引言凹凸棒石又称为坡缕石,是一种稀少的矿土。它的棒粒细微、均匀、无嗅无味、无毒、比表面大、吸附性能好、不导电、不被电解质絮凝,在水中不溶不胀,具有高度热稳定性和高度化学惰性等特点,用途广泛。可作填料、涂料、吸附剂、催化剂、增稠剂等,在地质勘探中可用来制做优质钻井泥浆。据文献报道,美产凹凸棒土,分为两大类型,100多种品级,并开发出了近千种用途。 Palygorskite, also known as palygorskite, is a rare mineral. Its fine grain, uniform, odorless and odorless, non-toxic, large surface, good adsorption performance, non-conductive, not electrolyte flocculation, insoluble in water, with high thermal stability and high chemical inertness, etc. widely. For fillers, coatings, adsorbents, catalysts, thickeners, etc., can be used in geological exploration to make high-quality drilling mud. According to the literature, the United States produced attapulgite clay, divided into two types, more than 100 kinds of grade, and developed nearly a thousand kinds of uses.