焦炭(tan)用(yong)(yong)途焦炭(tan)主要(yao)(yao)用(yong)(yong)于(yu)(yu)(yu)(yu)高爐煉(lian)鐵(tie)和(he)(he)用(yong)(yong)于(yu)(yu)(yu)(yu)銅、鉛、鋅、鈦、銻、汞等有(you)色金(jin)屬的鼓風爐冶煉(lian)，起還(huan)原(yuan)劑、發熱劑和(he)(he)料柱骨架作用(yong)(yong)。煉(lian)鐵(tie)高爐采(cai)用(yong)(yong)焦炭(tan)代替木炭(tan)，為(wei)現代高爐的大型化(hua)奠定了基(ji)礎，是冶金(jin)史上的一(yi)個重大里程碑。為(wei)使(shi)高爐操(cao)作達(da)到較好的技術(shu)經(jing)濟指標，冶煉(lian)用(yong)(yong)焦炭(tan)（冶金(jin)焦）必須(xu)具有(you)適當的化(hua)學性質(zhi)(zhi)和(he)(he)物理性質(zhi)(zhi)，包(bao)括冶煉(lian)過程中的熱態性質(zhi)(zhi)。焦炭(tan)除大量用(yong)(yong)于(yu)(yu)(yu)(yu)煉(lian)鐵(tie)和(he)(he)有(you)色金(jin)屬冶煉(lian)（冶金(jin)焦）外，還(huan)用(yong)(yong)于(yu)(yu)(yu)(yu)鑄(zhu)造、化(hua)工、電(dian)石(shi)和(he)(he)鐵(tie)合金(jin)，其(qi)質(zhi)(zhi)量要(yao)(yao)求(qiu)(qiu)有(you)所不同。如(ru)鑄(zhu)造用(yong)(yong)焦，一(yi)般要(yao)(yao)求(qiu)(qiu)粒(li)度大、氣孔率(lv)低、固定碳(tan)高和(he)(he)硫分低；化(hua)工氣化(hua)用(yong)(yong)焦，對強度要(yao)(yao)求(qiu)(qiu)不嚴，但要(yao)(yao)求(qiu)(qiu)反應性好，灰熔點(dian)較高；電(dian)石(shi)生(sheng)產用(yong)(yong)焦要(yao)(yao)求(qiu)(qiu)盡(jin)量提高固定碳(tan)含量。