摘要
攀西地区某选厂浮钛精矿品位为46.84%,其中脉石矿物SiO_(2)、CaO不利于后续氯化法制钛白粉。加入抑制剂(酸化水玻璃、硫酸、水玻璃、氟硅酸钠以及木质素),均可有效抑制脉石矿物上浮,提高钛精矿品位,其中硫酸和木质素效果较好,综合成本确定硫酸为提质浮选抑制剂。采用一次浮选流程考察搅拌时间、硫酸用量、捕收剂用量对最终钛精矿品位和回收率的影响,确定搅拌时间10 min、硫酸用量2000g/t、MOH用量2000 g/t为最佳浮选条件。在最佳浮选条件下,经过一粗一精浮选流程,可将钛精矿品位由46.84%提升至50.04%,钛精矿回收率为41.93%,且CaO+SiO_(2)≤1.5%,满足提质要求。
The floating titanium concentrate grade of a concentrator in Panxi area is 46.84%,among which gangue minerals SiO_(2) and CaO are not conducive to the subsequent chlorination process of titanium dioxide.Adding inhibitors to acidified sodium silicate,sulfuric acid,sodium silicate,sodium fluorosilicate and lignin can effectively inhibit gangue minerals from floating and improve the grade of titanium concentrate,among which sulfuric acid and lignin show the best effect,and sulfuric acid is determined to be the quality improvement flotation inhibitor.The effects of stirring time,sulfuric acid dosage and collector dosage on the final grade and recovery of titanium concentrate were investigated by a single flotation process.The optimal flotation conditions were determined to be stirring time of 10 min,sulfuric acid dosage of 2000 g/t and MOH dosage of 2000 g/t.Under the optimal flotation conditions,the grade of titanium concentrate can be increased from 46.84%to 50.04%,the recovery rate of titanium concentrate is 41.93%,and the CaO+SiO_(2)≤1.5%,which meets the quality improvement requirements.
作者
苏馨
胡厚勤
王洪彬
Su Xin;Hu Houqin;Wang Hongbin(Design and Research Institute of Mining Co.,Ltd.,Pangang Group,Panzhihua 617063,Sichuan,China)
出处
《钢铁钒钛》
CAS
北大核心
2023年第6期88-92,共5页
Iron Steel Vanadium Titanium
