(1) Brick selection.

Any defective bricks that exceed the standard requirements such as cracks, blisters, fire smashes, ribs, corners, distortions, uneven end faces, missing sub-ports, looseness, and excessive dimensional tolerances are not used.

(2) Brush bricks.

The inner working surface of the brick that meets the standard requirements must be cleaned with a steel brush to remove the ash.

Then, according to the variety, the date code is placed in the baking kiln.

(3) Baking.

The brick for molding must be baked in a baking kiln at 80-160 ° C for 48 hours, and the moisture content in the brick is ≤ 0.3%.

(4) Hoop.

The funnel brick C2 should be tightened with iron hoop before use to prevent cracking when pouring steel.

Notice:The bricks in the text, unless otherwise specified, refer to refractory bricks.