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The JM30 insulation brick is made of high-purity refractory clay with progressively increasing alumina content and carefully saturated with organic filler before being burned during production to form a homogeneous and controlled porous structure. All six walls of each brick were machined to achieve the required tolerances.
2.Advantages of JM30 insulation brick
1. Low thermal conductivity: It has good thermal insulation effect and can make the furnace wall thinner.
2. Low heat capacity: due to its light weight and low thermal conductivity, light mullite brick series products store little heat energy, which has obvious energy-saving effect in intermittent operation kilns.
3. Low impurity content: it has very low iron and alkali metal low melt content, so the refractoriness is high. The high aluminum content makes it maintain good performance in reducing atmosphere.
4. High thermal compressive strength.
5. Accurate overall dimensions: accelerate the masonry speed, and the brick joints are thin and uniform. Ensure high strength and stability of masonry.
6. It can be processed into special shape to reduce the number of blocks and masonry joints.
3. Parameters of JM30 insulation brick
| Index | Volume Density | Reheating Linear Change | Cold Compression Strength | Bending Strength At Normal Temperature | Thermal Conductivity | Al2O3 | SiO2 | Fe2O3 | |
| – | – | g/cm3 | 1400℃*12h,% | Mpa | Mpa | 350℃w/m·k | % | % | % |
| JM30 | A | 1 | -0.8 | 3 | 1.8 | 0.4 | 72 | 26 | 0.5 |
| JM30 | B | 1.1 | -0.7 | 3.5 | 1.9 | 0.43 | 72 | 26 | 0.5 |
| JM32 | A | 1.1 | -0.8 | 3.6 | 1.9 | 0.43 | 75 | 23 | 0.4 |
| JM32 | B | 1.2 | -0.7 | 3.8 | 2 | 0.46 | 75 | 23 | 0.4 |
4. Application of JM30 insulation brick
The JM30 insulation brick can be used as a first refractory lining or backside insulation behind all other refractory layers in furnaces, ovens, fireways, refining chambers and heating furnaces, regenerators, natural gas production plants and pipelines, prospective furnaces, stress relief furnaces, reactor chambers and similar high temperature industrial installations.
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