How to make magnesia brick

Magnesia Brick Manufacturing Process: 

The manufacturing process of magnesia brick includes the following steps:

1. Break and smash: 

Crushing is the process of processing large pieces of material into ideal particle size materials. 

2. Ingredients (weighing): 

The raw materials are prepared in a predetermined proportion and mixed in a strong sand mixer. The order of feeding is magnesia aggregate – carbon fiber – binder – carbon raw material. 

3. Mixing: 

Mix thoroughly to get perfect coating. Add mixture made in step (B) and remix the batch intensively. Now add powder Resin (item 9), then Hexamine (item 10) and mix once again. 

4. Molding: 

Use a molding machine to make the mixture into bricks.

5. Drying:

Use a drying oven to dry the bricks for several hours.

6. Firing: 

Fire the bricks in a kiln at temperatures of 1550 to 1600 degrees Celsius. 

7.Finishing: 

The final step is to grind and polish the bricks to get the desired shape and size.

Types of magnesia brick:

Magnesia bricks can be divided into two categories: sintered magnesia bricks (also known as fired magnesia bricks) and chemically combined magnesia bricks (also known as unburned magnesia bricks). Magnesia bricks with high purity and firing temperature are called direct-bonded magnesia bricks due to the direct contact of periclase grains; Bricks made of fused magnesia as raw materials are called fused re-bonded magnesia bricks.

Uses of Magnesia Bricks:

Magnesia bricks are used in steelmaking furnaces, electric furnace bottom and wall, and high temperature tunnel kiln. Magnesia bricks are also used as heat storage room lattice bricks in glass kilns.

Magnesia brick is used for permanent layers in steel making converters, AOD furnaces, and more. Magnesia brick is also used to line steel ladles and Basic Oxygen Furnaces (BOFs). Magnesia bricks can be used in a variety of applications, depending on the type of brick being used. Common uses include furnaces, ladles, secondary refining vessels, and cement and glass making kilns.

Magnesia Brick for sale

The most important steps need to be considered to avoid or reduce the possibility of magnesia bricks hydration are:

1). Magnesia bricks must be transported in a container to protect the material against moisture.

2). Magnesia bricks should be stored inside storage rooms where it is dry, free of frost, ventilated, and with a temperature between 10°C and 30°C. Note that magnesia bricks storage underneath a tarpaulin cover outside is not sufficient.

3). Bricks may not be stored for more than four weeks prior to installation and preheating.

4). Lining should be protected against moisture during installation and preheating.

FAQ:

What is magnesia brick?

Magnesia brick is an alkaline refractory brick made of magnesia as the main component and periclase as the main crystal phase. Its magnesium oxide content is 91%-97%. Magnesium bricks have high refractoriness, and have good corrosion resistance to iron oxides, alkaline slag and high-calcium fluxes.

What is the effect of magnesia in brick?

A small quantity of magnesia in brick earth imparts yellow tint color to bricks and decreases shrinkage. But excess of magnesia leads to the decay of bricks. It causes unsoundness in brick if present in excess amounts. burning.

What is the composition of magnesia bricks?

MgO-C bricks are composed of magnesia clinker, flake graphite, antioxidants, resin components, etc., and have high resistance to corrosion, spalling, and slag penetration thanks to the characteristics of their constituents.

How are magnesia carbon bricks made?

Magnesia-Carbon brick is resin-bonded brick made from dead-burned or fused magnesia and graphite. Anti-oxidant is added if required. Our control over bonding agents mean that these products are classed as eco friendly in terms of steel production.

Why is manganese used in bricks?

Manganese is sometimes used in brick composition as a colorant. Manganese staining is a form of efflorescence that develops when moisture in the wall draws salts and color from the brick composition to the surface of the masonry. As the water evaporates, color from the manganese is left behind.

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