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High Alumina Bubble Heat Insulating Bricks, Bubble K23 Insulating Refractory Brick, Industrial Soft Fire Brick

Categories Insulating Fire Brick
Brand Name: Janincere
Model Number: LW001
Certification: ISO19001, ISO14001
Place of Origin: Xinmi City, Henan Province, China
MOQ: 350 pieces
Price: $4.2-$5.6 per piece
Payment Terms: L/C, D/P, T/T, Western Union
Supply Ability: 2000 ton high alumina bubble bricks per month
Delivery Time: 30-45 days after received the deposit
Packaging Details: Wooden pallet+ paper layer+ plastic film+strap
Al2O3: ≥85%
SiO2: ≤15%
Fe2O3: ≤0.2%
Maximum Service Temperature: 1680
Bulk Density: 1.4-1.7 g/cm3
Cold Crushing Strength: ≥12 Mpa
Color: Light Grey
Size: 230*114*65 mm or according to your request
Application: High temperature equipment
Feature: low thermal conductivity and good performance of insulation
Keyword: Lightweight Insulating Fire Brick
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High Alumina Bubble Heat Insulating Bricks, Bubble K23 Insulating Refractory Brick, Industrial Soft Fire Brick

High Alumina Bubble Heat Insulating Bricks, Bubble K23 Insulating Refractory Brick, Industrial Soft Fire Brick

Introduction of High Alumina Bubble Brick:

High alumina bubble brick is made of alumina hollow ball as raw material, high-performance powder as additive, and organic material as the temporary binding agent, after mixing, drying, forming, firing at high temperature in shuttle kiln, the whole process is finished.

Features of High Alumina Bubble Brick:

  1. Excellent thermal shock resistance, low thermal conductivity and good performance of insulation.
  2. High temperature resistance as Al2O3 content is≥85%.
  3. Reduce furnace weight as there are amount of closed pores in alumina bubble brick.
  4. Strong ability to resist erosion of gas and slag.
  5. Direct contact with flame.

Technical Index:

ItemAlumina Bubble Brick
Al2O3 %≥85≥90≥99
SiO2 %≤15≤8≤0.2
Fe2O3 %≤0.2≤0.2≤0.2
Maximum Service Temperature ℃168017001800
Bulk Density g/cm31.4-1.71.4-1.71.4-1.7
Cold Crushing Strength Mpa≥12≥10≥9
Refractoriness Under Load (0.1Mpa, 0.6%) ℃≥1650≥1700≥1700
Permanent Linear Change (1600℃*3h) %±0.3±0.3±0.3

Thermal Expansion Coefficient

(*10-6,room temperature-1300℃) %

Thermal Conductivity Coefficient
( Average 800℃) w/m.k

Product Photo:


High Alumina Bubble Brick is widely used in carbon black furnace, gasifier, gas furnace, hydrogen furnace, and so on.

Packaging & Shipping:
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

3. Our packaging is as per customer’s request
4. Normal goods delivered by sea transport
5. Sample shipping by express
6. We will ship and delivery goods timely, quality and quantity guaranteed, and also in accordance
with the contract and customer's requirement completely.


Q1: Can we visit your factory?

Of course, welcome at any time and we will be honored to have a customer and friend.

Q2: When can I get the price?

We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price, please call us or tell us in your email so that we will regard your inquiry priority.

Q3: How do you guarantee quality?

For each production processing, we have complete QC system for the chemical composition and Physical properties. After production, all the goods will be tested, and the quality certificate will be shipped along with goods.

Q4: Do you have any experiences of export?

Yes, and now we have gained a global sales network reaching Russia, Korea, Vietnam, Pakistan, Bulgaria, French, India, Congo, Angola, South Africa, and so on.

Q5: Do you provide free samples?

Yes, we can provide a free sample for testing, if we have sample in stock. The quantity based on the material type. The buyer should bear all the shipping costs.

Please just spare your precious 30 seconds and you can eliminate your doubts.
No. 1: We are manufacturer of refractory materials, so we can provide you professional solutions about your problems.
No. 2: We have been built for more than 30 years. Over the past 30 years, we have accumulated a lot of customers all over the world.
No. 3: We have good connection with shipping company and forwarders, as well as the local customs and port authority. It ensures that we can deliver on time.
No. 4: We maintain a highly conscientious and professional attitude to solve your problems.
No. 5: We can provide you the best price, and what you will get from us is our best effort in service and the hospitality that you are willing to become our friend.

Quality High Alumina Bubble Heat Insulating Bricks, Bubble K23 Insulating Refractory Brick, Industrial Soft Fire Brick for sale
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