芬兰奥托康浦公司所属柯克拉厂从含铜锌的黄铁用优先浮选的方法,选出铜和锌的合格商品精矿后,余下的尾矿——黄铁矿供制取元素硫、二氧化硫和铁矿砂用。它的原矿平均成分为(％):铜0.9％,铁35％,锌3.5％,硫38％。经过选矿后,尾矿(黄铁矿)的平均成分为(％):硫52％,铁46％,铅0.05％,锌0.05％,砷0.06％,二氧化硅1.5％。采用的新的处理流程和方法如下: 干燥的精细颗粒状的黄铁矿用燃烧气体加热至一 Finland’s Okhotsk company Kirkla plant from the copper-zinc-containing yellow iron preferential flotation method, selected copper and zinc qualified commodity concentrate, the remaining tailings - pyrite for the preparation of elemental sulfur , Sulfur dioxide and iron ore use. Its average ore composition is (%): 0.9% copper, 35% iron, 3.5% zinc and 38% sulfur. After beneficiation, the average composition of tailings (pyrite) is 52% for sulfur, 46% for iron, 0.05% for lead, 0.05% for zinc, 0.06% for arsenic and 1.5% for silica. The new treatment procedure and method used are as follows: The dry, finely grained pyrite is heated with a combustion gas to