Magnesite Brick for Cement and Glass Plant

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
1 m.t.
Supply Capability:
2000 m.t./month

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Description of Magnesite Brick

Magnesite Brick for Cement and Glass Plant are designed and manufactured as per the different usage parts and working conditions of electric furnace, converter and ladle. Magnesite Brick is shaped by high purity & high compact or large crystalline fused magnesia and high purity graphite as main materials and phenolic resin as binder. 

Magnesite Brick is mainly applied for the lining parts of electric furnace and converter. Directly touching molten steel and slag, Magnesite Brick has the advantages of high strength, high slag resistance, good thermal stability and high refractoriness.

 

Specifications for Magnesite Brick

 

Product

Item          
Magnesite Brick for Cement and Glass Plant
 KBL-65 KBL-75
Al2O%>65>75
Fe2O3  %2.02.0
Refractoriness °C17901790
Apparent porosity %2424
Bulk density  g/cm32.452.55
Cold crushing strength Mpa4555
Refractoriness under load KD,°C15001520
Reheating Linear Change  %1500°C×2h (0.1~-0.2)1520°C×2h (0.1~-0.4)
Thermal shock resistance ,times     (1100°C water cool)1815
Application Industrial furnace temperature sharp partsIndustrial furnace temperature sharp parts

 

Features of Magnesite Brick

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

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

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

 

Typical Application of Magnesite Brick

Furnaces of metallurgy industry, heat treatment furnace.

Furnaces of chemical industry and construction industry.

Furnace of incineration of garbage, recirculating fluidized bed furnace .

 

 

 

 

 

 

 

 

 

 

 

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Q:What are the main components of high alumina bricks?
High alumina brick materials according to the main mineral phase can be divided into: aluminum silicate minerals, such as sillimanite, kyanite, andalusite, and synthetic mullite.
Q:What is the content of free silica in the refractory bricks of high alumina bricks?
Refractory powders are not rich in free silica in varying degrees
Q:Use of high alumina refractory bricks?
High alumina refractory brick in Al2O3 more, close to neutral refractory material, can resist acid slag and alkaline slag erosion, because it contains SiO2, so alkaline slag ability than acid resistance slag ability less.It is widely used in building blast furnace, hot blast furnace, furnace top, blast furnace, reverberatory furnace and rotary kiln lining. In addition, high alumina bricks are widely used as furnace regenerative checker, pouring system for plug nozzle, etc..
Q:What is the standard size of high alumina brick?
Standard brick: 230 x 115 x 65; four points: 230 x 115 x 40; three points: 230 x 115 x 30; 150 x 120: Brick gable. Light weight brick 1 to 1.7 kilograms; heavy clay superscript brick weighs 3.75 kilograms; light 30 plates 0.79 kilograms; light 40 plates, 1.05 kilograms.
Q:What are the reasons for the decline in the performance of high alumina bricks when we use high alumina refractory bricks?
Quality requirements for aluminium bricks of different grade. 2, high aluminum powder and high alumina aggregate and other materials of reasonable proportion, to reach the production requirements.
Q:Which is better, the soft core or the hard core?
When the current through the wire, it will produce a magnetic field in the vertical plane space of the wire, if there is a current two wire close by in the same direction, because they produce a magnetic field in the direction is opposite, it will produce a repulsive force is due to the magnetic field force. They will mutually inhibit current intensity of the other party, caused by the reduction of current in the wire, this inhibition of each current intensity, we called wire inductance. When the AC current line frequency is high, the inductance is stronger.
Q:How to make refractory bricks and boiler wall adhesion more firm?
If the condition, the user heat-resistant steel welding grip nails, expansion joints can not be too big.. Also to use high temperature aluminum brick, high temperature resistance, but also to extend its use cycle.
Q:What is fireproof concrete?
Silicate fireproof heat-resistant concrete using temperature can reach 700 DEG ~800 DEG, the main mechanism of its heat is dehydrated calcium hydroxide silicate hydrates series of cement clinker under high temperature, the calcium oxide and slag and mixing activated silica material in the three and two aluminum oxide and the reaction of anhydrous calcium silicate and anhydrous aluminum acid calcium has strong heat resistance, the fire resistance of concrete is a certain. Such as the use of high alumina bauxite and broken bricks, magnesia brick and magnesia for fireproof heat-resistant concrete materials with the highest using temperature can reach 1100 DEG C.
Q:What are the lining structures of lime rotary kilns and what are the requirements for refractories?
The current configuration of domestic calcining active lime rotary kiln refractories are as follows: the discharge end of low cement high alumina castable with 3% steel fiber; the cooling zone and the firing zone: dry magnesia spinel brick with high aluminum brick with high temperature; preheating: high alumina brick; low temperature preheating zone: clay brick light clay brick; feeding end: low cement high alumina castable with 3% steel fiber; in addition, brick size also have the corresponding requirements; dimensional tolerances: dimensional tolerances used in different parts of the requirements are not the same, the general control in 2mm; corner damage: general permit edge damage 40mm and 5mm deep within angle loss in the hot and cold surface is allowed to have only one, three edges and the length of not more than 50mm; there are cracks parallel to the use of surface crack is not allowed, cracks of brick surface are allowed.
Q:What are the high temperature refractory mortars made of?
Siliceous mud, mineral composition and chemical composition is similar with silica, excellent corrosion resistance, water glass slurry, drying shrinkage, but also can be used for bonding fiber products, sealing furnace wall.

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