CN1762908A - Magnesium composite material for metallurgy - Google Patents
Magnesium composite material for metallurgy Download PDFInfo
- Publication number
- CN1762908A CN1762908A CNA200510047092XA CN200510047092A CN1762908A CN 1762908 A CN1762908 A CN 1762908A CN A200510047092X A CNA200510047092X A CN A200510047092XA CN 200510047092 A CN200510047092 A CN 200510047092A CN 1762908 A CN1762908 A CN 1762908A
- Authority
- CN
- China
- Prior art keywords
- powder
- composite material
- magnesium
- fed
- magnesium composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention relates to composite magnesia material used in converter, electric furnace, open-hearth furnace, LF furnace and other refining furnace for steelmaking production. The composite magnesia material consists of light burnt magnesia powder, carbon, deoxidizer, slag melting agent and binding agent in certain weight proportion. It is produced through either dry ball pressing process or wet ball pressing process. The present invention has the advantages of increased carbon content of steel material, raised steelmaking temperature, lowered power consumption for steelmaking, raised steel product quality and lowered steelmaking cost.
Description
Technical Field
The invention relates to a magnesium composite material used in steelmaking production, which is applied to external refining furnaces such as converters, electric furnaces, open furnaces, LF, RH, AOD, VOD furnaces and the like.
Background
At present, due to the development of metallurgical steelmaking technology, the improvement of steelmaking quality is an important aspect, and new technical requirements for refractory materials are also provided. At present, when various smelting processes of different metallurgical furnace groups, especially the external refining process, are used for smelting ultra-low carbon steel and alloy steel, the conditions are very harsh, the corrosion to refractory materials is very serious, and the refractory material lining is not suitable.
Disclosure of Invention
The invention aims to provide a magnesium composite material for metallurgy, which has a protection effect on a steelmaking furnace lining in steelmaking production, can increase steelmaking temperature, reduce energy consumption in steelmaking and improve product quality.
The magnesium composite material for metallurgy is characterized by comprising the following components in parts by weight:
light-burned magnesium powder: 70-90
Carbon: 0-20
Deoxidizing agent: 0-15
Slag melting agent: 0-20
0-10 parts of a binding agent;
the light-burned magnesium powder is formed by light burning magnesite grade external ore and has the reaction formula of ；
The carbon element is one or more than two of carbon-containing substance graphite, coke powder, anthracite and dehydrated pitch;
the deoxidizer is one of metal magnesium powder, metal aluminum powder or iron powder;
the slag melting agent is fluorite.
The binding agent is one of water glass, phosphoric acid, sodium tripolyphosphate, sodium hexametaphosphate, sodium polymetaphosphate, magnesium chloride, phenolic resin or pulp waste liquid.
The production process of the magnesium composite material for metallurgy is characterized in that the process can be dry-method ball pressing or wet-method ball pressing; the dry-method ball pressing is carried out without adding a bonding agent.
The dry-method ball pressing process comprises the following steps: the block-shaped light burning powder and the additive are fed into a Raymond mill according to the required weight ratio to be finely ground into 280 meshes of 120 meshes, the finely ground powder is fed into a raw material bin and then fed into a dry-method ball press machine to be pressed into balls, and the balls are fed into a finished product bin to be packaged.
The wet ball pressing process comprises the following steps: the method comprises the following steps of feeding blocky light burning powder, carbon and additives into a Raymond mill according to a required weight ratio for fine grinding, feeding the finely ground powder into a wet mill, adding a binding agent according to a required weight ratio, mixing, feeding the uniformly mixed material into a compacting machine through a belt for preliminary pressing, feeding the material into a ball press for forming, feeding the material into a trolley for curing, and returning the crushed material after screening to the wet mill for re-pressing.
The magnesium composite material for metallurgy can also be prepared into powder or block according to the use requirement.
The production process of the light calcined powder prepared by light calcining magnesite grade traminer comprises the following steps:
1) crushing; crushing the outer-grade ore to below 200mm by a jaw crusher, crushing the outer-grade ore to 80-0mm by a cone crusher, and putting the outer-grade ore into a rotary kiln; screening anthracite by 0-3 mm;
2) lightly burning; sieving 80-0mm grade outer ore with vibrating screen to obtain 0-5mm fine material, decomposing fuel coal powder in vertical kiln or rotary kiln at 1100 + -10 deg.C, most of CO2The particles (e) fly out to obtain a lightly calcined lump material with reduced calcination and good activity.
