Low creep clay brick for ceramic burner is made of special bauxite clinker and special additives. It has the advantages of large heat storage capacity and low creep rate after high pressure forming and high temperature firing. It is suitable for supporting hot blast furnaces of large, medium and small blast furnaces, mainly used in the middle and lower walls of heat storage, lower lattice bricks, support strings and other parts.

Taking the super grade pyroxene, mullite and andalusite as the main raw materials, and adopting the three-stage mixing and fine grinding, the actual physical and chemical properties of the excellent hot blast stove bricks and products can all meet the requirements of Panzhihua Iron and Steel Co., Ltd., some of their performance indexes are similar to those of Japanese products, and reach the product indexes of the same kind of foreign products.

Project Indicators	GNRB － 1	GNRB － 2
AL2O3 %	≥ 39	≥ 42
Fe2O3 %	≤ 2.0	≤ 2.0
K2O+Na2O , %	≤ 1.5	≤ 1.0
bulk density,g/cm3	≥2.10/2.05	≥2.15/2.10
Apparent porosity , %	≤ 22/24	≤ 20/23
Normal temperature compressive strength , MPa	≥ 35/25	≥ 35/25
Flexural strength at room temperature , MPa	≥ 8/7	≥ 10/8
0.2MPa load softening start temperature ℃	≥ 1360	≥ 1390
Change rate of reheating line （1400℃×4h ）,%,	± 0.2	± 0.2
Creep rate(0.2Mpa),%	1200℃×20～50h ， ≤ 0.2	1250℃×20～50h ， ≤ 0.2
注：表中分母为格子砖指标