calcined bauxite for refractory bricks

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China main port
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25 m.t.
Supply Capability:
10000 m.t./month
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Product Description:

Quick Details

Place of Origin:

Shanghai, China (Mainland)

Shape:

Brick

Material:

Alumina Block

SiO2 Content (%):

3~9%

Al2O3 Content (%):

3~25%

MgO Content (%):

40~60%

CaO Content (%):

2%

Refractoriness (Degree):

1770°< Refractoriness< 2000°

CrO Content (%):

8~20%

SiC Content (%):

none

Model Number:

KS1323

Brand Name:

cnbm

Packaging & Delivery

Packaging Details:carton
Delivery Detail:3~5days

Specifications

calcined bauxite for refractory bricks 
Refractory Bricks magnesia chrome bricks are mainly made from sintered

calcined bauxite for refractory bricks

Specifications

Refractory Bricks magnesia chrome bricks are mainly made from sintered magnesia and chrome-oxide after high pressure shaped

Refractory Bricks magnesia chrome bricks are mainly made from sintered magnesia and chrome-oxide, by high pressure shaping and high temperature firing. According to different requirements, the contents of the Cr2O3 can be changed.

 

item\index

MGe-8

MGe-12

MGe-16

MGe-20

MgO,% ≥

60

55

45

40

Cr2O3,% ≥

8

12

16

20

Apparent porosity % ≤

21

21

23

23

Cold crushing strength,MPa ≥

30

30

30

30

0.2MPa the load softens the beginning temperatur/°C ≥

1530

1550

1550

1550

Heat shock resistance(950°C air cooling),each ≥

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calcined bauxite for  refractory  bricks


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Q:How to distinguish the fire rating of rubber and plastic thermal insulation material?
According to GB 8624-2006 "building materials and combustion products classification", the division of the material's combustion performance grade is changed from five levels of level A (homogeneous material), A (composite sandwich material), B1, B2 and B3 to seven levels of A1 , A2, B, C, D, E and F or A1f1, A2f1, Bf1, Cf1, Df1, ef1 and Ff1 or A1L, A2L, BL, CL, DL, EL and FL . The level B1 rubber and plastic fireproof and thermal inuslation matertial is the best, but the most commonly used one is level B2. Hope it will help you.
Q:Is aluminium oxide refractory material?
Aluminium oxide with 2030ºC melting point is a kind of good refractory material. It can be used as analytical reagent, dehydration and adsorbing material of organic solvent, catalyst of organic reaction, abraser,polishing agent, raw material of aluminum smelting technology and refractory material. Hope it is helpful to you.
Q:Graphite and other carbon materials may be oxidized to CO or CO2 at high temperatures. But why can they be refractories?
There is no contradiction for this. Any substance can be combustible, but different materials have different ignition points.There are many types of graphite. Pyrolytic graphite has a much lower ignition point. Therefore, as long as it reaches at a certain temperature, it can convert into graphite. Mostly, in practical applications (such as brake pads will add a certain amount of graphite), graphite is required to have refractoriness of below 1000 ℃. Graphite can serves as both the combustible and refractory material. So, it can be used as a fire-resistant and high-temperature-resisrant material because graphite (lamellar graphite) has a ignition point of at least 3000 degrees in an oxygen free condition. The above information is for reference only and is offered by Xin Ruida Graphite Company.
Q:What are the characteristics of phenolic resin as a refractory material?
Q:which kind of material is chosen for fireproofing window?
(1) the inside filler material of steel, wood frame should use incombustible material. (2) window frame uses steel frame or wooden frame with certain strength that can safeguard the integrity and stability of the components. (3) steel frame and mound layer can choose galvanized steel sheet or stainless steel plate. Its selection criteria conform to the article 5.1 in GB12955 Steel Fireproof Door General Technical Condition. (4) the selection criteria of wooden frame and mound layer should conform to the article 5.1 in GB12955 Wooden Fireproof Door General Technical Condition. (5) fire-resistant glass can choose test approved products without affecting the fire resistance of fireproofing windows . Light transmittance of glass should not be less than 75% of same layers commom sheet glass. (6) the sealing material between the frame and the fire-resistant glass should use flame retardant materials, it can play a role of fireproofing and smoke insulation in the fire. (7) hardware accessories should be tested qualified approved supporting product.
Q:Physical and chemical indicators of various refractory.
please read"Refractories Standard Series" for refernece, general business standards are higher than the national standard.
Q:Manganese steel belongs to refractories
Material wear and other harsh working conditions, extrusion, there will be work-hardening phenomenon rapidly on the surface. The most important feature of manganese steel is that it is not refractory under a strong impact, and under extrusion conditions, part of it will be fractured. The main form of damage is wear and consumption: It is a kind of inorganic non-metallic material whose refractoriness is not lower than 1580 ℃, mainly used to endure impact. Manganese steel is a kind of high strength steel, which is free of deformation, so that it can remain austenite good toughness and ductility at heart while keeping good wear resistance at the same time on hardened layer. Refractories are
Q:How many refractories are there for boiler above 1200 ℃?
Ordinary clay brick is for burning layer, red brick for external wall, light clay brick for thermal insulation layer, built by clay refractory mortar. Sindeyuan Refractories.Hope you adopt. Thank you. In fact, there are many manufacturers producing furnace burden. We has been using products of Huaheng, which are anti-erosion, easy to construct and can improve production efficiency, reduce steelmaking cost.
Q:In entering fire door, which material does well?
Hello: The basic material has steel, wood, or steel. The fireproof sandwich board, such as rock wool and perlite. The material of fire door, fire door has steel fire door and wooden fire door. There is no doubt that wooden fire door can't be used as entering door. In the steel fire door, two layers of steel plate in the clip is flame retardant material. In general, there is no lock. Of course, you can add locks in it, but it doesn't have pry proof function. I hope my answer can help you.
Q:What refractories are resistant to fluorine gas?
It is recommended to use fused-quartz brick, which will produce hydrofluoric acid fluorine (an acidic gas) when water vapors. It is cheap. While it is recommended to use silica brick if it exceeds 1,200 degrees. So acidic refractory is an advisable refractory for using. It works well if the temperature is below 1200 degrees.

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