摘要:
通过激光显微光谱分析、光谱半定量分析和电子探针定量分析等手段,对攀枝花某地钒钛磁铁矿的化学成分、物相组成和有益元素的赋存状态进行了详细的研究,根据该钒钛磁铁矿的成分及物相特点,制定了适宜的选矿方案:原矿经破碎、一段闭路磨矿,进行二次磁选,一次扫选获得钒铁精矿;从磁选尾矿中回收粒状钛铁矿,分选工艺流程为:溜槽与螺旋选矿-浮选(硫化矿物)-电选流程。在实验室条件下,进行了选矿基础试验研究,试验表明:当磨矿粒度达0.2 mm(表外矿为0.15 mm)时,钒铁精矿铁品位为55%左右;采用电选方法可使钛铁矿与辉石有效分离,获得含钛量较高的钛铁矿产品,采用粗粒的浮选泡沫经过再磨再选,可使最终硫钴精矿的钴含量达到0.38%。
Abstract:
With the laser microscopic spectral analysis,spectrum quantitative analysis,electronic quantitative analysis,the chemical compositions,phase component and the storage state of usefull elements of vanadic titanomagnetite are in detailed researched.According to the compositions and phase of the vanadic titanomagnetite,appropriate scheme is formulated.Through broken and grinding in a closed road,the original ore carry on with two times of magnetic separation and one time of scavenging,then the ferrovanadium concentrate is gained.Granulous ilmenite is gained from magnetic separation tailings,satisfactions process:chute and spiral milling-flotation(sulfur minerals)-electrical select process.The basic experiment study is carried on in the laboratory.Experiments indicate that when the grinding granularity rise up to 0.2 mm(the outside of the mine is 0.15 mm) and the iron grade in ferrovanadium concentrate is about 55%;titanium mineral and pyroxe ne have been separated by the electrical select and ilmenite of high titanium content is gained.when coarse grains gained in floatation are grinded again,the cobalt content in the sulphur cobalt concentrate can rise up to 0.38%.
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