發(fā)布時間：2018-07-26 17:37

【摘要】：為提高硼鎂石浮選回收率,使用六偏磷酸鈉減小蛇紋石對浮選的不利影響。通過浮選試驗、zeta電位測試、傅里葉紅外光譜分析、XPS分析及DLVO理論等手段,研究蛇紋石粒度、含量以及六偏磷酸鈉(SHMP)對硼鎂石浮選的影響,并對礦物顆粒間的相互作用以及六偏磷酸鈉的作用機理進行分析。結果表明,蛇紋石與硼鎂石顆粒間易發(fā)生團聚作用,且蛇紋石粒度對硼鎂石浮選結果影響十分顯著。與粗粒級蛇紋石相比,粒徑小于38μm的蛇紋石能顯著降低硼鎂石的回收率。加入SHMP后,蛇紋石對硼鎂石浮選的不利影響得到明顯減弱。機理研究表明,SHMP能影響蛇紋石與硼鎂石礦物表面電荷,從而阻礙顆粒間團聚的發(fā)生,使礦物顆粒在礦漿中呈良好的分散狀態(tài),有利于硼鎂石的浮選。此外,SHMP通過氫鍵與化學吸附作用于蛇紋石表面,并生成一種絡合物使蛇紋石的可浮性降低。
[Abstract]:Sodium hexametaphosphate was used to reduce the adverse effect of serpentine on flotation in order to improve the recovery rate of borneyite flotation. The effects of particle size and content of serpentine and sodium hexametaphosphate (SHMP) on the flotation of boron magnesia were studied by means of flotation test, Fourier transform infrared spectroscopy (FTIR) and DLVO theory. The interaction between mineral particles and the mechanism of sodium hexametaphosphate were analyzed. The results show that agglomeration occurs easily between serpentine and magnesia particles, and the effect of serpentine particle size on the flotation results is very significant. Compared with coarse serpentine, serpentine with diameter less than 38 渭 m can significantly reduce the recovery rate of boron magnesia. After the addition of SHMP, the adverse effect of serpentine on the flotation of boromite was obviously weakened. The mechanism study shows that SHMP can affect the surface charge of serpentine and bornesite minerals, which hinders the occurrence of agglomeration between particles and makes the mineral particles in a good dispersion state in slurry, which is beneficial to the flotation of boron magnesia. In addition, SHMP acts on the surface of serpentine by hydrogen bond and chemisorption, and forms a complex to reduce the floatability of serpentine.
【作者單位】： 東北大學資源與土木工程學院;
【基金】：Project(51204033) supported by the National Natural Science Foundation of China Project(L2014088) supported by Liaoning Provincial Education Department of China
【分類號】：TD923;TD97

【相似文獻】

相關期刊論文 前10條

1 關明久;;遂安石硼鎂石建造的硼礦選礦研究[J];礦產(chǎn)綜合利用;1991年03期

2 李艷軍;韓躍新;朱一民;;硼鎂石浮選特性研究[J];東北大學學報(自然科學版);2007年07期

3 程仁舉;鄧善芝;李艷軍;包士雷;;低品位硼鎂石的選別分離基礎研究[J];有色礦冶;2010年06期

4 譚之海;湯建良;童_秤，

本文編號：2146769