Magnesia Bricks for the Glass Klin

Magnesia Brick for the Glass Klin Introduction
 
Magnesia bricks with high purity and high firing temperature are called direct-bonded magnesia bricks because of the direct contact of the magnesite grains. Magnesium refractory brick is an alkaline refractory material with a magnesia content of more than 90% and a periclsite as the main phase. Magnesia refractory bricks have high refractoriness, good resistance to alkaline slag, high starting temperature of load softening, magnesia firebricks have poor thermal shock resistance. Magnesia firebricks made of fused magnesia are called electrofusion and recombined magnesia bricks. Magnesia fire bricks mainly used in steelmaking alkaline open hearth furnace, electric furnace bottom and furnace wall, permanent lining of oxygen converter, non-ferrous metal smelting furnace, high temperature tunnel kiln, calcined magnesia brick and cement rotary kiln lining, heating furnace bottom and furnace wall, glass kiln regenerator lattice brick.
 
Magnesia Brick for the Glass Klin Classification
 
Magnesia bricks for the glass klin are divided into sintered magnesium bricks and chemically combined magnesium fire bricks according to refractory bricks different production processes. The sintered magnesia brick is made of calcined magnesia with appropriate particle size ratio, added with brine (MgCl2 aqueous solution) and sulfite pulp waste liquid as a binder, Magnesia refractory bricks are formed by pressure molding at a high temperature of 1550~1650 °C.
 
The chemically-bonded magnesia brick is not subjected to the calcination process. After the sintered magnesia fire brick is proportioned according to the particle size ratio, an appropriate amount of mineralizer and binder are added, the mixture is pressed and formed, after drying, magnesia refractory brick is a finished product. The chemically bonded magnesia bricks have lower strength and lower performance than sintered magnesia bricks, but magnesia refractory bricks are cheaper than half the price of sintered magnesia bricks. Magnesia refractory brick is used in areas where performance requirements are not too high, such as furnaces and soaking furnace bottoms and the glass furnace.
 
Magnesia Brick for the Glass Klin Advantages
 
1. Magnesia firebricks have stable at high temperatures.
 
2. Magnesia firebrick have good resistance to alkaline slag.
 
3. Magnesia bricks for the glass furnace have strong resistance to erosion.
 
4. Magnesia refractory bricks have load softening start temperature is high
 
5. Magnesia refractory brick for the glass klin have good slag resistance.
 
6. Magnesia refractory bricks for the glass klin have high temperature mechanical strength.
 
 
Magnesia Brick for the Glass klin Using Precautions
 
1.Magnesia brick is an alkaline refractory material, mgnesia refractory brick has strong resistance to alkaline slag, but can not resist the erosion of acid slag. At 1600 °C, mgnesia refractory bricks can be contacted with silica brick, clay fire brick or even high alumina brick. The refractoriness of magnesia refractory bricks is above 2000 °C, but Magnesia fire bricks load softening point is only 1500~1550 °C. Moreover, the temperature interval from softening to 40% deformation is very small, the thermal stability of only 30~50 °C magnesia bricks is also poor, this is an important reason for the damage of magnesia bricks.
 
2.Magnesia refractory bricks have poor hydration resistance, easy to hydrate with water, and produce cracks and reduce their strength.
 
Magnesia Brick for the Glass Klin Application
 
1.Steelmaking alkaline open hearth furnace, electric furnace bottom and furnace wall
 
2.Permanent lining of oxygen converter.
 
3.Non-ferrous metal smelting furnace.
 
4.High temperature tunnel kiln.
 
5.Calcined magnesia brick and cement rotary kiln lining.
 
6.Furnace bottom and furnace wall.
 
7.Glass kiln regenerator brick.
 
Magnesia Brick for the Glass Klin Specification
 

 
 
Magnesia Brick for the Glass Klin Physical and Chemical Properties
 
Generally, the load-softening start temperature of magnesia bricks is between 1520 and 1600 °C, while that of high-purity magnesia bricks is up to 1800 °C. The loading softening start temperature of the magnesia brick is not much different from the collapse temperature. The refractoriness of magnesia refractory bricks can reach above 2000 °C, the load softening temperature varies greatly depending on the melting point of the cement phase and the amount of liquid phase produced at high temperatures. The linear expansion rate of magnesia bricks at 20~1000 °C is generally 1.2%~1.4%, mgnesia bricks is approximately linear. When a liquid phase appears in a brick at a high temperature, shrinkage suddenly occurs. Magnesia bricks for the glass klin have a higher thermal conductivity, mgnesia bricks is second only to carbon bricks and silicon carbide bricks in refractory products, which decreases with increasing temperature. The thermal shock resistance of magnesia bricks is poor, and the purity of magnesia bricks can be improved to improve the thermal shock resistance. Magnesia bricks have poor resistance to acid slag and cannot be directly contacted with silica refractory bricks when used. Generally, refractory bricks are separated by neutral bricks. Magnesium bricks have low electrical conductivity at normal temperature, but they cannot be ignored at high temperatures (such as 1500 ° C). If used in electric furnace bottoms, attention should be paid.
 
Magnesia Brick for the Glass klin Production Process
 
The magnesia refractory raw material is crushed into granules and powders, after being compounded according to a certain ratio, the binder is mixed and formed into a mud material, then formed into a magnesia brick by molding, drying, firing, and the like. The firing temperature of ordinary magnesia refractory bricks is generally 1500~1650°C, the firing temperature of high-purity magnesia bricks is as high as 1700~1900°C. The chemical bonding magnesium brick production process is basically the same, but the chemical bonding agent is combined without high-temperature firing, the low-temperature heat treatment is required to make the non-burned magnesium brick. Refer to the technical specifications provided by the RongSheng refractory bricks factory.
 
RongSheng refractory factory is a manufacturer of refractory bricks, RonggSheng refractory manufacturer have an automated assembly line. If you choose our products, Rongsheng refractrory factory will give you an ex-factory magnesia brick price. Our products have quality certification. Rongsheng refractory material group will provide the certificate query code, check the address to give you a sense of security and trust us.