广西金牙难浸金矿的工艺矿物学研究

为了给含砷金矿的提金工艺流程提供理论依据,对广西金牙金矿的矿石开展了工艺矿物学研究.该矿是典型的含砷难浸复杂金矿,矿石含Au为6.28 g/t,含Ag为1.37 g/t.As的质量分数为0.58%,S的质量分数为3.10%,C的质量分数为1.76%,其中有机碳的质量分数为0.21%.金精矿含Au为52.61 g/t,含Ag为6.00 g/t.As的质量分数11.32%,S的质量分数为29.32%,C的质量分数为0.35%.矿石中的主要金属矿物为毒砂、黄铁矿,其次有方铅矿、闪锌矿和黄铜矿等.载金矿物主要有毒砂、黄铁矿;金的赋存形态为次显微金;矿石的有害组分为砷、碳质和黏土矿物.含砷矿物是以毒砂、...

Process Mineralogy of Refractory Gold Ore in Jinya, Guangxi Province

Jinya gold mine in Jinya, Guangxi Province PRC is of refractory type, in which the Au and Ag contents are 6.28 g/t and 1.37 g/t, respectively. The rest includes As 0.58wt%, S 3.10wt%, and C 1.76wt% containing TOC 0.21wt%. In the gold concentrate the Au content is 52.61 g/t, Ag 6.00 g/t, As 11.32wt%, S 29.32wt%, and C 0.35wt%. It was found that the main metallic minerals in Jinya gold ore are pyrite and arsenopyrite and the rest includes galena, sphalerite and chalcopyrite, etc. The main gold-bearing minerals are pyrite and arsenopyrite, and the occurrence form of gold in the ore is sub-micro grain gold, The main arsenic-bearing minerals are pyrite, realgar and orpiment. The objectionable constituents are arsenic, carbon-containing material and clay minerals. The characteristics of the gold ore are finegrain granular texture and minuteness dip-dye structure.