Product Details:
Payment & Shipping Terms:
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Apparent Porosity:: | 20-22% | Cold Crushing Streng: | 60Mpa |
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Bulk Density:: | 2.4-2.6g/cm3 | Material:: | Alumina Block |
Model Number:: | Customer's Requirement | Refractoriness (Degree):: | 1580°< Refractoriness< 1770° |
Bulk Density:: | 1.9-2.15g/cm3 | ||
High Light: | lightweight fire brick,mullite insulating brick |
Fire Material Less Thermal Insulating Fire Clay Brick For Kilns
Item | Unit | Wear-resistant refractory brick | |||
NMZ-1 | NMZ-2 | NMZ-3 | |||
Chemical composition | Al2O3 | % | ≥85 | ≥75 | ≥65 |
SiO2 | % | ≤15 | ≤25 | ≤35 | |
Fe2O3 | % | <1.0 | ≤1.2 | ≤1.5 | |
Density | g/cm3 | ≥2.9 | ≥2.6 | ≥2.5 | |
Compressive strength (normal temperature) | Mpa | ≥100 | ≥85 | ≥70 | |
Apparent porosity | % | ≤18 | ≤20 | ≤21 | |
Abrasion resistance | cc | ≤6 | ≤7 | ≤8 | |
Refractoriness | ℃ | ≥1790 | ≥1790 | ≥1790 | |
Linear change on heating (900℃×3h) |
% | ≤0.05 | ≤0.1 | ≤0.1 | |
Thermal conductivity(350℃) | w/m.k | ≤1.8 | ≤1.8 | ≤1.5 | |
Thermal shock stability(1100℃Water cooling) | 20 | 20 | 20 |
Details:
1. Made by flint clay clinker and binder,through Crushing,Mixing,Shaping,Drying and high temperature Sintering.
2. Al2O3 content is 30%-48%,SiO2 content is 50%-65%,and a small number of alkali metals,alkaline earthmetal oxides TiO2,Fe2O3 etc.3.Working temperature:less than 1350°C.
Application:
It is widely used as a primary hot face refractory lining or as back-up insulation behind other refractory in furnace(such as carbon furnace, cracking furnace, heating furnace for oil refining, roller kiln, tunnel kiln.), flues, refining vessels, heaters, regenerators and similar high temperature industrial equipment.
Quality Assurance
The quality assurance system consists of the following steps:
a. Inspection and Control of incoming raw materials:According to the chemical content,raw materials are classified into different levels to ensure quality of brick first.
b. Inspection and control of the process:During the production,every brick will be weighed twice strictly to reduce the error of weight .
c. Inspection of product Standardization of quality of each product by process control and experimentation.
d. Taking corrective measures whenever deviations are noted.
e. Quality audit by quality management.Before delivery, the inspectors will inspect the size,appearance,physical and chemical properties of brick again in factory.
Contact Person: Pan Junhui
Tel: +86 15861509962
Fax: 86-0510-87441369