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一、加拿大加拿大1962年产金4156000两占世界各国产金量的第三位。据十多年来的平均数字,加拿大金的来源有三个方面;(1)脉金生产占85%;(2)砂金生产占1.7%;(3)有色金属冶炼副产回收占13.3％。脉金矿处理品位一般在6—9(克/吨),个別高的达24(克/吨)(大黄刀金矿),最低的是3—4(克/吨)。多数脉金矿系含金硫化鉄矿,組成較复杂,生产流程多数选厂采用浮选-氰化,少数采用重选——混汞——氰化或单一氰化。組成复杂的砷、銻硫化铁及碲硫金矿則采用浮选——沸騰焙烧——氰化等流程。計算至金泥的最高回收率达98.9%(原矿品位12.4克/吨),最低的处理复杂矿的回收率为82—84%;一般金矿的选炼实收率为95—96%。
First, Canada and Canada In 1962 gold 4156000 two accounted for the third place in the world of gold production. According to the average of more than a decade, the source of Canadian gold has three aspects: (1) pulse gold production accounts for 85%; (2) sand gold production accounts for 1.7%; (3) non-ferrous metal smelting by-product recovery accounts for 13.3%. Veined gold processing grade is generally 6-9 (g / t), individual high up to 24 (g / t) (rhubarb knife gold), the lowest is 3-4 (g / t). The majority of vein gold-bearing gold sulphide, ore, composed of more complex, most of the production process using flotation - cyanidation, a small number of re-election - amalgam - cyanidation or a single cyanide. Complex composition of arsenic, antimony iron sulfide and tellurium sulfur gold flotation - boiling roasting - cyanidation and other processes. Calculated to the highest gold mud recovery rate of 98.9% (ore grade 12.4 g / ton), the lowest recovery complex ore recovery rate of 82-84%; general recovery of gold refining rate of 95-96%.