Henan Hongtai Kiln Refractory Co.,Ltd. |
Verified Suppliers
|
|
Alumina magnesia spinel refractory brick for cement rotary kiln
Alumina magnesia spinel refractory brick is a magnesia-alumina brick made of magnesia-alumina spinel as the main mineral in order to improve the thermal stability of magnesia-alumina brick.
Alumina magnesia spinel refractory brick • instructions for use
Magnesium alumina spinel brick has high melting point, small
thermal expansion, low thermal stress, good thermal shock
stability, and also has stable chemical properties, and has strong
resistance to alkaline slag.
The application of alumina magnesia spinel refractory brick is
mainly reflected in the following two aspects:
The magnesia-alumina spinel brick is used in cement rotary kiln
instead of magnesia-chrome sand, which not only avoids chromium
pollution, but also has good anti-spalling property.
Second, it is used to make ladle castable material to greatly
improve the corrosion resistance of steel plate lining.So that it
is widely used in steelmaking refractory materials.The preparation
of high quality presynthetic spinel provides a new raw material for
the production of amorphous and formative high-purity refractories.
Alumina magnesia spinel refractory brick • production process
The advantage of magnesia-alumina spinel brick is good thermal
stability, in the process of use will react with the clinker, and
then form a very thin calcium aluminate protective layer on the
surface of the brick, so that the liquid is not easy to penetrate,
its anti-spallation performance is better than the direct
combination of magnesia-chrome brick.The service life of the
cooling zone and transition zone in the kiln can be extended twice
as long as that of the magnesia-chrome brick directly
combined.However, its corrosion resistance is slightly inferior to
that of directly bonded magnesium-chromium bricks. Meanwhile,
sintered spinel bricks are easy to hydrate, resulting in a higher
coefficient, and the temperature at kilns is higher than that of
directly bonded magnesium-chromium bricks.Pay attention to these
problems when using.
Index | Magnesia alumina brick | Magnesia alumina spinel brick | Periclase spinel brick | High-purity magnesia alumina brick | ||||
Item | ML-80A | ML-80B | LMJ-A | LMJ-C | LMJ-C | LPJ-80A | LPJ-80B | LCML-86 |
MgO% | 80 | 80 | 80 | 75 | 70 | 82 | 80 | 86 |
Al2O3% | 5-10 | 5-10 | 8-15 | 8-15 | 8-15 | 5-10 | 5-10 | 5-10 |
0.2MPa refractoriness under load °C≥ | 1600 | 1580 | 1700 | 1650 | 1600 | 1620 | 1600 | 1700 |
Cold crushing strength MPa ≥ | 45 | 40 | 35 | 35 | 35 | 39.2 | 39.2 | 35 |
Apparent porosity %≤ | 18 | 20 | 17 | 18 | 19 | 18 | 18 | 16 |
Thermal shock resistance shock(11000C-wather)times≥ | 20 | 15 | 10 | 7 | 5 | 10 |
The new type alumina magnesia spinel refractory brick is used in the transition zone of the new dry-process kiln, the specific location is the lower transition zone, 0.8~2.2m away from the kiln.The penetration and erosion of alkali, chlorine and sulfur in the rotary kiln is serious, and the phenomenon of overheating is frequent. The life of the refractory brick used in the lower transition zone is generally only 3~4 months.After using the new type of magnesia-alumina spinel brick, it has been used normally for 6 months up to November this year, reaching the customer's requirements.It can be seen that the new type of magnesia-alumina spinel brick has excellent corrosion resistance of alkali, chlorine and sulfur and cement clinker liquid phase, and is suitable for use in the transition zone of cement kiln where strong alkali erosion and overheating occur frequently.
Packaging
1. 1 ton bags in container, 25 MT/20'FCL.
2. 25kg bags in container, 25 MT/20'FCL
3. 25kg bags in ton bags, then in container, 25 MT/20'FCL
4. as the customer' request
Packaging of our alumina magnesia spinel refractory brick
1.on wooden pallets with plastic cover: wooden pallet size :930*930
or 1000*1000mm,
2.Load weight of each pallet: 1.5-2.0 tons,
Shipping of our alumina magnesia spinel refractory brick
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.
1.Timely response,
Timely response to your inquiry, multiple choice recommendations based on your demand,quickly respond mails and provide solutions.
2.Free sample of dry ramming mass
Sample and trial order are accepted for the quality evaluation
3.Strict quality control
Arrange production on time and control quality strictly.
4.Shorter delivery time.
Book the earliest vessel or plane to guarantee the delivery time.
5.Professional Services
Provide all the detailed news and pictures from order to delivery;offer relative export documents and original certificate if needed;warm and considerable after-sale service.
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.
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, Korea, Pakistan,
kazakhstan, other southeast Asian countries and regions.
Customer visit :
Habby Guo
MP: +86-17886663539(WhatsApp)
Website: www.ht-refractory.com
Email: habby(at)ht-refractory.com