yixing xinwei leeshing refractory materials co.,Ltd
| Payment Terms | L/C, T/T |
| Supply Ability | 10.000MT Per month |
| Delivery Time | To be negotiated |
| Packaging Details | packed on wooden pallets, with water-proof cover, and tightened with plastic/steel bandages |
| quality level | JIS |
| Application | kinds of industry furnace |
| Color | Black and green |
| Bulk density g/cm3 ≤ | 2.0-2.5g/cm3 |
| SiC Content (%) | 70-90 |
| Advantage | long life |
| size | 230mm*114mm*65/75mm |
| Product name | ASC bricks |
| Brand Name | CRE |
| Model Number | XCL |
| Certification | ISO9001, ISO14001,ISO50001,ISO45001 |
| Place of Origin | JIANGSU,CHINA |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 10.000MT Per month |
| Delivery Time | To be negotiated | Packaging Details | packed on wooden pallets, with water-proof cover, and tightened with plastic/steel bandages |
| quality level | JIS | Application | kinds of industry furnace |
| Color | Black and green | Bulk density g/cm3 ≤ | 2.0-2.5g/cm3 |
| SiC Content (%) | 70-90 | Advantage | long life |
| size | 230mm*114mm*65/75mm | Product name | ASC bricks |
| Brand Name | CRE | Model Number | XCL |
| Certification | ISO9001, ISO14001,ISO50001,ISO45001 | Place of Origin | JIANGSU,CHINA |
| High Light | Clay Bonded ASC Bricks ，High Temperature Strength Silicon Carbide Brick ，SiC ASC Bricks | ||
Best Quality silicon carbide brick SiC high temperature strength clay bonded ASC bricks
Aluminum silicon carbide bricks, brief introduction of torpedo tanker, effect and requirements of molten iron pretreatment on refractory materials
Taking the pretreatment of molten iron for torpedo mixed iron tankers as an example, during the pretreatment of molten iron, the pretreatment agent is sprayed into the molten iron through a spray gun with a carrier gas (nitrogen or air). In order to improve the pretreatment efficiency, the stirring gas is sprayed into the molten iron through the nozzle, or the molten iron is stirred with a stirrer, so that the pretreatment agent and the molten iron are fully mixed, and the reaction process is accelerated and the reaction is fully completed.
In the desilication treatment, iron oxide series (FeO) pretreatment agent is used, generally rolled iron scale or iron ore is used as the oxygen source in the pretreatment process, and lime (CaO) is used to adjust the basicity of the slag. During dephosphorization treatment, lime-based (CaO-CaF2-FeO) or soda ash-based (Na2CO3) pretreatment agents are generally used. In the desulfurization treatment, lime-based (CaO-CaF2 and CaC2) are used. Various pretreatment agents have a strong erosive effect on refractory materials, especially among soda ash pretreatment agents, Na2O has good dephosphorization and desulfurization effects, but its melting point is very low (825 ℃), The erosion effect of refractory materials is very intense. Na2O is also a strong oxidizing agent that can oxidize graphite and silicon carbide.
When lime-based pretreatment agent is used, lime (CaO), fluorite (CaF2) and iron oxide (Fe2O3) are mixed together. Iron oxide and fluorite have a strong erosive effect on refractory materials, but their erosive effect is stronger than Na2O is light. In addition, due to the addition of lime during the treatment process, the basicity of the slag changes greatly, from acidic slag to alkaline slag, and the refractory material is eroded by both acidic and alkaline slag.
In the process of molten iron pretreatment, the erosion damage of refractory materials is mainly as follows:
Strong scour and wear effect of high temperature molten iron and slag.
Chemical attack of various pretreatment agents.
Penetration and erosion of slag.
Temperature sudden change caused by intermittent operation.
Therefore, the requirements for refractories for molten iron pretreatment are:
High temperature strength, wear resistance.
Resistant to various pretreatment agents.
The corrosion resistance of slag is good.
Good thermal shock resistance, no cracking and peeling off.
