• Raw Materials for Refractory:Refractory Grade Calcined Alumina with D50:3-5um System 1
  • Raw Materials for Refractory:Refractory Grade Calcined Alumina with D50:3-5um System 2
  • Raw Materials for Refractory:Refractory Grade Calcined Alumina with D50:3-5um System 3
Raw Materials for Refractory:Refractory Grade Calcined Alumina with D50:3-5um

Raw Materials for Refractory:Refractory Grade Calcined Alumina with D50:3-5um

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Loading Port:
Tianjin
Payment Terms:
TT or LC
Min Order Qty:
25 m.t.
Supply Capability:
10000 m.t./month

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Quick Details

·         Place of Origin: Shandong, China

·         Shape: powder

·         Material: Alumina

·         Al2O3:99.2%min

·         SiO2:0.05%max

·         Fe2O3:0.04%max

·         CAO:0.04%max

·         Refractoriness (Degree):1770°< Refractoriness< 2000°

·         Model Number:Customer's Requirement

·         Brand Name:CMAX

·         Application:Metallurgy and Refractory

·         Product name: Calcined alumina

·         Color: White

·         Size:D50:3-5um/2-3um/1-3um

·         BULK DENSITY:N/A

·         Certificate:ISO9001

·         Usage:Fire Resistance Place

·         Type:Raw Refractory

·       Packaging Details:Bags/As costomer's requirement'

 

REFRACTORY GRADE CALCINED ALUMINA WITH D50:3-5um

 REFRACTORY GRADE CALCINED ALUMINA WITH D50:3-5um

 

Quality assurance:

1.On a regular basis or as per your request,we entrust national testing agencies to conduct quality inspections

2. Strictly in accordance with the ISO9001-2008 international quality system standard,we monitor and manage the whole process throughout production,quality testing,and measurement to ensure product quality

 

FAQ:

Q: What kind of payments does your support?
A: T/T, L/C, Cash are accepted.
Q: Do you charge for the samples? 
A: Accordeing to our company policy, the samples are free, you only charge the freight fee. And we will return the freight fee during the next order. 
Q: Can you produce according to customers' design? 
A: Sure, we are professional manufacturer.
Q: Do you have other products?
A: Yes, please check our other products in website.

 

