一、绪言采用奥克拉法(Orkla Process)从含铜黄铁矿中提取元素硫并回收铜的工艺,在国外已经有很成熟的生产经验。这个方法的主要优点是:能够廉价地生产出元素硫(而不是二氧化硫),同时回收铜(呈冰铜状态,然后进一步处理成金属铜)。它的主要缺点是:使矿石中含有的大量铁变成橄榄石(2FeO·SiO_2)形态的炉渣,要想再从这种炉渣中回收铁就 I. INTRODUCTION The process of extracting elemental sulfur from copper-bearing pyrite and recovering copper by the Orkla Process has a very mature production experience abroad. The main advantage of this method is that elemental sulfur (instead of sulfur dioxide) can be produced cheaply while copper is recovered (in the form of matte copper and then further processed into metallic copper). Its main disadvantage is that the large amount of iron contained in the ore becomes slag of the form of olivine (2FeO · SiO 2), and in order to recover the iron from such slag