Shanghai Yingyong Machinery Co., Ltd. successfully supported a rare earth processing company in Myanmar in completing an efficient calcination project for rare earth oxalates. By leveraging our advanced electric rotary kiln technology, the client achieved a significant improvement in the purity of their rare earth products, while also optimizing the production process and enhancing overall operational efficiency.
Raw Material: Oxalate Rare Earth
Processing Capacity: 1-2 tons per hour
Calcination Temperature: 800-1100°C
The production system of this project consists of three primary subsystems. The first subsystem is responsible for pre-processing the raw materials and includes processes such as crystalline conversion and acid roasting. The second subsystem is dedicated to preparing lithium carbonate, which involves various processes such as leaching, purification, lithium precipitation, carbonation, thermal decomposition, refining, and fine grinding. The last subsystem is responsible for preparing the by-product sodium sulfate, including neutralization, evaporation crystallization, centrifugation, and drying.
Oxalate rare earth, as an important intermediate in the extraction of rare earth metals, typically exists in a slurry form with high moisture content. Therefore, stable and efficient pretreatment and calcination processes are crucial for enhancing the purity of rare earth products. In this project, Shanghai Yingyong Machinery Co., Ltd. designed and implemented the following process flow based on the client’s specific requirements:
Filtration and Dewatering: First, the oxalate rare earth is treated using high-efficiency filtration equipment to significantly reduce the free moisture in the raw material, creating optimal conditions for subsequent thermal treatment.
Electric Drying: The dewatered rare earth material is further dried using an electric dryer, ensuring that the moisture content is reduced to the required level before entering the calcination stage. This enhances the calcination efficiency and the quality of the final product.
High-Temperature Calcination: The dried oxalate rare earth is fed into a customized electric rotary kiln for calcination. The calcination temperature is strictly controlled within the range of 800-1100°C, ensuring the phase transformation and crystal reconstitution of the rare earths, thereby maximizing their chemical purity.
Rapid Cooling: The high-temperature material is quickly cooled using a water cooling system to prevent secondary damage to the rare earth crystal structure, ensuring the stability of the final product.
Finished Product Storage and Packaging: The cooled rare earth products are transported via an automated conveyor system into sealed storage bins, followed by precise packaging to ensure the quality and safety of the product during transportation and storage.
After the completion of the project, the client highly praised Shanghai Yingyong Machinery Co., Ltd. for their comprehensive service and equipment performance: "From the initial raw material processing to the final product delivery, Shanghai Yingyong Machinery Co., Ltd. provided a complete and efficient solution. The final calcined rare earth products, upon testing, achieved a purity of over 95%, significantly exceeding our expected target."
In modern industrial production, the electric rotary kiln has become a crucial piece of equipment for optimizing calcination processes and improving product quality. Our electric rotary kilns are specifically designed for a variety of high-temperature calcination processes and are widely used in industries such as metallurgy, chemical engineering, and construction materials. They are especially suited for processing high-value products such as rare earth materials, ceramics, and lithium battery materials.
Precise Temperature Control: With an advanced electric control system, our electric rotary kiln ensures precise temperature regulation, guaranteeing uniform calcination of materials at optimal temperatures.
High Efficiency and Energy Saving: Featuring independently controlled multi-zone heating modules, the kiln can be adjusted flexibly according to process requirements, maximizing energy savings and reducing operational costs.
Durable Design: Made from high-quality materials such as stainless steel, chromium-nickel alloys, centrifugal castings, and advanced non-metallic materials (e.g., quartz glass and carbon-based materials), our kilns are built to withstand long-term high-temperature environments.
Superior Environmental Performance: Powered by clean energy, our electric rotary kiln eliminates the pollution issues associated with traditional fuels, meeting environmental standards and helping businesses achieve green production.
Our electric rotary kilns are not only capable of handling a wide range of raw materials but can also be customized to meet specific process requirements, catering to industries such as metallurgy, chemicals, construction materials, and environmental protection. Whether for high-temperature calcination of rare earth materials or the resource recovery of nickel-containing slag, our kilns provide stable and reliable production support.
If you're looking for efficient and energy-saving calcination equipment, contact us for more product information and customized solutions to help your business achieve more efficient production and higher-quality products.
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