混汞筒是金選廠廣泛應用的內混汞設備，用于處理砂金礦的含金重砂和脈金礦山的重選金精礦，金的回收率可達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%.

混汞筒用來從精礦、重砂和各種選礦產品中回收金。

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

重選金精礦中雖然大部分金呈游離態存在，但金粒表面常受不同程度的污染，而且部分金與其他礦物或脈石呈連生體形態存在。用混汞筒處理重選金精礦時，常在筒中加入鋼球，利用磨礦作業除去金粒表面薄膜和使金粒人連生體中解離出來。處理含表面潔凈的游離金粒的重砂精礦時，一般采用輕型混汞筒，裝球量較少。處理連生體含量高、金粒表面污染嚴重的重砂精礦時，常采用重型混汞筒，處理 1kg重砂精礦需裝入1 -2kg鋼球。混汞筒的裝精量與裝球量和物料粒度及含金量有關。

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.

重砂精礦在非堿性介質中混汞時，有時會因鐵物質的混入而生成磁性汞膏。因此，內混汞作業一般在堿性介質中進行，石灰用量為裝料量的2%-4%，水量一般為裝料量的30%-40%，也可采用通常的磨礦濃度。

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.