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With the rapid advancement of global industrialization, the generation of zinc-containing waste—such as zinc dross, spent batteries, and electroplating sludge—continues to increase year by year. These wastes are not only an environmental challenge but also a valuable “urban mine” rich…

N-Methyl-2-pyrrolidone (NMP), as an excellent polar solvent, is widely used in high-end manufacturing industries such as lithium batteries, semiconductors, and polymer materials. However, the large volume of NMP-containing wastewater generated after its use not only creates environmental pressure but also…

Naphthalenesulfonic acid is an important chemical intermediate based on a naphthalene ring structure linked with sulfonic acid groups. It is widely used in the production of dyes, pharmaceuticals, pesticides, concrete water reducers, and other chemical products. During the manufacturing process…

Battery black mass, obtained after crushing and sorting spent lithium-ion battery cathode materials such as lithium nickel cobalt manganese oxide (NCM) and lithium cobalt oxide (LCO), contains valuable metals including nickel, cobalt, lithium, and manganese. However, these metals are closely…

In industries such as pharmaceuticals, pesticides, polyurethane synthetic leather, aramid fiber production, and electronic chemicals, N,N-Dimethylformamide (DMF) is widely used as an important solvent. However, DMF is completely miscible with water in any proportion and has a high boiling point…

Scandium is a silvery-white rare metal that plays an irreplaceable role in advanced fields such as aerospace, solid oxide fuel cells (SOFCs), metal halide lamps, and laser crystals. However, scandium is highly dispersed in nature and difficult to concentrate. Its…