Disc type filtering machine for low product water content of fine-particle ores

Abstract

The invention belongs to the technical field of dewatering of solid materials, and particularly relates to a disc type filtering machine for low product water content of fine-particle ores. The disc type filtering machine is characterized by comprising a main shaft, a plurality of filtering fans, and distribution heads, wherein the multiple filtering fans are arranged on the main shaft through filtering rods which are arranged along the circumference of the main shaft; the distribution heads are arranged on the main shaft; each filtering fan comprises a liquid absorbing area, a dry absorbing area, a material discharge area and a transition area; the liquid absorbing area of each filtering fan is respectively connected with a liquid absorbing and air connecting port of the corresponding distribution head; each liquid absorbing and air connecting port is connected with a liquid absorbing vacuum pump through a pipeline; the dry absorbing area of each filtering area is connected with a dryabsorbing and air connecting port of the corresponding distribution head; each dry absorbing and air connecting port is connected with a dry absorbing vacuum pump through a pipeline. The disc type filtering machine has the advantages that the two vacuum pumps correspond to the dry absorbing area and the liquid absorbing area, so that the defect of failure to simultaneously consider the vacuum degrees of liquid absorbing and dry absorbing due to use of one vacuum pump in the traditional filtering machine is overcome; the thin filter cake layer can be dewatered at high vacuum degree, and the minimum content of product water is 7%, and can be lower than the water content of traditional machine.

Description

technical field [0001] The invention belongs to the technical field of solid material dehydration, and in particular relates to a disc filter for fine-grained ore with low product moisture. Background technique [0002] Vacuum disc filter is widely used in the dehydration of solid powder due to its continuous operation, large processing capacity per unit area, and small footprint. The suction and drying operation of a filtration cycle of the current vacuum disc filter requires negative pressure vacuum suction. The two operations are responsible for the suction through the same vacuum pump. The suction and drying operations of different filter fans are different from those of the distribution head. Connect to the same air port. In this way, the suction pressure of the two different operations of liquid suction and dry is the same. Generally, in order to reduce the moisture content of the product as much as possible, the negative pressure required in the dry area is relativel...

AI Technical Summary

Problems solved by technology

In this way, the suction pressure of liquid suction is often too high, resulting in too thick a filter cake layer, and the final product moisture is too high, especially for fine-grained minerals, it is often difficult to reduce the product moisture, and often the product moisture is 12%-15 %, which requires subsequent drying operations to consume more energy and increase the cost of drying

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