The results showed that fluorine-bearing acids are good deashiag agent of coal and graphite and can effectively leach out almost all mineral components in coal and graphite.
结果表明，含氟酸是良好的煤和石墨的脱灰剂，能有效地脱除煤和石墨中的各种矿物质组分。
2
The water seal technology is used to solve the problem of the collection rate of the mother liquid in situ leach mining of the rare earth mineral.