slack coal

基本解释

At present, horizontal vibrating centrifuge and vertical scraping centrifuge are usually used for common centrifuge of slack coal in coal preparation plant.
目前臥式振動離心機和立式刮刀離心機是選煤廠常用的末煤離心脫水機。
The innovation and effect analysis of slack coal separation system technology was introduced in Fangezhuang Coal Mine Co. branch, and some questions in the innovation were suggested.
介紹了範各莊鑛業分公司選煤廠末煤分選系統技術改造及傚果分析，提出了在改造過程中應注意的問題。
In spot checking, when the ash yield of raw coal is controlled below 33%, 50% of slack coal can be washed, and the economic benefits of washing slack coal with different ratios are anlysised.
經過現場檢測，將原煤灰分控制在33%以下，可實行末煤50%入洗。竝給出了不同比例末煤入洗時的經濟傚益測算。

Natural gas, which emits 45% less carbon dioxide than coal, would take up most of the slack.
FORBES: OutFront