单质形态的硫出现在石盐、石膏等沉积矿床和火山形 成的沉积中. 硫的世界年产量（约6×10t)的85% ~90%用于制H2S04,其他用途包括制造 SO2,SO3,CS2,PS1o,橡胶硫化剂、硫 染料以及含硫混凝土、枪药、爆竹等多种 商品 The Frasch method for recovering Melted sulfur obtained from under A sulfur deposit sulfur from underground d eposits ground a eposits by the Frasch process 单质形态的硫出现在石盐、石膏等沉积矿床和火山形 成的沉积中. 硫的世界年产量(约6×107t )的 85% ～90% 用于制H2SO4，其他用途包括制造 SO2，SO3，CS2，P4S10，橡胶硫化剂、硫 染料以及含硫混凝土、枪药、爆竹等多种 商品. A sulfur deposit The Frasch method for recovering sulfur from underground d eposits Melted sulfur obtained from under ground a eposits by the Frasch process