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在钾盐矿石的浮选中遇到的主要问题是,由粘土所引起的有害影响和粗粒氯化钾浮选性差,粘土矿物的含量即使只占2～8％,也要增加浮选矿浆的粘度,并造成一个很大的吸附浮选药剂(不论是抑制剂、捕收剂或起泡剂)的表面积。其结果使药剂消耗量过高。由于钾盐矿物组成的解离粒度较粗,而粗颗粒不易优先浮选是另一主要不利之处。 除用普通的脱泥方法脱除粘土外,列宁格勒矿业学院讨论了另一种技术。这种技术的基本点是用适宜的聚合物去絮凝粘土或阻止阳离子捕收剂的吸附。药剂的阻隔作用亦可阻止水进入粘土薄片间,从而避免粘土涨大。 粗粒钾盐浮游性的改进,可用改变药剂的组合及(或)添加顺序来加以实现。后者的实例即所谓“泡沫分离”技术,采用此种技术可使预先调节好的浮选矿浆沉积在泡沫柱上,而让亲水矿物下沉,同时疏水矿物保留在上面,从而排除了在机械浮选槽里多余的离心力。 1976年在不列颠哥伦比亚大学,曾研究过钾盐浮选系统中捕收剂的吸附机理。按此机理的推论,可以降低捕收剂的过量消耗。
The main problems encountered in the flotation of potash ore are that the detrimental effects caused by the clay and the flotation of coarse-grained potassium chloride are poor, and even if the clay mineral content is only 2 to 8%, the flotation slurry is also increased Viscosity and cause a large surface area for adsorption flotation reagents (whether inhibitors, collectors or foaming agents). As a result, the drug consumption is too high. Another major disadvantage is the dissociation of potash mineral components that is coarser in grain size and less prone to flotation of coarse particles. In addition to removing the clay by conventional desliming methods, the Leningrad Mining Institute discusses another technique. The basic point of this technique is to use the appropriate polymer to flocculate the clay or prevent the adsorption of the cationic collector. The blocking effect of the agent also prevents water from entering the clay sheet, thus avoiding the clay swelling. The improvement of the coarse-grained potassium salt floatation can be achieved by changing the combination of agents and / or the order of addition. An example of the latter is the so-called “foam separation” technology, by which a pre-regulated flotation slurry is deposited on a foam column while the hydrophilic mineral is sunk while the hydrophobic mineral remains on it, Excess centrifugal force in mechanical flotation tank. In 1976 at the University of British Columbia, has studied the adsorption mechanism of collectors in the potassium salt flotation system. According to this mechanism of reasoning, you can reduce the excessive consumption of collectors.