Q:The fire prevention board line is made of what material?
(1) if it's real wood floor, the line should be made of wood. The ready-made wooden line, walnuts, price range depends on the texture width. The common width is 100 mm. One linear meter is around $17 - $30. Paulownia is cheaper with one linear meter more than 10 yuan. When it is composite wood floor, high-density plate modelling line can be used. The price is commonly between 40 to 80 yuan (2400 x 1200 mm), which depends on the thickness and density and also the factory. There are also imitated wooden aluminium line. (3) if it's the marble ground, you would better use marble line, which is 200 yuan one square meter. It's price is also unequal. The imitated stone is also available. There are a lot of kicking decoration materials and it depends on how you use it. That is to say crural line should be coordinate with the ground. It means that it sjould not only to be beautiful but also to be practical. It would be better if it is relatively cheap as well.
Q:What type of firebrick does TZ-3 represent?
It is the standard brick.
Q:What kinds of refractory materials that uses a-Al2o3 powder? What are the purpose of it?
04La-Al2O3 powder is a alumina powder whose raw material is industrial aluminum oxide which has been calcined at high temperature. It is a good polishes for ceramics and jade, meanwhile, it is also an important raw material for high-end refractory materials. The technical indicators parameters A1023 mark A1535 chemical composition AL2O3≥ 99.92 3%, ≥ 3.10FE203≤ 0.799 Refractory calcined alumina powder (a-Al2O3) 1.2 true density (g & # 47, by fully ground powder made of different fineness .O.10 0.07 0.04NA2O≤ 0.93a-Al2O3 (%) ≥ 95 95 primary crystallization average grain (um) 2 ~ 3 3 ~ 5 average particle size (um) 40 ~ 602.6SIO2≤ 0.1 0.15B2O3≤ - 0, glass, engineering ceramics typical use electronic ceramic insulating ceramic refractory ceramic wear 3
Q:What is refractory?
Refractory materials are widely used in metallurgy, machinery manufacturing, chemical industry, petroleum, power and other industrial fields. It is an inorganic nonmetallic material mostly used in metallurgical industry with the minimum refractoriness of 1580 ℃, able to resist high temperature without softening (annealing). It accounts for 50% to 60% in total output. Refractoriness refers to refractory's ability to resist fire.
Q:How to divide the fire rating standards of insulation materials?
1. According to the GB8624-97 national standard, building materials can be divided into following levels in terms of combustion performance. A-level: Non-combustible building materials: Materials almost don't burn. B1-level: Fire-retardant building materials: Fire-retardant materials are good at resisting flame. It is difficult for them to burst into fire when coming across open fire in the air or at high temperature. It will not quickly get wilder and when the fire source removes, it will be extinguished immediately. B2-level: Combustible building materials: Combustible building materials can play a certain role in preventing combustion. It will immediately burst into flames when coming across open fire or at high temperature, and will lead to fire spreading, such as wooden pillars, roof frames and beams as well as stairs. B3-level: Inflammable building materials: Inflammable building materials are highly flammable with no flame retardant ability. The fire risk is high. 2.The exterior wall thermal insulation materials can be classified according to fire rating. 1. Insulation materials with A-level combustion performance: rock wool, glass wool, foam glass, ceramic foam, foam cement, close-celled perlite, etc. 2. The insulation materials with B1-level combustion performance: specially-treated extruded polystyrene boards(XPS)/ specially-treated Polyurethane(PU), Phenolics, Polystyrene rubber powdery particles,etc. 3. Insulation materials with B2-level combustion performance: Expanded polystyrene sheets(EPS), Extruded polystyrene board(XPS), Polyurethane(PU), Polyethylene(PE), etc.
Q:Refractory material, refractory brick
High alumina brick is commonly used in high aluminum, LZ-75, LZ-65 and LZ-55, as well as high alumina brick for blast furnace, high alumina brick for hot blast furnace, and low creep high alumina brick
Q:What's the heat conductivity coefficient of fire-resistant material?
5~5 (Unit: W·m-1·K-1). The symbols are λ or K. Thermal conductivity and material properties Thermal insulation material generally is 0, and is related to organizational structure and working temperature. Thermal conductivity of the material refers to the heat transferred from from one plane to another plane in 1 seconds. Generally the thermal conductivity of fire-resistant material is 1. The larger the value is, the stronger the thermal conduction performance is. If the temperature of two planses differes for 1K, then the thermal conductivity is 03~1. The plane cover 1square meter.
Q:The principle of choosing fire-resistant material in Thermal Energy and Power Engineering equipment.
Different thermal technology equipment has different operation condition and select different refractory material. We should take economical and practical as principle.
Q:What is the fireproofing requirements of external wall thermal insulation materials?
External wall thermal insulation materials fire rating regulations, 1, the height of a building is greater than or equal to 100m , the combustion performance of insulation materials should be level A; 2, the height of a building is greater than or equal to 60m but less than 100m, the combustion performance of insulation materials should not be less than the level B2. When using level B2 thermal insulation material, every layer should set horizontal fire barrier zone 3,The height of building is be equal or greater than 24m but less than 60m, the combustion performance of thermal insulation material should not be less than the level B2. When using level B2 insulation material, each two-layer should set fire barrier zone ; 4, the height of building is less than 24m, the combustion performance of insulation materials should not be less than the level B2. Besides, when using level B2 thermal insulation material, each three-layer should set a horizontal fire barrier zone.
Q:Which kind of external wall fire barrier zone material is better?
The following types are: rock wool, aerated concrete, phenolic aldehyde and foam cement rock wool fire barrier zone "rock wool board" mainly uses water-repelling rock wool board produced by pendulum method as thermal insulation layer materia, and connecting and fixing base wall by binding and nail bonding, it is composed level A non-combustible building energy efficiency thermal insulation system by plastering layer composed by plastering mortar and glass?fiber mesh and decorative mortar finishing layer or coating. Good air permeability

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