【摘要】 从钾矿性质和浮选技术2个方面对盐湖含泥钾矿进行资源化利用研究,首先运用X射线荧光光谱、X射线衍射和扫描电镜对含泥钾矿的矿泥化学组成及其结构特征进行了分析,其次选用盐酸十八胺和煤油为浮选药剂,对浮选法脱除钾矿中泥进行了研究。结果表明,盐湖矿泥中70%以上为以长石、粘土和粉砂等为主的硅铝酸盐;矿泥多充填包裹于盐类矿物粒晶间,或单独以微薄片层结构分布;盐酸十八胺对矿泥浮选效果差,低于1%,但矿泥却消耗大量的十八胺药剂;煤油在饱和卤水中对含泥量为20%~50%的钾矿除泥率>50%。本研究可为低品位钾资源的高效利用提供有力的技术支撑。更多还原

【Abstract】 The slime-containing potash ores of Qinghai salt lake were studied from two aspects,properties of potash ore and flotation desliming technic,properties of potash ore and flotation desliming technic.The chemical compositions and structural characteristics of the slime-containing potash ores were determined by X-ray fluorescence spectrometry,X-ray diffraction analysis and scanning electron microscope.Factors which influence the desliming of potash ores by flotation were investigated.In the flotation,octadecylamine and kerosene were selected as floating agents.The results showed that more than 70% of the slimes were aluminium silicates which contained feldspar,caly,silty,calcium salt,etc.Most of slimes fill among the crystal particles of salt minerals or exist in micro-film structure.Slimes have high affinity for amine collectors,but they are badly flotated by octadecylamine(the flotation efficient was less than 1%).In the saturated brine,the desliming efficient of potash ores containing 20%~50% insolubles by kerosene was higher than 50%.This study can provide a powerful technical support for low grade potassium resource utilization.更多还原