CN209260247U - Self-circulation electrolyte supplementing device - Google Patents

Abstract

The utility model belongs to the technical field of gold smelting, and relates to a self-circulating electrolyte replenishment device, which includes: an electrolytic cell, a smoke absorption pipe, a smoke absorption tank, a liquid replenishment tank, a liquid level sensor I, and a liquid level sensor II; One end of the electrolytic tank is connected to the flue gas absorption tank through the smoke absorption pipe, and the other end is connected to the liquid replenishment tank. The smoke gas absorption tank is connected to the liquid replenishment tank, and the liquid level sensor I and liquid Bit sensor II, thus forming a closed loop. The utility model not only reduces the operating frequency, ensures the continuity and stability of production, but also saves the consumption of hydrochloric acid and reduces the emission of hydrogen chloride tail gas.

Description

A self-circulating electrolyte replenishment device

technical field

The utility model belongs to the technical field of gold smelting and relates to a self-circulating electrolyte replenishment device.

Background technique

The principle of gold electrolysis is: under the condition of electrification, the thick gold electrode of the anode dissolves to produce Au ³⁺ , Au ³⁺ migrates in the electrolyte and precipitates on the titanium plate of the cathode, while the impurity ions do not precipitate, so as to achieve the purification of gold . Wherein the electrolytic solution comprises two kinds of solutions, namely chloroauric acid solution and hydrochloric acid solution. Since the temperature during electrolysis is 60-65°C, a large amount of hydrochloric acid in the electrolyte will volatilize, resulting in a decrease in the electrolyte, which in turn affects the normal operation of gold electrolysis. Usually, it is necessary to manually add hydrochloric acid solution several times during the gold electrolysis process.

Utility model content

The purpose of the utility model is to provide a self-circulating electrolyte replenishment device for the deficiencies of the prior art.

In order to solve the above problems, the utility model adopts the following technical solutions:

A self-circulating electrolyte replenishment device, comprising: an electrolytic cell, a flue gas absorption pipe, a flue gas absorption tank, a liquid replenishment tank, a liquid level sensor I, and a liquid level sensor II; The absorption tank is connected, and the other end is connected with the liquid replenishment tank, and the smoke absorption tank is connected with the liquid replenishment tank, and the liquid level sensor I and the liquid level sensor II are respectively installed in the electrolytic tank and the liquid replenishment tank, thereby forming a closed loop.

The connection between the electrolytic tank and the flue gas absorption tank and the flue gas absorption pipe is welded connection.

The flue gas absorbing tank is provided with a frequency conversion water pump I, which is threadedly connected with the flue gas absorbing tank, and is threadedly connected with the liquid replenishing tank through a water pipe I.

The liquid replenishment tank is provided with a frequency conversion water pump II, which is threadedly connected with the liquid replenishment tank, and is connected with the electrolytic cell through a water pipe II thread.

A rubber stopper for sealing is arranged on the top of the replenishment tank.

The liquid level sensor I is located below the electrolytic cell near the bottom of the cell, and is threadedly connected with the electrolytic cell.

The liquid level sensor II is located below the liquid replenishment tank near the bottom of the tank, and is threadedly connected with the liquid replenishment tank.

The present invention has the following beneficial effects:

1. Solve the problem of manual replenishment when the electrolyte is insufficient in the traditional gold electrolysis process. By automatically replenishing the electrolyte, the operating frequency is reduced, the continuity and stability of production are ensured, and the production efficiency is improved.

2. Realize the self-circulation of the hydrochloric acid solution of the electrolyte in the electrolytic tank, liquid replenishment tank and flue gas absorption tank during the gold electrolysis process, saving the amount of hydrochloric acid and reducing the emission of hydrogen chloride tail gas, which has certain environmental protection benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of a self-circulating electrolyte replenishment device of the present invention.

Among them, 1--electrolytic tank, 2--liquid level sensor Ⅰ, 3--flue gas absorption pipe, 4--flue gas absorption tank, 5--frequency conversion water pump Ⅰ, 6--water pipe Ⅰ, 7--rehydration tank , 8--liquid level sensor Ⅱ, 9--rubber plug, 10--frequency conversion water pump Ⅱ, 11--water pipe Ⅱ.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, a self-circulating electrolyte replenishment device includes: electrolytic tank 1 (volume 13L), liquid level sensor I2, smoke absorption pipe 3, smoke absorption tank 4 (volume 20L), frequency conversion water pump I5, Water pipe Ⅰ6, liquid replenishment tank 7 (capacity 10L), liquid level sensor Ⅱ8, rubber stopper 9, frequency conversion water pump Ⅱ10, water pipe Ⅱ11.

The liquid level sensor I2 is located at the lower left side of the electrolytic cell 1 near the bottom of the cell, and the liquid level sensor I2 is screwed to the electrolytic cell 1 . The flue gas absorption pipe 3 and the flue gas absorption tank 4 are located on the right side of the electrolytic cell 1, and the flue gas absorption pipe 3 is welded to the electrolytic cell 1 and the flue gas absorption cell 4. The liquid replenishment tank 7 is located on the left side of the electrolytic tank 1, the liquid level sensor II8 is located on the left side of the liquid replenishment tank 7 and close to the bottom of the tank, the liquid level sensor II8 is screwed to the liquid replenishment tank 7, and the rubber stopper 9 is located on the left side of the top of the liquid replenishment tank 7. The frequency conversion water pump I5 is located at the left center of the flue gas absorption tank 4, and the frequency conversion water pump I5 is threadedly connected with the flue gas absorption tank 4, and the water pipe I6 is located at the left center of the frequency conversion water pump I5, and the water pipe I6 is threaded with the frequency conversion water pump I5 and the liquid replenishment tank 7. The frequency conversion water pump II10 is located at the top center of the liquid replenishment tank 7, and the frequency conversion water pump II10 is threadedly connected with the liquid replenishment tank 7, and the water pipe II11 is located at the center of the top of the frequency conversion water pump II10, and the water pipe II11 is threaded with the liquid replenishment tank 7 and the electrolytic tank 1.

