摘要
通过对棕榈酸进行结构功能修饰和功能团的衍生,合成了α-磺酸基棕榈酸钠(SPA)捕收剂,其对白云石和氟磷灰石具有显著的分选差异性。实验结果表明单矿物浮选中当pH值接近于5,该新型捕收剂用量为6×10-5 mol/L时,其对白云石的回收率为87.65%,而对氟磷灰石仅为35.63%。采用Zeta电位、SEM、EDX和XPS等多种分析手段探讨了该捕收剂与矿物表面的作用机理,论证了该捕收剂在白云石和氟磷灰石表面的吸附属于化学吸附。
Based on the modification of the structure and function of palmitic acid and derivation of functional groups,theα-sulfonate-palmitic acid collector(SPA)was synthesized,which showed highly different selectivity for collecting dolomite and fluorapatite.The results of the single mineral flotation test showed that the recovery of dolomite was 87.65%while the recovery of fluorapatite was only 35.63%with the pH value close to 5 and the SPA dosage of 6×10-5 mol/L.A variety of analytical methods such as Zata potential,SEM,EDX and XPS were used to investigate the mechanism of action of the collector on the mineral surface,which confirmed the adsorption of this collector on the surface of dolomite and fluorapatite is chemical adsorption.
作者
梁欢
代典
何东升
潘志权
LIANG Huan;DAI Dian;HE Dongsheng;PAN Zhiquan(Wuhan Institute of Technology,National Engineering and Technology Research Center for Development﹠Utilization of Phosphorus Resources,Wuhan 430073,China)
出处
《矿产保护与利用》
2020年第2期23-29,共7页
Conservation and Utilization of Mineral Resources
基金
湖北省技术创新专项对外科技合作类(X19S012)
湖北省尾矿(渣)资源化利用工程技术研究中心项目(ZYYD201900072)。
关键词
磷矿
氟磷灰石
白云石
磺酸基脂肪酸
浮选
phosphate ore
fluorapatite
dolomite
sulfo fatty acid
flotation
