某钨铜矿选矿废水处理与分质回用工艺研究

Treatment and Separated Recycling of Wastewater from Mineral Processing Plant of Tungsten⁃Copper Mine

对某钨铜矿选矿废水进行了“分支处理-分质回用”工艺研究。铜尾矿沉降水、铜精矿过滤水回用于铜浮选,钨精矿过滤水回用于钨精选段浮选,均满足选矿工艺用水要求;钨尾矿水经石灰絮凝、芬顿氧化工艺深度处理后可回用于磨矿及钨浮选;各股选矿废水分质回用至分系统分选工段,闭路试验可获得与清水相当的技术指标。

A technique featuring separated treatment and recycling was introduced to process a mineral processing wastewater from a tungsten⁃copper ore concentrator.The wastewater from copper tailings precipitation and copper concentrate filtration is recycled for copper flotation,while the water from tungsten concentrate filtration is returned to the cleaning stage in tungsten flotation.They all can meet the water quality requirement in beneficiation.Tungsten tailings water can be reused in grinding and tungsten flotation after intensified treatment by lime flocculation and Fenton oxidation processes.In a close⁃circuit test,each type of wastewater from different beneficiation processes was separately returned to the corresponding stages based on its quality,and the obtained technical indicators were equivalent to those from the tests with fresh water.