摘要
对攀西钒钛磁铁矿进行了高压辊磨超细碎及其选别试验.当入料d80为15.5 mm时,辊压中料-3.2 mm产率为91.05%,-0.074 mm产率为15.29%,P80降低至1.55 mm,边料及闭路循环工艺对粉碎产品粒度特性的影响也非常明显.采用"铁钛平行分选"工艺对高压辊磨超细碎的-3.2 mm攀西钒钛磁铁矿进行了选别试验.结果表明,选铁流程在磨矿细度为-0.074 mm占45%时,铁精矿Fe品位可达55.05%,回收率70.64%;选钛流程在-0.074 mm占80%时,钛精矿TiO2品位47.78%,回收率35.16%.
Experiments of ultra-fine comminution by HPGR and separation on V-Ti magnetite in Panxi w ere done.When d 80 of feeding is 15.5 mm,the yield of-3.2 mm for the roll grinding centre product is 91.05%,the yield of-0.074 mm is 15.29% and P 80 of roll grinding products is reduced to 1.55 mm.The effect of circulation technology of edge product and closed-circuit on the size characteristics of crushed product w as very obvious.Separating tests w ere performed on-3.2 mm Panxi V-Ti magnetite from ultra-fine comminution by HPGR using process of parallel separation of Fe and Ti.The results show w hen grind fineness is-0.074 mm 45%,Fe grade of iron concentrate is 55.05% and recovery is 70.64% in iron separation flow sheet,w hile TiO 2 grade of titanium concentrate is 47.78% and recovery is 35.16% in titanium separation flow sheet at-0.074 mm 80%.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第9期1335-1338,共4页
Journal of Northeastern University(Natural Science)
基金
国家科技支撑计划项目(2012BAB14B05)
教育部新世纪优秀人才支持计划项目(NCET-10-0308)
国家高技术研究发展计划项目(2012AA062301)
关键词
高压辊磨机
料层粉碎
超细碎
攀西钒钛磁铁
铁钛平行分选
high-pressure grinding roll（HPGR）
interparticle comminution
ultra-fine comminution
V-Ti magnetite in Panxi
parallel separation of Fe and Ti
