CN111423242B - Anti-stripping high-thermal-shock-resistance castable - Google Patents
Anti-stripping high-thermal-shock-resistance castable Download PDFInfo
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Abstract
The invention relates to an anti-stripping high thermal shock resistant castable which is prepared from the following raw materials in parts by weight: 40-60 parts of waste zircon brick particles and fine powder of a glass kiln, 15-30 parts of waste silicon carbide shed plate particles, 1-10 parts of fused quartz particles, 10-20 parts of mullite fine powder, 3-15 parts of aluminate cement, 3-5 parts of silicon oxide micro powder, 3-5 parts of alumina micro powder, 1-3 parts of metal silicon powder and 1-2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate; the zircon, the silicon carbide and the fused quartz are all synthetic materials with small thermal expansion coefficient and good thermal shock stability, the product material of the invention has high strength, good wear resistance and excellent thermal shock resistance, and the zircon brick and the waste silicon carbide shed plate are all waste materials, thereby not only recycling the waste materials, but also greatly reducing the product cost and being beneficial to recycling resources.
Description
Technical Field
The invention belongs to refractory materials, and particularly belongs to a low-cost anti-stripping high-thermal shock resistant castable.
Background
According to the production characteristics of general high-temperature industrial equipment, temperature fluctuation exists in the operation process, and the thermal shock damage service life of the castable material caused by temperature change is reduced due to the operation of stopping and opening the kiln in a production plan. In the technology, synthetic raw materials with good thermal shock stability, such as mullite, spinel and the like, are generally adopted as main raw materials to improve the thermal shock stability of the material. At present, a technical method for improving the thermal shock resistance of the material by adding zirconia, steel fibers and other technical means is also adopted, the zirconia is expensive, and the use environment of the steel fibers is limited. And part of the waste refractory materials removed from the high-temperature kiln are not easy to degrade as solid wastes, so that the environmental pollution is caused.
Therefore, the production cost is low, and the anti-stripping high thermal shock resistant castable made of waste materials is utilized, so that the castable has a wide market prospect and good environmental benefits.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the castable which is low in cost, simultaneously utilizes the anti-stripping high thermal shock resistance of waste materials, and is used for overcoming the defects in the prior art.
The technical scheme of the invention is realized as follows: an anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40-60 parts of waste zircon brick particles and fine powder of a glass kiln, 15-30 parts of waste silicon carbide shed plate particles, 1-10 parts of fused quartz particles, 10-20 parts of mullite fine powder, 3-15 parts of aluminate cement, 3-5 parts of silicon oxide micro powder, 3-5 parts of alumina micro powder, 1-3 parts of metal silicon powder and 1-2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate.
The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes.
The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
The invention has the following positive effects: the method mainly comprises the steps of crushing and processing waste zircon bricks of a recycled glass kiln into particles below 6 mm, processing recycled waste silicon carbide slabs into particles with the particle size not larger than 2 mm, matching fused quartz particles with the particle size not larger than 5 mm as aggregate, processing the waste zircon bricks of the recycled glass kiln into 200-mesh fine powder, 300-mesh fine powder and mullite fine powder as powder, taking aluminate cement, silica micro powder and alumina micro powder as bonding agents, taking metal silicon powder as an antioxidant, and taking one or two of sodium tripolyphosphate and sodium hexametaphosphate as dispersing agents.
The zircon, the silicon carbide and the fused quartz adopted by the invention are all synthetic materials with small thermal expansion coefficient and good thermal shock stability, the product material has high strength, good wear resistance and excellent thermal shock resistance, and the zircon brick and the waste silicon carbide shed plate are all waste materials, so that the waste materials are recycled, the product cost is greatly reduced, and the resource recycling is facilitated.
Not only can greatly reduce the material cost, but also is beneficial to the cyclic utilization of resources, and can obviously improve the thermal shock resistance of the material. Product bulk density (g/cm) 3 ): not less than 2.6; cold flexural strength (MPa): the temperature multiplied by 24h at 110 ℃ is more than or equal to 10, and the temperature multiplied by 3h at 1300 ℃ is more than or equal to 12; cold compressive strength (MPa): the temperature multiplied by 24h at 110 ℃ is more than or equal to 80, and the temperature multiplied by 3h at 1300 ℃ is more than or equal to 100; line change rate (%): the multiplying power of 1300 ℃ is less than or equal to +/-0.5 h, and the thermal shock stability (water cooling at 1100 ℃) is more than or equal to 50 times.
