A compound and high-efficiency filter press device in electrolytic zinc process

Abstract

The invention discloses a compounding and high-efficiency filter press device in the electrolytic zinc process, which includes an inlet pipe, an outlet pipe, two centrifugal pumps and two filter presses. Once the inlet pipe branch is connected to the outlet pipe through a three-way cock and the centrifugal pump, The second branch is connected to the outlet pipe through another centrifugal pump and another three-way cock; the two centrifugal pumps are driven by the same motor; the two three-way cocks are connected up and down through the central connecting pipe; the inlet pipe is connected to the zinc solution flow tank, which has an inverted It has a tapered bottom structure; two filter presses are connected in parallel and connected to the outlet pipe, and control valves are installed on the parallel branches; the flow channel is connected to the steam heating compound barrel. The invention cleverly utilizes two three-way cocks to realize the free switching operation between series and parallel of the centrifugal pump, improves the filtering efficiency, has the characteristics of simple structure and less error-prone operation; the conical bottom of the launder is conducive to the dispersion of zinc solution and slag. Output: The steam heating compound barrel cleverly uses the steam dissolving ring composed of the conical ring and the sieve hole cylindrical ring to improve the dissolving and heating effect without any noise interference.

Description

technical field [0001] The invention relates to a compounding and high-efficiency filter press device 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 the chemical...

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

Images