某斑岩型金矿工艺矿物学及可回收性评价

某斑岩型微细粒金矿石含金品位不足1g/t，属大型矿床。金矿物主要以含银自然金和银金矿为主。为充分查明该矿石特性质和确定适宜的选矿工艺流程，本文分别对块状矿石和磨矿后的浮选给矿，分别采取多种检测手段进行了详细的工艺矿石学研究，并推算-0.074mm占60%的浮选给矿中，以黄铁矿为主的金属硫化物理论可浮选回收87.58%-92.23%。推算其金重选理论回收率≤50.57%，金浸出理论回收率81.75%，金浮选理论回收率93.78%。

Process Mineralogy and Recyclability Evaluation of a Porphyry Gold Deposit

A porphyry type fine grained gold ore contains less than 1 g/t gold, which belongs to a large deposit. The main gold minerals are silver-bearing natural gold and silver-gold ore. In order to fully find out the special properties of the ore and determine the appropriate beneficiation process flow, this paper adopts a variety of detection methods to carry out detailed process study on the bulk ore and the flotation feed after grinding respectively, and it is calculated that -0.074 mm is 60% of the flotation feed. Theoretically, 87.58% to 92.23% of metal sulfides, mainly pyrite, which can be recovered by flotation. The theoretical recovery rate of gold gravity separation is less than 50.57%, the theoretical recovery of gold leaching and gold flotation is 81.75% and 93.78% respectively.