Detailed Description
An anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40-60 parts of waste zircon brick particles and fine powder of a glass kiln, 15-30 parts of waste silicon carbide shed plate particles, 1-10 parts of fused quartz particles, 10-20 parts of mullite fine powder, 3-15 parts of aluminate cement, 3-5 parts of silicon oxide micro powder, 3-5 parts of alumina micro powder, 1-3 parts of metal silicon powder and 1-2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
The product not only can greatly reduce the material cost, but also is beneficial to the cyclic utilization of resources, and can obviously improve the thermal shock resistance of the material. Bulk Density of product (g/cm) 3 ): not less than 2.6; cold flexural strength (MPa): the temperature multiplied by 24h at 110 ℃ is more than or equal to 10, and the temperature multiplied by 3h at 1300 ℃ is more than or equal to 12; cold compressive strength (MPa): the temperature multiplied by 24h at 110 ℃ is more than or equal to 80, and the temperature multiplied by 3h at 1300 ℃ is more than or equal to 100; line change rate (%): the multiplying power of 1300 ℃ is less than or equal to +/-0.5 h, and the thermal shock stability (water cooling at 1100 ℃) is more than or equal to 50 times.
The first embodiment is as follows: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 10 parts of mullite fine powder, 3 parts of aluminate cement, 3 parts of silicon oxide micro powder, 3 parts of alumina micro powder, 1 part of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example two: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 20 parts of mullite fine powder, 15 parts of aluminate cement, 5 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 3 parts of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example three: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: the glass kiln waste zircon brick comprises 50 parts of glass kiln waste zircon brick particles and fine powder, 25 parts of waste silicon carbide shed plate particles, 7 parts of fused quartz particles, 15 parts of mullite fine powder, 10 parts of aluminate cement, 4 parts of silicon oxide micro powder, 4 parts of alumina micro powder, 2 parts of metal silicon powder and 1.5 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example four: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 20 parts of mullite fine powder, 15 parts of aluminate cement, 5 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 3 parts of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example five: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 20 parts of mullite fine powder, 15 parts of aluminate cement, 5 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 3 parts of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example six: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 20 parts of mullite fine powder, 15 parts of aluminate cement, 5 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 3 parts of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example seven: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 10 parts of mullite fine powder, 15 parts of aluminate cement, 5 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 3 parts of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example eight: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 20 parts of mullite fine powder, 3 parts of aluminate cement, 5 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 3 parts of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example nine: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 20 parts of mullite fine powder, 15 parts of aluminate cement, 3 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 3 parts of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example ten: an anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 20 parts of mullite fine powder, 15 parts of aluminate cement, 5 parts of silicon oxide micro powder, 3 parts of alumina micro powder, 3 parts of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example eleven: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 20 parts of mullite fine powder, 15 parts of aluminate cement, 5 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 1 part of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example twelve: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 20 parts of mullite fine powder, 15 parts of aluminate cement, 5 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 3 parts of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example thirteen: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 10 parts of mullite fine powder, 3 parts of aluminate cement, 3 parts of silicon oxide micro powder, 3 parts of alumina micro powder, 1 part of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example fourteen: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 10 parts of mullite fine powder, 3 parts of aluminate cement, 3 parts of silicon oxide micro powder, 3 parts of alumina micro powder, 1 part of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example fifteen: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 