K28/JM28 Mullite Insulation Brick
1.Light weight brick good for energy conservation, 2.Low thermal conductivity and excellent heat resistance, 3.Good volume stability at high temperature, 4.Low heat storage, high hot compressive strength, 5.Resistance to erosion, resistance to abrasion, 6.Accurate dimension, designed packaging, 7.High alumina, low iron and alkali flux content,
Brief Introduction
K28/JM28 Insulation Bricks are made from high purity materials by unique technics, so they have a lot of advantages such as stable volume, excellent thermal stability, high intensity, and low thermal conductivity. They are an ideal kind of energy-conserving products, which can be widely used as linings or as thermal preservations layes in various industrial furnaces and kilns in metallurgical industry, ceramic industry, chemical industry and machinery industry.
Technical Datas
| Brand | JM23/K23 | JM26/K26 | JM28/K28 | JM30/K30 | JM32/K32 | |
| USA Brand | IFB2300 | IFB2600 | IFB2800 | IFB3000 | IFB3200 | |
| Classification Temperature (℃) | 1260 | 1430 | 1540 | 1650 | 1760 | |
| Bulk Density (g/cm3) | 0.55-0.62 | 0.78-0.8 | 0.88 | 1.03 | 1.25 | |
| Cold Crushing Strength (Mpa) | 1.2 | 1.6 | 2.1 | 2.5 | 3.5 | |
| Modulus of Rupture (Mpa) | 0.9 | 1.4 | 1.6 | 2.1 | 2.1 | |
| Reheating Linear Change (%) | 1230℃ | 1400℃ | 1510℃ | 1620℃ | 1730℃ | |
| CT-30 ℃X 8H | -0.5 | -0.5 | -0.5 | -0.9 | -0.9 | |
| Thermal Expansion 1000℃（%） | 0.5 | 0.7 | 0.8 | 0.9 | 1.1 | |
| Thermal conductivity（W/m.k） | 400℃ | 0.14 | 0.27 | 0.32 | 0.41 | 0.49 |
| 600℃ | 0.16 | 0.29 | 0.34 | 0.43 | 0.5 | |
| 800℃ | 0.18 | 0.31 | 0.36 | 0.44 | 0.51 | |
| 1000℃ | 0.2 | 0.33 | 0.38 | 0.45 | 0.53 | |
| Al2O3 (%) | 37 | 54 | 64 | 72 | 77 | |
| Fe2O3 (%) | 1 | 0.9 | 0.8 | 0.7 | 0.5 | |
Application
1. Glass industries iron & steel industries
2. Ceramics industries non-ferrous metals industries
3. Electrolytic Aluminum industries power generation industries
4. Heat surface fireproof lining other fire-proof back lining
5. Aluminum electrolysis industry: aluminum reduction cell, etc
6. Other industries: tunnel kiln, shuttle kiln, etc
