CN111807724A - Additive for producing fused magnesia and use method thereof - Google Patents
Additive for producing fused magnesia and use method thereof Download PDFInfo
- Publication number
- CN111807724A CN111807724A CN202010563963.8A CN202010563963A CN111807724A CN 111807724 A CN111807724 A CN 111807724A CN 202010563963 A CN202010563963 A CN 202010563963A CN 111807724 A CN111807724 A CN 111807724A
- Authority
- CN
- China
- Prior art keywords
- parts
- additive
- mesh
- powder
- felt
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/102—Preheating, burning calcining or cooling of magnesia, e.g. dead burning
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention relates to an additive for producing fused magnesia, which comprises, by weight, 15-35 parts of 500-mesh carbon fiber powder, 15-25 parts of 200-mesh titanium carbonitride powder, 15-25 parts of 200-mesh titanium oxide powder, 15-25 parts of 200-mesh zirconium oxide powder and 8-15 parts of 200-mesh boron oxide powder. The additive is added in an amount which is 2-8% of the weight of the magnesium oxide, the raw materials are loaded in layers, a felt is laid between every two layers of materials, and the additive is sprayed on the felt. The additive of the invention has low cost and does not contain expensive rare earth oxide. The superfine powder is rapidly smelted, so that impurities are effectively removed and the purity of the magnesite is improved. The melting point of the system is reduced, and the melting time is reduced.
Description
Technical Field
The invention relates to the field of refractory materials, in particular to an additive for producing fused magnesia.
Background
The fused magnesia is an important industrial raw material, has simple production process, and is prepared by mainly taking a magnesia press ball material as a raw material and adopting an electric arc furnace melting method. Suitable chemical additives improve the performance and efficiency of the magnesite.
The function of some additives is only focused on lowering the melting point of the system, impurities are not removed in a targeted manner, and the content of elements such as sodium, calcium, silicon and the like is increased and enriched, so that the ratio of Ca/Si is reduced, and the requirement that the common industrial application is more than 2 is not met.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the additive for producing the fused magnesia, which effectively removes impurities and improves the purity of the magnesia.
In order to achieve the purpose, the invention adopts the following technical scheme:
an additive for producing fused magnesia comprises, by weight, 15-35 parts of 500-mesh carbon fiber powder, 15-25 parts of 200-mesh titanium carbonitride powder, 15-25 parts of 200-mesh titanium oxide powder, 15-25 parts of 200-mesh zirconium oxide powder and 8-15 parts of 200-mesh boron oxide powder.
The additive for producing electrically molten magnesia is added in the amount of 2-8 wt% of magnesia, and the additive is filled in layers while felt is spread between layers and sprayed onto the felt.
The area of each layer of felt covering the material layer is more than 80 percent.
Compared with the prior art, the invention has the beneficial effects that:
the additive of the invention has low cost and does not contain expensive rare earth oxide. The superfine powder is rapidly smelted, so that impurities are effectively removed and the purity of the magnesite is improved. The melting point of the system is reduced, and the melting time is reduced.
Detailed Description
The invention is further illustrated by the following examples:
the following examples describe the invention in detail. These examples are merely illustrative of the best embodiments of the present invention and do not limit the scope of the invention.
An additive for producing fused magnesia comprises, by weight, 15-35 parts of 500-mesh carbon fiber powder, 15-25 parts of 200-mesh titanium carbonitride powder, 15-25 parts of 200-mesh titanium oxide powder, 15-25 parts of 200-mesh zirconium oxide powder and 8-15 parts of 200-mesh boron oxide powder.
The additive for producing electrically molten magnesia is added in the amount of 2-8 wt% of magnesia, and the additive is filled in layers while felt is spread between layers and sprayed onto the felt.
The felt covers more than 80% of the material layer.
Example 1
An additive for producing fused magnesia comprises, by weight, 15 parts of 500-mesh carbon fiber powder, 25 parts of 200-mesh titanium carbonitride powder, 15 parts of 200-mesh titanium oxide powder, 25 parts of 200-mesh zirconium oxide powder and 15 parts of 200-mesh boron oxide powder.
The additive for producing electrically molten magnesia is added in 5.5 wt% of magnesia, and the material is charged in 10 layers in an electric arc furnace, and felt with thickness of 2mm is laid between each layer of material and covering material layer in over 80% of surface area, and 1/9 is sprayed onto the felt.
