henan ruishi special refractory co., ltd. is established according to the modern management in 1993. as one of the main manufacturers and exporters for abrasive, refractory materials and metallurgy industry in china. we have six plants (one fused plant,three processing factories, one special refractory material plant,one metallurgy material plant,one acid washing and water washing plant, and sales department ).we can produce 80,000 tons annually. our products include brown fused alumina95%, brown fused alumina98%,white fused alumina, black fused alumina, compact fused alumina, semi-friable fused alumina, micro crystalline fused alumina, calcium aluminate etc. we have passed iso9001-2000 quality management system certificate. semi-friable fused alumina is a new type of abrasive developed by our plant to meet the demands of the international market. with high quality bauxite as raw material, it is produced in the based of smelting the vice-white fused alumina, adjusting smelting process and ratio of raw materials, melting at the high temperature of above 2100¡æ in the electric furnace, and using a special broken treatment technique. since its hardness and toughness is between white fused alumina and brown fused alumina, it is called semi-friable fused alumina. it is characterized by high temperature resistance, corrosion and erosion resistance, low apparent porosity and stable thermal stability. its grain is characterized by strong self-sharpening, sharp grinding edges and not easy to burn workpiece. after the grain of semi-friable fused alumina is processed, the relative ability of grinding resistance of semi-friable fused alumina increase, which is particularly applicable for grinding thermosensitive steel and alloy, low hardness, lower non-ferrous metal materials such as aluminum, copper, zinc, plumbum and non-metallic materials such as wood, plastic, and it is widely used for the production of bonded and coated abrasives. specification: grit no. chemical composition (%) al203 fe203 si02 ti02 f4-f100 97.5 0.15 0.5 1.5 f120-f240 97 0.2 0.8 1.5 p4-f100 97.5 0.15 0.5 1.5 p120-p240 97 0.2 0.8 1.5 if you have any requirement, please don't hesitate to inform us. duzude521@rs-abrasive.com. hope we can establish stalbe long terms business relationship with each other. sales manager: du zu de tel:86-379-65285886-805 mobile phone:13383884596 fax:86-379-65285889 http://www.ycrs.com.cn