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Metallurgical Industry
Specific application of refractory materials in non-ferrous metal smelting
Furnace lining and furnace protection:
In high-temperature smelting environments, refractory materials are often used as furnace linings to protect the furnace from high temperatures, molten metals, and chemical reactions.
For example, in copper smelting, lead smelting, and zinc smelting, the refractory materials of the furnace lining must withstand the erosion of high-temperature molten metals and severe thermal shock. Refractory bricks, refractory mud, and other refractory materials are used to form the furnace lining.
Application in pyrometallurgy:
Copper smelting: The smelting temperature of copper ore smelting is relatively high (usually between 1200°C and 1400°C), and high temperature-resistant and corrosion-resistant materials are needed to protect the furnace body and prevent the molten metal and other chemicals from corroding the furnace lining.
Lead smelting: Lead smelting usually also requires high-temperature melting treatment, and refractory materials must be able to withstand the erosion of lead-containing molten metal. In lead smelting, refractory bricks are often used for the lining of high-temperature furnaces.
Zinc smelting: The temperature in the zinc smelting process is often higher (can reach more than 1500°C), and refractory materials are required to not only withstand high temperatures, but also resist the corrosion of molten zinc.
Application in electrolytic smelting:
In the electrolytic smelting process (such as aluminum electrolysis), refractory materials are used to withstand the high temperatures generated by strong currents, especially the lining of the electrolytic cell.
The temperature in the aluminum electrolytic cell is usually between 900°C and 1000°C. The cell body will be in contact with molten aluminum and electrolyte. Refractory materials must have excellent thermal shock resistance and chemical stability to maintain long-term operation.
Common types of refractory materials
Bauxite Brick:
Bauxite bricks are made of bauxite and are suitable for smelting processes under medium temperature (about 1500°C). They are widely used in copper smelting, lead smelting, etc.
Chromite Brick:
Chromite bricks contain chromium minerals and have excellent high temperature resistance and chemical corrosion resistance. Due to their high temperature resistance and corrosion resistance, chrome bricks are widely used in high temperature smelting equipment, such as copper smelting furnaces and lead smelting furnaces.
High Alumina Brick:
High Alumina Brick has good high temperature resistance and chemical stability, and is often used in high temperature smelting furnace linings for non-ferrous metals such as aluminum, zinc, and copper.
Refractory mud and refractory coating:
In addition to brick-type refractory materials, refractory mud and coating are also common refractory materials in the smelting process. These materials can fill the gaps in the furnace lining and enhance the sealing and high temperature resistance of the furnace body.
Carbon Refractory: Carbon Refractory has excellent resistance to high temperature and chemical corrosion, and is especially suitable for some smelting processes that require high temperature and strong chemical reactions.