久久综合九色综合97

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thermal insulation lightweight silica brick

 
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Description

Silica brick is made of quartz stone material, the content of SiO2 is above 96%,it has good resistance to acid slag and good heat conductivity. And the refractoriness is 1690~1710°C,RUL is beyond 1680°C.


SiO2 has different types of crystals in different temperatures, and the transform between the crystals will cause the change of the bulk. So there is a close contact between the changes of SiO2 crystals and the produce ,performance and usage of silica bricks. During the heating, there will be changes of the bulk ,and cristobalite changes most, then quartz, phosphorus quartz is the slowest of all and it also has good heatconductivity.Coke oven should use the silica brick with small true density. And the phosphorus quartz is better than others.

 

Silica lightweight insulation bricks with an SiO2 content of ≥ 91 % are manufactured with a classified raw density in the range of 0.5 g/cm3to 1.25 g/cm3 by the use of selected SiO2 rich raw materials and pore formers and by using the so called dry pressing procedure. Silica light bricks are classifed in group 30 by ASTM standards.


Silica refractory brick are mainly used for coke oven, hot blast stove, acid steel making furnace and glass melting furnace. The products can be manufactured according to customers’ different requirements.

Characteristic

 

Feature of  lightweight silicon silica brick : 
1. Low bulk density, low thermal conductivity, good thermal insulation performance.
2. Refractory category allow direct contact of fire, suitable offer various atmosphere
3. Good integrity with furnace lining, long service life, easy operation, could be shaped freely
4. Can be used in various kilns because of its cheapness and general tray package.

Applications of lightweight silicon insulation bricks:
1,Coke oven
2,Hot blast stove
3,Glass tank
4,Other industrial kilns

Specification

 

Light weight brick chemical and physical index:

 

Item

QG-1.0

QG-1.1

QG-1.2

SiO2 %

91

91

91

Refractoriness°C

1680

1680

1670

0.2Mpa Refractoriness Under Load °C

1480

1560

1560

Cold Crushing Strength Mpa

3.5

3.5

3.5

True Density g/cm3

2.39

2.39

2.39

Bulk Density g/cm3

1.0

1.1

1.2

Permanent Linear Change On Reheating(%)1550°CX2h

0~+0.5

1450°CX2h

0~+0.5

0~+0.5

Thermal Conductivity (W/MK) 350°C

0.55

0.60

0.65


Production Equipment

Production capacity: Our factory actively response to government environmental protection policy, we designed and built the fully automatic controlled high temperature gas tunnel kiln (1700℃), and got capacity of annual output 70,000 tons of high quality refractory products.

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Packing Details
Packing details:

★Bricks: Fumigated wooden pallet with log paperboard covered and stainless steel band strapping, the whole outside is wrapped with thermoplastic film. Or carton packaging.

★Wooden pallet size: usually 92*92cm (standard brick)

★Castable: Ton bag with rain film and 25kg bags inside

★Or according to customer’s requirements

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Transportation

★Port of dispatch: Tianjin port; Qingdao port

★Delivery time: According to customer’s demand or two sides negotiate

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Our Services

We provide you 

★Timely response: Timely response to your inquiry within 24 hours and provide solution. 

★Competitive Price: Make the products competitive in your market. 

★Free sample: Free sample are offered, trial order are accepted for quality evaluation. 

★Strict quality control: We set Quality Management System, from the raw material to finished products, produce high quality products according to chemical & physical specifications strictly to satisfy customers’ needs.

★Fast delivery time: Within 3-30 days according to your quantity after receiving your advance payment. 

★ Professional services: Provide pictures from order to delivery. Inspect report by our country’s designated authority and oversea services if necessary.

We are here for you!

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Certification:  (ISO 9001:2015)

JUNDAO (HENAN) NEW MATERIALS CO.,LTD.

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久久综合九色综合97