某铁矿副矿体矿石对主矿体矿石分选流程的适应性试验

安徽某铁矿I号矿体为主矿体，属石英型磁铁矿石，铁品位为22.96%；Ⅱ、Ⅲ号矿体为硅

酸盐型含少量镜铁矿的磁铁矿石，铁品位26.99%；矿石中的主要脉石成分为SiO2；石英型磁铁矿石中

以磁铁矿形式存在的铁占总铁的 68.34%，硅酸盐型磁铁矿石中以磁铁矿形式存在的铁占总铁的

45.69%。为了减少Ⅱ和Ⅲ号矿体矿石入选对现有流程的影响，将石英型磁铁矿石与硅酸盐型磁铁矿

石分别按质量比2∶1、5∶1进行配矿，然后采用一段磨矿一段1粗1精弱磁选—二段磨矿二段1粗1精弱磁选—淘洗机精选流程处理，在一、二段磨矿细度分别为-0.075mm占45%和90%，弱磁选粗选、精选磁场强度分别为159.24 kA/m和119.43 kA/m的情况下，对应的

3种优质铁精矿铁品位70.06%、铁回收率 65.95%，铁品位 69.89%、铁回收率62.17%，铁品位 69.74%、铁回收率 58.08%。试验表明现场流程对Ⅱ和Ⅲ号矿体矿石入选的适应性较好。

I # ore body of an iron mine in Anhui is the main ore body，which belongs to quartz type

magnetite ore with iron grade of 22.96%.II# and III# ore bodies are silicate-type magnetite with a small

amount of specularite，with an iron grade of 26.99%. The main gangue component in the ore is SiO2. The

iron in the form of magnetite in quartz-type magnetite ore accounts for 68.34% of the total iron，and the

iron in the form of magnetite in silicate-type magnetite ore accounts for 45.69% of the total iron. In order

to reduce the impact of II# and III# ore bodies ore selection on the existing process，the quartz-type magne⁃

tite ore and silicate-type magnetite ore were mixed at a mass ratio of 2∶1 and 5∶1，respectively，and then

treated by one stage grinding one stage one roughing one cleaning low intensity magnetic separation-two

stage grinding two stage one roughing one cleaning low intensity magnetic separation-elutriation machine

cleaning selection process. When the grinding fineness of the one and two stages is -0.075 mm accounting

for 45% and 90% respectively，and the magnetic field strength of low intensity magnetic separation rough⁃

ing and cleaning is 159.24 kA/m and 119.43 kA/m respectively，the corresponding three high-quality iron

concentrates have iron grade of 70.06% and iron recovery of 65.95%，iron grade of 69.89% and iron recov⁃

ery of 62.17%，iron grade of 69.74% and iron recovery of 58.08%. It shows that the on-site process has a

good adaptability to the ore selection of II# and III# ore bodies.

摘要：

安徽某铁矿I号矿体为主矿体，属石英型磁铁矿石，铁品位为22.96%；Ⅱ、Ⅲ号矿体为硅

酸盐型含少量镜铁矿的磁铁矿石，铁品位26.99%；矿石中的主要脉石成分为SiO2；石英型磁铁矿石中

以磁铁矿形式存在的铁占总铁的 68.34%，硅酸盐型磁铁矿石中以磁铁矿形式存在的铁占总铁的

45.69%。为了减少Ⅱ和Ⅲ号矿体矿石入选对现有流程的影响，将石英型磁铁矿石与硅酸盐型磁铁矿

Abstract: