Honeycomb producing process needing no tung oil and less cellulose

Abstract

The process of producing honeycomb ceramic with no tung oil and less cellulose includes the following steps: 1. milling glutinous rice into powder, adding water and steaming; 2. adding wheat flour in 3-5 wt% and cooking into panada; 3. adding alumina sol or silicon sol in 20-30 wt% and milling slurry in a ball mill; 4. 80 mesh sieving the slurry serving as the temporary adhesive for honeycomb ceramic; and 5. adding the temporary adhesive in 18-23 wt% and carboxymethylcellulose in 0.5-0.8 wt% into compounded honeycomb ceramic material, kneading, vacuum mixing, extruding to form, drying and sintering to obtain honeycomb ceramic. The present invention has the advantages of environment friendship, low production cost, high heat shock resistance, high heat conductivity, etc.

Description

technical field [0001] The invention relates to a production method of honeycomb ceramics. Background technique [0002] The current extrusion molding method to produce honeycomb ceramics mostly uses carboxymethyl cellulose and tung oil as temporary binders for materials. Usually, the proportion of carboxymethyl cellulose is 1.5-2.5%, and the proportion of tung oil is 5-6%. , this method has the following hazards and inadequacies: First, the honeycomb ceramic blank will produce a large amount of decomposition gas when it is shaped and dried by microwave, so that the workers who have been operating in this environment for a long time often feel dizzy, and all of them have a sallow complexion. Harmful gas spreads around during firing; second, both carboxymethyl cellulose and tung oil are expensive, making the production cost of honeycomb ceramics high; third, carboxymethyl cellulose will leave Na in the green body. 2 The ash content composed of O and NaCl ranges from 10% to 4...

AI Technical Summary

Problems solved by technology

[0002] The current extrusion molding method to produce honeycomb ceramics mostly uses carboxymethyl cellulose and tung oil as temporary binders for materials. Usually, the proportion of carboxymethyl cellulose is 1.5-2.5%, and the proportion of tung oil is 5-6%. , this method has the following hazards and inadequacies: First, the honeycomb ceramic blank will produce a large amount of decomposition gas when it is shaped and dried by microwave, so that the workers who have been operating in this environment for a long time often feel dizzy, and all of them have a sallow complexion. Harmful gas spreads around during firing; second, both carboxymethyl cellulose and tung oil are expensive, making the production cost of honeycomb ceramics high; third, carboxymethyl cellulose will leave Na in the green body. 2 The ash content composed of O and NaCl ranges from 10-40%, which will affect the performance of honeycomb ceramic products