1. Preparation
Materials: Semi-graphite brick, microporous carbon brick ,ultramicroporous carbon brick ,microporous corundum brick ,silicon nitride combined with carbonized silicon brick ,phosphate impregnated clay brick, etc., the required refractory materials are prepared and stored properly.
Construction preparation:After the completion of welding and assembly of blast furnace shell group, the construction site should be cleaned up, spraying equipment adjusted, and scaffold erected.
2. Sketch
a. Furnace bottom
b. Hearth
c. Cooling wall
d. Construction of iron mouth tuyere combined brick
According to the center point, three lines are released, that is, center line of tuyerand iron mouth, center line of tuyerand iron mouth masonry edge line of blast furnace inner diameter circle line is constructed in accordance with three lines for control, check and adjust at any time, pay attention to check the inner diameter of hole mouth.
e. Bottom, waist and body
Furnace throat steel brick area filling construction, debugging good mixer vibrator, etc., according to the technology of homogeneous mixture ratio, poured into the cooling wall or steel brick, vibrating close-grained daub after surface is flat and level Between furnace shell and the cooling wall grouting construction, and then in the welded anchor construction, the application of spray coating on a reserved good juncture, as far as possible a reaches the designed thickness, too thick flat, surface finishing
3. Key points of construction quality
4. Remark
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