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Preparation method of high-strength electroceramic
The invention discloses a preparation method of high-strength electroceramic. The preparation method includes the specific technological steps that 1, the high-strength electroceramic is prepared from, by mass, 20-30 parts of calcined bauxite, 20-30 parts of mullite, 20-35 parts of high plastic clay and 15-25 parts of feldspar; 2, after all raw materials in step 1 are mixed, water is added, ball-milling is conducted, and slurry is obtained; 3, the slurry is subjected to sieving and iron removal, and mud cakes are obtained after pressure filtration dehydration; 4, the mud cakes are subjected to aging for over 24 hours after coarse milling, then the mud cakes are extruded into electrical porcelain wet billets of the required sizes through a vacuum deairing machine, and green bodies are obtained through fettling and drying; 5, the green bodies are placed in a drawer type or tunnel type kiln and sintered at the temperature of 1260-1330 DEG C for 24-48 hours; then cooling is conducted, and high-strength electroceramic products are output from the kiln. The high-strength electroceramic material is wide in raw material source, good in process performance, low in manufacturing cost and particularly suitable for being used for manufacturing high-strength porcelain insulators used for extra-high voltage and super-high voltage power transformer lines and power stations.
Preparation method of high-strength electroceramic
The invention discloses a preparation method of high-strength electroceramic. The preparation method includes the specific technological steps that 1, the high-strength electroceramic is prepared from, by mass, 20-30 parts of calcined bauxite, 20-30 parts of mullite, 20-35 parts of high plastic clay and 15-25 parts of feldspar; 2, after all raw materials in step 1 are mixed, water is added, ball-milling is conducted, and slurry is obtained; 3, the slurry is subjected to sieving and iron removal, and mud cakes are obtained after pressure filtration dehydration; 4, the mud cakes are subjected to aging for over 24 hours after coarse milling, then the mud cakes are extruded into electrical porcelain wet billets of the required sizes through a vacuum deairing machine, and green bodies are obtained through fettling and drying; 5, the green bodies are placed in a drawer type or tunnel type kiln and sintered at the temperature of 1260-1330 DEG C for 24-48 hours; then cooling is conducted, and high-strength electroceramic products are output from the kiln. The high-strength electroceramic material is wide in raw material source, good in process performance, low in manufacturing cost and particularly suitable for being used for manufacturing high-strength porcelain insulators used for extra-high voltage and super-high voltage power transformer lines and power stations.
Preparation method of high-strength electroceramic
XIAO HANNING (author) / CHENG JUAN (author)
2016-01-20
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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