10 parts of fused quartz particles, 10 parts of mullite fine powder, 3 parts of aluminate cement, 3 parts of silicon oxide micro powder, 3 parts of alumina micro powder, 1 part of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example sixteen: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 20 parts of mullite fine powder, 3 parts of aluminate cement, 3 parts of silicon oxide micro powder, 3 parts of alumina micro powder, 1 part of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example seventeen: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 10 parts of mullite fine powder, 15 parts of aluminate cement, 3 parts of silicon oxide micro powder, 3 parts of alumina micro powder, 1 part of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example eighteen: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed board particles, 1 part of fused quartz particles, 10 parts of mullite fine powder, 3 parts of aluminate cement, 5 parts of silica micropowder, 3 parts of alumina micropowder, 1 part of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example nineteenth: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 10 parts of mullite fine powder, 3 parts of aluminate cement, 3 parts of silicon oxide micro powder, 5 parts of alumina micro powder, 1 part of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example twenty: an anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 10 parts of mullite fine powder, 3 parts of aluminate cement, 3 parts of silicon oxide micro powder, 3 parts of alumina micro powder, 3 parts of metal silicon powder and 1 part of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
Example twenty one: the anti-stripping high thermal shock resistant castable is prepared from the following raw materials in parts by weight: 40 parts of waste zircon brick particles and fine powder of a glass kiln, 15 parts of waste silicon carbide shed plate particles, 1 part of fused quartz particles, 10 parts of mullite fine powder, 3 parts of aluminate cement, 3 parts of silica micropowder, 3 parts of alumina micropowder, 1 part of metal silicon powder and 2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate. The particle size of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes. The particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
The zircon, the silicon carbide and the fused quartz adopted by the invention are all synthetic materials with small thermal expansion coefficient and good thermal shock stability, the product material has high strength, good wear resistance and excellent thermal shock resistance, and the zircon brick and the waste silicon carbide shed plate are all waste materials, so that the waste materials are recycled, the product cost is greatly reduced, and the resource recycling is facilitated.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (1)
1. The anti-stripping high-thermal shock-resistant castable is characterized by being prepared from the following raw materials in parts by weight: 60 parts of waste zircon brick particles and fine powder of a glass kiln, 30 parts of waste silicon carbide shed plate particles, 1-10 parts of fused quartz particles, 10-20 parts of mullite fine powder, 3-15 parts of aluminate cement, 3-5 parts of silica micropowder, 3-5 parts of alumina micropowder, 1-3 parts of metal silicon powder and 1-2 parts of one or two of sodium tripolyphosphate or sodium hexametaphosphate; the granularity of the waste zircon brick particles of the glass kiln is not more than 6 mm, and the fine powder is 200 meshes or 300 meshes; the particle size of the waste silicon carbide slab is not more than 2 mm, and the particle size of the fused quartz is not more than 5 mm.
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| CN111718203B (en) * | 2020-07-28 | 2022-08-19 | 中国一冶集团有限公司 | Refractory castable for converter sublance and preparation method thereof |
| CN111848192A (en) * | 2020-07-31 | 2020-10-30 | 北京金隅通达耐火技术有限公司 | Refractory material prepared from waste high-alumina ceramic balls and waste shed plate |
| CN111807851A (en) * | 2020-07-31 | 2020-10-23 | 北京金隅通达耐火技术有限公司 | Composite castable prepared from waste ceramic roller and waste shed plate |
| CN112851291A (en) * | 2021-03-05 | 2021-05-28 | 中冶武汉冶金建筑研究院有限公司 | Silicon carbide slurry utilizing waste silicon carbide shed plates and preparation method thereof |
| CN113511909A (en) * | 2021-08-25 | 2021-10-19 | 郑州瑞泰耐火科技有限公司 | Anti-skinning castable prepared from waste silicon mullite bricks and preparation process thereof |
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| JPH09278545A (en) * | 1996-04-17 | 1997-10-28 | Asahi Glass Co Ltd | Composition for cast refractory material |
| CN101870562B (en) * | 2010-06-30 | 2012-05-02 | 泰州枫叶冶金设备有限公司 | Precision casting waste sand reusing method |
| CN102674859B (en) * | 2012-05-24 | 2014-01-08 | 洛阳理工学院 | Refractory castable for kilneye and kiln head cover of rotary kiln |
| CN103214253A (en) * | 2013-04-27 | 2013-07-24 | 阳泉金隅通达高温材料有限公司 | High-strength and anti-stripping type homogenous composite castable and preparation method |
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