Thermal Insulation lightweight Refractory Silica Insulating Fire Brick

Lightweight silica brick,also known as Silica insulating brick, is kind of lightweight refractory material which content more than 91% of SiO2, with bulk density ≤ 1.2g / cm3.

Lightweight silica brick’s refractoriness and load softening temperature are closed with ordinary silica brick with same composition. However, due to a lot of stomata, the pressure strength, slag resistance, corrosion resistance of lightweight silica brick are not well as ordinary silicon brick, but its thermal shock resistance are getting improved.

Features of silica insulating brick:

1. low heat conductivity, good thermal insulation effect.

2. low density, high compressive strength.

3. high temperature resistant, fire resistant insulation.

4. acid resistance, good corrosion resistance.

5. anti permeability, anti corrosion.

Advantage of silica insulating brick:

Silica insulating brick with silica insulating refractory products for SiO2 content of raw material of not less than 91%. The main mineral is composed of quartz and quartz.

With low density, high compressive strength, good heat insulation effect, low thermal conductivity, high temperature resistant, acid (HF), anti permeability and heat insulation. Is a kind of very good resistance to acid and heat insulation products.

Thermal Insulation lightweight Refractory Silica Insulating Fire Brick

physical and chemical indicators of Lightweight silicate brick / silica insulation brick refer to the following:

Thermal Insulation lightweight Refractory Silica Insulating Fire Brick

Lightweight silica brick is made by using crushed silica as a raw material, of which the critical particle size is usually not more than 1mm, and the content of less than 0.5mm particles are not less than 90%. It is fired through adding flammable substances to the ingredients or use gas generation method gas to form a porous structure. The brick can also be made into non-burning products. When Used at high temperatures, it can not contact with alkaline refractory. According to different materials, the maximum temperature can be 1200 ~ 1550 ℃.

Application of lightweight silicon brick:

1. Glass kiln used more

2. Mainly used in various parts where required to insulation or reduce self weight without direct contact with the melt, not affected by aggressive gas and do not suffer from temperature change.

Refractory high alumina brick Used in Furnaces

1)Raw material to factory→checkout→burdening→stirring→mixing→taking out the raw material,
2)Crushing→Mixing→Shaping→Drying→Firing→Inspection→Packaging and Shipment.
2.Quality Assurance
1)Going out the furnace→checkout→packing→qualified product→putting in storage→sale,
2)The process from raw to product are strictly tested by equipment.
1.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.
2.Inspection and control of the process: during the production,every brick will be weighed twice strictly to reduce the error of weight .
3.Quality audit by quality management: inspection of product standardization of quality of each product by process control and experimentation, taking corrective measures timely whenever deviations are noted.
4.Before delivery, the inspectors will inspect the size,appearance, physical and chemical properties of silica insulating brick again in factory.