凹凸棒石粘土是一种稀少的、用途广泛的非金属矿,仅在我国等十几个国家发现有这种矿床,而具有工业开采价值并已商品化生产的只有美国、乌克兰、印度、澳大利亚、中国等少数几个国家。美国的年产量约30万吨。 凹凸棒石粘土含凹凸棒土70％～80％,蒙脱土、海泡石等粘土10％～15％,石英石4％～8％,方解石或白云石1％～5％,经热活化、酸或碱活化和有机活化等处理后得到含量达85％～90％的凹凸棒土商品,分成胶质级和吸附级两大类。美国按最终用途生产百 Attapulgite clay is a rare and widely used non-metallic mineral, found only in more than a dozen countries such as China, but only the United States, Ukraine, India, Australia, which have industrial exploitation value and have been commercialized , China and a few other countries. The U.S. annual output is about 300,000 tons. Attapulgite clay contains 70-80% of attapulgite, 10-15% of clay such as montmorillonite, sepiolite, 4-8% of quartz, 1% -5% of calcite or dolomite, and is activated by heat , Acid or alkali activation and organic activation after treatment content of 85% to 90% of attapulgite goods, divided into two levels of glial grade and adsorption grade. The United States produces 100 by end use