Brown Alumina For Refractory Castable

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Product Description:

Specifications

(1)High Al2O3 Content: 95%min
(2) Professional manufacture
(3) Hot sale overseas
(4) Pass ISO9001:2000.

Brown fused alumina size sand


Product introduction:


The main component of brown fused alumina size sand includes: high quality bauxite, anthracite, scrap iron, its fabrication adopts modern new unique technology. It has short grinding time, high efficiency, good economic returns, low price. Brown fused alumina is superior to other abrasives because  it has conchoidal fracture, the edge and corner of this conchoidal are sharp. These edges and corners can form new edge and corner in continuous grinding. The most important characteristics of brown fused alumina are high hardness, high-density,stable chemical


properties and strong self-sharpening. So, it is the best choice for sand blasting process and grinding and polishing, at the same time, brown fused alumina can be used to sandblasting derusting cleaning artifacts and refractory material.


Physicochemical index:


Name

Specification

Chemical compositions(%)

Magnetic material(%)

Al2O3

Fe2O3

SiO2

TiO2

YN-BFA size sand

0-1mm

1-3mm

3-5mm

5-8mm

8-12mm

≥95

≤0.3

≤1.5

≤3.0

25-0mm

10-0mm

50-0mm

30-0mm

≥95

≤0.3

≤1.5

≤3.0

Physical property

Chemical property: neutral

Refractoriness: 2100

Bulk density: 1.53-1.99g/cm3

True density: 3.95-3.97g/cm3

Mohs hardness: 9.0

1,Grain-size composition: coarse grain ≤5%,fine grain≤5%,basic grain 90% can pass screen mesh or made on the basis of requirements of customer.

Packaging & Shipping

25kg,1000kg ,1MT or on the basis of requirements of customer


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Q:What are the applications of refractory busway?
Refractory busway is designed for the power supply in fire-fighting equipment, and it can not be used for other purposes. As the generatrix has good heat resistance, thermal insulation, and the heat of the busway can not be emitted, it can not be used long-term at full capacity. In addition to fire-resistant busway, other bus lines can be operated long-term at full load.
Q:What are the specific steps of stirring the steel ladle castable?
Steps are as follows. 1 Compulsory mixer is used to stir the castable and bags, rope and other debris can not mix in the castable when stirred. 2, Castable should be unpacked on the scene. Stirred volume depends on the capacity of the mixer. Castable should be accurately measured and put into a blender. 3 The process of first dry mixing and then wet mixing is adopted. After the castable is added to the mixer, it is dryly mixed for 2 minutes, add about 5.2 to 5.5 percent of water and continue to add water while stirring. Water that is 80% of the total should be added, and then decide whether to continue to add or not depending on the consistence (noting that the water must be clean water and sewage can not be used). Then it is wetly mixed for 4 minutes and stirred for not less than 6 minutes at one time, until castable is even. In general, the bottom is slightly dry and the wall of the ladle is slightly dilute (the amount of water is only for reference). 4, The amount of water and mixing time should be controlled strictly when stirred to ensure that the needs of the consistency are met. If castable is too thin, it will seriously affect the quality of the material. The stirred volume, stirring time and water that is added should be consistent and they can not suddenly be thick or suddenly be thin. If the consistency does not meet the requirements, the castable should be put back to the mixer and stirred with appropriate water or dry materials. 5, It should be stirred evenly and casting should finish in 20 minutes, in order to avoid sclerosis, affecting structural strength of ladle lining 6, After each completion of construction, varieties of castable should be changed and the mixer should be cleaned 7, Stirring can stop in halfway. If the mixer breaks down and it can be repaired in a short time, some of the materials have to be removed before the machine is opened. If the machine can be repaired on time, castable refractory should all be removed.
Q:What kinds of fireproof and fire retardant materials are there?
general classification of fire retardant materials will use A, B in the home improvement supplies. A has the best flame resistance, followed by B.
Q:What's the classification of refractory material?
Magnesium aluminum is complex and mainly seeing what classification standard is like according to the appearance shape can be divided into two categories, setting and not setting according to the acid alkali can be divided into acidic, magnesia, high aluminum, ramming expected, spinel, spray coating, plastic, just the quality of the jade, daub material according to the chemical composition is divided into, such as clay, neutral and alkaline according to the operation mode can be divided into different castable, magnesium, calcium, magnesium chrome
Q:Who knows about the differences between 3M fireproofing materials and ShiLiDe materials?
Advertising materials can be divided into fireproofing and non-fireproofing ones which can not tell the differences with naked eyes. You can ask 3M to provide test reports or go to a the third party test organization SGS to do flame retardant test, maybe I can help you. Mineral wool board is harmful to human body, will lead to chronic poisoning, the quality of it is bad! You must pay attention to it! It can not be used in chemical and pharmaceutical plants.
Q:I wanna ask you, which level is b1 fireproof and thermal inuslation matertial ??
What you said is the pixel! Only that has b1b2. Level b1 is the fireproofing level b1, because the particle does not belong to the fireproofing material. Only can fire retardant. The wholesale of all kinds of thermal insulation material and construction need to look at the name.
Q:How long is the duration of fire resistance of autoclaved flyash-lime bricks?
How long is the duration of fire resistance of autoclaved flyash-lime bricks?
Q:What refractories are used in various parts of the blast furnace.
Blast furnace from top to bottom has the throat, hearth staves, waist, bosh, hearth and furnace bottom. the specific structure is as follows: The throat is the first to be affected by the impact and abrasion, generally use high-density alumina bricks. the upper and central portion of temperature furnace is only 400 ~ 800 ℃, the area with high alumina bricks and silicate bricks. The lower part of furnace is subject to erosion and dust erosion alkali metal vapor due to high temperatures, it is required in such case to use high quality clay brick,high alumina brick,carborundum brick,corundum brick that is slag resistance and alkali resistance, temperature resustant and wearproof. Furnace bosh temperature reached 1400 ~ 1600 ℃, serverly eroded by slag,vapor, flush. so we use carborundum brick and reaction-bonded silicon carbide brick. Bosh temperature reaching1600 ~ 1650 ℃, using alumina brick, corundum brick or silicon carbide brick. the temperature of Hearth near the upper portion of the outlet zone at 1700 ~ 2000 ℃, use of silicate bricks and corundum castable graphite filler, silicon carbide bricks. In 1450 Silly twitch bottom temperature sealing die of hunger slander bet phoenix astringent preserved Grade ~ 1500 ℃, use of graphite bricks and microporous carbon bricks, now use more corundum brick, corundum mullite brick and synthetic mullite brick. x26lt;P class x3d "share-btn"x26gt;
Q:what materials can make external wall fireproofing paint have the fireproofing effect
Fire retardant coating material is composed of the base material (film forming substance), pigments, ordinary paint additives, fire retardant agent and dispersion medium. Except fire retardant agent, the function of other coating component is same to the commom coating, but the performance and the dosage have special requirements.
Q:How is the fire endurance of the fireproof paint?
time is different according to the amount of fireproof paint used. fire resistance time :0.5 hours 1.5 hours 2.0 hours 2.5 hours thickness: 0.45mm 0.9 mm 1.4 mm 2.0 mm 2.8 mm Amount: 0.79kg / m2 1.5 kg / m2 2.3 kg / m2 3.3 kg / m2 4.6 kg / m2

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