3) Hot dressing; after the lightly-fired lump materials are cooled, the lightly-fired lump materials enter a high-frequency vibrating screen to screen out lump materials with the size of more than 20mm, the screened material with the size of 20mm enters a cylindrical high-frequency vibrating screen to be screened, and the MgO content of the lump materials with the size of less than 15mm can be increased to 90%.
4) Preparing materials; weighing various raw materials according to parts by weight, mixing, feeding the mixed raw materials into a Raymond mill for fine grinding, wherein the fine grinding fineness is different from 120 meshes and 280 meshes, and controlling the fineness of the raw materials according to the requirement of a user.
5) Pressing the ball; dry-method high-pressure ball pressing or wet-method ball pressing, and the process is the same as the process.
The magnesium composite material for metallurgy has the functions of:
1. the carbon content in the steel making is increased, and the steel making temperature is increased, so the energy consumption in the steel making is reduced.
2. It is the strongest desulfurizer in steel making, and has magical effects of dephosphorization and degasification while desulfurizing.
3. It protects the steel-making lining because it contains high amount of MgO, produces alkaline slag and resists SiO2And (4) corrosion of the furnace lining by the acid slag. The service life of the furnace can be prolonged by three times by using the magnesium composite FC balls.
4. It can greatly raise the quality of steel-making product, and because of using it, it can greatly reduce the auxiliary material added in the course of steel-making, reduce molten slag quantity and raise the quality of product.
5. The magnesium composite material for metallurgy is used, and waste resources, namely magnesite grade extra ore, are used, so that the production cost of steelmaking can be greatly reduced.
Detailed Description
Example 1:
the magnesium composite material for metallurgy comprises the following components: 80 parts of light-burned magnesium powder, 10 parts of graphite, 10 parts of metal magnesium powder and 12 parts of fluorite;
the production process is a dry-method ball pressing process, the blocky light burning powder and the additive are fed into a Raymond mill according to the required weight ratio and are finely ground into 280 meshes of 120 meshes, the finely ground powder enters a raw material bin, then the finely ground powder enters a dry-method ball pressing machine for ball pressing, and then the powder enters a finished product bin for packaging.
Example 2:
the magnesium composite material for metallurgy comprises the following components: the production process of the light-burned magnesia powder 70, the coke powder 20, the metal aluminum powder 15 and the fluorite 20 is the same as that of the embodiment 1 by adopting dry-methodball pressing.
Example 3:
the magnesium composite material for metallurgy comprises the following components: light-burned magnesium powder 90, anthracite 20, metal magnesium powder 2, fluorite 6 and water glass 4;
the production process is wet ball pressing, lump light burned powder, anthracite and additive are fed into Raymond mill according to the required weight ratio for fine grinding, the finely ground powder is fed into wet mill, then binding agent is added according to the required weight ratio for mixing, the uniformly mixed material is fed into compacting machine through belt for preliminary pressing, then fed into ball press for forming, the formed ball is fed into trolley for curing, and the sieved crushed material is returned into wet mill for re-ball pressing.
Example 4:
the magnesium composite material for metallurgy comprises the following components: light-burned magnesium powder 80, dehydrated asphalt 20, fluorite 15 and phosphoric acid 1;
the production process was the same as in example 3.
Example 5:
the magnesium composite material for metallurgy comprises the following components: 75 parts of light-burned magnesium powder, 20 parts of anthracite, 2 parts of metal iron powder, 10 parts of fluorite and 10 parts of sodium tripolyphosphate;
the production process was the same as in example 3.
Example 6:
the magnesium composite material for metallurgy comprises the following components: light-burned magnesium powder 85, metal aluminum powder 2, fluorite 10 and sodium hexametaphosphate 10;
the production process was the same as in example 3.
The magnesium composite material for metallurgy is used for ultra-low carbon steel.
Example 7:
the magnesium composite material for metallurgy comprises the following components: light-burned magnesium powder 85, anthracite 15, metal aluminum powder 2, fluorite 10 and magnesium chloride 8;
the production process was the same as in example 3.
