Alkliproof corrosion resistant ceramic packing and producing technique

A technology of ceramic filler and production process, which is applied in chemical/physical/physicochemical processes, chemical instruments and methods, chemical/physical processes, etc. It can solve the problems of poor alkali resistance, long-term use, and easy corrosion, loosening, and softening and other problems, to achieve the effects of low production cost, simple production process, and excellent alkali corrosion resistance

Inactive Publication Date: 2009-02-04
FUJIAN JUNGIE NEW MATERIAL TECH CO LTD
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Problems solved by technology

[0002] At present, ceramic fillers used for mass transfer in the chemical industry usually use kaolin, feldspar, and clay as the main raw materials for processing and production. This common ceramic filler is often called acid-resistant ceramics. Its alkali resistance is poor and it is easily destroyed in alkaline media. Corrosion, looseness, softening and failure, so it cannot be used for a long time in the reaction tower of caustic soda, soda ash, ammonia water and other alkaline media. According to the JC / T457-92 (1996) chemical corrosion resistance testing standard, the alkali resistance of ordinary ceramic packing Only about 86%, the domestic has not yet developed an alkali-resistant ceramic filler with a wide range of raw material sources, a simple production process, and an alkali resistance of more than 99.5%.

Method used

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  • Alkliproof corrosion resistant ceramic packing and producing technique

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Embodiment Construction

[0023] According to the above-mentioned production process, using wollastonite, diopside, black talc, magnesite, and clay as the main raw materials, according to wollastonite 20%, diopside 10%, black talc 26%, magnesite 26%, 18% of clay, weighing 2000 kg, in accordance with the specified production process parameters, followed by raw material drying, weighing, ball milling, sieving, iron removal, filter press, staleness and vacuum mud smelting and other production processes in order to prepare Obtain the plastic clay that can be used for molding, select the Φ25 rectangular saddle ring production mold, and use a suitable vacuum extrusion molding machine to produce the Φ25 rectangular saddle ring blank. After the blank is dried, it takes 5m 3 Liquefied petroleum gas prismatic kiln firing, firing time is 10 hours, firing temperature is controlled at 1230 ℃, and then naturally cooled to below 200 ℃ out of the kiln. The Φ25 rectangular saddle ring after firing has excellent alkali corr...

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Abstract

An alkali corrosion resistant ceramic filler is prepared from wollastonite, diopside, black talc, magnesite, and clay as adhesive. Its advantages are low hydroscopicity, high volume density, hardness and alkali resistance.

Description

Technical field [0001] The invention belongs to the field of chemical industry, and specifically relates to an alkali-resistant ceramic filler with alkali corrosion resistance produced by using wollastonite, diopside, black talc, and magnesite as raw materials and clay as a binder, and its production process . Background technique [0002] At present, as the mass transfer ceramic fillers in the chemical industry, kaolin, feldspar, and clay are usually used as the main raw materials for processing and production. This ordinary ceramic filler is often called acid-resistant ceramics, which has poor alkali resistance and is easily affected in alkaline media. Corrosion, looseness, softening and failure, so it cannot be used for a long time in the reaction tower of alkaline medium such as caustic soda, soda ash, ammonia water, etc. According to JC / T457-92 (1996) chemical corrosion resistance test standard, the alkali resistance of ordinary ceramic packing Only about 86%, domestic has n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/30C04B35/14C04B35/20
Inventor 李成良黄茂金林生明李建树
Owner FUJIAN JUNGIE NEW MATERIAL TECH CO LTD
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