Abstract

The capacity of novel selective dithiocarbamate collectors, namely, morpholine dithiocarbamate (MDTC) and S-cyanoethyl N, N-diethyldithiocarbamate (CEDETC) to form complex compounds with gold on the surface of sulphide minerals containing fine gold under conditions of flotation is experimentally proved. MDTC adsorption at the surface of chalcopyrite without gold takes places due to formation of morpholine dithiocarbamate copper. At chalcopyrite and arsenopyrite containing gold fines, MDTC-Au and CEDETC-Au compounds are formed. MDTC and CEDETC improve floatability of gold-bearing sulphides as against gold-free minerals, which is beneficial for the production of Au–Cu concentrates with lower content of As and Fe by flotation.

中文翻译：

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环状和脂肪族二硫代氨基甲酸酯捕收剂在复杂矿石中含金硫化物中的适用性实验证明

摘要

实验证明了新型选择性二硫代氨基甲酸盐捕收剂，即吗啉二硫代氨基甲酸盐（MDTC）和S-氰乙基N，N-二乙基二硫代氨基甲酸盐（CEDETC）在浮选条件下在含细金的硫化物矿物表面与金形成络合物的能力。由于吗啉二硫代氨基甲酸铜的形成，MDTC 在不含金的黄铜矿表面发生吸附。在含有金粉的黄铜矿和毒砂中，形成 MDTC-Au 和 CEDETC-Au 化合物。MDTC 和 CEDETC 提高了含金硫化物相对于无金矿物的可浮性，有利于浮选生产 As 和 Fe 含量较低的 Au-Cu 精矿。