甘肃大滩某低品位钛铁矿石选矿试验

甘肃大滩某低品位钛铁矿主要有价元素为铁和钛，TFe品位为12.07%，TiO₂含量为5.56%，有害元素硫、磷含量较低。钛主要分布在钛铁矿中，分布率为81.82%，是回收的主要目的矿物。为确定该资源的合理开发利用方案，对其进行了磁选-浮选试验研究。结果表明，原矿磨细至-0.074 mm占38%，在粗选磁场强度为605.1 kA/m、精选磁场强度为565.3 kA/m条件下，经1粗1精磁选可以获得TiO₂品位为18.13%、对原矿回收率为76.79%的磁选精矿，磁选精矿采用自主复配合成的高效捕收剂EMG和新型抑制剂SF-101经1粗2精1扫闭路浮选试验可以获得TiO₂品位47.46%、回收率88.08%的钛精矿，对原矿回收率为67.63%，可以为该钛铁矿的选别提供借鉴。

Beneficiation Technology for a Low-grade Ilmenite Ore in Datan of Gansu Province

Main valuable elements of a low grade ilmenite ore are iron and titanium.There is 12.07% TFe，5.56% TiO2 and trace sulfur and phosphorus in the ore.Titanium mainly exists in form of ilmenite，with distribution ratio of 81.82%，which is the main recovery object.In order to insure the scheme for develop the ore，magnetic separation-flotation tests is carried out.The results show that，at the grinding fineness of 38% -0.074 mm，magnetic intensity of 605.1 kA/m for rough concentration and 565.3% kA/m for cleaning separation，through one roughing-one cleaning separation，magnetic concentrate with TiO2 grade of 18.13% and recovery of 76.79% is obtained.Using high efficient EMG as collector and novel SF-101 as depressor through one roughing-two cleaning-one scavenging process deal with the magnetic concentrate，titanium concentrate with TiO2 grade of 47.46% and recovery of 88.08% is obtained，and recovery of 67.63% for the raw ore.The results can provide references for beneficiation of the ilmenite ore.