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The chimney lining is made of light acid-resistant castable, which has strong air tightness, and does not require light and heavy layers. The two-layer material construction reduces the thickness of the lining and improves the thermal insulation performance.

At the back of the cement rotary kiln, the length of the kiln mouth is about 1 meter, wear-resistant castable can be selected, but it must have a certain degree of alkaline resistance. The castable area from 10D to the rear kiln entrance can use anti-spalling high-alumina bricks; The 7D-10D section of the rotary kiln can use silmo brick or Silmo red brick; Section 5D-7D is a transitional zone, which can use magnesia-aluminum spinel brick; The 6D-7D section can also use Silmo brick or Silmo red brick;

Phosphate brick is most suitable for use in white ash kiln, zinc kiln lining, can be used for high temperature zone and transition zone. If it is a white-ash rotary kiln, the entire kiln lining can use phosphate bricks, but it is the use of high density bricks in the high temperature zone, and the use of low density bricks in the transition zone.

The corundum brick is a kind of refractory brick with alumina content greater than 85%, corundum brick is divided into sintered and fused corundum brick, and chrome corundum refractory brick is added to corundum Cr2O3, after high temperature molding, high temperature sintering of high-grade refractory brick, chrome corundum refractory brick is also divided into fused cast chromium, sintered chrome corundum refractory brick.

The advantage of refractory ramming material is that it can be pounded on the spot in the form of ramming, the equipment uses air pick or mechanical ramming, the amount of material is less or the use of unimportant parts, and it can also be tied by hand. However, the disadvantage of refractory ramming material is that the construction speed is faster than that of refractory castable, and the labor intensity is greater than that of castable.

The process of dry barrier refractory is made of clay clinker as refractory aggregate, and the third grade high aluminum clinker is processed into different granular aggregate and powder, which is processed by micro-powder technology and bonding agent.