In order to satisfy and long-term running for the circulating fluidized bed boiler with full loads, it must resolve the problem from the boiler lining. Therefore, our factory have developed refractory with the silica composition and insulating materials, got successful running at the various capacity of CFB boilers with 10t/h,35t/h,75t/h, 130t/h,220t/h,480t/h, and passed appraise in provincial and ministry classes, filled the gaps in our industry。