International Standard CaO Content Magnesia-Hercynite Brick for Aluminum from 's Professional

Magnesia-carbon bricks are made of high-melting alkaline oxide-magnesium oxide (melting point 2800℃) and high-melting carbon materials that are difficult to be infiltrated by slag, and some non-oxide additives will be added during the production. As a composite refractory material, magnesia carbon bricks effectively utilize the strong slag corrosion resistance of magnesia and the high thermal conductivity and low expansion of carbon, which compensates for the shortcomings of poor spalling resistance of magnesia.
Scope of application:
Magnesia-carbon bricks are mainly used for the lining of converters, AC electric arc furnaces, and DC electric arc furnaces, and the slag line of ladle.

Advantage:
• High tempreture resistance

• Strong slag resistance

• Good thermal shock resistance

• Low creep under high tempreture

The use of magnesia-carbon brick on electric furnace
At present, the wall of electric furnace is almost all constructed by magnesia-carbon brick, so the service life of electric furnace is determined by the life of magnesia-carbon brick. The main factors that determine the quality of magnesia-carbon brick include the purity of magnesia, the type of impurities, the grain binding state and grain size of magnesia-carbon brick from MgO.The purity, degree of crystallization and scale size of the flake graphite as the source of carbon introduction;Usually, thermosetting phenolic resin is used as binder. The main influencing factors are the amount of addition and carbon residue.Now have shown that adding antioxidants magnesia carbon brick can change and improve its matrix structure, but when used under normal operating conditions of the furnace, antioxidants are not magnesia carbon brick of the necessary raw materials, and only used for high FeOn arc furnace slag, such as the use of direct reduced iron or have irregular parts and electric furnace hot parts of the oxidation, add various kinds of metal antioxidants can become an important part of magnesia carbon brick.
The corrosion behavior of magnesia-carbon brick at slag line shows the formation of obvious reaction dense layer and decarburized loose layer.The reaction dense zone also becomes the slag invasion zone, which is the erosion zone where the high temperature liquid slag infiltrates into the interior of the magnesia-carbon brick after a large number of pores are formed after decarburization.In this region, FeOn in the slag is reduced to metallic iron, and even the desorption phase and intergranular Fe2O3 in solid MgO are reduced to metallic iron.The penetration depth of the slag into the brick is mainly determined by the thickness of the decarburized loose layer and usually terminates at the place where the graphite remains.Under normal conditions, the decarburization layer in magnesia-carbon brick is relatively thin due to the presence of graphite.
There are two ways of steel outlet of electric furnace: tilting steel outlet of trough and steel outlet of bottom of furnace.When using the discharging tank to tilting the steel, magnesia-carbon brick is basically not used, and Al2O3 or ZrO2 quality is selected, and C, SiC and Si3N4 and other non-oxygen substances are added.When the bottom of the furnace is used, the outlet is composed of an external sleeve brick and an internal tube brick.At the bottom of the furnace, the steel outlet is made of magnesia-carbon brick pipe brick. The pore size of the pipe brick is determined by the furnace capacity and the time of steel drawing, and the inner warp is generally 140 ~ 260mm.
The middle block and low block magnesia-carbon brick were used in the outlet of an electric furnace in a steel mill, and the sintered magnesia-carbon brick was replaced by the sintered magnesia-carbon brick on both sides of the copper outlet, and the furnace life was increased from about 60 to more than one time.The magnesia-carbon brick at the slag line after use is kept intact and does not stick slag.The slag line does not need refilling furnace, which reduces the labor intensity and improves the purity and productivity of molten steel.
3, aluminum magnesium carbon brick in the use of ladle
When MGO-C brick is used in refining ladle furnace and ladle, it is mainly used in clearance and slag line.According to the operating conditions, the refractory materials used in these parts must have high temperature resistance, heat shock resistance, resistance to slag erosion caused by mechanical erosion.So in the past, magnesia-chrome refractories were used for these parts, but because of the pollution of chromium to the environment, the amount has been reduced, and now magnesia-carbon bricks are used.

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.