矿业工程
礦業工程
광업공정
MINING ENGINEERING
2014年
3期
31-34
,共4页
超贫磁铁矿%干式预选%高压辊磨
超貧磁鐵礦%榦式預選%高壓輥磨
초빈자철광%간식예선%고압곤마
ultra-lean magnetite%dye-type pre-separation%high pressure grinding roller
针对某地超贫铁矿石,在矿石特性研究基础上,进行了常规破碎-干式预选试验和高压辊磨超细碎-干式预选试验。确定了常规破碎-干式预选试验的适宜预选粒度为-2 mm,预选精矿铁品位为19.92%,抛尾率84.15%。高压辊磨机-2 mm产品的干式预选精矿铁品位为38.92%,抛尾率94.87%,可大幅减少后续磨机处理量。
針對某地超貧鐵礦石,在礦石特性研究基礎上,進行瞭常規破碎-榦式預選試驗和高壓輥磨超細碎-榦式預選試驗。確定瞭常規破碎-榦式預選試驗的適宜預選粒度為-2 mm,預選精礦鐵品位為19.92%,拋尾率84.15%。高壓輥磨機-2 mm產品的榦式預選精礦鐵品位為38.92%,拋尾率94.87%,可大幅減少後續磨機處理量。
침대모지초빈철광석,재광석특성연구기출상,진행료상규파쇄-간식예선시험화고압곤마초세쇄-간식예선시험。학정료상규파쇄-간식예선시험적괄의예선립도위-2 mm,예선정광철품위위19.92%,포미솔84.15%。고압곤마궤-2 mm산품적간식예선정광철품위위38.92%,포미솔94.87%,가대폭감소후속마궤처리량。
This article is aiming to study the pre-separation of one ultra-poor iron magnetite ore which has extremely low grade,and complex mineral composition.A fully study on ore characteristics was carried out,followed by dry pre-selection tests conducted on both conventional crushed products and high pressure grinding roller products.It’s identified that the optimal magnetite particle size for conventional crushing-dry-type pre-selection test is -2 mm, and primary concentrates produced in this way achieve 19.92% iron grade and 84.15% tailings discarding rate.For primary concentrates produced by high pressure grinding roller-dry-type pre-separation test where magnetite with -2mm particle size is used, its Fe grade is 38.92% and tailings discarding rate is 94.87%.The follow-up workload for mills can be significantly reduced by using high pressure grinding roller technology.
