近年来,国内外碎云母的开发利用发展很快,市场需求量也不断增加。河北省灵寿县云母采矿加工厂,从1981年起至1985年底经中国五金矿产进出口总公司河北省分公司出口到英国、新加坡、联邦德国、日本、苏联等国的碎云母共计4,500吨,1985年创汇总额21万美元。1986年日本、英国、澳大利亚等外商提出近2万吨的订货要求,但由于该厂选矿手段落后, In recent years, the development and utilization of broken mica at home and abroad has developed rapidly, and the market demand is also on the increase. Lingshou County, Hebei Province mica mining and processing plants, from 1981 until the end of 1985 by China Metallurgical Import and Export Corporation Hebei Branch exports to Britain, Singapore, the Federal Republic of Germany, Japan, the Soviet Union and other countries a total of 4,500 tons of broken mica, In 1985 total foreign exchange 210,000 US dollars. In 1986, Japan, the United Kingdom, Australia and other foreign investors put forward orders of nearly 20,000 tons. However, due to the backward mining methods of the plant,