早期钨矿石的选矿一般多采用简单的重选法,继后再对重选毛精矿进行精选加工得到商品钨精矿。这种相对简便的工艺对高品位原矿来说通常还是适当的,但对低品位原矿则殊欠恰当。近期许多老矿山原矿品位逐年下降,新开矿山属低品位者居多。加之市场价格波动较大等原因,促使企业要不断采 The early tungsten ore beneficiation generally use more simple re-election method, followed by re-election on the concentrate processing of refined ore to obtain tungsten concentrate. This relatively simple process is usually appropriate for high-grade ores, but less appropriate for low-grade ores. Recently, many old mines ore grade declines year by year, the newly opened mines belong to low grade. Coupled with the market price volatility and other reasons, prompting enterprises to continue mining