Smelting according to a conventional process, wherein the Ca/Si ratio of the finished fused magnesia is more than 3.5.
Example 2
An additive for producing fused magnesia comprises, by weight, 25 parts of 500-mesh carbon fiber powder, 15 parts of 200-mesh titanium carbonitride powder, 20 parts of 200-mesh titanium oxide powder, 20 parts of 200-mesh zirconium oxide powder and 10 parts of 200-mesh boron oxide powder.
An additive for producing fused magnesia is used, the additive mass is 6.5% of the mass of magnesium oxide, when charging raw materials in an electric arc furnace, the raw materials are charged in 9 layers, a felt is laid between each layer of raw materials, the thickness of the felt is 1.5mm, the surface area of each layer of felt covering material layer is more than 80%, and 1/8 of the additive is sprayed on the felt.
Smelting according to a conventional process, wherein the Ca/Si ratio of the finished fused magnesia is more than 3.0.
Example 3
An additive for producing fused magnesia comprises, by weight, 20 parts of 500-mesh carbon fiber powder, 20 parts of 200-mesh titanium carbonitride powder, 15 parts of 200-mesh titanium oxide powder, 15 parts of 200-mesh zirconium oxide powder and 8 parts of 200-mesh boron oxide powder.
An additive for producing fused magnesia is used, the additive mass is 6% of the mass of magnesium oxide, when the raw materials of an electric arc furnace are charged, the raw materials are charged in 13 layers, a felt is laid between each layer of the raw materials, the thickness of the felt is 1mm, the surface area of a covering material layer of each layer of the felt is more than 80%, and 1/12 of the additive is sprayed on the felt.
Smelting according to a conventional process, wherein the Ca/Si ratio of the finished fused magnesia is more than 2.5.
Example 4
An additive for producing fused magnesia comprises, by weight, 30 parts of 500-mesh carbon fiber powder, 18 parts of 200-mesh titanium carbonitride powder, 20 parts of 200-mesh titanium oxide powder, 18 parts of 200-mesh zirconium oxide powder and 12 parts of 200-mesh boron oxide powder.
The additive for producing electrically molten magnesia is added in 7 wt% of magnesia, and is charged in 9 layers in an electric arc furnace with felt layer of 2.5mm thickness and covering material layer of over 80% in surface area, and 1/8 is sprayed onto the felt.
Smelting according to a conventional process, wherein the Ca/Si ratio of the finished fused magnesia is more than 3.5.
Claims (3)
1. An additive for producing fused magnesia is characterized by comprising, by weight, 15-35 parts of 500-mesh carbon fiber powder, 15-25 parts of 200-mesh titanium carbonitride powder, 15-25 parts of 200-mesh titanium oxide powder, 15-25 parts of 200-mesh zirconium oxide powder and 8-15 parts of 200-mesh boron oxide powder.
2. The use method of the additive for producing fused magnesia according to claim 1, wherein the additive is added in an amount of 2 to 8% by mass based on the mass of magnesium oxide, the raw materials are charged in layers, a felt is laid between each layer of materials, and the additive is sprayed on the felt.
