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High Alumina Andalusite Brick for HBS SiO2 Content 38% and APPARENT POROSITY 22%

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Henan Hongtai Kiln Refractory Co.,Ltd.

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High Alumina Andalusite Brick for HBS SiO2 Content 38% and APPARENT POROSITY 22%

Place of Origin : Henan China

Shape : Brick

Material : Alumina Cement

SiO2 Content (%) : <38%

Al2O3 Content (%) : >60%

MgO Content (%) : 0.8-1.2

CaO Content (%) : 0.01

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

CrO Content (%) : 0.1-0.3

SiC Content (%) : 1.2-1.4

Model Number : HZ65, HZ60, HZ57, HZ53

Brand Name : Hongtai

Processing Service : Bending, Welding, Punching, Decoiling, Cutting, Moulding

Product name : andalusite brick

Application : Industrial Furnaces

Color : Light Yellow

Raw material : Al2O3

Certificate : ISO9001

Size : Customized Size

Sample : Freely Provided

BULK DENSITY : 2.3/cm3

Feature : Thermal Shock Resistance

APPARENT POROSITY : <22

Packaging Details : 1.Wooden pallet.
2.Wooden / bamboo case (box).
3.International standard seaworthy exportable packing.
4.Further packing information will be based on customer's requirements.

Supply Ability : 3000 Ton/Tons per Month

Price : $300.00 - $500.00/tons

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Product Description

Andalusite refractory bricks

Andalusite refractory bricks have good volume stability and resistance to rapid cooling and heating, strong creep resistance, high load softening temperature, resistance to slag iron penetration and good chemical stability. In addition to reducing fuel consumption and increasing stability, andalusite refractory bricks can also save more than 40% of the consumption of general refractory materials. Andalusite refractory bricks are mainly used for the lining of industrial kilns and thermal equipment with drastic temperature changes such as hot blast stove body, torpedo car, ladle water, glass melting furnace, electric furnace roof and heating furnace.

High Alumina Andalusite Brick for HBS SiO2 Content 38% and APPARENT POROSITY 22%

As a high temperature structural material, hot blast stove brick requires very strict creep rate at high temperature.Andalusite and sillimanite have excellent high temperature structural strength properties.Table 1 lists the performance comparison between andalusite and mullite, bauxite, corundum and other refractory products.It can be seen from Table 1 that the high temperature
creep rate of andalusite brick is better than that of bauxite, corundum and most mullite bricks. Andalusite is one of the ideal materials for low creep refractories.

Differents

Sillanite, andalusite and kyanite have the same heating phase transformation behavior, and they all decompose to form mullite and SiO2 phases, the latter can form either quartzite or glass phase.The difference is that the volume expansion of sillimanite and andalusite into mullite is small.While kyanite is very large, its reaction is carried out as follows:
High Alumina Andalusite Brick for HBS SiO2 Content 38% and APPARENT POROSITY 22%

Since sillimanite and andalusite have only a small volume effect in the hot mullite process, they can be directly used to make bricks.It can be burnt or not.The content of Al2O3 of sillimanite brick is generally 50% ~ 60%. Its remarkable advantages are higher volume stability at high temperature, softening point under load and thermal shock resistance than that of high alumina brick.In modern large melting furnace, in order to ensure the stability of the melting furnace structure must use sillimanite brick.
Sillimanite bricks are usually fired below the temperature at which sillimanite decomposes.In the use process, if the use temperature is slightly lower than the sillimanite decomposition temperature, the brick volume stability is very good, there is no obvious volume effect;If the temperature is higher than the decomposition temperature, sillimanite will decompose into mullite and liquid phase, and a little volume expansion can offset the contraction phenomenon caused by the production of liquid phase, and maintain a relatively stable volume.
Mullite products can be obtained by high temperature firing, that is, firing at a temperature higher than the decomposition temperature of sillimanite and andalusite, and the volume expansion of brick during firing can be controlled well, and the products with superior performance can be obtained.The results show that the microstructure of brick made by sillimanite and andalusite without prefiring is better.This can be explained as: the pre-fired clinker forms a mullite crystal network, which will be destroyed when crushed, and it is impossible to form a mullite binding network during further sintering, which will reduce the
compactness and high temperature performance of the product.

