Tus nqi qis sulfur calcined coke carburizer yog cuam tshuam los ntawm qhov kev thov ntawm cov dej hauv qab ntawm lub khw.Kev lag luam xav tau ntau dua, tus nqi siab dua, thiab tus nqi qis dua.

Txhawm rau tsim cov coke uas tsis muaj sulfur calcined, raw cov ntaub ntawv tseem ceeb heev.Yog tias cov roj av qis qis qis yog calcined ntawm 1250 ℃ rau tsawg kawg 48 teev, impurities xws li ya raws, tshauv thiab volatile Cheebtsam hauv roj av coke raug tshem tawm, yog li tus nqi qis sulfur calcined coke carburizer kuj yog ze ze rau tus nqi ntawm raw khoom.