It is convenient for on-site application and construction, and has less environmental pollution.
| Item | CRE-65/50 | CRE-65/70 | CRE-51 | At the same time, it provides supporting aluminum-silicon castables and nano-insulation boards. and other auxiliary materials | |
| Refractoriness (℃) | ≥1750 | ≥1750 | ≥1750 | ||
| Chemical composition(%) | F.C | ≥8 | ≥5 | ≥14 | |
| AL2O3 | ≥53 | ≥62 | ≥51 | ||
| SiC | ≥4 | ≥4 | ≥8 | ||
| SiO2 | ≤27 | ≤23 | ≤18 | ||
| Bulk density(g/cm3) | ≥2.7 | ≥2.85 | ≥2.7 | ||
| Apparent porosity(%) | ≤10 | ≤10 | ≤7.5 | ||
| Cold strength (Mpa) | ≥40 | ≥45 | ≥40 | ||
Company brief
Production Capacity
The company can produce the refractory material products of 178 product brands under eight major series, the annual production capacity is up to 100,000 tons, among them, 60,000 tons of fired products medium-to-high gradly, 20,000 tons of unfired products, 20,000 tons of unshaped refractory materials. The company enjoys the power to engage in import and export trade on its own account, the products find a good sale in Japan, Korea S., Russia, Australia, U.S.A. etc. . Company refractory exported account take advanced position in domestic!
Process Equipment
At present company's equipment level had been equal to that of international large refractory company and detailed showed as followings: On shaping equipment, more than 60 high pressure press(From 260T~1250T),one 24000T Isostatic press; on fire equipment, four ultra-high temperature tunnel furnace and many down-draft furnace; on mold-making equipment, 20 various kinds of lathe, miller, planer and grinder and several heating furnace.
Product Application
The company researches and develops by itself, the developed products are applied in a great deal of fields, among them the First subsidiary factory specializes in manufacturing refractory materials for building industry (glass, cement), the Second subsidiary factory specializes in manufacturing refractory materials for metallurgy(nonferrous and ferrous). Meanwhile, the third subsidiary factory(Wuxi Xinwei Pan-Asia High-temperature Ceramics Co., Ltd) got the approval of domestic and international numerous users as the development and application on the material products in the petrochemical industry, power industry.
Research and Development
Our company has first-class products scientific research monitoring centers, the company is supported by domestic scientific research universities and colleges, have obtained considerable development in a great deal of respects of developing and using.
Company Advantage:
Founded in the 1984, listed on the Hong Kong Stock Exchange on October 15, 1999 (name: China Rare Earth, code: 0769)
The company is headquartered in Yixing, with branches in Shanghai and Hong Kong
Professional manufacturer of Rare Earth and refractories
The top 3 supplier of refractories in China
covers an area of 360,000 square meters and a building area of 240,000 square meters.More than 2,000 employees, Scientific and technological personnel account for 30% of the total number of employees.
Obtained more than 11 patent certificates
Established a technical cooperation relationship with Japan Krosaki Harima Corp.
Long-term supply to Japan Nippon Steel, Japan NKK, Kimizu, Aoida and Nisingkou steel Co
Company Details
Business Type:
Manufacturer
Year Established:
1984
Total Annual:
100000000-120000000
Employee Number:
1500~2000
Ecer Certification：
Verified Supplier
Yixing Xinwei Leeshing Refractory Material Co., Ltd Refractory Industry is one of pillar industries in China Rare-Earth Holding Group. Beneath its 100% holding, there are two subsidiaries: Yixing Xinwei Leeshing Refractory Material Co., Ltd and Wuxi Xinwei Pan-Asia High-Temperature Cera... Yixing Xinwei Leeshing Refractory Material Co., Ltd Refractory Industry is one of pillar industries in China Rare-Earth Holding Group. Beneath its 100% holding, there are two subsidiaries: Yixing Xinwei Leeshing Refractory Material Co., Ltd and Wuxi Xinwei Pan-Asia High-Temperature Cera...
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