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In China, there are many enterprises such as Huludao Zinc Factory, Yongxing Guiyuan, Hengbang Smelting, Zhaogin Refining, Chifeng Shanjin Silver Lead, Zhejiang Hongda, Yunxi Copper, Xiyu Nonferrous Metals, etc. Through a large number of manufacturers to produce the actual summary of the following advantages: environmental protection, labor saving, time saving, energy saving, to ensure the stability of technical parameters. Specific performance in the following areas.
I. Improve the working environment of the site: this design of high efficiency silver electrolysis equipment uses the chiller to cool down the electrolyte, the temperature of the chiller is set to 40℃ when the electrolyte is running, when the temperature of the electrolyte reaches 40℃ the chiller automatically starts to cool down the electrolyte, when the temperature drops below 40℃ the chiller automatically stops running. 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.
II. Fast electrolysis speed and significantly higher output: fast electrolysis speed, high efficiency of conventional silver electrolysis current density of 300A/M2 (current density of 750A/M²). Current density is 2-3 times higher than the current conventional silver electrolyzer. With the same size equipment, the production capacity is greatly increased. Smaller production floor space required for the same production capacity. It effectively increases the capacity of the equipment (by 2-3 times), and the actual output is 330Kg per day according to the current operating current of 1500A, which greatly reduces the occupation and loss of silver in the production process and significantly reduces the working capital and financial cost of the enterprise.
Three. (1) Adopt the mechanical loading method, after the electrolysis is finished, the electrolyte will flow back into the low circulation tank through the solid-liquid separation device, and the silver powder will fall directly into the car for transporting silver powder, which will be sent to washing and ingot casting, so as to reduce the labor intensity of workers. 2) Adopt the automatic stirring device, the silver powder output on the cathode plate will be scraped off automatically, so there is no need for manual scraping off. The U-shaped trough on the side of the tank effectively blocks the short circuit between the cathode and the anode, which not only improves the reliability of the operation of the electrolyzer, but also reduces the labor intensity of workers.
IV. Energy saving: 1) High efficiency silver electrolysis has automatic stirring and U-shaped device, which avoids short circuit between cathode and anode, and the amount of silver powder in the anode bag is greatly reduced, which saves a lot of nitric acid when dealing with anode mud, and according to the current statistics, the daily nitric acid dosage for boiling anode mud is reduced from 400Kg/day to 300Kg/day. 2) The daily nitric acid dosage is reduced by 100Kg, which generates 36.5Kg less nitrogen oxide per day. Nitrogen oxides 36.5Kg, according to the air volume of 7000m3 per hour in the early testing data, the content of nitrogen oxides drops 1738mg/m3, and the nitrogen oxides emission is reduced to save the post-processing cost.
V. Improve the stability of electrolytic tank operation: the new silver electrolytic tank adopts a new electrolyte circulation method, changing the direction of electrolyte circulation flow in the electrolytic tank, adopting the way of parallel flow with the cathode arrangement, effectively reducing the concentration difference between the cathode and anode polarization, ensuring that the quality of silver powder reaches the national standard 1 silver, significantly increasing the current density of electrolytic production, and reducing the Silver ion concentration, advantages: 1, closed electrolytic tank, fume side pumping; 2, single tank daily output of 100 kg, accounting for 600 liters of electrolyte; single daily output of 200 kg, accounting for 1000 liters of electrolyte, single daily output of 300 kg, accounting for 1500 liters of electrolyte; 3, small footprint of equipment; 4, single tank electrolysis, for different anodes electrolysis, the output of silver powder does not pollute each other.
