causticized lignite苛性化褐煤
alkaline lignite煤碱剂
uraniferous lignite含铀褐煤
lignite dryer褐煤烘干机
immature lignite未成熟褐煤
lignite pitch褐煤沥青
Erdos lignite鄂尔多斯褐煤
lignite slag褐煤炉渣
inferior lignite劣质褐煤
And this grinding condition is also feasible to other lignite chars.
该球磨条件对其它褐煤半焦同样适用。
参考来源 - 褐煤半焦制备水焦浆的研究Light grey – light red grey finest – fine sandstone and a little coaly sandstone and interbedded mudstone make up of this sequence. There is also pitch coal and lignite in this sequence.
层序V-2，为中新世八重山群上部淡灰—淡红灰色极细—细粒砂岩和少量灰质砂岩为主的，与泥岩组成的互层，并夹有沥青质煤和褐煤。
参考来源 - 冲绳海槽南部地震层序与构造复原N（名词） a brown carbonaceous sedimentary rock with woody texture that consists of accumulated layers of partially decomposed vegetation: used as a fuel. Fixed carbon content: 46–60 per cent; calorific value: 1.28×107 to 1.93×107 J/kg (5500 to 8300 Btu/lb) 褐煤 (Also called brown coal)