Cov Tshauv thiab Cov Tshuaj Sulfur Tsawg: Cov txheej txheem calcination txo cov tshauv thiab cov tshuaj sulfur hauv petroleum coke, ua rau nws tsim nyog rau cov ntawv thov uas xav tau cov qib impurity tsawg. Cov tshuaj sulfur tsawg yog qhov tseem ceeb hauv kev ua hlau, vim nws pab txo cov pa phem ib puag ncig thiab txhim kho cov khoom zoo.
