云南某铂钯矿酸浸除镁及浸出液综合利用研究

云南某地铂钯矿是迄今已探明的中国最大的铂族金属矿床。但由于其矿石的工艺矿物学性质非常复杂而仍未能进行有效开发利用。本研究提出了全新的有效处理该矿石的方案 ,即用稀硫酸浸出原矿大大降低其 Mg O含量 ,浸渣用简单流程少量药剂浮选就可获得极低 Mg O含量(<3% )的优质铂、钯精矿。溶解进入浸出液中的 Fe、Mg可综合回收制备铁红及达国标 (GB90 0 4 -88)优等级轻质氧化镁等产品。浮选尾矿还可制备多孔硅等产品 ,整个工艺不排放固体废弃物和废气。因此 ,可望利用该工艺将云南某地铂钯矿建成绿色矿冶工程并实现整个资源的综合利用。整个工艺经济效益大大优于传统工艺

Elimination of Magnesium Oxide in the Platinum-Palladium Ore by Acid Leach and Comprehensive Utilization of the Leach Liquor

The platinum palladium mine at somewhere in Yunnan province is so far China′s revealed the largest independent platinum group metals ore deposit.But there is still no effective method for exploitation because the process characteristics of the ore are very complicated.Only by flotation,the content of magnesium oxide in the concentrate could not be reduced below 20% so the concentrate could not be smelted economically.This study found a new effective method treating the ore that MgO in the ore may be eliminated greatly by leaching with dilute sulfuric acid.The final platinum palladium concentrate with very low content of MgO(<3%)could be obtained from the leach residue by flotation using simple flowsheet and small amount of flotation reagent.The ions of magnesium and iron dissolved in the leach liquor may be comprehensively utilized to produce iron oxide red and high class light magnesium oxide examined by the national standard(GB9004-88).The flotation tailing can be used to produce hollowness silica product etc. so that all minerals in the ore could be utilized.There are not waste solid as well as waste gas must be discharged in whole technological process so that the industry for exploitation of the ore would be built as green mining & metallurgy engineering project.This process′s economic benefits would be much better than traditional process′s.