1.Different firebrick masonry to use the corresponding material of refractory mud, not mixed.

2.The stirred refractory mud should be used immediately, the hardened refractory mud can not be used again.

3.Refractory mud should have appropriate viscosity and fluidity, so that the gap between bricks and bricks as small as possible (even less than 1 mm). The refractory mud on the firebrick should fill the entire surface in order to form a complete expansion joint.

4. The particle size of refractory mud is generally fine-grained refractory mud, which can also be selected according to the thickness of the ash joint, and the maximum particle size should not be greater than 30% of the thickness of the ash joint.