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Porous ceramic filter Main features

Porous ceramic filter is a kind of refractory materials as aggregate, binding agent with the ceramic filter material made of high temperature sintering. Its internal structure has fine pores through a lot of inertia of a controlled pore size. In addition it has a high temperature, high pressure, acid and alkali corrosion properties, but also has uniform pore size, permeability characteristics. It can be widely used as filtration, separation, gas distribution and sound deadening material. Foreign Since the 1950s, it began to use porous ceramic filter element made on the water purification, sterilization of mineral water, oil, gas purification. Up to now, the products have been standardized, serialized. Application of domestic microporous ceramic filtering technology, although the late start. But as a microporous ceramic filter element consisting of a ceramic filter. In the separation of various industries, in the field of purification have been more comprehensive application. Such as the petrochemical industry, liquid-solid, gas-solid separation, pharmaceuticals, brewing industry sterile purification treatment, environmental protection industry in the high temperature flue gas dust removal. At present, the ceramic filter with its unique features, in the separation, purification has become an irreplaceable product.

Porous ceramic filter material properties

Microporous ceramic material, size and variety. Wherein the foreign production of porous ceramic materials material mainly aluminum silicate, clay, corundum, quartz, silicon carbide and diatomaceous earth quality and the like. Domestic production mainly corundum, quartz and diatomaceous earth quality. Its main properties are shown in Table I.

Aperture: show products open pore size, here is the maximum diameter of the opening article. Porous ceramic filter element pore size can be divided into 1,5,10,20,30,50,80,100,120,150,200,250,300μm series.

Porosity: article open pore volume percentage of the total volume V opening / V total × 100% permeability K:. 1mmH2O refers under pressure, in a unit time lh through the thickness of lcm, dry area of 1m2 of porous ceramics gas volume (m3).

Acid resistance: Porous ceramic products with a 20% sulfuric acid solution after boiling 1h flexural strength and flexural strength than before corrosion.

Alkaline: Porous ceramic products by 20% NaOH solution and cook fee 1h after the bending of the bending yo percentage strength before corrosion.

Temperature resistance: resistance of porous ceramics temperature changes without damage.

The main features of microporous ceramic filter material

1). Porous ceramic filter material porosity, up to 60%. Uniform pore size and easy to control. High filtration precision up to 1μm, for a variety of precision filter media.
2). Acid and alkali resistance. Suitable strong acid (sulfuric acid, nitric acid, hydrochloric acid), alkali (hydrogen chloride and the like) and various filtering organic solvents.
3). High mechanical strength, working pressure up to 6MPa, pressure up to 1MPa.
4). High temperature, good thermal quench acute performance, operating temperature up to 800 ℃. For a variety of high temperature gas filtration.
5). Clean the filter element itself state, non-toxic, tasteless, no foreign matter off, suitable for aseptic processing operations.
6). Filter element long life, long-term use, a microporous morphology does not change, easy to clean regeneration.