针对德昌南山长石矿的基本性质 ,研究了不同加工方法对其分选除铁效果的影响。在此基础上重点选择了干湿联合分选、全湿法分选和破碎产品直接全干法分选三个分选除铁工艺方案 ,通过进一步的试验验证 ,获得了各粒级作业产率均超过 85 % ,总产率为 6 5 %左右 ,w(Fe2 O3) <0 3 %的分选指标 ,达到了预期目标。 Aiming at the basic properties of longchang ore from Nanshan in Dachang, the effects of different processing methods on its selective iron removal were studied. On the basis of this, we focus on the three dry-process separation processes of wet-dry separation, wet separation and crushing products. Through further experimental verification, All of them were more than 85%, the total yield was about 65%, and the sorting index of w (Fe2O3) <0 3% reached the expected target.