Method for processing raw material of isostatic pressing clay-graphite crucible
A graphite crucible and raw material processing technology, which is applied in the field of raw material processing of hydrostatic clay graphite crucible, can solve the problems of poor strength of dry-processed molded body, difficult operation, complicated phenolic resin treatment, etc., achieves good molding effect, avoids process rejection rate, The effect of excellent sintering properties
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Embodiment 1
[0024] A method for processing raw materials of an isostatic clay graphite crucible, specifically comprising the following steps:
[0025] 1) In parts by weight, take 550kg of flake graphite, 500kg of silicon carbide with a particle size of 150 microns, and 250 kg of clay. The clay is pre-pulverized into -75 micron powder, mixed for 40 minutes with dry material, mixed with 250 kg of water, wet mixed for 40 minutes, and then Rolling, rolling for 8 hours, and then trapping the material at 20±5°C for 15 days, repeating the rolling and trapping process once, keeping the moisture content of the material at 20±5% during the rolling process, and then using a low-speed pulverizer to crush the material Carry out thinning treatment and break up materials;
[0026] 2) Spread and bake the evacuated material obtained in step 1) on a kang at 80°C until the weight percentage of water in the material is 5%, and break the material with a high-speed coulter mixer until there is no formation bet...
Embodiment 2
[0029] A method for processing raw materials of an isostatic clay graphite crucible, specifically comprising the following steps:
[0030] 1) In parts by weight, take 550kg of flake graphite, 500kg of wax stone with a particle size of -4mm, and 200kg of clay. The clay is pre-pulverized into -75 micron powder, mixed with dry material for 30 minutes, added with 250kg of water, mixed evenly, wet mixed for 45 minutes, and then Carry out rolling and compacting for 10 hours, then trap the material at 20±5°C for 15 days, repeat the rolling and trapping process once, keep the moisture content of the material at 20±5% during the rolling process, and then use a low-speed pulverizer to crush the The material is thinned and dispersed;
[0031] 2) Spread and bake the material obtained in step 1) on a kang at 90°C until the weight percentage of water in the material is 8%, and break up the material with a high-speed coulter mixer until there is no agglomeration between the particles , to o...
Embodiment 3
[0034] 1) In parts by weight, take 500kg of flake graphite, 300kg of calcined kaolinite with a particle size of -2 mm, 200 kg of silicon carbide with a particle size of 150 microns, and 230 kg of clay. The clay is pre-pulverized into -75 micron powder, mixed with dry material for 45 minutes, and added with 250 kg of water Mix evenly, wet mix for 35 minutes, then roll and compact for 10 hours, then trap the material at 20±5°C for 15 days, repeat the process of rolling and trapping once, and keep the moisture content of the material at 20± during the rolling process 5%, and then use a low-speed pulverizer to thin the material and break it up;
[0035] 2) Spread and bake the material obtained in step 1) on a kang at 80°C until the weight percentage of water in the material is 7%, and break up the material with a high-speed coulter mixer until there is no agglomeration between the particles , to obtain the raw material for forming the isostatic clay graphite crucible.
[0036] Pu...
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