Novel method for separating gold and silver from gold mud
A new method, gold mud technology, applied in the field of gold and silver separation, can solve the problem of excessive metal loss, achieve the effect of reducing process steps, easy control of reaction, and improving gold and silver recovery rate
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[0014] Example 1: The new method for separating gold and silver from gold mud as described in the present invention includes the following steps: the wet gold mud produced by the cyanidation method, filter paper, and filter cloth are ashed and then water-moistened gold mud is sent into the reaction kettle, and hydrochloric acid and hydrochloric acid are added. The weight ratio of sodium chlorate, wet gold mud, hydrochloric acid and sodium chlorate is 1:1.2:0.25, using steam indirect heating, keeping the temperature in the reactor at 84℃, leaching for 4 hours, gold and impurity elements zinc, lead, copper, After the iron is dissolved, it enters the solution and the silver forms a silver chloride precipitate. After vacuum filtration, the filtrate is a gold-containing solution, and the filter cake is a silver chloride precipitate; the filter cake precipitated by the silver chloride is sent to the displacement reactor to dilute HCl As the medium, it is replaced with iron powder. After...
Example Embodiment
[0015] Example 2: The new method for separating gold and silver from gold mud as described in the present invention includes the following steps: the wet gold mud produced by the carbon slurry method, filter paper and filter cloth are ashed and then water-moistened gold mud is sent into the reaction kettle, and hydrochloric acid and The weight ratio of sodium chlorate, wet gold mud, hydrochloric acid and sodium chlorate is 1:1:0.1, using electric heating method, keeping the temperature in the reactor at 79℃, leaching for 5 hours, gold and impurity elements zinc, lead, copper, After the iron is dissolved, it enters the solution and the silver forms a silver chloride precipitate. After vacuum filtration, the filtrate is a gold-containing solution, and the filter cake is a silver chloride precipitate; the filter cake precipitated by the silver chloride is sent to the displacement reactor to dilute HCl As the medium, it is replaced by iron powder. After the silver powder is washed and...
Example Embodiment
[0016] Example 3: The new method for separating gold and silver from gold mud as described in the present invention includes the following steps: the wet gold mud produced by the cyanidation method, filter paper, and filter cloth are ashed and then water-moistened gold mud is sent into the reaction kettle, and hydrochloric acid and hydrochloric acid are added. The weight ratio of sodium chlorate, wet gold mud, hydrochloric acid and sodium chlorate is 1:1.5:0.4, using steam indirect heating, keeping the temperature in the reactor at 89℃, leaching for 3 hours, gold and impurity elements zinc, lead, copper, After the iron is dissolved, it enters the solution and the silver forms a silver chloride precipitate. After vacuum filtration, the filtrate is a gold-containing solution, and the filter cake is a silver chloride precipitate; the filter cake precipitated by the silver chloride is sent to the displacement reactor to dilute HCl As the medium, it is replaced with iron powder. After ...
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