磷矿石是磷化工生产的重要原料,在国民经济的发展中占有重要地位。磷矿石入选品位的降低、有用矿物与脉石矿物性质相似、矿物嵌布粒度过细等不利因素影响着磷矿选矿技术的发展。通过研究药剂与矿物之间的相互作用机理有助于改善矿物的选别效果,综述了磷矿石的重要性和浮选现状,着重研究了偏磷酸钠在中低品位磷矿石浮选中的应用及作用机理。

Phosphate rock is an important raw material for phosphorus chemical production, and plays an important role in the development of national economy. The development of phosphate ore dressing technology is affected by such unfavorable factors as the reduction of beneficiation grade of phosphate ore, the similarity of useful minerals and gangue minerals, and the fine particle size of minerals. The research on the interaction mechanism between reagents and minerals is helpful to improve the separation effect of minerals. The importance and flotation status of phosphate ores are summarized, and the application and mechanism of sodium metaphosphate in the flotation of low-grade phosphate ores are emphatically studied.

氢氧化钾厂家研究发现偏磷酸钠在磷矿石浮选中有两个主要作用:

Potassium hydroxide manufacturers found that sodium metaphosphate has two main functions in phosphate rock flotation:

一是偏磷酸钠的加入会与捕收剂在磷灰石矿物表面形成竞争吸附,抑制捕收剂在磷灰石矿物表面的吸附,从而改变矿物的亲疏水性。

First, the addition of sodium metaphosphate will form competitive adsorption with the collector on the surface of apatite mineral, inhibit the adsorption of collector on the surface of apatite mineral, and thus change the hydrophobicity of mineral.

二是偏磷酸钠的加入会引起矿物表面电荷发生改变,使得矿物颗粒间相互作用力随之发生改变,增加矿物颗粒的分散性,从而优化矿物浮选条件。

Secondly, the addition of sodium metaphosphate will change the mineral surface charge, which will change the interaction between mineral particles, increase the dispersion of mineral particles, and optimize the mineral flotation conditions.

偏磷酸钠在浮选过程中还起到分散剂的作用。在镍矿浮选过程中，蛇纹石泥化后覆盖在镍黄铁矿表面，对浮选过程非常不利。因此添加一定量的偏磷酸钠对镍黄铁矿的浮选回收非常有利，这主要是偏磷酸钠的添加使得浮选矿浆分散，减少了蛇纹石在镍黄铁矿表面的覆盖。

Sodium metaphosphate also acts as a dispersant in the flotation process. In the nickel ore flotation process, serpentine is slimed and covered on the surface of pentlandite, which is very unfavorable to the flotation process. Therefore, adding a certain amount of sodium metaphosphate is very beneficial to the flotation recovery of pentlandite, mainly because the addition of sodium metaphosphate disperses the flotation pulp and reduces the coverage of serpentine on the surface of pentlandite.

它的分散机理主要表现为：使矿物表面电位降低，使矿物颗粒之间的静电排斥力增加。因为偏磷酸钠是一种直链状聚合化合物，其链长少能达到20～100个单位，当它吸附在矿物表面时，会使颗粒之间的空间位阻效应增大。

Its dispersion mechanism is mainly as follows: it reduces the surface potential of minerals and increases the electrostatic repulsion force between mineral particles. Because sodium metaphosphate is a straight chain polymer, its chain length can rarely reach 20~100 units. When it is adsorbed on the mineral surface, the steric effect between particles will increase.

此外在油田工业中偏磷酸钠作为钻井泥浆添加剂可以避免多价金属离子沉淀，提高泥浆的抗盐能力，降低泥浆失水。此外将一定量的偏磷酸钠溶解后注入水管中，可以在管壁形成一层薄膜，以防止管道腐蚀。更多相关的信息了解就来我们网站http://www.jinhao360.com咨询看看吧！

In addition, sodium metaphosphate as drilling mud additive in oilfield industry can avoid multivalent metal ion precipitation, improve the salt resistance of mud and reduce mud water loss. In addition, a certain amount of sodium metaphosphate is dissolved and injected into the water pipe to form a film on the pipe wall to prevent pipe corrosion. For more information, please come to our website http://www.jinhao360.com Consult!