Raw Materials for Refractory - Dead-Burned Magnesite (Dead Burnt Magnesite)
- Ref Price:
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- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 300 m.t
- Supply Capability:
- 50000 m.t/month
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Dead-burned Magnesiten Dead Burnt Magnesite
Specifications：
1.High purity Large crystal grain Compact structure
2.Strong resistance to slag material
3.Good thermal shock resistance
Magnesium Oxide is used in a number of industrial applications including: | |
Abrasives | As a binder in grinding wheels |
Animal feed supplement | Source of magnesium ions for chickens, cattle and other animals |
Boiler (oil-fired) additives | Material that is easily removed; reduced corrosion of steel pipes holding steam as well as sulfur emissions into the environment |
Boiler feedwater treatment | Reduces iron, silica and solids |
Chemicals | Starting point for the production of other magnesium salts such as sulfate and nitrate |
Coatings | Pigment extender in paint and varnish |
Construction | Basic ingredient of oxychloride cements used for flooring, wallboard, fiber board, and tile |
Electrical | Semi-conductors; heating elements insulating filler between wire and outer sheath |
Fertilizers | Source of essential magnesium for plant nutrition |
Foundries | Catalyst and water acceptor in shell molding |
Glass manufacture | Ingredient for specialty, scientific and decorative glassware and fiberglass |
Insulation | Light, flexible mats for insulating pipes |
Lubricating oils | Additive to neutralize acids |
Pharmaceuticals | Special grades of magnesium hydroxide, oxide and carbonate are used in antacids, cosmetics, toothpaste, and ointments |
Plastics manufacture | Filler, acid acceptor, thickener catalyst and pigment extender |
Refractory and ceramics | Basic ingredient in product formulations for the stee industry |
Rubber compounding | Filler, acid acceptor, anti-scorch ingredient, curing aid, pigment |
Steel industry | Annealing process; coating for grain-oriented silicon steel used in electrical transformers |
Sugar refining | Reduces scale build-up when used in juice clarification and precipitation |
Sulfite wood pulping | Source of base for cooking liquors |
Uranium, gallium & boron | Precipitation initiator by acid neutralization processing |
Wastewater treatment | Acid stream neutralizer; precipitates heavy metals |
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- Q:What are unshaped fire-resisitance materials?
- Refractory castable, refractory plastic material, usually classified according to construction and manufacture method, unfired bricks precast block, refractory pressed into material, refractory cast material, refractory coating, refractory ramming material there are many classification methods
- Q:Where is the development of refractory industry?
- Refractories for continuous casting is an important part of the continuous casting machine, in addition to the characteristics of general refractory material, also for the purification of molten steel and improve the steel quality, stable molten steel temperature and composition, control and regulate the flow of the molten steel and other functions, so it is called functional refractories.
- Q:Refractory factory grinding brick dust harmful to the body?
- Therefore, in the workshop work must pay attention to do their own protection.
- Q:What are the commonly used fire protection materials
- Firewall. The fire wall is made of non combustible material, and is directly installed on the base of the building or the reinforced concrete frame or fire proof walls . Fireproof limit of the firewall, according to the current "building regulations", is 4 hours, wheras the specification of Technical specification for concrete structures of tall building is 3 hours. doors resistant to fire, heat in a certain period of time These door usually prevent the spread of fire and gas in the fire resistant wall, staircase, pipe well. Fire door can be divided into steel fire doors, wood fire doors and composite materials fire door according to the material used. According to the limit of fire resistance can be divided into the class A fire door (1.2h), B fire doors (0.9), class C fire door (0.6h); (3) fire window. Windows resistant to fire, heat in a certain period of time It is usually installed in the fire resistance wall or doors; the fire shutter. This roller shutter can be refractory in a certain period of time. It is typically used for heat and fire insulation in escalator with difficulties to install fire resistant wall, fire resistant valve and smoke resistant valve. Fire resistant valve is installed in the ventilation and air conditioning system of air supply and return air duct, usually in the open state, fire, It will be turn off when the pipeline gas temperature reached 70 degrees, can meet the requirement for fire resistance and insulation for gas and fire. Smoke fire resistant damper installed in the exhaust system pipe, when the pipeline gas temperature reached 280 degrees, it will close automatically, insulating fire and gas.
