Full-sintered ceramic filter element

Abstract

The invention discloses a full-sintered filter element which is formed by mixing 5-10 percent of green dry stone powder, 65-75 percent of alumina powder, 10-20 percent of kaolin and 2-8 percent of evaporating agent counted in percentage by weight and sintering the mixture at the temperature of 1000-1200DEG C. The outer surface of the full-sintered filter element disclosed by the invention is coated by a layer of alumina, so that the absolute filtering precision reaches 0.3-1 micrometer. The full-sintered filter element disclosed by the invention has the advantages of acid and alkali resistance and high temperature and high pressure resistance and is suitable for filtering flue gas in the chemical production process of which the temperature range is within 500DEG C and the pH value is in a range of 1 to 13.

Description

technical field

[0001] The invention relates to a filter element, in particular to a fully sintered ceramic filter element. Background technique

[0002] In the prior art, activated carbon is generally used as a filter element to purify some liquids and gases, but activated carbon is not resistant to high temperature, acid and alkali, and pressure, so the application range of activated carbon as a filter element is limited. In chemical production, there is an urgent need for a filter element that is resistant to acid and alkali, high temperature and high pressure, and has good filtration and adsorption effects. Contents of the invention

[0003] In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a fully sintered ceramic filter element, which solves the problems that the existing filter element is not resistant to acid and alkali, high temperature and high pressure.

[0004] In order to solve the above-mentioned techni...