Before the start of gold electrolysis, pull out the rubber stopper 9 in advance, add a certain amount of hydrochloric acid solution (9L) to the liquid replenishment tank 7, which is higher than the liquid level warning upper limit (8L) of the liquid replenishment tank 7, and then put the rubber stopper 9 back to its original state. position, so that the liquid replenishment tank is in a sealed state. During the gold electrolysis process, when the liquid level of the electrolyte in the electrolytic cell 1 changes, the liquid level sensor I2 can accurately capture the change of the liquid level. When the electrolyte liquid level reaches the lower limit (9L) of the normal working level of the electrolytic tank 1, the liquid level sensor Ⅰ2 automatically supplies power to the frequency conversion water pump Ⅱ10, and the frequency conversion water pump Ⅱ10 starts to run and sends the hydrochloric acid solution (3L) in the replenishment tank 7 through the water pipe II11 is sent to the electrolytic cell 1. When the liquid level returns to the upper limit (12L) of the normal working level of the electrolytic tank 1, the liquid level sensor I2 automatically powers off the frequency conversion water pump II10, ensuring that the gold electrolysis is always carried out at the normal working liquid level (9-12L).

At the same time, during the gold electrolysis process, since the electrolysis temperature is maintained at 60-65°C, a large amount of hydrochloric acid solution in the electrolyte will volatilize, and the rate has been tested to be about 1L/h. This part of hydrogen chloride gas and water vapor enters the flue gas absorption tank 4 through the flue gas absorption pipe 3 . Contain a certain amount of water (4L) in advance in the flue gas absorbing tank 4, hydrogen chloride gas is very easily soluble in water and becomes hydrochloric acid again, and water vapor also condenses into water droplet in the flue gas absorbing tank 4. As the gold electrolysis time goes on, the hydrochloric acid solution volatilized in the electrolytic cell 1 is basically collected into the flue gas absorption tank 4, so that the volume of the hydrochloric acid solution in the flue gas absorption tank 4 increases. When the liquid level of the replenishment tank 7 changes, the liquid level sensor II8 can accurately capture the change of the liquid level. When the liquid level in the replenishment tank 7 reaches the lower warning limit (2L), the liquid level sensor II8 automatically supplies power to the frequency conversion water pump I5, and the frequency conversion water pump I5 starts to run and transports the hydrochloric acid solution (6L) in the flue gas absorption tank 4 through the water pipe I6 to In the replenishment tank 7. When the liquid level in the replenishment tank 7 returns to the upper warning limit (8L), the liquid level sensor II 8 automatically powers off the variable frequency water pump I5, ensuring that the hydrochloric acid reserve in the replenishment tank 7 is within a reasonable range (2-8L). It further ensures that gold electrolysis can be carried out at a normal liquid level at all times. In addition, the initial hydrochloric acid solutions in electrolytic tank 1 and liquid replenishment tank 7 are both 8 mol/L (the volume ratio of concentrated hydrochloric acid to water is 2:1). When the gold electrolysis system reaches dynamic equilibrium, the theoretical hydrochloric acid concentration in the electrolytic cell 1, liquid replenishment tank 7, and flue gas absorption tank 4 is all above 6mol/L, which meets the requirements for the chloride ion concentration and acidity of the electrolyte during the gold electrolysis process. Require.

The utility model realizes the internal self-circulation of the hydrochloric acid solution of the electrolyte, reduces the consumption of hydrochloric acid, and greatly reduces the emission of hydrogen chloride tail gas, achieving the result of killing two birds with one stone.

Claims (7)

1. A self-circulating electrolyte replenishment device, characterized in that it comprises: an electrolytic cell, a flue gas absorption pipe, a flue gas absorption tank, a liquid replenishment tank, a liquid level sensor I, and a liquid level sensor II; one end of the electrolytic cell passes through the The gas absorption pipe is connected to the flue gas absorption tank, and the other end is connected to the liquid replenishment tank. Form a closed loop. 2. The self-circulating electrolyte replenishment device according to claim 1, characterized in that, the connection between the electrolytic cell and the smoke absorption tank and the smoke absorption pipe is welded connection. 3. The self-circulating electrolyte replenishment device as claimed in claim 1, characterized in that, the flue gas absorption tank is provided with a frequency conversion water pump I, which is connected to the flue gas absorption tank by threads, and is connected to the liquid replenishing tank through a water pipe. I threaded connection. 4. The self-circulating electrolyte replenishment device according to claim 1, characterized in that the liquid replenishment tank is provided with a frequency conversion water pump II, which is threadedly connected to the liquid replenishment tank, and is connected to the electrolytic tank through a water pipe II thread. 5. The self-circulating electrolyte replenishment device according to claim 1, characterized in that a rubber stopper for sealing is arranged on the top of the replenishment tank. 6. The self-circulating electrolyte replenishment device according to claim 1, characterized in that, the liquid level sensor I is located below the electrolytic tank near the bottom of the tank, and is screwed to the electrolytic tank. 7 . The self-circulating electrolyte replenishment device according to claim 1 , wherein the liquid level sensor II is located below the replenishment tank and close to the bottom of the tank, and is threadedly connected to the replenishment tank. 8 .