Electrolysis silver extracting machine

Abstract

The invention discloses an electrolysis silver extracting machine. The electrolysis silver extracting machine comprises a machine case. The machine case is provided with a silver extraction unit. The silver extraction unit is mainly and jointly composed of a silver extraction unit body, a cathode tube, an anode bar, a sealing cover, a water outlet and a water inlet. The silver extraction unit body is arranged on the upper surface of the machine case, and the other end of the silver extraction unit body is inserted in the machine case. The cathode tube is arranged in the silver extraction unit body. The anode bar is inserted in the cathode tube and is in conductive connection with the cathode tube. The sealing cover is arranged at the position of an opening in the upper end of the silver extraction unit body. The water outlet and the water inlet are formed in the side surface of the machine case and communicate with the interior of the cathode tube. A power source control panel is arranged on the outer side surface of the machine case and electrically connected with the silver extraction unit. The electrolysis silver extracting machine has the beneficial effects that silver losses are effectively reduced, the production cost is reduced, the capital turnover is accelerated, economic benefits of enterprises are increased, and adsorption, desorption and electrolysis functions are integrated; and the device and technology are directly used in silver containing mine, and the purpose that the electrolytic silver metal pure silver can be directly produced in the mine is achieved.

Description

technical field [0001] The invention relates to the improvement of a device for directly electrolytically extracting silver from silver ore leachate, in particular to an electrolytic silver extractor. Background technique [0002] Since the low-grade silver ore heap leaching technology came out in the United States in the early 1970s, it has become one of the main means of silver production in the world. Since the 1980s, my country began to study and gradually popularized and applied it. The scale of heap leaching has grown from 1,000 tons to 100,000 tons. The development and application of heap leaching technology has played a huge role in promoting the development and utilization of low-grade silver ore resources in my country. However, until now, in the production of silver heap leaching, two sets of independent devices are mainly used to absorb activated carbon in the adsorption tower and to desorb the silver-loaded carbon in the desorption tower. The silver-containing ...

AI Technical Summary

Problems solved by technology

According to the adsorption principle of activated carbon, it is known that the carbon surface (especially at the edges and corners) has the largest adsorption amount of silver, and when squeezed and rubbed, the carbon surface and edges and corners are most likely to be pulverized, which not only reduces the adsorption of activated carbon Activity and service life, and in the desorption process, these secondary carbon powders have flowed into the electrolytic cell with the solution before they are well desorbed, which not only causes unnecessary loss of silver, but also pollutes the electrolyte and affects the electrolysis effect. Electrolysis will stop due to short circuit of electrodes caused by too much carbon powder

[0004] In order to eliminate the influence of carbon powder and recycle carbon powder to reduce the loss of silver, some mines have added a screening and cleaning process before desorption. Most of the cleaned carbon powder can be recovered after sedimentation and filtration, but there are still some fine floating carbon. It is difficult to fully recover the powder, and at the same time, the production cost is increased due to the addition of a process

[0005] (2) Because the silver-loaded carbon is transported to the desorption workshop and can be returned to use after desorption, while the heap leaching and adsorption in the mine is carried out continuously, which forces the mine to prepare a large amount of activated carbon for turnover

In some mines, because there is no desorption workshop, the silver-loaded carbon must be entrusted with external processing for desorption, and the return time of the carbon will be longer. Even in that year, there was no silver-removed carbon that could be returned to use. A heap leaching mine with an annual processing capacity of 10,000 tons of ore is generally It is necessary to prepare 5 tons of activated carbon, and there is a backlog of production capital, which seriously increases the input of production capital.

[0006] (3) Since the silver-loaded carbon cannot be desorbed in time, the silver produced in the mine cannot be converted into cash in time, so that the capital and silver turnover during the production period is slow

For those mines that entrust external processing and desorption, the silver produced in the year is often turned into cash silver at the end of the production, which leads to the fact that all the capital needed during the production period depends on the mines to raise cash to maintain production and liquidity. Very low silver turnover

[0007] (4) The discharge of poor electrolytic solution is always a difficult problem for desorption electrolysis plants

[0008] (5) Entrusting external processing and desorption will cause another damage and pulverization loss when the silver-loaded carbon is mixed and sampled, and often there are differences and disputes in the determination of the grade and moisture of the silver-loaded carbon. A headache that takes time, energy, and money

At the same time, the processing cost is not a small amount for the entrusting party, generally accounting for 15-20% of the direct production cost

[0009] (6) The current desorption electrolysis process is carried out under normal pressure, so it can only be used in mines in low altitude areas

Although my country has already developed high-pressure desorption equipment, it is difficult for ordinary heap leaching mines to bear due to the high price.

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