Filling water washing pulp filter press

Abstract

The invention discloses a filling and washing type ore pulp press filter. The ore pulp press filter comprises a press filter, wherein a stirring compound bucket, a proportioning bucket and a water storage tank are connected with the ore pulp inlet of the press filter through valves and a press filter pump; a press filter plate is provided with a common water nozzle and a magnetic control water nozzle at intervals; the thread connector of the magnetic control water nozzle is connected with the press filter plate; a turnbuckle is convenient for the flexible and longitudinal movement of a valve rod; the valve rod, under the effect of magnetic force, drives a valve core to close or open a liquid flow channel; a magnetic stripe base plate is arranged near to the magnetic control water nozzle; a magnet is arranged on the magnetic stripe base plate; the magnetic stripe base plate is connected with an electric operating mechanism; the electric operating mechanism ensures that the magnet gets close or leaves the magnetic control water nozzle. The press filter conveniently realizes the recovery of valuable constituents in slag filter cakes, ensures that the recovery rate reaches more than 90 percent, can obviously save energy and reduce emission, and improves the yield; the magnetic control valve is simple and skillful in design, greatly reduces the labor intensity and improves the operation safety, and compared with an electromagnetic valve, the magnetic control valve has simple and reliable structure, and is convenient to use.

Description

technical field [0001] The invention relates to a pulp filter press, in particular to a filled and washed pulp filter press. Background technique [0002] Hydrometallurgy is a processing and utilization method in which the ore is ground into powder and then leached. The leached pulp needs to be filtered. Therefore, the filter press is a very important equipment for solid-liquid separation in the hydrometallurgical process. In the hydrometallurgical process, generally a larger filter press is used for hydraulic compression. After the filtration is completed, the inner diaphragm of the frame plate is hydraulically expanded to realize expansion and extrusion, so as to reduce the liquid content in the filter residue as much as possible and reduce the loss of soluble valuable components. . [0003] However, the pulp filter residue after expansion and extrusion still contains about 30% liquid, and the water-soluble valuable components (metal ions) contained in the residual liquid...

AI Technical Summary

Problems solved by technology

[0004] However, none of the existing pulp filter presses can solve this technical problem more conveniently. Although some filter presses in the food field can use air to blow the filter residue dry, they need to be manually unscrewed or closed one by one during the air blowing process. The faucet on the filter press plate is very cumbersome, and the workload of the workers is very heavy, especially when the pulp is filtered, due to the huge filtering capacity, there are generally hundreds of faucets, and most of the pulp has been treated with acid and alkali, which is corrosive and Toxic, so manual operation is not only cumbersome, but also unsafe

[0005] Moreover, about 20% of the liquid still remains in the filter cake dried by air. Therefore, the existing filter press cannot meet people's requirements for pulp filtration, and needs to be improved according to the characteristics of the pulp.

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