Small Chlorine Furnace "Series Part 2": Reaction Principles in the Chlorine Furnace
Impurities can be removed in a chlorine furnace! This explains the method of vaporizing and separating the generated chlorides.
In the previous session, we introduced the background of the development of a small chlorine furnace. This time, we will explain the reaction principle (chlorine volatilization) that allows for the removal of impurities in the chlorine furnace. There are mainly two factors that cause impurities to mix in the powder process: 1) derived from raw materials, and 2) derived from equipment. In both cases, the boiling points of pure metals are high (e.g., Fe = over 2800°C, Cu = over 2500°C), and they cannot be removed by simple heating. Therefore, chlorine (Cl2) or hydrogen chloride (HCl) is supplied into the furnace to convert metal impurities into chlorides. The reaction formula for iron is as follows: 2Fe + 3Cl2 → 2FeCl3 Fe2O3 + 6HCl → 2FeCl3 + 3H2O Many metals exhibit a significant decrease in boiling point when they become chlorides. Utilizing this property, the method of separating the generated chlorides by vaporizing and volatilizing them is known as the chlorine volatilization method. Our small chlorine furnace employs this principle and has the unique capability to selectively remove various metal impurities in a dry process, which is not found in conventional electric furnaces. *For more details, please download the PDF or feel free to contact us.*
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On the one hand, the question "Isn't it dangerous to flow corrosive and toxic gases like chlorine and HCl at high temperatures?" is certainly valid. Next time, I will explain why it can be handled safely in a high-temperature environment, focusing on the key points of equipment design and operation. Stay tuned. *For more details, please download the PDF or feel free to contact us.
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Our company integrates three technologies: "electricity," "equipment," and "chemistry," using our unique know-how to develop innovative heating furnaces and other equipment. We handle various electric furnaces (heating furnaces) such as carbon furnaces, multi-atmosphere furnaces, metal furnaces, and chlorine furnaces, leveraging our proprietary high-temperature electric furnace technology. We are not just an equipment manufacturer; we are a strategic development partner that supports innovative manufacturing with advanced heating, looking ahead to the standards of the next decade alongside our customers.