Henan Hongtai Kiln Refractory Co.,Ltd. |
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China refractory brick manufacturer light weight silica insulating fire brick used in the top of steel rolling heating furnace
Light weight silica insulating fire bricks are also called silica insulation bricks. Lightweight refractory material with silicon dioxide above 91% and bulk density below 1.2g/cm3. The refractoriness and softening temperature under load are not much different from ordinary silica bricks with the same composition. However, due to the many pores, the compressive strength, slag resistance, and corrosion resistance are not as good as ordinary silica bricks, but the thermal shock resistance has been improved.
Using finely divided silica as raw material, the critical particle size is usually no more than 1mm, and the particles smaller than 0.5mm are no less than 90%. It is prepared by adding flammable substances to the ingredients or adopting the gas generation method to form a porous structure and firing. Can also be made into unburnt products. It is mainly used for all parts of the kiln that requires heat insulation or lightening of its own weight without direct contact with the melt, free from corrosive gas, and not subject to sudden temperature changes. It is used at high temperature and cannot be in contact with alkaline refractory materials. According to different materials, the highest operating temperature is 1200~1550℃.
Light weight silica insulating fire bricks have the
characteristics of low thermal conductivity, high load softening
temperature, small residual expansion, and excellent reburning line
change performance. They are suitable for industrial furnaces such
as coke ovens, hot blast furnaces, glass furnaces and carbon
furnaces. It is mainly used for the heat insulation layer and
working layer of thermal equipment, and can be used for the heat
insulation layer of various high temperature kiln equipment under
high temperature conditions (≤1500℃) without contact with molten
slag. This product is suitable for the heat insulation material of
the silica brick lining of the high temperature hot blast stove of
the large blast furnace and the heat insulation of the silica brick
masonry of the glass furnace.
General light silica bricks can be divided into two levels: the
first grade can be used in the top of the steel rolling heating
furnace and the roof of the silicate industrial kiln, and can be
directly in contact with the flame; the second grade is used in the
general industrial kiln Insulation. Applicable to: industrial
furnaces such as coke ovens, hot blast furnaces, glass melting
furnaces and carbon calciners. Generally, the bulk density of
silicon heat insulation refractory bricks is 0.9-1.1g/cm3, the
compressive strength is 2.0-5.9MPa, and the thermal conductivity is
0.35-0.42W/(m·K). It has excellent fire resistance, its softening
temperature under load is close to 1620℃ for dense silica bricks,
with only a small residual expansion, and its thermal stability is
better than dense silica bricks. Therefore, siliceous
heat-insulating refractory bricks can be used for a long time under
high temperature conditions (1500-1550°C) without contact with
molten slag, but they are especially suitable for high-temperature
hot-blast furnaces of large blast furnaces. Thermal insulation of
silica brick gas.
China refractory brick manufacturer light weight silica insulating fire brick used in the top of steel rolling heating furnace
Items | GGR-1.0 | GGR-1.10 | GGR-1.15 | GGR-1.20 | |
SiO2 % ≥ | 91 | 91 | 91 | 91 | |
Bulk density g/cm3 | 1.0 | 1.10 | 1.15 | 1.20 | |
Cold crushing Strength Mpa | 2 | 3 | 5 | 5 | |
Refractoriness Under Load 0.1Mpa ≥ ℃ | 1400 | 1420 | 1500 | 1520 | |
Liner change on re-heating rate | 1550℃*2h | -- | -- | 0.5 | 0.5 |
1450℃*2h | 0.5 | 0.5 | -- | -- | |
Thermal Conductivity 350 ℃ W/(m.k) | 0.55 | 0.60 | 0.65 | 0.70 |
Straight | Split | Arch | Wedge | Tile | Other Shape |
L×W×H(mm) 230×114×65 230×114×75 | L×W×H (mm) 230×114×25 230×114×32 230×114×37 230×114×50 | L×W×H/h(mm) 230×114×65/45 230×114×65/55 230×114×75/45 230×114×75/55 230×114×75/65 | L×W×H/h (mm) 230×114×65/45 230×114×65/55 220×114×75/45 220×114×75/55 220×114×75/65 | L×W×H (mm) 230×230×38 230×230×50 230×230×65 230×230×75 | Key brick, Skew brick, Soap, Checker, Neck, Taper, |
We also can make brick according to customers' drawing and requirements. |
China refractory brick manufacturer light weight silica insulating fire brick used in the top of steel rolling heating furnace
1.on wooden pallets with plastic cover: wooden pallet size :930*930
or 1000*1000mm,
2.Load weight of each pallet: 1.5-2.0 tons,
Shipping of light weight silica insulating fire brick
1.Our packaging is as per customer’s request
2.Normal goods delivered by sea transport
3.Sample shipping by express
4.We will shipping and delivery goods timely, quality and quantity
guaranteed, and also in accordance with the contract and customer's
requirement completely.
Delivery:
15-30 days working day for large quantity. The shipment we will
arrange as soon as possible. Of course, if it is a custom products,
the shipping time will delay.
Sample:
Usually by EMS, DHL, UPS, TNT, FedEx. Anyway you like. Bulk order: Usually by sea.
Payment:
It can be through T/T, L/C at sight. The specific terms determined
according to the quantity of the goods, etc.
Your inquiry related to our product & price will be replied
within 24 hours.
Export:
Our products have been exported to many countries: Australia,
Chile, USA, Russia, UK, Indonesia, etc., good quality have be
approved by our clients.
Hongtai Kiln Refractory has professional sales and after-sale service team who provide customers all-around service about product selection, transportation, installation and operation technology training etc. Now we have established cooperation relationship with many science and research units and our products have been sold to Vietnam, Thailand, Malaysia, South Korea, Pakistan, Kazakhstan, India, Japan, Indonesia, Germany, Italy, Mongolia, Russia, Argentina, colombia, Eygpt, South Africa and etc.
We has over 20 years experience on producting the light weight silica
insulating fire brick.
Payment Guarantee: If couldn't trust us at first order, could use trade Assurance.
Jerry Li
Cell&WhatsApp: 0086-13373957739
Email: jerry(at)firebricks-supplies.com