Details of the new silver electrolyzer

Advantages of the new automatic silver powder silver electrolyzer:
I. Basic status of domestic silver electrolytic equipment: At present, most of the electrolytic cells used in the larger silver electrolytic refining industry are crawler-type horizontal electrolytic cells with automatic silver powder discharge, also known as ship-type cells. Almost all of the silver refineries in China, from the early Shenyang smelter to the current large copper and lead smelters such as Yuguang Gold & Lead (with an annual output of about 1,000 tons of silver), use this type of belt discharge tank. The advantages of this tank type are high degree of automation, continuous automatic silver powder discharge without stopping the tank, low labor intensity, and suitable for large-scale production. The disadvantages are: the current density of this tank is relatively low (generally 250-350A/m2), the electrolysis speed is relatively low, and there are more electrolyte pressures in the equipment. The amount of capital accounted for is large and the turnover is slow. The traditional tracked silver electrolyzer needs to clean up the bottom of the tank after a period of production, and the silver powder accumulates under the track, which causes abnormal powder output.
Second, the actual use effect.
A domestic company adopts our silver electrolyzer and uses high current density for silver electrolysis production. Through this trial run, the following advantages are summarized: environmental protection, labor saving, time saving, energy saving, and stability of technical parameters. Specific performance in the following aspects.
a. Improve the working environment on site.
The silver electrolysis equipment adopts chiller to cool down the electrolyte. The temperature of the chiller is set to 40℃ when the electrolyte is running, and the chiller will start automatically to cool down the electrolyte when the electrolyte temperature reaches 40℃, and the chiller will stop running automatically when the temperature drops below 40℃. The electrolyte is not easy to volatilize under reasonable temperature, and the site does not smell acid gas, so the site working environment is obviously improved compared with the old workshop.
b. Fast electrolysis speed and significantly higher output.
Fast electrolysis speed, conventional silver electrolysis current density 300/㎡ (silver electrolysis current density 750A/m²). The current density is 2-3 times of the current conventional silver electrolysis tank. Much higher production capacity for the same size of equipment. Smaller production floor area required for the same production capacity. Effectively increase the capacity of the equipment (2-3 times more), according to the current operating current 1500A the actual output is 55Kg per hour, reaching the design capacity of 1000Kg/day, which greatly reduces the occupation and loss of silver in the production process, and substantially reduces the working capital and financial cost of the enterprise.
c. Convenient operation for workers, saving time and effort.
(1) Adopting mechanized conveyor belt to discharge silver powder, the silver powder precipitated on the cathode is scraped down to the mechanical conveyor belt at the bottom of the tank and transported out of the electrolytic tank through the slope structure in the front section of the tank, and directly dropped into the car transporting silver powder to be sent to washing and ingot casting. Reduce the labor intensity of workers.
(2) Adopting automatic stirring device, the silver powder output on the cathode plate is automatically scraped off without manual scraping off, avoiding the short circuit phenomenon between cathode and anode, which not only improves the reliability of electrolytic tank operation, but also improves the reliability of the original once a month production stoppage to clean the bottom of the tank, and now nearly 7 months of continuous production for stoppage to clean. It also reduces the labor intensity of workers.
d. Energy saving: 1) Silver electrolysis has automatic stirring device, avoiding short circuit between cathode and anode, no silver powder in anode bag, saving a lot of nitric acid when dealing with anode mud, according to the current statistics, the daily amount of nitric acid used for cooking anode mud is reduced from 400Kg/day before to 300Kg/day.
2）Reducing the amount of nitric acid by 100Kg per day, generating 36.5Kg less nitrogen oxide per day, and calculating the air volume of 7000m3 per hour according to the data tested in the early stage, the nitrogen oxide content decreases by 1738mg/m3, saving the post-treatment cost after the reduction of nitrogen oxide emission.
Third, improve the stability of electrolyzer operation.
The new silver electrolyzer adopts a new electrolyte circulation method, changing the direction of electrolyte circulation flow in the electrolyzer, adopting the way of parallel flow with the cathode arrangement, effectively reducing the concentration difference polarization between the cathode and the anode, and substantially increasing the current density of electrolytic production and reducing the concentration of silver ions in the electrolyte on the premise of ensuring the quality of silver powder reaches the national standard No.1 silver.
Our company also produces high current density decentralized silver electrolyzer.
Advantages.
1. closed electrolytic bath with side extraction of fumes.
2, single tank daily output of 100 kg, accounting for 600 liters of pressurized electrolyte; single daily output of 200 kg, accounting for 1000 liters of pressurized electrolyte, single daily output of 300 kg, accounting for 1500 liters of pressurized electrolyte.
3、Small footprint of equipment.
4、Single tank electrolysis, for different anode electrolysis, the output silver powder does not pollute each other.