Mullite Insulation Brick for Ceramic Sintering Kiln and Glass Furnace Regenerator

High Performance Mullite Insulation Brick For Glass Furnace Regenerator And Ceramic Sintering Kiln

The magnesia content of magnesium oxide refractory brick is 90%-98%. The main products are dead-burned magnesia bricks, middle-grade magnesia bricks, high-purity magnesia bricks, fused magnesia bricks, and alkaline refractories with magnesia as the main crystal phase.

magnesium oxide refractory brick have high refractoriness. Sintered magnesia bricks use brick magnesia as raw materials. After crushing, batching, kneading, and molding, they are fired at a high temperature of 1550~1600°C. The firing temperature of high-purity products is at Above 1750°C. Unburned magnesia bricks are made by adding appropriate chemical binders to magnesia, after mixing, molding, and drying.

High Performance Mullite Insulation Brick For Glass Furnace Regenerator And Ceramic Sintering Kiln

The refractoriness of magnesium oxide refractory brick can reach more than 2000 °C, and the softening temperature under load varies greatly with the melting point of the cementitious phase and the amount of liquid phase produced at high temperature. Generally, the starting temperature of load softening of magnesia brick is between 1520~1600°C, while that of high-purity magnesia brick can reach 1800°C. The load softening start temperature of magnesia brick is not much different from the collapse temperature. The linear expansion rate of magnesia brick at 20~1000°C is generally 1.2%~1.4%, and it is approximately linear. When a liquid phase appears in the brick at high temperatures, it shrinks suddenly. The thermal conductivity of magnesia bricks is higher, second only to carbon bricks and silicon carbide bricks in refractory products, and it decreases with the increase of temperature.

The typical physical and chemical properties of various magnesium oxide refractory brick:

High Performance Mullite Insulation Brick For Glass Furnace Regenerator And Ceramic Sintering Kiln

magnesium oxide refractory brick production process:

The magnesia raw material is crushed into granules and powders, and after mixing according to a certain proportion, the binder is added and mixed to form a mud, and then formed into a fired magnesia brick through processes such as forming, drying and firing. The firing temperature of ordinary magnesia bricks is generally 1500~1650°C, and the firing temperature of high-purity magnesia bricks is as high as 1700~1900°C. The production process of chemically bonded magnesia bricks is basically the same, except that the chemical bonding agent is combined without high-temperature firing, and only proper low-temperature heat treatment is needed to make unburned magnesia bricks. 

The main usage of magnesium oxide refractory brick:

magnesium oxide refractory brick application
1. Alkaline open hearth furnace for steelmaking
2. Electric furnace bottom and furnace wall
3. Oxygen conversion lining
4. Non-ferrous metal metallurgy furnace
5. High temperature tunnel kiln
6. Cement rotary kiln lining
7. Heating furnace bottom and furnace wall
8. Regenerator of glass melting furnace

Non-ferrous metal industry
Smelting furnace working lining
Magnesia brick, magnesia alumina brick, magnesia chrome brick

Working lining of converting furnace
Magnesia brick, magnesia alumina brick, magnesia chrome brick

Refining furnace working lining
Magnesia brick, magnesia alumina brick, magnesia chrome brick
Glass industry
Fused magnesia bricks, direct combined magnesia chrome bricks, magnesia-zirconium bricks
Cement industry
Cement rotary kiln burning zone
Magnesia alumina spinel brick, magnesia calcium brick/magnesia dolomite brick, direct combined magnesia chrome brick, semi-direct combined magnesia chrome brick, magnesia chrome brick

Cement kiln transition zone
Magnesia alumina spinel brick, magnesia calcium brick/magnesia dolomite brick
Steel industry
Converter
Permanent lining: fired magnesia brick
Working lining: magnesia carbon brick

Electric stove
Permanent lining: fired magnesia brick
Working lining: magnesia carbon brick

Ladle
Working lining: magnesia carbon brick, aluminum magnesia carbon brick

RH furnace for refining outside the furnace
Working lining: fused and combined magnesia chrome brick, semi-recombined magnesia chrome brick, directly combined magnesia chrome brick

AOD furnace for refining outside the furnace
Permanent lining: fired magnesia brick
Working lining: Magnesia calcium brick/magnesia dolomite brick

VOD furnace for refining outside the furnace
Working lining: Magnesia-calcium brick/magnesia dolomite brick, fused and combined magnesia chrome brick, semi-recombined magnesia chrome brick, direct combined magnesia chrome brick, magnesia carbon brick

Mixing furnace
Working lining: magnesia brick, magnesia alumina brick, magnesia chrome brick

Lime kiln

Working lining: magnesia brick, magnesia alumina spinel brick, magnesia zirconium brick, magnesia chrome brick

Magnesia carbon brick                                                              Magnesia chrome brick

                    Magnesia alumina spinel brick                                  Silica brick

                  Silica mullite brick                                                        Light weight silica brick

Packaging for magnesium oxide refractory brick
1.Pallet+Paper or Steel angle bead+Paper board +Plastic or Steel belt +Plastic film
(1)Wooden pallet size:Usually0.92*0.92m(standard brick),but 1*1m (special shape brick) at most,
(2)Load weight of each pallet:Usually 1.5-1.7Tons, max 2.0 Tons.
(3)20 Foot Container can be loaded max 25-26Tons, about 13-16Pallets.

2.Can make the magnesia brick package according to customer's requirements.

Shipping for magnesium oxide refractory brick
1.FEDEX/DHL/UPS/TNT for samples.
2.By Sea for batch goods.
3.Customers specifying freight forwarders or negotiable shipping methods!
4.Delivery Time of magnesia brick:
(1)Magnesia brick Samples:3 days for common shape samples;15 days for special shape samples.
(2)Batch goods:Within 7-10 days for in stock magnesia bricks from ordering shipping space to deliver goods and within 20-30 days for NO in stock magnesia bricks.

Our company:

Henan Hongtai Kiln refractory is an independent manufacturer of refractories, heat resistant products and high temperature insulation materials which follows the tradition of refractory and heat resistant manufacturing in Xinmi, Henan, since 2002.

Our products include fire cement, fire bricks, refractory setting cements/mortars, plastic mouldables refractories, high alumina refractory products, zirconia refractory products, magnesia refractory products, silica refractory products, carbon refractory products, silicon carbide refractory products, acid resistant cements and refractory castables for use in industries including steel plants, heat and power stations, foundries both ferrous and non-ferrous, cement producers, lime producers, glass works, ceramics, coke plants, incinerators, renewable energy, chemical works, sugar refineries and petrochemical industry.

Our service:

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 ISO9001 quality management system certification and SGS certification. And the annual supply of shaped and unshaped refractory product is 28, 800-35, 000 tons.
3. 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.
4. Testing equipment:
Our company's testing equipments as follows:
High Temperature RUL Tester Bulk Density Tester The Pressure Tester Refractoriness Tester