摘要
The technological mineralogy of the potash feldspar was investigated and a new collector named Yb105 was adopted to remove iron from potash feldspar ores.The technological mineralogy results indicate that the main components of the ore were feldspar,sericite,quartz and kaolinite,and iron mainly existed in limonite and hematite,most of which can be removed by beneficiation.The results show the benzohydroxamic acid can not only increase the recovery of iron and reduce the consumption of oleic acid collector,but also enhance the collecting performance of oleic acid at low temperature,which can realize the flotation of the ores at a low temperature and play an important role in saving energy to some extent.Compared with oleic oil,the benzohydroxamic acid had a great advantage in removing iron from potash feldspar,a potash feldspar concentrate with Fe grade of 0.23%,K2O grade of 12.59%and Na2O grade of 0.26%was obtained by flotation with Yb105 as collector,and the yield of the concentrate was 82.55%.
研究湖南某地钾长石矿石的工艺矿物学,并设计开发了新型捕收剂Yb105强化浮选分离钾长石矿石中的铁矿物。工艺矿物学研究表明,实验矿石的主要成分为长石、绢云母、石英和高岭石等,铁主要赋存于褐铁矿和赤铁矿中,其中大部分可通过选矿去除,但各矿物之间堪布紧密,难以高效地浮选分离含铁矿物。研究表明,苯并异羟肟酸不仅可以提高铁的去除率,减少油酸捕收剂的消耗,而且可以提高油酸在低温下的捕收性能,实现钾长石在低温下的浮选,这在一定程度上对节能是十分重要的;与油酸相比,苯甲羟肟酸对钾长石脱除铁有明显的强化,以Yb105为捕收剂,通过浮选可得到铁品位0.23%,K_2O品位12.59%,Na_2O品位0.26%的优质钾长石精矿,精矿产率为82.55%。
基金
Project(21776320)supported by the National Natural Science Foundation of China
Project(2016TP1007)supported by the Hunan Provincial Science and Technology Plan Project,China
作者简介
Corresponding authors:WANG Shuai,PhD,Professor;Tel:+86–731–88836603,Fax:+86–731– 88879616;E-mail:wangshuai@csu.edu.cn;ORCID:0000-0002-1678-0211;Corresponding authors:ZHONG Hong,PhD,Professor;Tel:+86–731– 88836603,Fax:+86–731–88879616;E-mail:zhongh@csu.edu.cn;ORCID:0000-0002-9536-2172
