High-Quality Fused Cast Mullite Block Suppliers in China - Durable Refractory Factory for High-Temperature Applications
RTK-FM/ZM fused cast zirconia mullite block are made from high-quality mullite clinker, imported bauxite and zircon sand by melting and casting at high temperature in electric arc furnace. It is mainly used for wear-resistant and high temperature resistant parts, such as skid roll bricks of metallurgical push-type furnace or tapping platform (tapping spout) of walking beam heating furnace and lining of garbage incinerator.
We have passed ISO9001, ISO14001, and ISO45001 management system certification. At the same time, our company has established an intelligent management platform to conduct digital collection and analysis of the production process from raw materials to finished products, and have steadily improved the quality stability and traceability of products.
We use the most advanced flaw detection radar GPR of Laurel (USA) Instrument Co., Ltd. to detect the internal defects of blocks. The GPR is equipped with a 2.7G antenna, a positioning system, a touch screen operation interface and six control buttons. It can detect the internal cavities of inorganic non-metallic materials and display the detection results in images. The results are intuitive and efficient.
We establish a standardized, independent and efficient quality assurance system according to the requirements of modern enterprises. We rely on advanced analytical instruments and testing equipment to monitor the whole process of products, provide scientific and effective theoretical data for production, and provide users with high-level quality supervision services.
| Chemical Composition | FM Typical Value (%) | ZM Typical Value (%) |
|---|---|---|
| SiO2 | 17.0 | 16.0 |
| Al2O3 | 77.5 | 75.0 |
| ZrO2 | 2.5 | 5.0 |
| Fe2O3 | 2.0 | 2.0 |
| TiO2 + CaO + MgO + Na2O + K2O | 1.0 | 2.0 |
| Physical Property | FM Value | ZM Value |
|---|---|---|
| Bulk density (dense part) g/cm3 | 3.2 | 3.2 |
| Bending strength at room temperature MPa | 140 | 140 |
| High temperature bending strength MPa (1350°C) | 100 | 100 |
| Thermal conductivity (1300°C) W/m·k | 4.6 | 5.4 |
| Thermal linear expansion (1300°C) | 0.8 | 0.9 |
| Calculate Specific Gravity | ||
| Ordinary casting / inclined casting g/cm3 | 3.0 | 3.0 |
| Quasi-non shrinkage casting g/cm3 | 3.1 | 3.1 |
| Non shrinkage casting g/cm3 | 3.2 | 3.2 |
What raw materials are used to produce RTK-FM/ZM fused cast zirconia mullite blocks?
These blocks are manufactured by melting and casting high-quality mullite clinker, imported bauxite, and zircon sand at extremely high temperatures in an electric arc furnace.
What are the primary applications of these zirconia mullite blocks?
They are highly recommended for wear-resistant and high-temperature resistant applications, such as skid roll bricks in metallurgical push-type furnaces, tapping platforms (tapping spouts) in walking beam heating furnaces, and internal linings of garbage incinerators.
What quality management systems and certifications do you have?
Our manufacturing facilities are fully certified under ISO9001 (Quality Management), ISO14001 (Environmental Management), and ISO45001 (Occupational Health and Safety Management) systems, supported by an intelligent digital traceability platform.
How do you detect internal defects and cavities in the blocks?
We utilize the advanced Ground Penetrating Radar (GPR) from Laurel (USA) Instrument Co., Ltd. Equipped with a 2.7G antenna and positioning system, it scans and displays high-resolution, intuitive images of the block's internal structure.
What is the difference in ZrO2 content between the FM and ZM typical values?
The typical value of ZrO2 (Zirconia) content is 2.5% for the FM blocks and 5.0% for the ZM blocks.
What is the thermal conductivity of FM and ZM blocks at 1300°C?
At a temperature of 1300°C, the thermal conductivity is 4.6 W/m·k for FM blocks and 5.4 W/m·k for ZM blocks.