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Low thermal conductivity mullite brick

The product uses high-quality mullite as the main raw material, the introduction of special additives in the production process, so that the products in the sintering process to form a large number of mullite mineral phase, the internal pores were spherical discontinuous state distribution, in the use of the process, the brick surface can form a glass body, effectively prevent the material alkali salt to the internal penetration of the product.

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Refractory materials for non-ferrous metals

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Product Introduction

The product uses high-quality mullite as the main raw material, and introduces special additives in the production process, so that a large number of mullite mineral phases are formed during the sintering process, and the internal pores are distributed in a spherical discontinuous state. During the use process, the brick surface can form a glass body, which effectively prevents the alkali salt in the material from penetrating into the product, and improves the alkali erosion resistance, wear resistance and thermal shock stability of the product, at the same time, it reduces the thermal conductivity and bulk density of the product, and is an ideal energy-saving and long-life product for non-ferrous metal smelting furnaces.

Brand Index	HTDDR-A	HTDDR-B
Al₂O₃ (%)	58~63	35～45
Fe₂O₃ (%)≤	1.5	2.0
Bulk density B · D(g/cm³)≥	2.50	2.10
The apparent porosity A · P(%)≤	16	18
Normal temperature compressive strength C · C · S(MPa) ≥	90	60
0.2MPa load softening temperature R · U · L(To6 ℃)≥	1500	1350
Thermal shock resistance T · S · R(1100 ℃ water cooling) times ≥	15	10
Thermal conductivity T · C(1000 ℃)[W/(m · K)]≤	1.3	1.2