Ib leeg-tsav siab siab sib tsoo yob yog tshwj xeeb tsim los ua ntej sib tsoo cov cement clinkers, cov ntxhia pob zeb, cov hlau clinkers thiab lwm yam rau hauv cov granules me me, txhawm rau txhawm rau ultra-tshem cov khoom siv hlau (hlau ores, manga-nese ores, tooj liab ores. , lead-zinc ores, vanadium ores thiab lwm yam) thiab zom cov hlau tsis yog hlau (cov coal gangues, feldspar, nephe-line, dolomite, limestone, quartz, thiab lwm yam) rau hauv hmoov.