众所周知,组分简单的矿石中,锡石易于用脂肪酸类捕收剂或其衍生物浮选。这类捕收剂的主要缺点是选择性差,对矿浆的离子组分高度敏感。因此,甚至对于易浮的矿石,也在大力进行药剂和用药制度的探索,以期达到对重金属离子和盐类以及水硬性盐类的存在较为不敏感,浮选过程较有选择性和较为经济。对于含大量氢氧化铁和电气石的微细嵌布矿石和矿泥,问题就尤为尖锐。为此目的而采用的ИМ-50药剂,具有许多根本的弱点:对矿浆中 It is well-known that cassiterite is easily flotated with fatty acid collectors or its derivatives among the simple components of ores. The main disadvantage of these collectors is their poor selectivity, which is highly sensitive to the ionic components of the pulp. Therefore, even for easily floating ore, efforts are also being made to explore the drug and drug regimes so as to be insensitive to the presence of heavy metal ions and salts and hydraulic salts, and the flotation process is more selective and economical. The problem is especially acute for finely milled ores and slimes that contain large amounts of iron hydroxide and tourmaline. The ИМ-50 agent used for this purpose has many fundamental weaknesses: in pulp