CN1322848A - Compound Si-Ca-Ba-Mg deoxidant producing process and equipment - Google Patents
Compound Si-Ca-Ba-Mg deoxidant producing process and equipment Download PDFInfo
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- CN1322848A CN1322848A CN 01115450 CN01115450A CN1322848A CN 1322848 A CN1322848 A CN 1322848A CN 01115450 CN01115450 CN 01115450 CN 01115450 A CN01115450 A CN 01115450A CN 1322848 A CN1322848 A CN 1322848A
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- barium
- calcium
- silicon
- barite
- dolomite
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The compound deoxidant is produced with common materials and through reduction in MF furnace and is used mianly for final deoxidation of molten steel. It is produced by using silica, lime, dolomite and barite as main material, fluotrite, granular coke, etc. as supplementary material, and through mixing, smelting, casting, and other steps. The compound deoxidant for deoxidation and desulfurization may be used absorb impurity in steel, raise molten steel flowability, improve the form of foreign material in steel, purity molten steel and raise steel quality.
Description
The invention belongs to the field of production of deoxidizers in metallurgical industry, and relates to a production process of a silicon-calcium-barium-magnesium composite deoxidizer and equipment used by the production process.
At present, the production process of silicon-calcium-barium-magnesium in China mainly uses a submerged arc furnace for production, the silicon-calcium-barium-magnesium produced by the method has high power consumption and unstable product quality, and the silicon-calcium-barium-magnesium produced by the medium frequency furnace with a graphite crucible as a lining greatly reduces the power consumption and has stable product quality.
With the development of the steel market, the production of low-cost silicon-calcium-barium-magnesium is always a desire of production enterprises, and the inventor provides a production process of the silicon-calcium-barium-magnesium compound deoxidizer and equipment used by the production process under the condition.
The invention aims to provide a smelting method of a silicon-calcium-barium-magnesium compound deoxidizer with stable production quality and reduced cost, which mainly comprises the improvement of a smelting process and equipment of the silicon-calcium-barium-magnesium compound deoxidizer.
The invention is realized by the following steps: the production process of the silicon-calcium-barium-magnesium alloy comprises the working procedures of crushing raw materials, uniformly mixing, smelting, heating, packaging, warehousing and the like. The method is characterized in that: the raw materials comprise silica, lime, barite, dolomite, fluorite, coke particles and the like, and the weight percentages of the raw materials are as follows: lime: barite: dolomite: fluorite: the scorched particles = 2-4: 3-5: 2-4: 1.
The production process comprises the following steps: 1. selecting raw materials; 2. preparing materials; 3. smelting; 4. and discharging and casting. 1. Raw materials are selected: the raw materials include silica, lime, barite, dolomite, fluorite and coke
Granules and other five raw materials. The raw materials are as follows: silica: SiO 22More than 97% lime: CaO>80% barite: BaSO4Greater than 90% dolomite: MgO>15% fluorite: CaF2More than 80% of coke particles: fixed carbon is more than 80% 2, and the ingredients are as follows: the proportion of the ingredients can be properly adjusted according to the content of silicon, calcium, barium and magnesium in the silicon-calcium-barium-magnesium composite deoxidizer to be produced. After the materials are mixed according to the mixture ratio, the mixture is put into a crusher to be crushed into powder with the granularity of 80-120 meshes for standby. 3. Smelting: and (3) putting the crushed raw materials into an intermediate frequency furnace with an electrode graphite crucible lining, taking the fact that the furnace opening is filled with the raw materials as a standard, raising the temperature of the furnace to 1400 ℃, preserving the heat for 1 hour, and discharging the furnace. The chemical reaction was carried out as follows (1400 degrees): 4. discharging and casting: after the raw materials are completely melted, the intermediate frequency furnace is inclined, and then liquid in the furnace is poured into the ingot mold.
The improvement of the smelting equipment of the invention is that an intermediate frequency furnace with an electrode graphite crucible as a lining is used. It is characterized in that the crucible is made by hollowing the graphite electrode.
The invention has the advantages that: the raw materials are added at one time according to an accurate mixing ratio, so that the product quality is stable, unnecessary procedures are reduced, the power consumption is reduced, and the yield is improved.
Example (c): production of calcium containing more than 25% is required; more than 15 percent of barium; silicon containing 5 or more magnesiumThe composite calcium-barium-magnesium deoxidant is prepared with SiO as the first material250kg of silica>97%; CaO is more than80 percent, and 50kg of lime; BaSO450kg of more than 90 percent barite; MgO is more than 15 percent and 50kg of dolomite; CaF220kg of fluorite with the weight percentage of more than 80 percent; 20kg of coke particles with fixed carbon more than 80 percent. The raw materials are mixed evenly and put into a crusher to be crushed into powder with the granularity of 80-120 meshes, the crushed raw materials are put into an intermediate frequency furnace with an electrode graphite crucible lining, the furnace temperature is raised to 1400 ℃ and then the temperature is kept for 1 hour, and then the product is obtained after discharging. The product produced in this example was assayed and found to contain 26.38% calcium, 16.32% barium, and 8.21% magnesium.
Claims (2)
1. A production process of a silicon-calcium-barium-magnesium compound deoxidizer comprises the following steps: the method comprises the procedures of raw material selection, proportioning, smelting, tapping and casting and the like, and is characterized in that: the raw materials comprise silica, lime, barite, dolomite, fluorite, coke particles and the like, and the weight percentage is as follows: silica: lime: barite: dolomite, fluorite: scorched particles = 2-4: 3-5: 2-4: 1
2. A special production device of a silicon-calcium-barium-magnesium composite deoxidizer comprises: it is characterized in that the device is an intermediate frequency furnace taking an electrode graphite crucible as a lining. The crucible is characterized in that the crucible is formed by machining electrode graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011154500A CN1150340C (en) | 2001-04-26 | 2001-04-26 | Compound Si-Ca-Ba-Mg deoxidant producing process and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011154500A CN1150340C (en) | 2001-04-26 | 2001-04-26 | Compound Si-Ca-Ba-Mg deoxidant producing process and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1322848A true CN1322848A (en) | 2001-11-21 |
| CN1150340C CN1150340C (en) | 2004-05-19 |
Family
ID=4661982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011154500A Expired - Fee Related CN1150340C (en) | 2001-04-26 | 2001-04-26 | Compound Si-Ca-Ba-Mg deoxidant producing process and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1150340C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114107607A (en) * | 2021-11-13 | 2022-03-01 | 干将新材料有限公司 | Deoxidizing agent and its processing method and equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462445C (en) * | 2006-05-18 | 2009-02-18 | 北京世纪锦鸿科贸有限责任公司 | Low-aluminium composite deoxidant containing magnesium |
-
2001
- 2001-04-26 CN CNB011154500A patent/CN1150340C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114107607A (en) * | 2021-11-13 | 2022-03-01 | 干将新材料有限公司 | Deoxidizing agent and its processing method and equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1150340C (en) | 2004-05-19 |
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