选矿厂为提高过滤效率,减少溢流中金属流失,净化尾矿水和解决难以沉降的固液分离等问题,均需使用絮凝剂.我国在60年代前,一般都使用石灰、明矾、硫酸、盐酸等无机絮凝剂,以及淀粉、红薯粉、动物胶等天然高分子絮凝剂.以后又以豆油饼、菜油饼、花生油饼、土豆粉渣、海藻等天然植物加工的副产品制出新的天然高分子絮凝剂.无论是无机絮凝剂或是天然高分子絮凝剂,其种类和絮凝能力都是有限的,而且要消耗大量的农副产品.50年代后期,出现并应用了合成的乙烯基乙醇、甲基丁烯酸酰胺的共聚物、聚丙醛烯基腈、聚丙烯酰胺等高分 Concentrator in order to improve the filtration efficiency, reduce overflow metal loss, purification of tailings water and difficult to settle solid-liquid separation problems, the need to use flocculant.China in the 1960s, the general use of lime, alum, sulfuric acid, Hydrochloric acid and other inorganic flocculants, as well as natural macromolecule flocculants such as starch, sweet potato flour, animal glue etc. Afterwards, the new natural high-molecular flocculant is made from the by-products of natural plant processing such as soybean oil cake, vegetable oil cake, peanut oil cake, potato powder residue and seaweed Molecular flocculants. Whether inorganic flocculant or natural polymer flocculant, its type and flocculation capacity are limited, but also consume a large amount of agricultural and sideline products. The late 1950s, the emergence and application of synthetic vinyl alcohol, A A copolymer of a methacrylic acid amide, a polyacrylic acid nitrile, a polyacrylamide, and other high scores