Study on process mineralogy of a low grade refractory vanadium-titanium magnetite ore in Xinjiang
In order to find out the ore properties of a low-grade refractory vanadium-titanium magnetite ore and the factors affecting the beneficiation index,carried out detailed process mineralogy research.The research shows that the ore is a low-grade vanadium-titanium magnetite ore of gabbro type.The grade of TiO2 is 4.53％,the grade of TFe is 14.06％and the content of other valuable elements is low.Titanomagnetite is the target mineral for beneficiation recovery of iron,in which the distribution rate of iron accounts for 47.892％of the total iron.Ilmenite is the target mineral for beneficiation recovery of titanium,and its distribution rate of titanium accounts for 60.881％of the total titanium.The solid solu-tion separation minerals,altered minerals chlorite and apatite are common in titanomagnetite.The particle size is fine and the dissemination is complex.It is difficult to effectively dissociate from titano-magnetite by grinding,and it is easy to be mixed with iron concentrate to affect the quality of iron con-centrate.The ilmenite also contains trace alteration minerals such as titanite and fine-grained titanomag-netite,apatite and sulfide.The addition of titanomagnetite to the ilmenite concentrate will lead to the in-crease of Ca,Mg,Si,S and P in the ilmenite concentrate,which will affect the quality of the concen-trate.At the same time,the lamellar ilmenite and ilmenite in titanomagnetite are difficult to be effect-ively dissociated by grinding,and it is easy to enter the iron concentrate with titanomagnetite in the iron separation process.This part of ilmenite is a reasonable loss.
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