矿冶工程
礦冶工程
광야공정
2014年
5期
93-96
,共4页
于春晓%孙体昌%徐承焱%高恩霞%刘志国%刘真真
于春曉%孫體昌%徐承焱%高恩霞%劉誌國%劉真真
우춘효%손체창%서승염%고은하%류지국%류진진
海滨砂矿%煤泥%钛磁铁矿%直接还原焙烧%磁选
海濱砂礦%煤泥%鈦磁鐵礦%直接還原焙燒%磁選
해빈사광%매니%태자철광%직접환원배소%자선
beach placer%coal slime%titanomagnetite%direct reduction roasting%magnetic separation
以印尼某海滨钛磁铁矿为原料，煤泥作还原剂，研究了煤泥种类及用量、添加剂用量和直接还原焙烧过程中的焙烧时间、焙烧温度等对铁产品TFe品位与回收率、TiO2含量的影响。结果表明，煤泥可代替煤粉作还原剂；通过煤泥与添加剂的共同作用，能够达到降低最终直接还原铁中钛含量的目的。在煤泥TJ用量18％、添加剂YSE用量8％、YHG用量3％，1250℃下焙烧60 min时，得到的焙烧产物经过两段磨矿两段磁选，最终铁产品中全铁品位达92．72％，回收率达91．93％，TiO2含量降至0．72％。
以印尼某海濱鈦磁鐵礦為原料，煤泥作還原劑，研究瞭煤泥種類及用量、添加劑用量和直接還原焙燒過程中的焙燒時間、焙燒溫度等對鐵產品TFe品位與迴收率、TiO2含量的影響。結果錶明，煤泥可代替煤粉作還原劑；通過煤泥與添加劑的共同作用，能夠達到降低最終直接還原鐵中鈦含量的目的。在煤泥TJ用量18％、添加劑YSE用量8％、YHG用量3％，1250℃下焙燒60 min時，得到的焙燒產物經過兩段磨礦兩段磁選，最終鐵產品中全鐵品位達92．72％，迴收率達91．93％，TiO2含量降至0．72％。
이인니모해빈태자철광위원료，매니작환원제，연구료매니충류급용량、첨가제용량화직접환원배소과정중적배소시간、배소온도등대철산품TFe품위여회수솔、TiO2함량적영향。결과표명，매니가대체매분작환원제；통과매니여첨가제적공동작용，능구체도강저최종직접환원철중태함량적목적。재매니TJ용량18％、첨가제YSE용량8％、YHG용량3％，1250℃하배소60 min시，득도적배소산물경과량단마광량단자선，최종철산품중전철품위체92．72％，회수솔체91．93％，TiO2함량강지0．72％。
With a kind of seaside titanomagnetite from Indonesia as a raw material and coal slime as a reductant, effects of types and dosage of coal slime, additive dosage, roasting time and temperature for direct reduction roasting process on TFe grade and TiO2 content were investigated. Results showed that coal slime instead of coal powder as reducing agent, reacting with other additives, resulted in the content of titanium in DRI significantly reduced. In the test, with coal slime TJ at the dosage of 18%, additives of YSE and YHG at the dosage of 8%and 3%, respectively, a product obtained after roasting at a temperature of 1 250 ℃for 60 min, was then subjected to two?stage grinding and two?stage magnetic separation, resulting in a final DRI with TFe grade of 92.72%at the recovery of 91.93%, with TiO2 content falling to 0.72%.
