在鋼鐵(tie)(tie)(tie)產品的冶煉過程(cheng)中(zhong)(zhong)，常常會因為冶煉時(shi)(shi)間(jian)、保溫時(shi)(shi)間(jian)、過熱時(shi)(shi)間(jian)較長(chang)等(deng)因素，使(shi)得鐵(tie)(tie)(tie)液中(zhong)(zhong)碳(tan)(tan)(tan)元素的熔煉損耗量(liang)(liang)增加，造(zao)成鐵(tie)(tie)(tie)液中(zhong)(zhong)的含碳(tan)(tan)(tan)量(liang)(liang)有(you)所降低，導致鐵(tie)(tie)(tie)液中(zhong)(zhong)的含碳(tan)(tan)(tan)量(liang)(liang)達不到煉制(zhi)預期的理論值。為了補足鋼鐵(tie)(tie)(tie)熔煉過程(cheng)中(zhong)(zhong)燒損的碳(tan)(tan)(tan)含量(liang)(liang)而添加的含碳(tan)(tan)(tan)類(lei)物(wu)質稱之(zhi)為增碳(tan)(tan)(tan)劑。