Where to buy silica refractory brick?

Gongyi Yuying Refractories Co., Ltd. produces siliceous refractory bricks

 Silica thermal insulation refractory bricks are made of silica as the main raw material, silicon dioxide: the content is not less than 91%. In addition to thermal insulation properties, silica brick thermal insulation refractory bricks maintain the characteristics of silica bricks to a large extent. The load softening start temperature is high, and the volume expands slightly during the heating process, which enhances the integrity of the furnace. The production of siliceous heat-insulating refractory bricks is based on finely crushed silica as raw material, adding part of waste silica bricks or waste siliceous heat-insulating refractory brick powder, mineralizers and firing additives. According to a certain ratio, add water to the mixer to form a slurry. After mechanical or manual molding, the residual moisture of the brick is less than 0. Only 5% can be loaded into the kiln. In order to prevent the product from cracking due to the violent volume expansion caused by the SiO2: polycrystalline transformation, it is required to increase and decrease the temperature slowly during sintering.

The performance of the qg-1.2 grade silica thermal insulation lining brick for industrial protection specified by the Ministry of Metallurgical Industry Standard yb386-63 is: the normal temperature lining strength is not less than 3.43mpa, the bulk density is not more than 1.29gcm3, the fire resistance is not less than 1670c, and the load softening starts. The temperature is not lower than 1560℃ and the SiO2 content is not lower than 91% under the pressure of 0.98mpa. This product is suitable for industrial furnace linings whose working temperature is lower than 155℃ and does not directly contact high-temperature molten materials and corrosive gases or as a thermal insulation layer. Because silica fume is extremely harmful to the human body, the production process of silica fume thermal insulation refractory bricks is more complicated than that of clay and high alumina thermal insulation refractory bricks, and it accounts for a small proportion of the total output of thermal insulation refractories.

The silicon heat insulating refractory produced by Yuying Refractories Company has the characteristics of low thermal conductivity, high load softening temperature, small residual expansion, and good reburning line change performance. Suitable for industrial furnaces such as coke ovens, hot blast furnaces, glass furnaces, carbon calciners, etc. It is mainly used for the insulation layer and working layer of thermal equipment, and can be used for the insulation layer of various high temperature kiln equipment under high temperature conditions (≤ 1500℃). This product is suitable for large blast furnace high temperature hot blast stove silica brick lining insulation material and glass furnace silica bricks Masonry insulation