Semi GPC (SGPC) yog los ntawm txheej rwb thaiv tsev ntawm acheson furnace.The graphitization kub yog nyob rau hauv thaj tsam ntawm 1700-2500ºC. Nws belongs rau themedium kub graphitization khoom. Nws yog kev lag luam recarburizer nrog cov pa roj carbon monoxide siab, qis cov ntsiab lus ntawm cov sulfur, sai sai dissolution tus nqi thiab siab nqus tus nqi.
