Bauxite is widely used in iron and steel industry, mainly in the following aspects:

I. Blast furnace lining

Bauxite refractory is an important part of blast furnace lining. Because of its high fire resistance (up to 1780℃) and good thermal shock resistance, it can withstand the alternating action of high temperature and rapid cooling and rapid heating in blast furnace, and effectively protect the lining structure. High-alumina refractory bricks and castables are often used in key parts such as the bottom and hearth of blast furnace.

II. Ladle refractories

In ladle, bauxite refractory is used to make the lining of ladle, which can withstand the erosion and erosion of high temperature molten steel. High alumina castable has excellent corrosion resistance and high strength, which can prolong the service life of ladle.

III. Converter and electric furnace

Bauxite refractories are also widely used in converters and electric furnaces. Its high refractoriness and good slag resistance enable it to withstand the erosion of high temperature slag and resist the destruction of chemical reactions in the furnace.

IV. Heating furnaces and hot stoves

In heating furnaces and hot blast stoves, bauxite refractories are used in furnace walls, furnace tops and other parts. Its low thermal expansion coefficient and good thermal shock resistance make it stable in frequent temperature changes and reduce the damage caused by thermal expansion and cold contraction.

V taphole and furnace top

Bauxite refractories are also used in taphole and top of blast furnace. These parts need to withstand the corrosion of high-temperature molten metal and slag, and bauxite refractories have high refractoriness and corrosion resistance, making them ideal materials.

VI. Refractory castable

Bauxite castable is widely used in furnace lining, furnace top, taphole and other parts in iron and steel industry. Its high strength and good construction performance enable it to adapt to complex construction environment and shape.

VII. Other applications

Bauxite is also used to make refractory products such as refractory fibers and refractory bricks, which play the role of heat insulation, heat preservation and protection in high-temperature equipment in steel production.

To sum up, bauxite has become an indispensable refractory in iron and steel industry because of its excellent fire resistance, corrosion resistance and thermal shock resistance, and is widely used in blast furnace, converter, ladle, heating furnace and other equipment.