摘要
对江西某钽铌矿尾矿中长石、云母和石英进行了选矿回收研究。采用了"磨矿-筛分(选粗云母)-高梯度强磁选(除铁、云母)-螺旋分级(脱泥)"混合粗选工艺,长石、石英、云母混合粗精矿浮选分离精选工艺。经过除铁试验,获得含铁为0.18%的混合粗精矿,进一步脱除云母后,进行了正交试验研究长石石英浮选分离,得到长石浮选最优工艺条件为:草酸用量500 g/t,六偏磷酸钠用量600 g/t,十二胺用量800 g/t,石油磺酸钠用量500 g/t。正交试验表明通过草酸活化之后,长石的可浮性明显增加。最终获得可作为陶瓷工业原料的钾长石精矿和适用于玻璃工业原料的石英精矿,伴随回收部分碎云母,实现尾矿综合利用。
Research had been conducted to study the recovery of mineral processing tailings containing feldspar, mica and quartz from a tantalum niobium ore in Jiangxi Province. Mixed coarse process had been adopted with ＂grinding and screening（coarse mica）- high gradient strong magnetic separation（remove iron, mica）- screw classification（remove mud）＂, separation process was conducted with feldspar, quartz and mica rough cencentrate. After the iron removal test, mixed crude concentrate with 0.18% Fe was obtained. After further removal of mica, orthogonal experiments were carried out to study the flotation separation of feldspar and quartz. It is concluded that the optimal process of flotation went with the following conditions： oxalic acid dosage 500 g/t, six sodium metaphosphate dosage 600 g/t, twelve amine dosage 800 g/t, and petroleum sodium sulfonate dosage 500 g/t. The orthogonal experiments showed that the flotation of feldspar was obviously increased after the activation of oxalic acid. Potassium feldspar concentrate suitable for ceramic industrial and quartz concentrate suitable for glass industry had been separated during the test. With the recovery of partially broken mica, the comprehensive utilization of tailings had been achieved.
出处
《非金属矿》
CAS
CSCD
北大核心
2016年第1期14-16,20,共4页
Non-Metallic Mines
基金
贵州省科技厅基金(黔科合J字[2012]2174号)
关键词
尾矿
综合利用
长石
石英
云母
正交试验
tailings
comprehensive utilization
feldspar
quartz
mica
orthogonal experiment
