hollow ball castable
features: high Load softening temperature, strong strength, so the use of temperature is generally 1500~1700 degrees Celsius.
use: it is used as lining and insulating layer of high temperature kiln such as carbon black furnace, gasifier, gas-making furnace and ceramic refractory for petrochemical industry.
Physical and chemical indicators：
Project |
Alumina Hollow Ball |
Zirconium oxide Hollow Ball |
Sialon combined with AL2O3 Hollow Ball |
|
LKZ-88 |
LKZ-98 |
ZKZ-98 |
-- |
℃
Maximum operating temperature |
1650 |
1800 |
2000～2200 |
1600 |
|
Al2O3%，≥ |
88 |
99 |
-- |
70 |
|
ZrO2%，≥ |
-- |
-- |
9.8 |
-- |
|
SiO2%，≤ |
-- |
0.2 |
0.2 |
-- |
|
Fe2O3%，≤ |
0.3 |
0.15 |
0.2 |
N≥5 |
g/cm3
Bulk density |
1.30～1.45 |
1.40～1.65 |
≤3.0 |
1.5 |
Mpa，≥
Cold crushing strength |
10 |
9 |
8 |
15 |
℃（0.2Mpa,0.6%）≥
Refractory under load |
1650 |
1700 |
1700 |
1700 |
|
%（1600℃×3h）Reheating linear change rate |
±0.3 |
±0.3 |
±0.2 |
-- |
，10-6（～1300℃）Termal expansivity,
(Room temperture) |
～8.0 |
～8.6 |
-- |
Thermalshockresistance,times次（1100℃water cooled）≥15 |
Thermal conductivity w/(m.k),≤（average temperature800℃）
|
0.9 |
1.0 |
0.5 |
1.1 |
Product Images
Our Company
Henan Guangda Refractories Co., Ltd is a high-tech enterprise which is dedicated to the refractory materials research and development, production, trade and engineering. Our company owns a professional technical research and development team that has been engaged in the refractory materials for decade years, owns advanced production equipments and testing equipment with the excellent marketing team. Our company has a sound management system for the market development and after-sale service. We will, as always, insist on the principle of quality first, customer first, putting quality and customers first, wholeheartedly provide the best quality......
