• white fused alumina for refractory 99% System 1
  • white fused alumina for refractory 99% System 2
white fused alumina for refractory 99%

white fused alumina for refractory 99%

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Packaging & Delivery

Packaging Detail:25kg bag or ton bag or as your requirement.
Delivery Detail:within 20 days delivery after receipt of advance payment.

Specifications

99% high purity abrasive White fused alumina for refractory
1.White fused alumina99%
2.Refractory: 0-1mm, 1-3mm, 3-5mm, 5-8mm

Products discription

1.Introduction

The main raw material of white fused alumina is high grade processed alumina, which is fused with the carbon material and scrap iron in the electic furnace under the high temperature of above 2200°C.The product is characterized by low expansion coefficient, high refractoriness, good thermal and chemical stability.

2. Grain size commonly used

  • Refractory: 0-1mm, 1-3mm, 3-5mm, 5-8mm ,200#-0, 325#-0.

  • Abrasives: F24-F60.

  • Sandblasting abrasive:F10-F240.

  • Precision casting: F80-100, F100-F120.

  • Ceramic & electronic polishing:F240-800.

    3.Physical properties of White Fused Alumina

Item

Color

Color System

Mohs Hardness

Melting Temperature(°C)

Refractory Temperature(°C)

True Density( g/cm3)

Magnetic Material

Specification

white

trigonal system

min10

2250°C

1900°C

min3.50

max0.003%

4.Chemical index of White Fused Alumina

Purpose

Specification

Chemical composition(%)

Magnetic material content(%)

Al2O3

Na2O

SIO2

CaO

For abrasive

F

12#—80#

min99

max0.6


max0.4

max0.003

90#—150#

min98.5

max0.003

180#—240#

min98.2

max0.7


max0.4

max0.002

For refractory

Size sand

0—1mm

min99

max0.5


max0.4

max0.003

1—3mm

3—5mm

5—8mm

Fine powder

200#—0

min98.5

max0.5


max0.5

max0.003

325#—0

Q:How much is the content of boron carbide in refractory material?
furthermore, aluminite powder costs only ?20,000/ton, and the addition is only 0.1%—2%, or just none; while boron carbide costs ?50,000/ton.
Q:How is the development of Xinmi refractories industry? What's its advantages and disadvantages?
The advantages are largest scale, top production amout in the country, accounting for one-third of the national market, having technology, strength and the market. The disadvantages are the lack of mineral resources, serious environmental pollution,
Q:What is the definition and classification of amorphous fire resistance materials?
9.8. brick made of refractory bone material and powder material can be used directly or after adding appropriate liquid formulation Refractory paint. Refractory slinging material 6. Prefabricated cubes, bonding agent or other additives. fire-resistance sparying material compround additives. Refractory pressed into the material, binder. Refractory ramming material 3, The material is a new fire proof material without calcination Heavy aggregate and lightweight aggregate: Inorganic binding agent and organic bond, its fire resistance is not less than 1580. Refractory castables 2 mouldable refractory Classification according to the type of bonding agent: 1. Classification according to refractory aggregate. According to the production and construction method, refractory mud or refractory mire, with a certain proportion of the mixture
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:Who knows the fire endurance of rock wool color plate?
I'm glad to answer your question and offer you some of my experiences, for reference only. In fire?safety?rules, it can be divided into non-combustible component, hard-combustible component, combustible component according to the combustible degree of building materials. Rock wool board is building board recombinated artificially by fibers processed by coated steels and inorganic minerals like basalt mineral, because steel plate and rock wool which is the main components are non-combustible material, so rock wool board should be considered as non-combustible component. The fire endurance of rock wool board has its own judging criteria. Lose sustaining power, integrity and fire insulation function. Its fire endurance is within 2 hours.
Q:What are the requirements when producing fireproof materials by kaolin?
Kaolin refractories in fact play a role in two aspects, one is to improve the refractoriness, the second is to improve plasticity of the the refractory . Aluminum content the higher the better, of course, but kaolin is not the only material to improve the content of aluminum, using materials that contain higher content of aluminum such as the bauxite chamotte. So the content of kaolin aluminum does not have to be too high. over 38% is fine. viscosity is important and strong viscidityis better without having to add bentonite. Refractoriness above 1400 degrees is enough.
Q:What's the maximum temperature that the high-temperature resistant refractory ceramic fiber cotton can endure?
Nichrome wire, stainless steel wire and glass fiber are reinforced. Ceramic fiber coating cloth and slag cloth, sintering ceramic fiber cloth and ceramic fiber fumigation cloth) Characteristics of the ceramic fiber cloth: high temperature resistance, low heat conductivity, thermal shock resistance, low thermal capacity; superior insulating property at high temperature, long service life; resistance to nonferrous metals like molten aluminum and zinc erosion; low and high temperature strength; innocuity with no adverse effect on the environment; Applications of ceramic fiber cloth: It can be applied to the thermal insulation of all kinds of furnaces, high-temperature pipelines and vessels; furnace doors, valves, flange seal, fire doors, fire resisting shutters and high-temperature furnace door curtains; engine and instrument insulation, clad material of fireproof cables, and high-temperature resistant and fire-proof materials; thermal insulation cloth for coverage, high-temperature expansion gap padding, and inner linings of the flue; high temperature resistant labor safety products, fireproof suits, high-temperature filtration and sound absorption, replacement of asbestos, etc.
Q:What is the particle size of boron carbide for refractories?
0.3-0.5% is OK, but also with other additives, such as aluminum powder, silicon powder, magnesium alloy powder and so on. To achieve good results.
Q:who knows the technology of fireproofing material?
First: Firstly, you should produce the recipe and prepare the raw materials, for example, if you prepare to produce 1 ton, you should compute the recipe sheet of 1 ton producing; check whether the raw materials are complete; second: make the color and filler thick liquid; add water in order and proper auxiliary in a low speed, then put color and filler (generally we should firstly add something with large oil absorption), wash the meachine after putting the powder. Then seperate them for about 20 miutes in a high speed, until the fineness is qualified; of course, if you need sander, i think you only need sino-soviet differential powder material and non-obvious particles. Third: Paint mixing period: after making the color and filler thick liquid, reduce the roll speed into about 600 roll per minute, add emulsion and proper auxiliary, finally adjust PH and viscosity. Liquid solvent paint, pigment paste: Resin,solvent and pigment ---〉pre mixing---〉stick---〉grinding--〉stick--〉packaging, highlight varnish: Resin, solvent ----〉mixing ----〉stick ----〉packaging, sub-gloss varnish: Resin, solvent----〉mixing----〉matting agent,stick----〉packaging, colored?paint: The primary colorant----〉Color matching by auxiliary color paste----〉stick----〉packaging, aluminum?paint: Aluminite powder soaking----〉resin----〉colour modulation, lustre adjusting----〉stick----〉packaging, powder coat: Resin,filler,pigment,auxiliary---〉mixing---〉extrusion---〉cooling---〉smashing---〉sieving---〉 packaging.
Q:What kind of materials are needed to make refractory bricks?
Refractory materials generally refer to inorganic non-metallic materials with fire resistance above 1580℃. It plays an important role in metallurgy, nonferrous metals, chemical engineering, ceramics, and industrial production. Different industry needs different materials. You can turn to the knowledgeable internet.

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