Fireclay Brick - Low Porosity

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CNBMis the specialized manufacturer and supplier of refractory in China, Our products mainly include refractory bricks, refractory castable, refractory precast shape, insulating brick etc. For refractory castable and precast shape they are very popular in the Europe, North American area.

Advantage:

This series of products are made of super calcined flint clay and calcined bauxite, with high pressure formed and high temperature sintered. Due to its low apparent porosity, strong resistance to erosion and high refractoriness under load, they are wildly used in various furnaces, especially suitable to the middle and low parts of regenerator in glass furnaces.

Features:

1. Low bulk density, low thermal conductivity, good thermal performance.

2. Refractory category allow direct contact of fire, suitable for various atmosphere

3. Good integrity with furnace lining, long service life, easy operation, could be shaped freely

Typical Applications:

1. Furnaces of metallurgy industry, heat treatment furnace

2. Furnaces of chemical industry and construction industry.

3. Furnace of incineration of garbage, recirculating fluidized bed furnace

Specification:

Low Porosity Fireclay Brick

Index Item	Low Porosity Fireclay Products
Index Item	DN-10	DN-12	DN-15	DN-18
AL2O3 % ≥	45	45	42	42
Fe2O3 % ≤	1.00	1.20	1.65	1.80
Bulk Density≥ g/cm3	2.40	2.35	2.30	2.25
A.P. % ≤	10	12	15	18
C.C.S (Mpa) ≥	70	65	60	48
Refractoriness ≥ °C	1750	1750	1750	1750
Reheating Linear Change%	1400°C×2h -0.1~+0.05	1400°C×2h -0.1~+0.05	1400°C×2h -0.2~0	1400°C×2h -0.4~0
0.2mpa Refractoriness under loadT0.6 ≥ °C	1500	1470	1450	1400

Q:The application of wasted refractory bricks: Refine waste copper, and waste refractory bricks can be used again, shoot two hawks with one arrow

Q:Are refractory bricks poisonous?: Zirconium minerals are often associated with other minerals in the mining, because the bricks are basically burned under more than 1 thousand degree. But some of the bricks contain heavy metal elements chromium. Some of the brick contains zirconium, the vast majority are very safe, and heavy metal elements have a certain toxicity, there are many kinds of refractory bricks that the nature is very stable, and the associated minerals are generally radioactive

Q:what type of refractory bricks does TZ-3 stands for ?: Standard brick

Q:What is common brick, firebrick and hollow brick?: Mainly used for smelting furnace and silica brick. There won't be problem by using scientific methods. Refractory brick----is refractory material with a certain shape and size. According to the preparation process, can be divided into firing brick. Similarly. Hollow bricks are very scientific in use. The hollow brick is just a kind of building material, belonging to the layman practices, hollow clay brick, unburned brick, shale hollow brick, electric melting brick (casting brick). High temperature building materials and structural materials used as building kilns and various thermal equipments, and refractory heat insulating bricks. Professional saying within the construction industry is that the argument of prohibiting the use of ordinary brickis is not scientific; according to the shape and size, can be classified into standard brick, construction, whether there is problem or not on cement and other related ingredients is related when it is under construction, the ability of 1, and at high temperature can withstand all kinds of physical and chemical changes and mechanical action, how to design. For example, refractory clay brick, strictly implement national standards to use qualified hollow brick. 8 earthquake, high alumina brick , magnesia brick, etc. due to the security risks. Hollow brick is classified into cement hollow brick, the house that built by cement hollow brick collapsed leading to many deaths, investigate that the foundation is suitable for the use of hollow brick or not, 580 degrees - 1. Will mislead the public, the high temperature of 770 degrees Celsius, must be corrected. There will be no problem if use scientifically according to strict procedures. There will be problem if the use of the solid brick is not strictly implement the state relevant standards. Also called refractory brick, special-shaped brick and etc. Refractory material made from refractory clay or other refractory raw materials

Q:What kinds of annealing furnace refractory bricks there are?: But the energy saving effect is good, but also can use lightwight heat insulating brick, but the price is higher than that of clay brick

Q:can diatomite?brick be used as thermal insulation refractory brick?: yes, it has good thermal insulation the raw material is cheap, diatomite?brick is a kind of thermal insulation refractory brick with good performance.

Q:What materials make of clay insulating fireclay brick?: The aluminium silicate refractories whose aluminium oxide content is 30% ~ 46% is called clay-based refractories. Clay products mainly consist of mullite, glass phase, cristobalite and quartz.

Q:Why is the brick instead of solid clay brick: Shale brick, shale hollow brick, shale brick, high insulation, water wall and other types of modular brick. Has the advantages of high strength, thermal insulation, heat insulation, sound insulation and other characteristics, in order to shale as the main building materials brick construction, is the biggest advantage of shale brick and clay brick traditional construction method is exactly the same, without any additional special ` construction facilities, special tools, is the best substitute for traditional clay solid brick.

Q:What are the advantages and disadvantages of clay refractory bricks?: The mineral composition of clay brick is mainly kaolinite (Al2O3, 2SiO2, 2H2O) and 6%~7% impurities (potassium, sodium, calcium, titanium, iron oxides). The sintering process of clay brick is mainly the process of the continuous dehydration of kaolinite and the formation of crystallization of mullite (3Al2O3. 2SiO2). SiO2 and Al2O3 in clay bricks form eutectic, low melting point silicates with impurities during sintering, and are surrounded by mullite crystals.

Q:What is the coefficient of heat transfer for clay bricks?: The coefficient of heat transfer is called the total heat transfer coefficient. The current standards and specifications of the state are uniformly named as heat transfer coefficients. The heat transfer coefficient K value refers to the stable heat transfer condition, both sides of retaining structure air temperature is 1 degrees (K, c), 1s in the area of 1 square meters of the heat transfer unit, is w / (M2 - degree (W/) m - K, where K can replace c).

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