采用较简单的工艺流程对都龙难选锌矿物进行浮锌试验，取得较好的技术指标。
By the float zinc experiment of refractory zinc minerals in Dulong, using more simple technological process, proper technical performances were obtained.
采用较简单的工艺流程对都龙难选锌矿物进行浮锌试验，取得较好的技术指标。
By the float zinc experiment of refractory zinc minerals in Dulong, using more simple technological process, proper technical performances were obtained.
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