Oil Shale, Vol.11, No.4, 359-362, 1994
TECHNOLOGICAL CHARACTERISTICS OF THE FAR-EAST LIPTOBIOLITH
Liptobioliths belong to the rather rare caustobioliths and represent a valuable raw material for chemical industry [1]. The technological characteristics of Lipovetsk liptobiolith from the Russian Far East have been investigated. The samples studied are characterized by high content of organic matter -60-70 %, high calorific value (bomb calorimeter) - 19-23 MJ/kg, and a very low sulphur content - 0.18-0.29 %. Oil yield in the Fischer retort was 8-17 %, calculated on organic matter - 14-26 %. In the mineral part silicon compounds dominate and carbonates are practically absent (Table 1). At semicoking liptobioliths low-sulphur (0.25 % of S) and rather rich in phenols (11-21 %) oil is produced (Table 2). Semicoke of high calorific value (17-18 MJ/kg) has a low content of sulphur(0.18-0.25 %) and so may be considered to belong to high-quality solid fuels. Considering these facts enables to work out a technology of retorting liptobioliths without wastes. The use of vertical retorts, in operation for retorting kukersite without further gasification of semicoke, can be of practical interest for retorting liptobiolith [2].