焦(jiao)(jiao)炭(tan)用(yong)(yong)(yong)途焦(jiao)(jiao)炭(tan)主(zhu)要(yao)用(yong)(yong)(yong)于高爐(lu)(lu)煉(lian)(lian)鐵和(he)用(yong)(yong)(yong)于銅、鉛、鋅、鈦、銻、汞等有(you)色金(jin)(jin)屬(shu)的鼓風(feng)爐(lu)(lu)冶煉(lian)(lian)，起還(huan)原(yuan)劑、發熱劑和(he)料柱骨架作用(yong)(yong)(yong)。煉(lian)(lian)鐵高爐(lu)(lu)采用(yong)(yong)(yong)焦(jiao)(jiao)炭(tan)代替木炭(tan)，為(wei)現(xian)代高爐(lu)(lu)的大(da)型化(hua)(hua)奠定了基(ji)礎，是(shi)冶金(jin)(jin)史(shi)上(shang)的一個重大(da)里程碑(bei)。為(wei)使高爐(lu)(lu)操作達到(dao)較好的技術經(jing)濟(ji)指標(biao)，冶煉(lian)(lian)用(yong)(yong)(yong)焦(jiao)(jiao)炭(tan)（冶金(jin)(jin)焦(jiao)(jiao)）必須具有(you)適當的化(hua)(hua)學性質和(he)物理性質，包括冶煉(lian)(lian)過程中(zhong)的熱態性質。焦(jiao)(jiao)炭(tan)除大(da)量用(yong)(yong)(yong)于煉(lian)(lian)鐵和(he)有(you)色金(jin)(jin)屬(shu)冶煉(lian)(lian)（冶金(jin)(jin)焦(jiao)(jiao)）外(wai)，還(huan)用(yong)(yong)(yong)于鑄(zhu)造、化(hua)(hua)工(gong)、電石和(he)鐵合金(jin)(jin)，其質量要(yao)求(qiu)有(you)所(suo)不(bu)同(tong)。如鑄(zhu)造用(yong)(yong)(yong)焦(jiao)(jiao)，一般(ban)要(yao)求(qiu)粒度(du)大(da)、氣(qi)孔率低(di)、固定碳(tan)高和(he)硫分低(di)；化(hua)(hua)工(gong)氣(qi)化(hua)(hua)用(yong)(yong)(yong)焦(jiao)(jiao)，對強度(du)要(yao)求(qiu)不(bu)嚴(yan)，但(dan)要(yao)求(qiu)反應(ying)性好，灰熔點較高；電石生產用(yong)(yong)(yong)焦(jiao)(jiao)要(yao)求(qiu)盡量提高固定碳(tan)含量。