Study on Properties of Re-Bonded Magnesium Zirconium Refractory Materials and Materials Application

Nineteen eighties, the sintering zone of cement rotary kiln and transition belt use main magnesia chrome brick because of its excellent performance, but the Cr6+ is carcinogenicity, which causes great harm to the air, water pollution, animal or human. Therefore, new basic refractory material of free of chrome began to be developed. This test, the raw material is made up of fused magnesite particles (particle size 0 to 3 mm), fine fused magnesite powder with the size less than 200 meshes and fine fused magnesia-zirconia’s powder with the size less than 320 meshes, polyvinyl alcohol and calcium lignosulfonate liquor being used as the combiner. This paper discusses the effect of sinter temperature on sinter character of products.

The Development of Free of Chrome of Basic Refractory Materials for Cement Kiln and its Applications in Engineering

This paper introduces the domestic and international evolution of refractory for cement rotary kiln and the situation of development for basic refractory. Also it introduces the usage and advantages and disadvantages of the high alumina brick, magnesia chrome brick, dolomite brick, magnesia spinel brick, magnesia zirconia brick. Refractory for cement kiln develops towards the direction of free of chromium, and it points out the development prospect of re-bonded magnesium zirconium refractory material .