Feature: Alumina bubble brick has the advantages of high temperature conductivity, heat capacity of small, strong characteristics of insulation. can improve the thermal efficiency of the furnace, shorten the production cycle, reduce the furnace body weight, reduce energy consumption. Thermal insulation material with excellent performance. alumina bubble brick used in tunnel kiln, shuttle kiln, furnaces and furnaces lining, are widely used in metallurgy, light industry, chemical industry, ceramics, glass,electronics and other industries. Our company specializes in the production of alumina hollow ball products, hasrich production experience and mature production technology, the industry are in a leading level.
项目 ltems | 氧化铝空心球砖Alumina bubble brick | 氧化锆空心球砖Zirconia bubble brick | ||
85砖 | 90砖 | 99砖 | 98砖 | |
最高使用温度(℃ Maximum service temperature | 1680 | 1700 | 1800 | 2200 |
Al,0.% | 85 | 90 | 99 | |
ZrO₂% | 一 | 一 | 98(含稳定剂) | |
SiO₂%≤ | 13 | 8 | 0.2 | 0.2 |
Fe₂O₃%≤ | 0.2 | 0.2 | 0.2 | 0.2 |
体积密度g/cm³≤ Bulk density | 1.4-1.7 | 1.4-1.7 | 1.4-1.7 | 3.0 |
常温耐压强度MPa ≥ C.C.S | 12 | 10 | 9 | 8 |
0.1MPa荷重软化开始温度,0.6%℃ ≥ Refractoriness Under Load | 1650 | 1700 | 1700 | 1700 |
重烧线变化率(1600℃×3h)% Permanent Linear Change on heating | ±0.3 | ±0.3 | ±0.3 | ±0.2 |
热膨胀系数(×10-6)(室-1300℃)% Thermal expansion coefficient | ~7.8 | ~8.0 8.6 | ~9.1 | |
导热系数W/m·k(平均温度800℃)≤ Thermal Conductivity | 0.6 | 0.7 1.5 | 0.3 |