苛性白云石与菱苦土复合的胶凝材料

Research on the composite magnesia cement of the caustic dolomite and the calcined magnesite

在小型试验的基础上 ,对用白云石为原料煅烧加工成苛性白云石镁质胶凝材料进行了半工业试验 .试验证明在苛性白云石镁质胶凝材料中加入一定数量的菱苦土所构成的复合型镁质胶凝材料 ,其标准稠度的净浆抗折、抗压强度等可达到和超过原国家物资局对镁质胶凝材料的有关标准要求 .用这种复合型镁质胶凝材料生产某些建筑型材等是可行的 .

The semi industrial experiments in which the tons of the dolomites was first calcined and crushed and finally ground into the magnesia cement of the caustic dolomite were carried out on the basis of the small scale experiments. Other experiments show that the compressive strength and breaking strength of the composite magnesia cements, which are composed of the caustic dolomite and the calcined magnesite according to certain ratio between the caustic dolomite and the calcined magnesite, can be up to or over the standard of the Ministry of Goods and Materials of China about the magnesia cement. It is possible to exploit the composite magnesia cement to produce some products of the building materials and so on. The experiments have provided the practical evidences for the exploitation and use of the abundant resources of the dolomites. [