Example 8:
the magnesium composite material for metallurgy comprises the following components: 85 parts of light-burned magnesium powder, 15 parts of anthracite, 2 parts of metal aluminum powder, 10 parts of fluorite and 8 parts of phenolic resin;
the production process was the same as in example 3.
Example 9:
the magnesium composite material for metallurgy comprises the following components: 80 parts of light-burned magnesium powder, 15 parts of anthracite, 10 parts of metal magnesium powder, 10 parts of fluorite and 5 parts of pulp waste liquid;
the production process was the same as in example 3.
Example 10:
the magnesium composite material for metallurgy comprises the following components: 80 parts of light-burned magnesium powder, 15 parts of anthracite, 10 parts of metal magnesium powder and 0.5 part of pulp waste liquid;
the production process was the same as in example 3.
The components of the above examples are proportioned according to the weight portion.
The quality indexes of the raw materials selected in the above embodiments are as follows:
the quality indexes of magnesite grade extra ore are that MgO 30-42% and SiO25-10％、CaO3-5；
The quality indexes of the light-burned magnesium powder are that MgO 85-90% and SiO22-5％、CaO1-2；
The quality indexes of the additive are as follows:
1. metal magnesium powder: mg%>98 and granularity less than 2mm
Metal aluminum powder: al% is more than 98 and the granularity is less than 2 mm;
2. and (3) graphite C: c% is more than 80; the granularity is less than 0.5 mm; the addition amount is as follows by weight: 3 to 15
3. Coke powder: c% is more than 80; the granularity is less than 0.5 mm; ash content%: less than 8; s% of sulfur: less than 0.5; volatile component%: less than 1.5; moisture%: less than 5; the addition amount is as follows by weight: 5 to 20
4. Bituminous coal: fixed carbon%: is more than 75; ash content%: less than 8; volatile component%: less than 7; s% of sulfur: less than 2; moisture%: less than 5; the addition amount is as follows by weight: 5-20;
5. fluorite CaF2：CaF2％＞80；SiO2Less than 5; granularity: less than 5 mm; the addition amount is as follows by weight: 5 to 12
6. Dewatering asphalt: c; softening point ℃: is more than 90; toluene-insoluble content%: less than 25%; ash content%: less than 0.5; moisture%: less than 5; the addition amount is as follows by weight: 6 to 20.
The binding agent can be selected from the following varieties:
1. water glass: na (Na)2O·nSiO2·mH2O；SiO2Percent is more than 24.6; modulus (M): 3.5-3.7 iron%: less than 0.02; water-insoluble substance%: less than 0.2; the addition amount is as follows by weight: 2 to 6
2. Phosphoric acid: h3PO4(ii) a Phosphoric acid%: is more than 85; oxide%: less than or equal to 0.001; sulfate%: iron content is less than or equal to 0.01%: less than or equal to 0.05; heavy metal%: less than or equal to 0.05; the addition amount is as follows by weight: 0.2 to 2
3. Sodium tripolyphosphate: na (Na)5P3O10(ii) a Sodium tripolyphosphate%: not less than 96; phosphorus pentoxide%: not less than 57;water-insoluble%: not less than 0.1; iron%: not less than 0.007; PH (1% solution): 9.2-10; whiteness: not less than 90; granularity: not less than 0.5 mm; the addition amount is as follows by weight: 0.1 to 1
4. Sodium hexametaphosphate: (NaPO)3)b(ii) a Sodium polymetaphosphate: (NaPO)3)n(ii) a Total phosphate (as P)2O5Calculated)%: not less than 68; % inactive phosphate: not less than 7.5; iron%: not less than 0.05; water-insoluble%: not less than 0.06; the addition amount is as follows by weight: 0.2 to 5
5. Magnesium chloride (brine): MgCL2·6H2O；MgCL2Percent: not less than 50; density g/cm: not less than 1.3; the addition amount is as follows by weight: 5 to 10
6. Phenolic resin: (CH)2OH) m; carbonization rate%: not less than 52; the addition amount is as follows by weight: 3 to 10
7. Pulp waste liquor: (calcium lignosulfonate); carboxymethyl cellulose: c6H10O5(ii) a The addition amount is as follows by weight: 0.5 to 5.
