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In the production of fine chemicals, pharmaceutical intermediates, and new energy materials, the water washing stage has always been a critical step affecting both product purity and production efficiency. The three-stage countercurrent washing process, with its advantages of high washing…

Secondary resources such as electronic waste, spent batteries, tailings, and metallurgical slags contain large quantities of valuable recoverable metals including copper, aluminum, nickel, cobalt, and lithium. Thanks to its high recovery efficiency and lower environmental impact, hydrometallurgy has become one…

Known as the “King of Magnets,” NdFeB magnetic materials are widely used in industries such as new energy vehicles, wind power generation, and consumer electronics. During the manufacturing process, various types of waste materials—including machining sludge and oil-containing scrap—are generated,…

In industries such as chemical fiber production, polyimide film manufacturing, pharmaceuticals, and electronic materials, Dimethylacetamide (DMAC) is widely used as an excellent solvent due to its strong polarity and high boiling point. However, DMAC is completely miscible with water at…

In the chemical and pharmaceutical production industries, N,N-Dimethylformamide (DMF), as a “universal solvent,” is widely used in various applications. However, DMF wastewater treatment has long been a global challenge for the industry. This type of wastewater is characterized by the…

In the fields of hydrometallurgy and new energy materials, nickel sulfate is a core raw material for lithium battery cathode materials and the electroplating industry, and its purity directly determines the quality of end products. However, in industrial production, nickel…