Electrically Fused Magnesia Product

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Electrically fused magnesia is made by smelting finely sorted special grade-A raw magnesite in an electric arc furnace. Its features are high purity, big crystalline size, dense structure, good corrosion resistance, and thermal shock resistance.

Index

Chemical Composition /%

Grain/mm

Brand

MgO(≥)

SiO2(≤)

CaO(≤)

B.Dg/cm3(≥)

0-10

0-50

0-100

DMS-98

98

0.6

1.2

3.50

DMS-97.5

97.5

1.0

1.4

3.45

DMS-97

97

1.5

1.5

3.45

DMS-96

96

2.2

2.0

3.45

It is produced by the melting and cooling of magnesite in electric arc furnace.This product has the characteristic of tough and big crystal grain,good chemical stability,strong slag resistance and high strength and also high temperature.It is the main material for the producs of magnesium limestone and magnesia carbon refractory.the products are mainly used in large checker chamber of float glass stove,electric are furnace,industry kiln and insulant of householdappoliances etc.

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Q:What are the main characteristics of the sic refractories?
1. The usage temperature of silicon carbide refractory is generally 1760 ℃ 2. The silicon carbide refractories can withstand dramatic changes in temperature, and a good thermal shock resistance performance. To prevent the cracking or breaking of lining refractories. 3. Under the conditions of high or low temperature, it can withstand a certain compressive stress. 4. Under the conditions of high or low temperature, it can withstand friction. 5. It can withstand the huge hydraulic pressure or buoyancy of the metal. 6. It can also withstand the effect of furnace gases to prevent the infiltration of other refractories and reactions.
Q:How much modulus is used as refractories material of sodium silicate.
Storage and use are very convenient, especially for mechanized and the evenly refractory material and the sodium silicatemodulus is generally...2. transportation. The appearance of product is pure white. Instant powdered sodium silicate, also known as instant sodium metasilicate.4 to 3, in powder form, automation. in the range of 3, hydrated sodium silicate
Q:What material is used for making refractory stone bowl?
Stone pot, to make it easy, is pot made of stone. Stone pot is carved from high-quality natural refractory stone with a professional way. It has attractive and diverse appearance, and it is hard, heat fast, not stick food and the cooked food is attractive and delicious. And it is rich in a variety of trace elements which is beneficial to the human body. High quality
Q:What are the fire resistances of grc partition panels?
fire resistance of partition panel≥3.5h, it has an excellent fireproof performance and can be applied to fire-proof bulkhead.
Q:how is the high-temperature flame-retardant fibre board?
------ Different category of high temperature materials including refractory and heat-resistant material, inorganic compounds, high-molecular polymer. refractory usually refers to an inorganic material that can endure temperature above 1580 ℃ . They are for building kiln, combustion chamber and other buildings that require heat resistance materials. It is generally made of quartz sand, clay, magnesia mineral, dolomite.
Q:Does anyone know what is a lightweight refractory material?
I am ignorant of this!!
Q:Is fireclay poisonous?
Refractory materials are typically oxides, alumina, magnesium oxide and aluminate cement and etc, which are non-toxic.
Q:What are the grades of refractory exterior wall thermal insulation materials?
Classification of fire rating of extrior thermal insulation materials 1, According to national standard GB8624-97, the combustion performance of building materials are divided into the following grades A level: Incombustible building materials: Materials hardly burn. B1 class: Flame-retardant building materials: Flame-retardant material has good flame resistance. In case of fire in the air or at high temperature, it is difficult to catch fire and the fire will not spread quickly. And when the combustion source is removed, the burning will stop immediately. B2 Class: Combustible building materials: Combustible materials have a certain flame retardancy. In case of fire in the air or at high temperature, it will immediately burst into flames and it is easily to spread fire, such as wooden column, wooden roof truss, wooden beams and wooden stairs, etc. B3 level: Inflammable building materials: It has no flame retardant effect, and it is extremely inflammable, and the risk of fire is high. Classification of exterior wall thermal insulation materials according to fire rating: 1. Thermal insulation materials with A-level combustion performance Rock wool, glass wool, foam glass, foamed ceramic, foam cement, hole-closed perlite, etc. 2, Thermal insulation materials with B1-level combustion performance: Extruded polystyrene board (XPS) after special treatment / polyurethane (PU) after special treatment, phenolic aldehyde, gelatine powder polystyrene granule, and etc. 3. Thermal insulation materials with B2-level combustion performance: Molded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.
Q:What refractories can withstand high temperature above 2100 degrees?
But the price is more expensive, while the insulation performance is not as good as common materials. Is there a material that can withstand 2100 ℃? Currently, the long-term use temperature of the best refractory bricks is about at 1800 ℃, while materilas that can withstand a temperature of 2100 ℃ are relatively rare in the production.
Q:What's the material of electrical fire prevention board?
Industrial electrical fire prevention board is usually made of flame-retardant fiberboard, and its main purpose is for fire prevention and thermal insulation. Iron plate is electrically conductive with good thermal conductivity, which will cause the result that the equipment is not insulated and suffers larger superheating surface!!!! So the material uses the flame-retardant fiberboard. Hope my answer is helpful for you.

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