Txawm hais tias cov hlau sulfide ntshiab tsis muaj tooj liab, kev sib raug zoo ntawm hlau sulfide thiab tooj liab tuaj yeem txhim kho nyob rau hauv qee yam mob. Piv txwv li, nyob rau hauv tej qhov chaw geological, hlau sulfide minerals yuav coexist nrog tooj liab- bearing minerals. Thaum lub sij hawm mining thiab refining, hlau sulfide cov zaub mov yuav nqus los yog sib txuas cov kab ntawm tooj liab.
Tsis tas li ntawd, hlau sulfide tuaj yeem cuam tshuam nrog tooj liab thaum qee cov tshuaj tiv thaiv lossis cov txheej txheem. Piv txwv li, hauv metallurgy, hlau sulfide tuaj yeem siv los ua tus neeg saib xyuas kom txo tau cov tooj liab. Qhov no tsis tas txhais tau hais tias cov hlau sulfide nws tus kheej muaj tooj liab, tab sis nws cuam tshuam nrog tooj liab thaum cov tshuaj tiv thaiv.