Light Silica Brick

Lightweight Silica Brick Introduction
 
Light silica brick as a kind of hot sales refractory bricks for furnace application in Rongsheng factory manufacturing with widely used in burning kiln (reverse kiln) kiln top glass kiln roof, regenerator wall top, thermal insulation material, with high refractoriness using lightweight silica brick. Insulation silica firebrick have good properties of high refractoriness, high temperature resistance, gas corrosion resistance and good thermal insulation performance. There are lightweight silica insulation bricks for sale cheap in RS fire bricks company can provide standard size insulation silica brick specification and category as well as competitive price & high-grade quality lightweight silica insulation bricks products,other specification and size of light weight silica brick according to customer requirements,welcome to contact us or email us for free quote or price list.
 
Lightweight Silica Brick Definition
 
Lightweight silica brick is also known as silicon heat insulation brick, refers to a heat-insulating silicon refractory product with a SiO2 content of more than 90% and a bulk density of less than 1.2g/cm3. Lightweight silica bricks generally use quartzite or silica as the main raw materials, and flammable substances such as coke, anthracite, carbonized rice husk. Light weight silica bricks are added to the ingredients, insulation silica bricks are produced by a gas foaming method and fired at a high temperature.
 
Lightweight Silica Brick Features
 
1.Insulation silica firebrick have high refractoriness
2.Insulation silica firebrick have gas corrosion resistance
3.Insulation silica firebrick have high temperature resistance
4.Insulation silica firebrick have good thermal insulation performance
 
Lightweight Silica Brick Advantage
 
The advantage of lightweight silica bricks is that lightweight clay bricks are unmatched.
 
Lightweight silica bricks with a porosity of about 50% have a lower thermal conductivity than lightweight clay bricks.
 
The weight deformation temperature of lightweight silica bricks reaches 1620 ° C ~ 1640 ° C, while the lightweight clay bricks only have 1200 ~ 1300 ° C, the high temperature does not shrink, but expands at 1450 ° C (about less than 0.2%), the volume is stable, and the clay shrinks lightly. Large, easy to make the furnace lining split.
 
Lightweight silica bricks can be used for a long time in furnaces operating at temperatures between 1550 and 1600 °C, and can be used directly with the hot side of the furnace gas or on the roof of large spans. Where light clay bricks are not used Lightweight silica brick. ,
The use of silica bricks in the heating lining can shorten the heating period and reduce the fuel consumption by 35% compared with the use of lightweight clay bricks. The use of lightweight silica bricks in the kiln top of the firing kiln (reverse kiln) can extend the life of the furnace roof.
 
Lightweight Silica Brick Requirements
 
1. Silica insulation bricks is mainly used in various parts of the kiln that require heat insulation or light weight reduction without direct contact with the melt, no corrosive gas, no temperature change. Used at high temperatures, Light silica fire bricks cannot be in contact with alkaline refractories. According to different materials, the maximum operating temperature is 1200~1550°C.
 
2.Light refractory bricks have large porosity and loose structure, and cannot be used for direct contact with molten slag and liquid metal.
 
3.The lightweight silica insulation bricks mechanical strength is low and cannot be used for load-bearing structures.
 
4.The lightweight silica insulation bricks wear resistance is very poor, lightweight silica brick is not suitable for contact with the charge, severe wear parts.
 
Lightweight Silica Brick Specification
 

 
Lightweight Silica Brick Application
 
1.Light silica fire bricks application in glass kiln roof, regenerator wall top
 
2.Lightweight silica insulation bricks using in the insulation material for high temperature hot blast stove silicon brick lining for large blast furnace, thermal insulation layer for glass kiln silicon brick lining and thermal insulation for various industrial kiln, under high temperature conditions not in contact with slag For long-term use, the maximum use temperature of lightweight silica brick is between 1300-1550 °C.
 
Lightweight Silica Brick Price
 
The price of lightweight silica bricks is directly related to the physical and chemical indicators of the products. The lighter the proportion, the higher the price.
 
Lightweight Silica Brick Manufacturing Process
 
1.Raw Materials, Mineralizers and Binders
 
Two kinds of raw materials of quartz stone and waste silicon brick are used, crushed by a crusher and then pulverized into a barrel mill to prepare fine powder with a particle size of less than 0.88 mm.
 
Using iron scales with Fe2o3+Feo content greater than 95% and digestive stones with Cao content greater than 20% as mineral agents
 
2. Preparation of Mud
 
The formula of the mud is: quartz powder 65%, waste silicon brick powder is 35%, plus lime milk 14%, iron scale 1.5%, bone glue 0.5%, lignin sulfonate calcium solution 3%, water 45~48%.
 
3.Preparation of Foaming Agent
 
Light weight silica brick is prepared by using sodium rosin foaming agent and stabilizer and bone cement solution.
 
4.Casting and Drying
 
A bottomless wood mold having a size of 285*150*100 mm is placed on the porous aluminum strip or the ground, a waste newspaper is placed between the aluminum strip and the wooden mold, then the foam slurry is poured into the wooden mold. the surface is raised to avoid refracting the refractory brick after drying.
 
The light weight bricks were dried in a tunnel kiln dryer at a drying temperature of 45 ° C. After drying for 24 hours, the mold was released and placed sideways after 48 hours.
 
5. Firing and Finished Product Processing
 
The light refractory bricks are fired together with the silicon bricks in the tunnel kiln. The kiln is packed in his house and the bricks can be placed vertically. The firing system is the same as the firing system of ordinary silica bricks. The firing temperature is 1350 ° C ~ 1375 ° C.
 
Lightweight Silica Brick Using Precautions
 
1. The refractoriness of lightweight silica bricks is similar to that of ordinary silica bricks with the same composition. Because of the large number of pores, the compressive strength, slag resistance and corrosion resistance are not as good as ordinary silica bricks.
 
2. The temperature of the lightweight silica brick does not exceed 1550 ° C, does not directly contact the high temperature melt, does not directly contact the aggressive gas.
 
3. Lightweight silica bricks are divided into first class and second class. The first-grade products are used for the top of the rolling steel heating furnace and the industrial burning or kiln roof of the refractory brick, which can be directly in contact with the flame, and the second-grade product is used for the partition wall of the industrial thermal equipment.
 
Where to Buy the Light Silica Brick in RS Factory
 
1.Rongsheng refractory factory is a new type of private enterprise with flexible operation and high autonomy. RongSheng refractory brick export company has been engaged in refractory material industry for more than 20 years .Extensive cooperation with Luoyang Refractory Research Institute
 
2.Rongsheng firebricks manufacturer continues to innovate and develop new products, mainly The lightweight silica brick has high refractoriness and small bulk density,light weight silica fire brick is rich in raw materials and cheaper than refractory bricks,light silica brick is an ideal heat insulating material.
 
3.Light high silica refractory bricks has high compressive strength, good thermal shock resistance, reduced heat capacity of the furnace wall, high thermal efficiency of the furnace  Rongsheng refractory bricks company produces all kinds of light weight silica refractory bricks of various specifications and models all the year round. The standard specifications and common specifications are available for sale.Rongsheng firebricks company can customize all kinds of insulation silica light fire bricks.