3. The use method of an additive for fused magnesite according to claim 2, wherein each layer of felt covers more than 80% of the layer area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010563963.8A CN111807724B (en) | 2020-06-19 | 2020-06-19 | Additive for producing fused magnesia and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010563963.8A CN111807724B (en) | 2020-06-19 | 2020-06-19 | Additive for producing fused magnesia and use method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111807724A true CN111807724A (en) | 2020-10-23 |
| CN111807724B CN111807724B (en) | 2022-04-19 |
Family
ID=72845809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010563963.8A Active CN111807724B (en) | 2020-06-19 | 2020-06-19 | Additive for producing fused magnesia and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111807724B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05186258A (en) * | 1992-01-08 | 1993-07-27 | Kurosaki Refract Co Ltd | Refractory brick containing low-silica magnesia clinker |
| JPH06256060A (en) * | 1993-02-26 | 1994-09-13 | Touken Sangyo:Kk | Magenesia partially stabilized zirconia sintered product |
| CN1944330A (en) * | 2006-10-19 | 2007-04-11 | 武汉科技大学 | Slide board refractory containing titanium carbo-nitride and its preparing method |
| CN103896502A (en) * | 2014-03-07 | 2014-07-02 | 华东理工大学 | Additive for producing high-purity fused magnesite |
| CN108585553A (en) * | 2018-05-09 | 2018-09-28 | 肃北镁弘科技有限公司 | A kind of preparation method of the big crystallization fused magnesite of low silicon high calcium |
| CN110128154A (en) * | 2019-05-29 | 2019-08-16 | 海城利尔麦格西塔材料有限公司 | A kind of low carbon magnesia carbon brick and preparation method adding titanium carbonitride |
-
2020
- 2020-06-19 CN CN202010563963.8A patent/CN111807724B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05186258A (en) * | 1992-01-08 | 1993-07-27 | Kurosaki Refract Co Ltd | Refractory brick containing low-silica magnesia clinker |
| JPH06256060A (en) * | 1993-02-26 | 1994-09-13 | Touken Sangyo:Kk | Magenesia partially stabilized zirconia sintered product |
| CN1944330A (en) * | 2006-10-19 | 2007-04-11 | 武汉科技大学 | Slide board refractory containing titanium carbo-nitride and its preparing method |
| CN103896502A (en) * | 2014-03-07 | 2014-07-02 | 华东理工大学 | Additive for producing high-purity fused magnesite |
| CN108585553A (en) * | 2018-05-09 | 2018-09-28 | 肃北镁弘科技有限公司 | A kind of preparation method of the big crystallization fused magnesite of low silicon high calcium |
| CN109851240A (en) * | 2018-05-09 | 2019-06-07 | 辽宁新发展耐火材料集团有限公司 | A kind of preparation method of the big crystallization fused magnesite of low silicon high calcium |
| CN110128154A (en) * | 2019-05-29 | 2019-08-16 | 海城利尔麦格西塔材料有限公司 | A kind of low carbon magnesia carbon brick and preparation method adding titanium carbonitride |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111807724B (en) | 2022-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101612653A (en) | Mold powder for continuous casting of high aluminium-titanium-rare earth steel | |
| CN101906546A (en) | Method for preparing vanadium-aluminum alloy | |
| CN109777919A (en) | Reduce the remelting method and remelting slag system of ESR ingot oxygen content | |
| CN110511047B (en) | Method for preparing regenerated magnesia carbon brick by hydration impregnation treatment process | |
| CN102220608B (en) | Preparation method of silicon-manganese alloy | |
| CN1481954A (en) | Fluorine-free environment-friendly type continuous casting protecting slag for the blast furnace slag containing titanium and the manufacturing process of the same | |
| CN109148852A (en) | A kind of preparation method and its material of the graphite cathode material improving covering property | |
| CN111807724B (en) | Additive for producing fused magnesia and use method thereof | |
| CN105063280A (en) | Slagging medium and preparation method thereof | |
| CN109332941B (en) | Corrosion-resistant high-conductivity exothermic welding flux | |
| CN108455973B (en) | Method for manufacturing straight cylinder furnace lining for smelting ferrovanadium | |
| CN1584089A (en) | Mangan-alloy production | |
| CN105950912B (en) | A kind of preparation method of medical Zr 2.5Nb alloy cast ingots | |
| CN1301934C (en) | Briquette for iron-smelting blast furnace lining and its preparation method | |
| CN104988309B (en) | Iron ore pellets boron magnesium compound binding agent and purposes and the processing method of acidic pellet ore | |
| CN109879612B (en) | Preparation method of high-purity transparent crystal fused magnesia | |
| KR20100032966A (en) | Method of forming a ferronikel | |
| CN112458304A (en) | Electroslag remelting slag system for smelting ultra-low-carbon low-aluminum high-titanium maraging steel | |
| KR101630995B1 (en) | Method of forming a ferronikel | |
| CN1024128C (en) | Electric remelting method for improving purity of magnesia | |
| CN101318809B (en) | Low-temperature 90% AL2O3 porcelain powder | |
| CN104973867B (en) | High-purity magnesium oxide dry-type ramming mass used in metal magnesium electrolytic cell | |
| CN101475323A (en) | Preparation method of high purity magnesia | |
| CN102758066A (en) | Method for alloying manganese ore in LF (ladle furnace) | |
| CN101391885B (en) | Low-temperature 95% Al2O3 porcelain powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |