High-alumina products, production processes and guessed that the clay mass production process is similar.
High alumina bricks for firing system of the following three areas:
1, load kilns: as the firing temperature of the product is nearing his refractoriness, loaded kiln without piling too much, often used in the code.
2, the sintering temperature of 600 degrees Celsius, heating rate slowly.
3, medium temperature phase of heating rate did not affect product quality. For crystallization of corundum and mullite full and eliminate black-hearted, when in kiln, usually in the high temperature phase reductive flame and thermal insulation and cold phases with weak oxidizing flame inhibition, cool to 1200 degrees Celsius or so, in favour of small grain in the liquid phase. Or in the high temperature phase with near-neutral weak oxidizing flame, heat preservation phases with weak reductive flame heating, conducive to uniform temperature within the kiln today, grain grows up.
The two different methods of firing, have achieved good results in different factories, at the time of tunnel kiln, high temperature phases with weak oxidizing flame is better.
