Generally, 98 and 97 grade magnesia bricks are used in the top layer of the regenerator lattice; 96-95 grade magnesia bricks are used in the upper layer; directly combined magnesia chrome bricks are used in the middle layer; and low porosity clay bricks are used in the lower layer. The stability and heat transfer effect of tubular brick are better than that of strip lattice brick. For example, the specific heat exchange area of the tubular brick is 16 / m, and the structure of the strip brick is only 10.4-12.7/m.

The important properties of lattice are erosion resistance and creep resistance. In order to improve the creep resistance, the raw materials with high purity, low porosity, large grain and low iron should be used, and high sintering temperature and sufficient sintering should be adopted. The direct combination of chromium in magnesia chrome brick plays an important role in improving corrosion resistance, but it will produce toxic Cr6 +. In order to solve chromium pollution, magnesia zirconia brick was developed. The reference properties of magnesia zirconia brick are MgO 73-78%, ZrO2 13%, SiO2 11-8%, bulk density 3.10-3.20 g / cm3, apparent porosity 15-11%, compressive strength 100-130 MPa, load softening temperature t0.61570-1670 ℃.