科明科公司特累尔厂的现代化方案,要求将目前的锌生产能力扩大到272,000吨/年。初步研究指出,增加一个锌加压浸出工序是实现这个目标最灵活而又经济的方法。1977年夏秋之间,科明科公司和合利特·高尔登矿业公司在艾尔伯塔萨斯喀彻温堡联合经营一个3吨/日规模的中间工厂,以验证沙利文锌精矿的加压浸出和随后将熔融元素硫与浸出矿浆的分离。 The modernization of the Commenco Terex plant required the current zinc production capacity to be expanded to 272,000 tons / year. Preliminary research indicates that the addition of a zinc pressure leach process is the most flexible and economical way to achieve this goal. Between the summer of 1977 and fall, Commington and Holliday Goldenstein co-operate a 3 tonne / day intermediate plant in Saskatchewan, Alberta to validate the addition of Sullivan zinc concentrate Pressure leaching and subsequent separation of molten elemental sulfur from leached pulp.