High Alumina Brick - SK36

Grade 3 high alumina bricks are a kind of neutral refractory material, the main component of which is alumina (Al₂O₃), with a content of not less than 48%.

Made by using different grades of bauxite clinker and formula binder, after molding and calcination, they have high thermal stability and refractoriness, and are mainly used for open-hearth heat storage checker bricks, plugs for pouring systems, sprue stones, etc.

Send Message Inquiry

Product Feature

(1) High refractoriness

(2) High refractoriness under load

(3) Strong slag resistance

(4) High compressive strength

(5) Good stability

(6) Good wear resistance

Product Application

(1) Iron and steel manufacturing industry: blast furnace, hot blast furnace, electric furnace, ladle, tundish, heating furnace, refining furnace, heating furnace, annealing furnace, cupola

(2) Nonferrous metal industry: smelting furnace, refining furnace, reverberatory furnace, converter furnace.

(3) Building materials industry: cement kiln, glass kiln, ceramic kiln, lime kiln, kiln car, tunnel kiln

(4) Energy and incineration: coke oven, circulating fluidized bed boiler, carbon roaster, incinerator.

Product Property

Item	Index
Model	SK35	SK36	SK37	SK38	SK39
Al2O3/%	≥48	≥55	≥65	≥75	≥80
Fe2O3/%	≤2	≤2	≤2	≤2	≤2
Body density（g/cm3）	2.15	2.2	2.3	2.4	2.5
Refractory	≥1750 °C	≥1770 °C	≥1790 °C	≥1790 °C	≥1790 °C
Change in heating permanent line/%	1450℃×2h -0.4~0.1	1450℃×2h -0.4~0.1	1450℃×2h -0.4~0.1	1500℃×2h -0.4~0.2	1500℃×2h -0.4~0.2
Cold pressing strength	≥39Mpa	≥44Mpa	≥49Mpa	≥54Mpa	≥65Mpa
Apparent porosity (≤)	≤22%	≤22%	≤23%	≤23%	≤21%
Load softening temperature [0.2MPa*0.6%]≥	≥1420 °C	≥1470 °C	≥1500 °C	≥1520 °C	≥1530 °C