fused magnesium aluminum spinel is manufactured from high purity raw materials in large electric arc furnace. it is a good kind of refractory materials, which has excellent refractory properties and superior refractory properties and superior refractory aggregate. it can be used in aluminous refractory bodies, pre-fired shape and monolithics to improve their resistance to slag attack. 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. am-60 chemical composition(%):al2o3:58-62% mgo: 30-32% sio2: 3.5%max am-70 chemical composition(%):al2o3: 71-77% mgo: 22-27% sio2: 3.0%max am-80 chemical composition(%):al2o3: 81-86% mgo: 13-17% sio2: 3.0%max am-90 chemical composition(%) :al2o3: 88-92% mgo: 7-11% sio2: 2.5%max if you have any requirement, please don't hesitate to inform us. melodyyangmei(at)hotmail.com. hope we can establish stable long terms business relationship with each other. sales manager: melody yang tel:86-379-65285887-804 mobile phone:13849906514 fax:86-379-65285889 http://www.ycrs.com.cn