Horizontal disc filter applied in alkali making industry

Abstract

The invention discloses a horizontal disc alkali filter applied in alkali making industry, belonging to a filtering process of applying a horizontal disc filter in alkali making industry. When the horizontal disc filter is in washing operation, three washing sections are arranged: the washing liquid discharged from the third washing section after washing is conveyed to the second washing section to be used, the washing liquid discharged from the second washing section after washing is conveyed to the first washing section to be used, and the washing liquid discharged from the first washing section after washing is discharged into a waste water tank. The horizontal disc alkali filter disclosed by the invention effectively overcomes many defects of the existing drum-through alkali filter, the washing sections are additionally arranged, and the washing water can be recycled, thereby achieving the purposes of realizing a good filtering effect, lowering the washing cost, improving the dewatering efficiency, facilitating use and maintenance and improving the product quality.

Description

technical field [0001] The invention belongs to the technical field of alkali filtering equipment in the alkali production industry, and mainly relates to a horizontal disc alkali filtering machine applied in the alkali manufacturing industry. Background technique [0002] At present, in the alkali production industry, drum filters and belt filters have always been used for alkali filtration. [0003] Practice has shown that drum type caustic soda filter and belt filter have always existed: (1) high consumption of washing water, (2) high water content of filter cake, (3) high salt content in products, (4) complex equipment structure , (5) Defects such as difficult maintenance, (6) Quick replacement of wearing parts and large investment. [0004] Horizontal disc filter is a filter equipment suitable for cleaning and solid-liquid separation of various metal or non-metallic ore pulps and other fine particle material slurries. Its structure is as Figure 1-2 As shown: it is ma...

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Problems solved by technology

In view of this, the inventor has determined the technical scheme of applying the horizontal disc filter to the soda-making industry through a long period of analysis and research on the basis of a large number of experiments, and solved the problem of the filter cloth of the existing rotary drum type soda filter. Defects such as low service life, fragile steel wire, difficult replacement, poor sealing, increased filtration loss, large water consumption, and insufficient washing of the filter cake

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