矿冶工程
礦冶工程
광야공정
Mining and Metallurgical Engineering
2015年
5期
39-41,45
,共4页
马浩%陈铁军%黄献宝%苏涛%屈万刚
馬浩%陳鐵軍%黃獻寶%囌濤%屈萬剛
마호%진철군%황헌보%소도%굴만강
镜铁矿%磁化焙烧%弱磁选%铁精矿
鏡鐵礦%磁化焙燒%弱磁選%鐵精礦
경철광%자화배소%약자선%철정광
specularite%magnetizing roasting%low intensity magnetic separation%iron concentrate
以甘肃地区镜铁矿粉矿为原料,采用磁化焙烧-弱磁选工艺,研究了焙烧温度、焙烧时间、还原剂用量、磨矿细度、磁场强度等对磁选效果的影响. 结果表明,在煤粉用量2%、焙烧温度800 ℃、焙烧时间60 min条件下焙烧,再在磨矿细度-0.074 mm粒级占85.36%、磁场强度92.16 kA/m条件下磁选,可得到品位为54.95%、回收率为88.92%的弱磁选精矿.
以甘肅地區鏡鐵礦粉礦為原料,採用磁化焙燒-弱磁選工藝,研究瞭焙燒溫度、焙燒時間、還原劑用量、磨礦細度、磁場彊度等對磁選效果的影響. 結果錶明,在煤粉用量2%、焙燒溫度800 ℃、焙燒時間60 min條件下焙燒,再在磨礦細度-0.074 mm粒級佔85.36%、磁場彊度92.16 kA/m條件下磁選,可得到品位為54.95%、迴收率為88.92%的弱磁選精礦.
이감숙지구경철광분광위원료,채용자화배소-약자선공예,연구료배소온도、배소시간、환원제용량、마광세도、자장강도등대자선효과적영향. 결과표명,재매분용량2%、배소온도800 ℃、배소시간60 min조건하배소,재재마광세도-0.074 mm립급점85.36%、자장강도92.16 kA/m조건하자선,가득도품위위54.95%、회수솔위88.92%적약자선정광.
A flowsheet of magnetizing roasting-low intensity magnetic separation ( LIMS ) was adopted to treat a fine specularite ore from Gansu, and the influence of processing parameters including roasting temperature, roasting time, coal dosage, grinding fineness and magnetic field intensity on separation efficiency was investigated. The results show that with coal powder dosage of 2% and roasting process at 800 ℃ for 60 min, with grinding fineness of -0. 074 mm 85.36% and beneficiation at a magnetic field intensity of 92. 16 kA/m, a LIMS iron concentrate with iron grade and recovery of 54.95% and 88.92%, respectively, can be prepared.
