65% Al2O3 min High Alumina Insulating Fire Brick

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500 m.t.
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1000 m.t./month

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Product Description:


1.65% Al2O3 min;
2. Refractoriness: 1790C min;
3.For steelmaking furnaces;
4.ISO 9001 Certificate;
5.Custom shape.

High alumina insulating fire brick is a kind of insulation material adopting organic matter as ignition loss substance in order to increase the porosity of refractory, which has such advantages as high porosity, small volume density, good insulation effect, high mechanical intensity, small thermal conductivity and long service life. For various industrial kilns & furnaces, it is a kind of essential refractory for energy saving and temperature preservation.

This series of High Alumina Insulating Fire Brick are made of selected high alumina bauxite, kaolin caly, hollow microsphere as the mian material.By shaping at high pressure and sintering at high temperature. 


Hihg Alumina brick


Clay brick
Phosphoric acid dipping clay brick
GL-65 GL- 55GL- 48ZGN-42 ZGN-42
Chemical Compositions ( %)  ≥Al2O3 6555484242
P2O5 -----7
Refractoriness ℃ 1790 1770 1750  17501750-
Apparent Porosity
1919 18 15 1614
Alkali resistance
(strength degradation)%≤
0.2MPaRefractoriness under load,℃≥ 1500 1480 1450 1450 1430 1450
58.8 49 49 58.8 49 60
Dead burnt linear change(%)≤ 1450℃×2h 0/-0.2 0/-0.2 0/-0.30/-0.2
1500℃×2h 0/-0.2

Starting from the raw material into factory, Every production process of  high alumina insulating fire bricks should through strict quality control, both the raw materials and finished products should be inspected time after time, to esure that each product to satisfy our customers, because of advanced automatic batching system and 2500 tons automatic hydraulic machine in the world were introduced, then a new line of the ladle fire bricks and other styling refractory products with a superior quality was put into production.


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Q:What are the types of building blocks?
Ordinary housing: building brick (clay brick), and non sintered brick (sand lime brick, fly ash brick, cement brick, etc.)
Q:What is the exterior wall insulation material made of graphite?
Graphite polystyrene (SEPS) containing graphite particles special, can be like a mirror which contains thermal radiation, and can greatly enhance the heat insulation performance of the infrared absorption, thereby reducing the heat loss of housing. Its insulation capacity is at least 30% higher than the average EPS, helping to increase energy efficiency and reduce carbon dioxide emissions.
Q:Are there any special requirements for the use of raw materials in thermal insulation brick production equipment? What about the raw materials?
Pulping, pouring system, but if you want to invest in you know more about this knowledge, according to your production decision, cutting system and steam curing system, mainly for operators, grinding, grinding system, production control system uses two typical control methods.
Q:Is the quality of brick made of small-sized self insulation block equipment the same as that of large block brick equipment?
In fact, brick and tile production is only a different production, the quality of brick produced is the same, from the silver horse experience
Q:Which kind of balcony heat preservation material is better?
New inorganic insulation material, this material thickness is thin, in 2-3 centimeters line, direct smear on the top of the house, without auxiliary materials, the price is higher than rock wool, aluminum silicate cotton.
Q:What are the improvements and improvements during the trial production of insulating bricks?
Insulation brick seven characteristics: insulation, heat insulation: effectively reduce energy consumption.Fire prevention: up to national standard or class A.Clean and environmental protection: no two pollution will be caused by air.
Q:What is the bulk density of the sintered bricks?
Sludge brick density is about 1000Kg/m or so fand.
Q:Is it necessary to abolish the technical regulations for the construction of self thermal insulation masonry building with sludge sintering insulation bricks?
Silt sintering brick insulation brick is made from river mud, city sludge, mud as the main raw materials, added according to a certain proportion of siliceous inorganic binder after aging, extrusion blank, blank by cutting, drying, sintering and extrusion molding machine. The utility model has the advantages of energy saving, resource saving, favorable for developing circular economy and comprehensive utilization of resources, high micropore rate, good product heat insulation performance and heat insulation performance, etc..
Q:What is composite sintering insulation bricks?
Taking the Yangtze River, lake and silt as the main raw materials, the performance indexes of roasting are in line with the technical specifications and technical requirements of the building blocks, referred to as insulating bricks.
Q:What materials are used for roof insulation
The other one is inorganic insulation materials, such as Portland, rare earth insulation, the thickness should be 5 cm or more, up to the high cost of auxiliary materials of construction, to reinforce, new inorganic insulation material, the material thickness, on the line of 2-3 cm, direct smear on the top of the house, without auxiliary material, than the price of wool, high aluminum silicate cotton.

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