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为了大力发展群众集体采金事业,冶金部黄金局对各地土法淘金工具作了比较和试验鉴定.初步认为,目前在两广和内蒙等地区使用的木溜槽具有较多的优越性.这种木溜槽的特点是:(1)处理矿砂量大,生产能力强.每台木溜槽一天可处理砂矿5～12立方米,而淘金盘只能处理几百公斤,淘金床仅1～2立方米;木溜槽比淘金盘效率高6～7倍.(2)回收率高.木溜槽淘洗砂金的回收率可达60～70%,而据一
In order to vigorously develop the mass collective mining of gold, the Metallurgical Administration of the Yellow River Council made a comparison and test on the gold mining tools of various countries and territories, tentatively believed that the wood chutes currently used in Guangdong, Guangxi and Inner Mongolia have more advantages. Chute is characterized by: (1) large amount of processing ore, strong production capacity of each wooden chute can handle 5 to 12 cubic meters a day, while the gold plate can only handle hundreds of kilograms, only 1 to 2 cubic meters of gold bed ; Wood chute 6 ~ 7 times higher efficiency than gold pan. (2) high recovery rate. The recovery rate of wood chute gold washing up to 60 ~ 70%, and according to a