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Alkliproof corrosion resistant ceramic packing and producing technique

A ceramic filler, alkali-resistant technology, used in chemical/physical/physical-chemical processes, chemical instruments and methods, chemical/physical processes, etc. Can not be used for a long time and other problems, to achieve the effects of excellent alkali corrosion resistance, low production cost and simple production process

Inactive Publication Date: 2004-08-11
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 are usually processed and produced with kaolin, feldspar, and clay as the main raw materials. This common ceramic filler is often called acid-resistant ceramics. Its alkali resistance is poor and it is easy to Corroded, loose, softened and invalidated, so it cannot be used for a long time in reaction towers with alkaline media such as caustic soda, soda ash, and ammonia water. According to JC / T457-92 (1996) chemical corrosion resistance testing standard, the alkali resistance of ordinary ceramic packing The alkali resistance is only about 86%, and the domestic has not yet developed an alkali-resistant ceramic filler with a wide range of raw materials, 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

[0022] According to the above-mentioned production process, wollastonite, diopside, black talc, magnesite and clay are used as the main raw materials, according to wollastonite 20%, diopside 10%, black talc 26%, magnesite 26% clay and 18% clay weighed 2000 kg, according to the specified production process parameters, followed by ball milling, sieving, iron removal, pressure filtration, stale and vacuum mud refining and other production processes to prepare plastic clay that can be used for molding Material, select the φ25 saddle ring production mold, use a suitable vacuum extrusion molding machine to produce the φ25 saddle ring green body, after drying the green body, use 5m 3 Firing in liquefied petroleum gas edge kiln, the firing time is 10 hours, the firing temperature is controlled at 1230°C, and then naturally cooled to below 200°C to leave the kiln. After firing, the φ25 saddle ring has excellent alkali corrosion resistance. The product quality inspection results of the ...

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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 in particular relates to an alkali-resistant ceramic filler with excellent alkali corrosion resistance produced by using wollastonite, diopside, black talc, and magnesite as main raw materials and clay as a binder. Production Process. Background technique: [0002] At present, ceramic fillers used for mass transfer in the chemical industry are usually processed and produced with kaolin, feldspar, and clay as the main raw materials. This common ceramic filler is often called acid-resistant ceramics. Its alkali resistance is poor and it is easy to Corroded, loose, softened and invalidated, so it cannot be used for a long time in reaction towers with alkaline media such as caustic soda, soda ash, and ammonia water. According to JC / T457-92 (1996) chemical corrosion resistance testing standard, the alkali resistance of ordinary ceramic packing The alkali resistance is only about 86%, and the dome...

Claims

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Application Information

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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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