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Study on synthetical recovery of tailing from the cleaning mill of placer gold at Yang-Ping-Guan

阳平关砂金矿精选厂尾矿综合回收的研究

Gold ores mined in ancient times were divided into placer gold and hill gold .

古代采金分砂金和山金。

Destributions of placer gold in the littoral area in the east of the Laizhou Bay

莱州湾东部滨海水域砂金分布特征

The placer deposits are mainly formed in sandy coasts , bar lagoons and deltas .

不同的地貌类型形成的砂矿床有所区别，一般砂矿床主要产于砂质海岸、沙坝&泻湖海岸、三角洲海岸内。生物海岸、泥质海岸不成矿。

Research on separation technology of monazite and zircon from ilmenite in the beach placer ilmenite

海滨砂矿选钛尾矿中独居石和锆石与钛铁矿的分离研究