混汞筒是金选厂广泛应用的内混汞设备，用于处理砂金矿的含金重砂和脉金矿山的重选金精矿，金的回收率可达98%以上。

Amalgamation cylinder, as a type of internal  amalgamating equipment that is widely used in gold processing plant, is used to  process heavy sand containing gold of gravel mine and gold concentrate of vein  gold mine, presenting a gold recovery rate of higher than 98%.

混汞筒用来从精矿、重砂和各种选矿产品中回收金。

Amalgamation cylinder is used to recover the  gold from ore concentrate, heavy sand and various ores.

重选金精矿中虽然大部分金呈游离态存在，但金粒表面常受不同程度的污染，而且部分金与其他矿物或脉石呈连生体形态存在。用混汞筒处理重选金精矿时，常在筒中加入钢球，利用磨矿作业除去金粒表面薄膜和使金粒人连生体中解离出来。处理含表面洁净的游离金粒的重砂精矿时，一般采用轻型混汞筒，装球量较少。处理连生体含量高、金粒表面污染严重的重砂精矿时，常采用重型混汞筒，处理 1kg重砂精矿需装入1 -2kg钢球。混汞筒的装精量与装球量和物料粒度及含金量有关。

Although most of the gold in gold concentrate is  in free form, the surfaces of gold grains are usually polluted to a greater or  less extent, and some gold exists with other minerals or vein rocks in adherent  form. . When gold concentrate is processed with  amalgamation cylinder, steel balls are usually added to the cylinder for  grinding operation to remove the film on gold grain surfaces and separate the  gold grains from adherent bodies. . When the heavy sand  ore concentrate of free gold grains with clear surfaces is treated, we usually  use light-duty amalgamation cylinder with extremely small quantity of steel  balls. . When processing the heavy sand ore concentrate  with high adherent body content and serious gold grain surface contamination,  we usually use heavy duty amalgamation cylinder, for which 1-2 kg of steel balls need to be loaded for 1kg of heavy sand ore concentrate. . The loading quantity of concentrate and steel  balls of amalgamation cylinder is related to material grain size and gold  content.

重砂精矿在非碱性介质中混汞时，有时会因铁物质的混入而生成磁性汞膏。因此，内混汞作业一般在碱性介质中进行，石灰用量为装料量的2%-4%，水量一般为装料量的30%-40%，也可采用通常的磨矿浓度。

During non-alkaline medium amalgamation, heavy  sand ore concentrate may produce magnetic mercury amalgam due to the  interfusion of Fe substances. . Hence, internal  amalgamation is usually operated in alkaline mediums. The quantity of lime is  2%-4% of loading capacity, and water quantity is usually 30%-40% of loading  capacity; alternatively, the usual grinding concentration can also be used.