CN103382097A - Sawdust ceramic filter core and preparation method thereof - Google Patents

Abstract

The invention provides a sawdust ceramic filter core. The filter core is prepared from the following raw materials by weight: 40 to 55 parts of diatomite, 10 to 15 parts of quicklime, 5 to 10 parts of gypsum, 20 to 25 parts of aluminum powder, 2 to 3 parts of kaolin, 15 to 20 parts of sawdust, 1 to 2 parts of butyl stearate, 10 to 15 parts of sludge, 1 to 2 parts of zirconium fluoride, 3 to 4 parts of sodium carbonate, 1 to 3 parts of dinitrosopentamethylene tetraamine, 1 to 2 parts of polyacrylic acid and 2 to 4 parts of polyethylene glycol. A preparation method for the filter core comprises the following steps: step-by-step ball milling and mixing of the raw materials; slip casting; molding; and sintering. According to the invention, diatomite is used as a base material and sludge and sawdust are added for preparation of the filter core; the raw materials are easily available and cheap, so cost is reduced; porosity is as high as 55 to 65%; and since the waste is changed into the valuable, social benefits are realized.

Description

A kind of sawdust pottery filter core and preparation method thereof

Technical field

The present invention relates to the filter core manufacture field, be specifically related to a kind of sawdust pottery filter core and preparation method thereof.

Background technology

Development along with society, the reinforcement of environmental consciousness, people are more and more higher to drinking the quality standards for water requirement, need less filtering accuracy, require to have simultaneously the decontamination effect improving of sterilization and anticorrosion, the filtration of the purifier that the automobile different sites is filled requires also more and more higher, filter core in purifier plays Main Function, therefore, need to design the filter core of different-effect, satisfy the varying environment demand.

Summary of the invention

The invention provides a kind of sawdust pottery filter core and preparation method thereof.

The present invention adopts following technical scheme:

A kind of sawdust pottery filter core is characterized in that, is prepared from by the raw material of following weight part:

Diatomite 40-55, unslaked lime 10-15, gypsum 5-10, aluminium powder 20-25, kaolin 2-3, sawdust 15-20, butyl stearate 1-2, mud 10-15, Zirconium tetrafluoride 1-2, soda ash 3-4, dinitrosopentamethlyene tetramine 1-3, polyacrylic acid 1-2, polyoxyethylene glycol 2-4.

The preparation method of described sawdust pottery filter core is characterized in that, comprises the following steps:

(1) mud is joined in container, add distilled water, under normal temperature, fully dissolving, then be poured in ball grinder, adds sawdust, butyl stearate, polyacrylic acid, polyoxyethylene glycol by formula rate, with the 150-200rpm rotating speed, and ball milling 4-5 hour;

(2) rest materials of filling a prescription joins in ball grinder, uses the 95-110rpm rotating speed, and ball milling 3-4 hour, obtain mixed slurry, the standing slaking 8-9 of slurry hour, then slowly pour moulding in the die cavity of plaster mould into, obtain hollow filter core base substrate; Standing 2-3 hour, the demoulding obtained the filter core green compact;

(3) with green compact at 90-120 ℃ of dry 3-4 hour, then under protection of inert gas, sinter ceramic element under 800-1100 ℃.

Beneficial effect of the present invention:

Filter core of the present invention adds mud, sawdust take diatomite as base-material, realizes turning waste into wealth, and prepared filter core Adsorption Filtration Properties is good, has simultaneously withstand voltage, corrosion resistance and good, and void content is up to 60%-70%.

Embodiment

A kind of sawdust pottery filter core is prepared from by the raw material of following weight (kg):

Diatomite 55, unslaked lime 10, gypsum 6, aluminium powder 22, kaolin 3, sawdust 20, butyl stearate 2, mud 14, Zirconium tetrafluoride 1, soda ash 3, dinitrosopentamethlyene tetramine 2, polyacrylic acid 3, polyoxyethylene glycol 2.

The preparation method of sawdust pottery filter core comprises the following steps:

(1) mud is joined in container, add distilled water, under normal temperature, fully dissolving, then be poured in ball grinder, adds sawdust, butyl stearate, polyacrylic acid, polyoxyethylene glycol by formula rate, with the 180rpm rotating speed, and ball milling 5 hours;

(2) rest materials of filling a prescription joins in ball grinder, uses the 110rpm rotating speed, and ball milling 3 hours obtains mixed slurry, and then the standing slaking of slurry 9 hours slowly pours moulding in the die cavity of plaster mould into, obtains hollow filter core base substrate; Standing 2 hours, the demoulding obtained the filter core green compact;

(3) with green compact 100 ℃ of dryings 4 hours, then under protection of inert gas, sinter ceramic element under 900 ℃.

The present embodiment makes filter core aperture is at 5 μ m-20 μ m, void content 65%, filtration velocity 22ml/hr.cm ²About (height of water 200mm), folding strength 12Mpa.

Claims (2)

1. a sawdust pottery filter core, is characterized in that, is prepared from by the raw material of following weight part:

Diatomite 40-55, unslaked lime 10-15, gypsum 5-10, aluminium powder 20-25, kaolin 2-3, sawdust 15-20, butyl stearate 1-2, mud 10-15, Zirconium tetrafluoride 1-2, soda ash 3-4, dinitrosopentamethlyene tetramine 1-3, polyacrylic acid 1-2, polyoxyethylene glycol 2-4.

2. the preparation method of sawdust pottery filter core according to claim 1, is characterized in that, comprises the following steps:

(1) mud is joined in container, add distilled water, under normal temperature, fully dissolving, then be poured in ball grinder, adds sawdust, butyl stearate, polyacrylic acid, polyoxyethylene glycol by formula rate, with the 150-200rpm rotating speed, and ball milling 4-5 hour;

(2) rest materials of filling a prescription joins in ball grinder, uses the 95-110rpm rotating speed, and ball milling 3-4 hour, obtain mixed slurry, the standing slaking 8-9 of slurry hour, then slowly pour moulding in the die cavity of plaster mould into, obtain hollow filter core base substrate; Standing 2-3 hour, the demoulding obtained the filter core green compact;

(3) with green compact at 90-120 ℃ of dry 3-4 hour, then under protection of inert gas, sinter ceramic element under 800-1100 ℃.