50年代以来,随着科学技术的发展,非金属矿产在国民经济建设中的地位越来越高,发达国家在科研、生产、利用和产销等方面的发展已超过了金属矿产。目前世界上已发现可供利用的非金属矿产,矿物和岩石多达200种左右,其应用范围极为广泛,从日常生活用品到现代尖端电子和航天工业,处处大显神威。就近些年来刚被开发利用的膨润土为例,由于其应用广泛,而被誉为万能矿物,美国将它列为战略物质。当前,膨润土已被应用在铸造、建筑、冶金、陶瓷、医学、化妆、食品、钻探、纺织、化工、炼油、造纸、供水系统、农业、畜牧业、染料、肥料配制、核工业及环保等行业之中。据报导,世界非金属矿产1985年总产值为850亿美元,超过金属矿产总产值的50—60％,预计到2000年将达2000亿美元。在国际贸 Since the 1950s, with the development of science and technology, the status of non-metallic minerals in the construction of national economy has become more and more high. The developed countries have surpassed the metal minerals in the fields of scientific research, production, utilization, production and marketing. There are currently about 200 non-metallic minerals, minerals and rocks available for discovery in the world. Their applications are extremely broad. They range from daily necessities to modern state-of-the-art electronics and aerospace industries. In recent years, Bentonite has just been developed and utilized as an example. Due to its wide range of applications, the United States has named it a universal mineral and the United States has classified it as a strategic substance. At present, bentonite has been used in such industries as foundry, construction, metallurgy, ceramics, medicine, cosmetics, food, drilling, textile, chemical, oil refining, paper making, water supply system, agriculture, animal husbandry, dye, fertilizer preparation, nuclear industry and environmental protection Among them. According to the report, the world’s non-metallic mineral output in 1985 was 85 billion U.S. dollars, more than 50-60% of the total output value of the metal minerals. It is estimated that by the year 2000 it will reach 200 billion U.S. dollars. In international trade