- Q:what materials can make external wall fireproofing paint have the fireproofing effect
- Adding flame retardant or fire retardant materials can be fireproofing, which commonly referred to as the external walls of fire retardant coating or fire retardant coating. Principle: Fireproof paint itself is flame-retardant or non-combustible, so that the protected base material can not directly contact with the air in order to the ignition delay and reducing the burning speed; except that, it also has a lower thermal conductivity, which can delay the transfer of flame temperature to the protected base material; fireproof paint thermal can decompose non-combustible inert gas by heating to dilute the thermal decomposition of combustible gas in protected object, making it difficult to burn or slow down the speed of burning.
- Q:Who knows the new fireproof and thermal inuslation matertial?
- New fireproof and thermal inuslation matertial: foam concrete building blocks brick. The foam concrete building blocks brick is a new fireproof and thermal insulation material, with distinct advantages compared with the organic insulation material . Foam concrete can be used as wall materials, and it has a good self-insulation properties, so there is no problem of dropping off the outer insulating layer. A small part takes external wall exterior insulation, with mostly anchoring or dry hanging, which are not easy to fall off. Very few uses paste. Since the foam concrete and wall materials are of the same nature and strong adhesive, so it is also not easy to fall off.
- Q:Does the production of refractory belong to advanced technology？
- Refractory is traditional ceramic material. We can only say that national development is relatively backward. If the refractory is counted as new material, then it still has huge development potential.
- Q:What level is the rock wool board fireproofing material ?
- The fire rating classification is a provision for all insulation materials, rather than to separately divide rock wool. Determine the value of the material fire rating according to the relevant test items of 8624. As the rock wool is made from basalt fusion, so it is the level A non-combustible material.
- Q:What kind of fireproof material is used for steel structure?
- Brushing or spraying the coating on the surface of steel structure to prevent burning and insulate heat. It also prevents undermining the rolled steel from rapid temperature elevation and avoid collapse of building for lose of supporting capacities. Agglutination material are classified as fireproof coatings for steel structures which is solvent based and Water-based steel structure fire retardant coatings. Fireproof coatings for steel structures which is solvent based are subdivided into fireproof coatings for steel structures which is solvent based with low benzene content and fireproof coatings for steel structures which is solvent based with high benzene content (TVOC≤600g / L, benzene ≤5g / kg). It can be divided by thickness. ultra-thin (CB) fireproof coatings (coating thickness ≤3mm), thin (B) fireproof coatings (3mm & amp; lt; coating thickness ≤7mm) and thick (H) steel structure fire retardant coating (7 mm & amp; lt; coating thickness ≤45㎜).
- Q:How to distinguish the construction fire-proof material rating?
- Currently the national standards divide building materials as follows: A1, A2, B, C, D, E, F. External wall thermal insulation fire?rating can be basically divided into: A1, A2, B1, B2, B3 and other levels. Class A is non-combustible, class B1 flame retardant, class B2 combustible, class B3 flammable. Combustion performance grades of building materials and products are divided into class A1, A2, B, C, D, E, F. And grading of flooring materials and pipeline thermal insulation materials is also stipulated separately, whose combustion performance grade is distinguished by the subscript fl and L respectively. ie. Combustion performance grades for ordinary building materials and products are A1, A2, B, C, D, E, F; combustion performance grades for paving material are Alfl, A2fl, Bfl, Cfl, Dfl, Efl, Ffl; combustion performance grades for pipeline thermal insulation material are A1L, A2L, BL, CL, DL, EL, FL.
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Raw Materials for Refractory - Dead-Burned Magnesite (Dead Burnt Magnesite)
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 300 m.t
- Supply Capability:
- 50000 m.t/month
OKorder Service Pledge
OKorder Financial Service
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