Specification

Item			Index
Item				75 Mulite brick	70 Mulite brick	65 sillimanite brick	60 sillimanite brick	65 andalusite brick	60 andalusite brick
Al₂o₃ %	≥	75	70	65	60	65	60
Sio₂%	≤	23	28	33	38	33	38
Fe₂o₃ %	≤	0.3	0.3	0.5	0.6	0.9	0.8
Bulk Density g/cm³	≥	2.7	2.65	2.45	2.3	2.45	2.3
Apparent porosity %	≤	17	17	22	23	22	23
Cold Crushing Strength	≥	140	120	80	80	80	80
Refractoriness under load (0.2Mpa, 0.6%) ℃	≥	1700	1680	1650	1600	1650	1600
Reheating linear change(1600℃×8h) %		0.2	0.2	0.2	0.2	0.2	0.2

Packing & Delivery

Packaging of powder shape or raw material products
1. 1 ton bags in container, 25 MT/20 'FCL.
2. 25 kg bags in container, 25 MT/20 'FCL
3. 25 kg bags in ton bags, then in container, 25 MT/20 'FCL
4. as the customer' request
Packaging of Bricks
1.on wooden pallets with plastic cover: wooden pallet size :930*930 or 1000*1000 mm,
2.Load weight of each pallet: 1.5-2.0 tons.

Shipping
1.Our packaging is as per customer’s request
2.Normal goods delivered by sea transport
3.Sample shipping by express
4.We will shipping and delivery goods timely, quality and quantity guaranteed, and also in accordance with the contract and customer's requirement completely.

Delivery:
15-30 days working day for large quantity. The shipment we will arrange as soon as possible. Of course, if it is a custom
products, the shipping time will delay.
Sample:
Usually by EMS, DHL, UPS, TNT, FedEx. Anyway you like. Bulk order: Usually by sea.
Payment:
It can be through T/T, L/C at sight. The specific terms determined according to the quantity of the goods, etc.
Your inquiry related to our product & price will be replied within 24 hours.
Export:
Our products have been exported to many countries: Australia, Chile, USA, Russia, UK, Indonesia, etc., good quality have be
approved by our clients.

Company Profile

Henan HongTai kiln refractory co., LTD. Main products are high alumina brick, clay brick, fused zirconium corundum brick, fireproof ball lightweight insulation brick, wear-resistant pouring material, corundum pouring material, low cement high strength pouring material, impermeable material, self-flowing material, plastic material, and various types of refractory materials.For different industries, the cement industry with anti-flaking high-alumina bricks, alkali resistant bricks, phosphate bricks;Boiler industry USES all kinds of brand wear-resisting brick, corundum brick, mullite brick and other finalizing materials.The company insists on "product quality is the life, enterprise integrity is the foundation", in the fierce market competition, won many users' trust and praise.The products are sold all over the country, as far as Vietnam, India, South Korea, Pakistan, Kazakhstan and other southeast Asian countries and regions.

Henan HongTai kiln refractory co., LTD. : "quality first, reputation first, customer first: it is our aim."Scientific management, strong technical force, perfect testing means, advanced technological equipment and stable product quality are the guarantee of quality service. Henan HongTai kiln refractories co., LTD sincerely hopes to cooperate with you hand in hand and in good faith.

Why Choose Us

1.Strong professional:
Our company has thirty years producing experience in refractory products. Our manager will supervise on a various refractories production materials, process control, quality supervision and package delivery, and ensure the products are 100% qualified.
2.Annual supply:
Our company has passed ISO 9001 quality management system certification and SGS certification. And the annual supply of shaped and unshaped refractory product is 28, 800-35, 000 tons.
3.Export experiences:
Now we have gained a global sales network reaching Russia, South Korea, Vietnam, Pakistan, Bulgaria, France, India, Egypt, Congo, Angola, South Africa etc.
4. Production equipment:
Production and testing equipment are new, complete and automated or semi- automated. Such modern facilities and equipment have provided the fine technical guarantee for the production and testing.
5. Testing equipment:
Our company's testing equipment as follows:
High Temperature RUL. Tester
Bulk Density Tester
The Pressure Tester
Refractoriness Tester
Our competitive Advantage:
1.Competitive Price. Make the products competitive in your market.
2.Quick Response:We promise quick response at the very first moment when we received your request. 3.Superior Customer Service:The company provides after sales service ensuring customer’s satisfactions,we believe in Long term partnership bringing loyalty.
4.We had been on this filed for many years and we have our own research team,the production process could be controlled strictly.
5.We have developed stable customer base overseas and kept long-term cooperation.

FAQ

1. How can you control your quality?
For each production processing, we have complete QC system for the chemical composition and Physical properties. After production,
all the goods will be tested, and The quality certificate will be shipped along with goods.
2. What's your delivery time?
It usually needs about 15 days- 30 days after receiving the deposit.
3.Do you have any experiences of export?
Yes,and Now we have gained a global sales network reaching Taiwan, Russia, Korea, Vietnam, Pakistan, Bulgaria, French, India,
Congo, Angola, South Africa, and so on.
4. Do you provide free samples?
Yes, we can provide a free sample for testing, If we have sample in stock, The quantity based on the material type, The buyer should bear all the shipping costs.
5. Can we visit your Company?
Yes, certainly. You are very welcome to China and we will be honored to have a customer and friend.

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