Fused Cast Mullite Block (RTK-FM/ZM)

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. Fused cast zirconium mullite is a kind of high-performance refractory material, which is widely used in high temperature industrial fields, such as glass melting kiln, ceramic kiln and so on.

product details

Berif Introduction

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

CHEMICAL COMPOSITION	FM TYPICAL VALUE	ZM TYPICAL VALUE
SIO₂%	17	16.0
AI₂O₃%	77.5	75
ZrO₂	2.5	5.0
Fe₂O₃%	2.0	2.0
TiO₂＋CaO＋MgO＋Na₂O＋K₂O%	1.0	2.0

Physical property

PHYSICAL PROPERTY
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

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