Claims (9)
1. The magnesium composite material for metallurgy is characterized by comprising the following components in parts by weight:
light-burned magnesium powder: 70-90
Carbon: 0-20
Deoxidizing agent: 0-15
Slag melting agent: 0-20
0-10 parts of binding agent.
2. The magnesium composite material as set forth in claim 1, wherein the light-burned magnesium powder is a light-burned magnesium powder obtained by light-burning magnesite-grade exotic ore.
3. The magnesium composite material for metallurgy according to claim 1, wherein the carbon is selected from one or more of graphite containing carbon substances, coke powder, anthracite and dehydrated pitch.
4. The magnesium composite material for metallurgy according to claim 1, wherein the deoxidizer is one of magnesium powder, aluminum powder or iron powder.
5. The magnesium composite material for metallurgy according to claim 1, wherein the slag melting agent is fluorite.
6. The magnesium composite material as claimed in claim 1, wherein the binder is one of water glass, phosphoric acid, sodium tripolyphosphate, sodium hexametaphosphate, sodium polymetaphosphate, magnesium chloride, phenolic resin, and pulp waste.
7. The process for producing the magnesium composite material for metallurgy according to claim 1, characterized in that the process is a dry-method ball pressing: the block-shaped light burning powder and the additive are fed into a Raymond mill according to the required weight ratio to be finely ground into 280 meshes of 120 meshes, the finely ground powder is fed into a raw material bin and then fed into a dry-method ball press machine to be pressed into balls, and the balls are fed into a finished product bin to be packaged.
8. The process for producing the magnesium composite material for metallurgy according to claim 1, wherein the process is wet ball pressing, the lump light burned powder, carbon and additives are fed into a Raymond mill according to the required weight ratio for fine grinding, the finely ground powder is fed into a wet mill, then a binding agent is added according to the required weight ratio for mixing, the uniformly mixed materials are fed into a compacting machine through a belt for preliminary pressing, then the mixture is fed into a ball press for forming, the balls are fed into a trolley for curing, and the crushed materials under the sieve are returned to the wet mill for ball re-pressing.
9. The magnesium composite material for metallurgy according to claim 1, wherein the magnesium composite material for metallurgy can be made into powder or block according to the use requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510047092XA CN100347132C (en) | 2005-08-23 | 2005-08-23 | Magnesium composite material for metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510047092XA CN100347132C (en) | 2005-08-23 | 2005-08-23 | Magnesium composite material for metallurgy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1762908A true CN1762908A (en) | 2006-04-26 |
| CN100347132C CN100347132C (en) | 2007-11-07 |
Family
ID=36747267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510047092XA Expired - Fee Related CN100347132C (en) | 2005-08-23 | 2005-08-23 | Magnesium composite material for metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100347132C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519311B (en) * | 2009-04-01 | 2011-08-31 | 武汉钢铁(集团)公司 | Magnesia-carbon gunning material for converter or electric furnace |
| CN102372486A (en) * | 2010-08-24 | 2012-03-14 | 鞍钢实业集团有限公司一钢分公司 | Low-cost magnesium tundish paint and its preparation method |
| CN102515799A (en) * | 2011-12-19 | 2012-06-27 | 青岛正望钢水控制股份有限公司 | Novel slag line material |
| CN102515805A (en) * | 2011-12-23 | 2012-06-27 | 中钢集团洛阳耐火材料研究院有限公司 | Magnesian refractory castable binding agent |
| CN102515802A (en) * | 2011-12-20 | 2012-06-27 | 徐州佳华新材料有限公司 | Method for preparing fused zirconia corundum feed basin |
| CN102584181A (en) * | 2012-03-20 | 2012-07-18 | 武汉科技大学 | Method for preparing periclase-silicon carbide-carbon composite powder through in-situ reaction |
| CN107841594A (en) * | 2017-10-12 | 2018-03-27 | 河钢股份有限公司承德分公司 | A kind of method of refining for reducing ladle liner and corroding |
