Refractory products with magnesite as the main mineral component.According to the different composition of raw materials, it can be divided into: magnesia brick made of magnesia magnesia brick with brick making, magnesia aluminum brick with a small amount of extra grade bauxite or industrial alumina, magnesia carbon brick with a certain amount of graphite powder, magnesia silicon brick made of high silicon magnesia magnesia with poor quality.Compared with other refractory bricks, magnesia bricks have a higher refractoriness, up to over 2000℃, a higher softening temperature under load, higher mechanical strength at high temperature, and good resistance to chemical attack by alkaline slag containing iron oxide and calcium oxide.

The content of magnesium oxide in the product is about 85%.Al2O3 content is 5% ~ 10%, with magnesite as the main crystalline phase, magnesia-alumina spinel as the secondary crystalline phase (as the main bonding phase) of alkaline refractory materials.Apparent porosity is generally 15 ~ 18%.The coefficient of thermal expansion is 10.6×10-6/℃.Better thermal shock resistance than the corresponding magnesia brick.Due to the distribution of magnesia-alumina spinel with higher melting point in the matrix, its high temperature strength is higher, and the initial temperature of softening under load is above 1580℃.The slag resistance is also good.Generally with high quality sintered magnesia as granular material, adding in a certain proportion of magnesia with bauxite or light burning bauxite clinker or industrial alumina composed of fine powder, through mixing, molding and sintering and produced.

Magnesium aluminum bricks • Instructions for use
Magnesium bricks are mostly used in the metallurgical industry.Because of good thermal stability and high high temperature strength, magnesia-aluminum brick is mainly used in the top of open hearth furnace and other important parts of steelmaking.High purity magnesia brick is used in the corrosion prone area of converter and outside furnace refining furnace.Magnesia-carbon brick is mainly used in the important parts of converter, electric furnace and outside furnace refining furnace.Magnesia-silica brick or magnesia-olivine brick with higher SiO2 content can be used in regenerative chamber of open hearth furnace and glass melting furnace and firing zone of cement rotary kiln.Melt combined with magnesia brick is commonly used in the key parts of serious erosion in electric furnace, outside furnace refining furnace and non-ferrous metal smelting furnace.
Magnesium aluminum brick • production process
The production process of magnesia-alumina brick is basically the same as that of burnt magnesia-alumina brick, but a certain proportion of industrial alumina or super-grade alumina clinker is added into the blend material.The content of Al2O3 in magnesia-alumina brick is generally 5 ~ 10%.Bauxite is usually mixed with magnesia according to a certain proportion of fine grinding, into the matrix of the brick, there are also the use of prior synthesis of spinel and then batching brick production method.The sintering temperature of magnesia-alumina brick is about 30 ~ 50℃ higher than that of magnesia-alumina brick.
The manufacturing process of burnt magnesia brick and unburnt magnesia brick is the same as that of other refractory bricks, including crushing, crushing, batching and mixing, forming, drying and firing.But the sintering temperature of magnesia brick is higher than other kinds of bricks, generally 1550 ~ 1600℃, and the sintering temperature of high purity products is 1750℃, or even higher.If CaO content is high in magnesia, brick materials must be trapped to eliminate the harmful effect of CaO and improve the molding performance of brick materials.In addition to the unfired magnesia brick without firing process, other technology and fired magnesia brick are basically the same.

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 SK37 High Alumina 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 SK37 High Alumina 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.

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