What type of refractory materials do non-ferrous smelting enterprises use?

High-temperature converters generally use magnesia-chromium bricks, which can withstand temperatures up to 1400 degrees Celsius. It also has a high strength.

Different metallurgical furnaces have varying requirements regarding the types of refractory materials, and there are many kinds of such furnaces. Essentially, all types of refractory materials can be used in various non-ferrous metal smelting plants. And companies that produce refractory materials cannot manufacture all types of them; therefore, it would be much better if you could mention the names of your company’s products and then inquire with the appropriate manufacturers.

I heard that silicon nitride is used in aluminum smelting plants. My friend has a factory that produces silicon nitride; he told me that their main customers are aluminum plants both domestically and abroad.

Colored metal enterprises use almost all types of refractory materials; different metals and production processes require different refractory materials as well. Common ones include clay bricks, magnesia bricks, high-alumina bricks, carbon bricks, quartz, etc. There is a difference between acidity and alkalinity; the original poster can learn about it gradually.

This would require the use of different types of refractory materials, depending on the various smelting processes and methods for non-ferrous metals. Commonly available ones include clay bricks, high-alumina bricks, chromium-magnesium bricks, and spinel-magnesium bricks. It seems there is information on metallurgical furnaces on the forum.

I am quite familiar with the use of refractory materials in the steel industry, but I have never been in contact with non-ferrous metal smelting facilities. I have learned a bit about this from forums as well, but my understanding is still rather vague. I really hope to visit a larger non-ferrous metal smelting plant in person, but I don’t have any friends who work in that field...

Refractory materials required in the non-ferrous metallurgy industry: Magnesium-aluminum bricks, ordinary magnesium bricks, fully synthetic magnesia-chromium bricks, magnesia-chromium bricks, high-chromium castables, electrically fused and recombined magnesium bricks, high-quality magnesium bricks, magnesium-zirconium-calcium bricks, semi-recombined magnesium-aluminum bricks, silicon nitride-bonded silicon carbide bricks, forsterite bricks, unburnt magnesia-chromium bricks

I would like to ask the person above: In what types of equipment are magnesia-chromium bricks, magnesia-aluminum bricks, magnesia bricks, etc. used? And in which parts of those equipment?

You can also expand the scope of consultations on refractory materials: including their more widespread use in the cement industry.

Platinum can be used with zirconia crucibles...

Blast furnaces use clay bricks, magnesia bricks, magnesia-chromium bricks, and high-alumina bricks

Magnetic bricks are commonly used in the metallurgical furnaces for copper and lead smelting; chromium-magnesium bricks are used in critical areas, while high-alumina bricks are used for flues

In what types of equipment are magnesia-chromium bricks, magnesia-alumina bricks, and magnesia bricks used? In which parts of these equipment? They can be used in copper refining reverberatory furnaces; magnesia-chromium bricks are primarily used in key areas such as the furnace bottom, slag line, and furnace mouth. Magnesia bricks can be used in furnace walls, flues, and furnace roofs, while magnesia-alumina bricks can be used for constructing flues.

Magnesium-based bricks are used in the vast majority of copper smelting processes

In copper smelting, the main refractory materials used include clay bricks, magnesia bricks, and magnesia-chromium bricks (direct-bonded magnesia-chromium bricks). The front bed of the blast furnace is mainly made of magnesia bricks; converter furnaces use magnesia-chromium bricks, while reverberatory furnaces employ directly bonded magnesia-chromium bricks. The ventilation openings at the bottom of the furnace (brick stacks) and the insulation layer at the furnace bottom are constructed using clay bricks, laid with clay-based refractory mortar ； For the underfloor arch, first create the arch shape using refractory castables (or magnesia-chromia mortar), and then construct it with directly bonded magnesia-chromia bricks ； The interior of the furnace wall is lined with magnesia-chromia bricks (direct-bonded magnesia-chromia bricks are used below the slag line), while the back part is constructed from clay bricks. There is a 10 mm thick refractory fiber board between the partition and the clay bricks, and a filler layer is also provided. The furnace roof is built with magnesia-chromia bricks.

The copper smelting process takes place in a strongly oxidizing atmosphere, requiring refractory bricks with high oxidation resistance, such as magnesia-chromium bricks (direct-bonded and semi-rebonded, electrically fused) and magnesia bricks； Insulating refractory bricks such as high-quality clay bricks are used at the furnace bottom and in areas near the furnace shell ； High-alumina bricks are used in areas subject to high-temperature gas erosion, such as electric furnaces and the flue sections of furnace bodies ； For the slag line and molten pool areas, refractory bricks with strong erosion and slag resistance should be used: such as aluminum-chromium spinel bricks, etc. :)

1. Clay bricks, high-alumina bricks, chromium slag bricks, and magnesium-aluminum spinel bricks are used in the volatilization kiln； 2. Clay bricks and unfired refractory materials in zinc boiling furnaces ；

Choose the type of refractory brick based on the type of slag resulting from metal smelting: use alkaline bricks (magnesia-based) for alkaline slags, acidic bricks (silica-based) for acidic slags, and neutral bricks (alumina-based) for neutral slags