| CN108002847A (en) * | 2016-10-28 | 2018-05-08 | 河南智联寰宇知识产权运营有限公司 | Refractory brick containing forsterite and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035017C (en) * | 1994-04-21 | 1997-05-28 | 鞍山钢铁公司 | Slag fomation agent for adding magnesium in magnesium balls for smelting steel |
-
2005
- 2005-08-23 CN CNB200510047092XA patent/CN100347132C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519311B (en) * | 2009-04-01 | 2011-08-31 | 武汉钢铁(集团)公司 | Magnesia-carbon gunning material for converter or electric furnace |
| CN102372486A (en) * | 2010-08-24 | 2012-03-14 | 鞍钢实业集团有限公司一钢分公司 | Low-cost magnesium tundish paint and its preparation method |
| CN102372486B (en) * | 2010-08-24 | 2015-01-21 | 鞍钢实业集团有限公司原燃料生产服务分公司 | Low-cost magnesium tundish paint and its preparation method |
| CN102515799A (en) * | 2011-12-19 | 2012-06-27 | 青岛正望钢水控制股份有限公司 | Novel slag line material |
| CN102515802A (en) * | 2011-12-20 | 2012-06-27 | 徐州佳华新材料有限公司 | Method for preparing fused zirconia corundum feed basin |
| CN102515805A (en) * | 2011-12-23 | 2012-06-27 | 中钢集团洛阳耐火材料研究院有限公司 | Magnesian refractory castable binding agent |
| CN102584181A (en) * | 2012-03-20 | 2012-07-18 | 武汉科技大学 | Method for preparing periclase-silicon carbide-carbon composite powder through in-situ reaction |
| CN108002847A (en) * | 2016-10-28 | 2018-05-08 | 河南智联寰宇知识产权运营有限公司 | Refractory brick containing forsterite and preparation method thereof |
| CN107841594A (en) * | 2017-10-12 | 2018-03-27 | 河钢股份有限公司承德分公司 | A kind of method of refining for reducing ladle liner and corroding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100347132C (en) | 2007-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1762908A (en) | Magnesium composite material for metallurgy | |
| KR100958987B1 (en) | Lime-based additive for steel smelting and the preparation method thereof | |
| CN101172605B (en) | Method for producing calcium carbide | |
| CN107254585B (en) | A method of recycling zinc, indium, iron, gallium from iron vitriol slag | |
| CN104131130B (en) | Converter final slag modifier and application thereof | |
| CN107299218B (en) | A kind of iron vitriol slag desulfurization pelletizing, preparation and its application | |
| CN106544464A (en) | Environment-friendly type splashing slag in converter material and preparation method thereof | |
| CN1189409C (en) | Method for producing glass and glass produced thereby | |
| RU2264435C2 (en) | Coal briquettes for reductive melting process and a method for manufacture thereof | |
| CN107267745B (en) | The extracting method of valuable element in a kind of iron vitriol slag | |
| CN1720340A (en) | Cold briquetting and pelletisation | |
| CN1429920A (en) | Application of limonite as bedding material in method for producing pellet agglomerate | |
| CN1821429A (en) | Method for producing aluminium enriched slag for extracting aluminium oxide and silicon-iron alloy | |
| CN103451421A (en) | Preparation method of blast furnace sludge pre-reduced pellet | |
| CN113481346B (en) | Low-cost composite efficient heating agent for converter and preparation method thereof | |
| CN1158903A (en) | Industrial production method of cold-cured pellet used directly for iron and steel smelting | |
| KR101185362B1 (en) | A production method of briquette using waste materials of steel making | |
| Pal et al. | Development of carbon composite iron ore micropellets by using the microfines of iron ore and carbon-bearing materials in iron making | |
| CN110054225A (en) | A kind of preparation method of oxygen carrier | |
| CN102633515A (en) | Magnesium-forsterite synthetic sand and preparation method thereof | |
| RU2352648C2 (en) | Charge for manufacturing of bricks for metallurgical production | |
| CN111074067B (en) | Preparation method of carbonized sludge particles for iron ore powder sintering additive | |
| CN106868247B (en) | A kind of phosphorous pig iron carbon increasing method | |
| RU2462521C2 (en) | Charge to obtain briquettes for blast-furnace and cupola production of cast iron | |
| CN107267753B (en) | A kind of additive and pelletizing process for iron vitriol slag recycling pelletizing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071107 Termination date: 20110823 |