Rotating-platform vacuum filtering machine and filtering method

Abstract

The invention provides a rotating-platform vacuum filtering machine. The rotating-platform vacuum filtering machine comprises a filtering disc, a feeding port and a discharging screw. The rotating-platform vacuum filtering machine is characterized by also comprising a scraper and a spraying pipe, wherein the scraper is arranged above the filtering disc along the radius direction of the filtering disc; the scraper is arranged between the feeding port and the discharging screw; the spraying pipe is parallel to the scraper. The rotating-platform vacuum filtering machine provided by the invention has the advantages that one or more scrapers and the spraying pipe adaptive to the scraper are additionally arranged, and filtering cakes are cleaned, filtered and discharged in a gradual-progressive and layering manner, so that the filtering effect is improved, the content of titanium entrained in ferrous sulfate is reduced, further the yield of the titanium is increased and simultaneously the treating capability is also improved.

Description

technical field [0001] The invention relates to the technical field of filtration, in particular to a turntable vacuum filter and a filtration method. Background technique [0002] Filtration means that under the action of driving force, the fluid in the suspension (or dust-containing gas) on one side flows to the other side through the pores of the porous medium. Particles are trapped, thereby realizing the separation operation process of fluid and particles. The filtered suspension is also called filter pulp, the particle layer retained during filtration is called filter cake, and the filtered clear liquid is called filtrate. In actual production, the equipment that uses the above principles to separate solid and liquid is called filtration equipment, which is widely used in chemical, petroleum, pharmaceutical, light industry, food, mineral processing, coal and water treatment and other departments. [0003] Filtration equipment can be divided into gravity filter, pressu...

AI Technical Summary

Problems solved by technology

The filtration quality of the turntable vacuum filter will directly affect the residual titanium content in ferrous sulfate, thus affecting the titanium yield

In the existing technology, the technology of the turntable vacuum filter is relatively mature, but due to the instability in the actual production process of titanium dioxide, and the actual objective factors such as large processing capacity, there are still defects of low filtering effect, so how to improve The filtration effect of the turntable vacuum filter, so as to improve the titanium yield in the production process of sulfuric acid titanium dioxide, has always been an important research direction in the industry

Images