目前,非金属矿物广泛用于建材、冶金、轻工、化工、石油、电子、机械、宇航、农业等部门。随着世界科学技术和经济的发展,非金属矿物的消费量日益增大,其年增长率预测到2000年平均为3.2%而同期金属矿的增长率将只有2.5%。大量开发和广泛应用非金属矿物有很高的 At present, non-metallic minerals are widely used in building materials, metallurgy, light industry, chemical industry, petroleum, electronics, machinery, aerospace, and agriculture. With the development of science, technology and economy in the world, the consumption of non-metallic minerals is increasing day by day. Its annual growth rate is predicted to be 3.2% in 2000 and the growth rate of metal ore will be only 2.5% in the same period. Extensive development and widespread use of non-metallic minerals have high