The ultra-low temperature crusher has taken a series of effective measures to prevent material oxidation, mainly based on its ultra-low temperature environment and optimal working principle. The following are specific methods to prevent material oxidation:
1. Ultra low temperature environment
♦ Low temperature oxidation inhibition: The ultra-low temperature crusher uses a cold source such as liquid nitrogen to cool the material to a temperature far below room temperature, usually below -196 ℃. At such low temperatures, the molecular activity of the material slows down, the chemical reaction rate significantly decreases, and many chemical reactions, including oxidation reactions, almost stop, effectively preventing the oxidation of the material during the crushing process.
♦ Avoiding the influence of high temperature: Compared with high-temperature crushing, ultra-low temperature crushing avoids the adverse effects of high temperature on material properties, such as discoloration, denaturation, oxidation, etc. The low-temperature environment maintains the original properties of the material, ensuring the quality of the product.
2. Inert gas protection
Nitrogen atmosphere: In the ultra-low temperature crushing process, liquid nitrogen is often used as a cooling medium. Due to nitrogen being an inert gas that is not easily reactive with other substances, it provides a relatively inert gas environment for the material while cooling with liquid nitrogen, further reducing the chance of contact between the material and oxygen in the air, thereby reducing the risk of oxidation.
3. Rapid crushing and collection
♦ Efficient crushing: The ultra-low temperature crusher adopts a precision designed crushing mechanism, such as rotating blades, impact hammers, etc., to efficiently crush materials in a low-temperature brittle state. Due to the material being crushed into tiny particles in a short period of time, the exposure time of the material to the air is reduced, which lowers the possibility of oxidation.
♦ Quick collection: The crushed material is quickly collected and classified through an air flow sieve classifier. During this process, the airflow not only takes away the heat generated by crushing, but also reduces the contact time between the material and air, further preventing oxidation.
4. Sealing system design
Sealing performance: Ultra low temperature crushers usually have good sealing performance, ensuring that the material is in a closed state throughout the entire crushing process, reducing the contact between the material and the external environment, and effectively preventing oxidation.
In summary, the ultra-low temperature crusher effectively prevents material oxidation during the crushing process by providing inert gas protection in ultra-low temperature environments, rapid crushing and collection, and sealing system design. These measures not only ensure the quality of the product, but also improve the crushing efficiency and safety.