The oxidized ore with a lower grade of gold contains a little sulfide.

某低品位氧化型金矿石含有少量硫化物。

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Oxidized copper ore from the Tonglushan copper iron Mine, low in copper grade and abundant in mud and alkali gangue, is difficult to concentrate.

铜绿山铜铁矿氧化铜矿石品位低，泥和碱性脉石含量高，属难选氧化铜矿。

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The way tends to be operated and is of strong practicability that is valuable to explore the low -grade oxidized gold ore deposits.

方法简单，实用性强，对从事低品位氧化矿开发的矿山有一定的参考价值。

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