从生油岩或油页岩中提取干酪根,目前国内外所采用的分离方法均基本相同,只是具体操作程序上有些差异。分离产物经灼烧鉴定,灰份大部分在15—25％之间,还有相当数量的难溶无机矿物可能以不同的形式存在于干酪根中。这些残存的难溶无机矿物大致可分为四类:(1)黄铁矿(FeS_2);(2)难溶的硫酸盐,如硫酸钡(BaSO_4)、硫酸锶(SrSO_4);(3)难溶的金属氧化物, The kerogen is extracted from the source rock or oil shale. At present, the separation methods used in both home and abroad are basically the same, but there are some differences in the specific operating procedures. The isolated product is identified by ignition and most of the ash is between 15 and 25%. There is also a significant amount of poorly soluble inorganic minerals that may exist in kerogen in different forms. These remaining insoluble inorganic minerals can be broadly divided into four categories: (1) pyrite (FeS 2); (2) poorly soluble sulfates such as barium sulfate (BaSO 4) and strontium sulfate Dissolved metal oxide,