Clay products
Refractory clay and semi-acid products are generally used in large-scale production for laying various thermal equipment with the maximum application temperature of 1250 ℃ - 1400 ℃ (GB 390-96), clay products are used in rotary kilns lining of cement and other industries (GB 21436-2004), and refractory clay products are used for laying air heaters, hot air ducts, fittings and tuyere equipment of blast furnaces. (GB 20901-75).
Category：
Description
| Index item | Specification standard | ||||||
| SHAK | SHA | SHB | SHV | SHUS | PB | PB | |
| GB code | 390-96 | ||||||
| Mass fraction,% | |||||||
| Al2O3, ＞ | 33 | 30 | 28 | 28 | 28 | - | - |
| Al2O3 | - | - | - | - | - | 14-28 | 14-28 |
| SiO2 | - | - | - | - | - | 65-85 | 65-85 |
| Refractoriness，℃，＞ | 1730 | 1690 | 1650 | 1630 | 1580 | 1670 | 1580 |
| Linear variation shrinkage or increase，%，＜， Temperature，℃ | 0,5 | - | - | - | - | - | - |
| 1400 | - | - | - | - | - | - | |
|
For grouping products: Ⅰ |
23 | 24 | 24 | - | 30 | 24 | - |
| Ⅱ | - | 30 | 30 | - | - | 30 | - |
| Compressive strength，N/мм2,＞ | |||||||
|
For grouping products: Ⅰ |
23 | 20 | - | 20 | 12 | 20 | 15 |
| Ⅱ | - | 15 | - | 13 | - | - | 13 |
| Initial temperature，℃，＞ | 1320 | 1300 | - | - | - | - | - |
| Usage | For laying various thermal equipment with the maximum application temperature of 1250 ℃ - 1400 ℃ | ||||||
| Index item | Specification standard | |||
| SHCU | SHCS | PC | SHCL-1.3 | |
| GB code | 21436-2004 | |||
| Mass fraction,% | ||||
| Al2O3, ＞ | 32 | 28 | 28 | 28 |
| SiO2 | - | - | 65-85 | - |
| Refractoriness，℃，＞ | 1710 | 1670 | 1670 | 1670 |
| Initial temperature，℃，＞ | 1370 | 1300 | 1350 | - |
| Apparent porosity，%，＜ | 20 | 26 | 26 | - |
| Volume density，g/см3,＜ | - | - | - | 1,3 |
| Compressive strength，N/мм2, ＞ | 25 | 18 | 18 | 4,5 |
| Thermal stability, thermal cycle,＞ | 4 | 3 | - | - |
| Size change，＜, temperature，℃ | ||||
| 1400 | 0,3 | 0,7 | - | - |
| 1350 | - | - | 0,5 | 1,0<
Keywords:
clay
for
28
temperature
1670
and
24
walls
30
laying
Online Inquiry 
12/F World Trade Center Zhongshan District Dalian China 116001 
+86-411-83623330 |
