High-temperature cyanogen-free gold loaded carbon desorption system and control method thereof

Abstract

The invention relates to a high-temperature cyanogen-free l gold loaded carbon desorption system and a control method thereof. The high-temperature cyanogen-free gold loaded carbon desorption system comprises a desorption column, an electric heater, an electrolytic tank, a circulating pump, a desorption liquid tank, an air compressor, a connecting pipeline for connecting the parts, a control valve, and the like. The control method is characterized by comprising the following steps of: (1) arranging a solution circulating passage: one end is connected with a pipeline between a filter and an electrolytic liquid inlet valve, and the other end is connected with the desorption liquid tank; and (2) arranging an electrolytic tank high-pressure discharged-liquid supply passage: one end is connected with a pipeline between the electric heater and a liquid check valve, and the other end is connected with a pipeline between an in-front-pump valve and an electrolytic liquid outlet valve. Aiming at the improvement, the invention also designs a whole set of system control methods. Compared with the prior art, the invention has the advantages that the high-temperature solution is ensured not to boil, no gold particle floatation phenomenon exists, and a gold product is ensured not to lose because the electrolytic tank with the loaded carbon does not relieve pressure. Moreover, heat energy can be fully utilized.

Description

technical field [0001] The invention relates to the technical field of gold beneficiation, in particular to a high-temperature cyanide-free gold-loaded carbon desorption system and a control method. Background technique [0002] The existing gold-loaded carbon desorption process technology, because the process control design is the idea of ​​pressure relief operation, leads to process hardware configuration defects (such as figure 1 shown). Since there is no solution pre-circulation channel, the continuous desorption operation after desorption of each column must first remove the air pressure of the entire system before it can be replaced to the next round of desorption process, and the pressure is fully relieved at high temperature, resulting in liquid Boiling causes the electrolytic gold in the electrolytic cell to vibrate and float seriously. When the next round of desorption process is restarted (the time interval for changing a round of desorption is about 40 minutes),...

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Problems solved by technology

[0008] Aiming at the problems existing in the existing high-temperature cyanide-free gold-loaded carbon desorption process control process, after research, the present invention designs a new high-temperature cyanide-free gold-loaded carbon desorption process control process. The new process solves the problem of safety of gold products in the desorption process. problems, and is simple and easy to promote and use

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