论文部分内容阅读
黄铁矿和浮选硫精矿有含金与不含金之分.含金黄铁矿经过沸腾焙烧脱硫后剩下的渣通常称为黄铁矿烧渣.日本等国利用黄铁矿烧渣炼铁、制水泥、提取有色金属,制造还原铁粉以及作有色金属冶炼熔剂等,其中用来炼铁的比例最大.对有色金属含量较高的烧渣,日本用高温氯化法处理,美国、加拿大等国则把焙烧作为从含金黄铁矿中提金前的准备作业.我国的烧渣也含有一定数量的有色金属及贵金属,特别是含金烧渣目前大都未被利用,许多硫酸厂都堆存有含金烧渣.
Pyrite and flotation sulfur concentrate with gold and gold-free points. Golden pyrite after boiling roasting desulfurization residue is usually called pyrite slag. Japan and other countries using pyrite cinder Ironmaking, cement making, extraction of non-ferrous metals, manufacture of reduced iron and non-ferrous metal smelting flux, etc., of which the largest proportion of iron used for the high content of non-ferrous metals, Japan, high temperature chlorination treatment, the United States , Canada and other countries put the roasting as gold from gold pyrite in the preparatory work before the extraction of gold. China’s cinder also contains a certain amount of non-ferrous metals and precious metals, especially gold-containing slag is currently not being utilized, many sulfuric acid plant There are piles of gold cinders.