Combined and efficient filter pressing device in electrolytic zinc process

Abstract

The invention discloses a combined and efficient filter pressing device in electrolytic zinc process, wherein an inlet pipe branch 1 is connected with an outlet pipe through a three-way cock and one centrifugal pump, a branch 2 is connected with the output pipe through another one centrifugal pump and another one three-way cock, the two centrifugal pumps are driven through a motor, gears of the two three-way cocks are engaged with each other, one of the gears is driven by an active gear to achieve rotating switching of the two three-way cocks, and the gears are up and down communicated through a middle connecting pipe, and an inlet pipe is connected with a zinc solution chute with an inverted conical bottom structure. Two filter presses are connected with the outlet pipe after being connected in parallel and the zinc solution chute is connected with a steam heating combined barrel. The combined and efficient filter pressing device in electrolytic zinc process skillfully utilizes the two three-way cocks, achieves series and parallel free switching operation of the centrifugal pumps, improves filter pressing efficiency, and has the advantages that the structure is simple and the operation is not easy to go wrong. A conical bottom of the zinc solution chute is beneficial to output zinc solution and mineral waste residues. The steam heating combined barrel skillfully utilizes a steam dissolved ring which is formed through a conical ring and a mesh cylinder ring, improves dissolved temperature rising effect, and completely does not have noise interference.

Description

technical field [0001] The invention relates to a device for compounding and high-efficiency pressure filtration in an electrolytic zinc process. Background technique [0002] Electrolytic zinc is a hydrometallurgical process in which zinc ore is pulverized, compounded, impurity removed, blended and then electrolyzed. Compounding is the process of slurrying zinc ore powder in a compounding tank and adding sulfuric acid for chemical reaction. The combination can obtain soluble zinc sulfate, which is convenient for the later electrolysis operation. [0003] At present, the volume of the compounding barrel for industrial application can reach hundreds of cubic meters. During the compounding process, it is necessary to add steam to the compounding barrel to promote the progress of the compounding reaction, which not only realizes the purification of the electrolyte, but also facilitates the high-efficiency electrolysis in the later stage. [0004] However, steam is added into t...

AI Technical Summary

Problems solved by technology

[0007] However, in the filter press operation, the existing centrifugal pumps cannot automatically adapt to such a process to achieve an ideal working state of high efficiency and high quality

Generally, when a centrifugal pump performs filter press operation, the head of the filter press is low in the early stage, but the flow rate is large, so that the motor is in an overload state, and it is easy to burn the motor; The flow rate decreases rapidly. At this time, although the motor works in a light-load and low-power state, the filter press efficiency is very low; although the filter press pump has the maximum head output state, due to the small flow rate of the filter press fluid, the filter press cannot be fully utilized. Work performance and improve work efficiency

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