Method and device for charging fluoride salt bin on electrobath

Abstract

The invention discloses a method and a device for charging a fluoride salt bin on an electrobath, which belong to the technical field of electrolysis. In the device, an outlet of a concentrate phase delivering tank is connected with a concentrate phase conveying pipe connected with one or more of intermediate bins, the bottom of each intermediate bin is connected with one or more chutes, and the chutes are connected in a mode of parallel or serial or mixed connection when each intermediate bin is connected with the chutes. The method comprises the following steps that: (1) under the action of compressed air, fluoride salt powder enters the concentrate phase conveying pipe from the concentrate phase delivering tank and sequentially enters the intermediate bins connected with the concentrate phase conveying pipe; and (2) air sources are supplied to the chutes, and the fluoride salt powder in the intermediate bins enters the fluoride slat bin. Due to the intermediate bins arranged between the chutes and a discharged material cutting device, the method and the device reduce investment and operation cost, facilitate productive operation. The method and the device have good application prospects.

Description

technical field [0001] The invention belongs to the technical field of electrolysis, and in particular relates to a method and a device for feeding a fluoride salt feed box on an electrolytic cell. Background technique [0002] At present, many electrolytic aluminum plants generally use manual or crane feeding methods to feed the fluoride salt feed box on the electrolytic cell. Manual feeding requires a lot of manpower, the upper and lower electrolytic cells have a high risk factor, and the work is cumbersome, time-consuming and laborious; the use of crane feeding increases the workload of the crane, and the feeding device still needs 2 to 3 people on the ground to hoist the crane Filling inside. Such a feeding method not only wastes manpower and working hours, but also increases the workload of the crane, resulting in shortened service life of the crane, increased maintenance workload, and indirectly increases the use and maintenance costs of the crane. [0003] According...

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Problems solved by technology

[0005] 1. There are many automatic control points, which require more electrical control components, resulting in cumbersome operation of the control system;

[0006] 2. Due to the large number of control components, the number of self-control cables also increases and the lines are staggered and complicated, and the laying work is cumbersome;

[0007] 3. After the system is running, due to the high pressure of the dense phase feeding gas, it is easy to cause damage to the diaphragm of the extrusion valve, which needs to be replaced frequently, and the maintenance work is cumbersome

[0008] Multi-point control components, a large number of control cables, complex control procedures and high maintenance frequency due to high voltage will inevitably lead to particularly high investment and operating costs. The cost of the entire automatic conveying system is about 10 million yuan

Due to the high cost, many aluminum factories abandon the automatic conveying system and use manual or crane to add fluoride salt to the electrolytic cell, which is time-consuming and labor-intensive, which brings inconvenience to production

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