molten steel purifying agent according to claims 1, 2 and 3 is an induction furnace lined with a graphite crucible for high-temperature graphitization treatment.
CN 01130616 2001-08-15 2001-08-15 Novel molten steel purifier and its production process Expired - Fee Related CN1268771C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01130616 CN1268771C (en) 2001-08-15 2001-08-15 Novel molten steel purifier and its production process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01130616 CN1268771C (en) 2001-08-15 2001-08-15 Novel molten steel purifier and its production process

Publications (2)

Publication Number Publication Date
CN1332254A true CN1332254A (en) 2002-01-23
CN1268771C CN1268771C (en) 2006-08-09

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CN 01130616 Expired - Fee Related CN1268771C (en) 2001-08-15 2001-08-15 Novel molten steel purifier and its production process

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CN (1) CN1268771C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102965472A (en) * 2012-11-27 2013-03-13 魏书林 Cast steel purifying agent and production 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
CN107245550A (en) * 2017-08-15 2017-10-13 大连环球矿产股份有限公司 A kind of floride-free low titanium molten steel scavenger(Refine material)Preparation method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR122015005471A2 (en) * 2011-03-15 2020-09-24 Peerless Worldwide, Llc EASY SYNTHESIS OF GRAPHENE, GRAPHEN DERIVATIVES AND ABRASIVE NANOPARTICLES AND THEIR SEVERAL USES, INCLUDING AS TRIBOLOGICALLY BENEFICIAL LUBRICATING ADDITIVES

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102965472A (en) * 2012-11-27 2013-03-13 魏书林 Cast steel purifying agent and production method thereof
CN102965472B (en) * 2012-11-27 2014-01-15 魏书林 Cast steel purifying agent and production 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
CN107245550A (en) * 2017-08-15 2017-10-13 大连环球矿产股份有限公司 A kind of floride-free low titanium molten steel scavenger(Refine material)Preparation method

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Publication number Publication date
CN1268771C (en) 2006-08-09

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Granted publication date: 20060809

Termination date: 20100815