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对加拿大新布伦瑞克Heath Steel选矿厂的原矿、精矿和尾矿的矿物学进行了详细的研究,以便确定主要矿石矿物的解离度和回收率,并查明微量元素的赋存状态和分布规律。1977年8月间,细磨矿石的元素平均含量(重量％):Zn4.34％,Cu1.25％,Pb1.64％,Ag90克/吨。矿石中主要微量元素为Ag、Cd、In、Co、Sb、Bi、As、Hg、Sn和Au。Ag呈固溶体状态赋存于黝铜矿—砷黝铜矿、方铅矿、As—Sb的含硫酸盐、Pb—Bi—Sb的含硫酸盐中。大约有一半的Ag被回收到Pb和Cu精矿中,其余部分损失在尾矿和Zn精矿中。由于主要的含Ag矿物也含有Sb和Bi,所以,用选矿方法回收Ag时,也将同时回收对提取冶金有害的元素。Cd、Hg和大部的In呈固溶体状态存在于闪锌矿中,从而被回收到Zn精矿中。部分In也呈一种次要的未查清的含铟矿物被回收到Cu精矿中。Co和As主要赋存于毒砂、辉砷钴矿、Co—Fe硫砷化物、黄铁矿和磁黄铁矿中,结果,这些矿物都进入尾矿。因此,在回收有价元素Co时,便会同时回收污染环境的元素As。矿石被磨至-270目粒级约占80％。在这一磨矿粒度下,单体的闪锌矿占71％,黄铜矿占66％,方铅矿占59％。在Zn、Cu和Pb精矿中,单体的闪锌矿、黄铜矿和方铅矿的回收率分别为85％、76％和80％;在Zn、Cu和Pb精矿中连生体的闪锌矿、黄铜矿和方铅矿的回收率分别为48％、5％和7％。尾矿中有些连生体的闪锌矿和黄铜矿的颗粒较大,通过细磨可使其解离。
The mineralogy of the ore, concentrate and tailings at the Heath Steel beneficiation plant in New Brunswick, Canada, has been studied in detail to determine the degree of dissociation and recovery of the major ore minerals and to identify the presence of trace elements And distribution. In 1977 August, the average content of finely ground ore elements (wt%): Zn4.34%, Cu1.25%, Pb1.64%, Ag90 g / ton. The main trace elements in ore are Ag, Cd, In, Co, Sb, Bi, As, Hg, Sn and Au. Ag is present in a solid solution state in the tetrahedrite-arsenate-tetrahedrite, galena, sulphate containing As-Sb, and sulphate containing Pb-Bi-Sb. About half of Ag is recovered into Pb and Cu concentrates, with the remainder lost in tailings and Zn concentrates. Since the major Ag-containing minerals also contain Sb and Bi, the recovery of Ag by the beneficiation process will also simultaneously recover elements that are deleterious to extraction metallurgy. Cd, Hg and most of the In in the form of solid solution exists in the sphalerite, which was recovered into the Zn concentrate. Some of the In is also recovered as minor secondary indium-containing minerals into Cu concentrates. Co and As are mainly found in arsenopyrite, arsenic cobalt, Co-Fe arsenic, pyrite, and pyrrhotite. As a result, these minerals enter the tailings. Therefore, when the valuable element Co is recovered, the element As that pollutes the environment is recovered at the same time. Ore is ground to -270 mesh size accounts for about 80%. At this grinding particle size, monomeric sphalerite accounts for 71%, chalcopyrite 66%, and galena 59%. In the Zn, Cu and Pb concentrates, the recoveries of monomeric sphalerite, chalcopyrite and galena are 85%, 76% and 80%, respectively. In the Zn, Cu and Pb concentrates, The recovery rates for sphalerite, chalcopyrite and galena are 48%, 5% and 7% respectively. Some of the tandem sphalerite sphalerite and chalcopyrite particles larger, fine grinding can make it dissociate.