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为更好地理解硫化矿物对空气饱和及富氧溶液中金和银溶解动力学的影响,用金和银的旋转盘法进行了广泛的研究.特别着重于金的共生矿物对空气饱和和富氧的氰化物溶液中金和银溶解的影响.研究结果表明,在各种硫化矿物存在时,金和银的浸出行为与溶液中硫化物的溶解性和氧的浓度密切相关.因为硫化物的分解程度随氧的浓度而变化,氰化期间金和银的溶解速度提高或降低取决于被溶解成分的类型和数量.所以,在富氧的氰化物溶液中,某些硫化矿物(诸如镍黄铁矿、黄铜矿、磁黄铁矿、闪锌矿、辉钼矿、砷黄铁矿和黄铁矿)的存在提高了金的溶解速度;而在同样条件下,其它矿物(如方铅矿、辉锑矿和辉铜矿)的存在,则产生相反的作用.采用富氧的氰化物溶液浸出时,银的溶解也得到了显著的改善,但是,有硫化矿物共生时,银的溶解速度还是比没有硫化矿物时低得多.
In order to better understand the effect of sulphide minerals on the dissolution kinetics of gold and silver in air-saturated and oxygen-rich solutions, extensive studies have been conducted using the spin-disc method of gold and silver, with a particular emphasis on the effect of the gold symbiotic minerals on air saturation and enrichment Oxygen Cyanide Solution Gold and Silver Dissolution The results show that the leaching behavior of gold and silver is closely related to the solubility of sulfide and the concentration of oxygen in the presence of various sulfide minerals.Sulfides The degree of decomposition varies with the concentration of oxygen and the rate of dissolution of gold and silver during cyanidation increases or decreases depending on the type and amount of components being dissolved.Thus, in oxygen-rich cyanide solutions, certain sulfide minerals, such as nickel yellow Iron ore, chalcopyrite, pyrrhotite, sphalerite, molybdenite, arsenopyrite and pyrite increase the rate of dissolution of gold; while under the same conditions other minerals such as lead Ore, stibnite, and chalcocite), the opposite effect is produced, and the dissolution of silver is also significantly improved when leached with an oxygen-rich cyanide solution, however, with symbiosis of sulphide minerals, dissolution of silver Speed is still lower than when there is no sulfide minerals many.