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In the metallurgical, electroplating, and chemical industries, the recovery of zinc from hydrochloric acid waste liquid is both a crucial step in resource recycling and a challenge for environmental governance. Traditional precipitation methods suffer from low efficiency and secondary pollution,…

Benzoic acid, as an important organic acid, is widely used in food preservation, pharmaceutical synthesis, and the production of chemical intermediates. However, benzoic acid–containing wastewater generated during its production, if not effectively treated, can lead not only to resource wastage…

Phosphoric acid, as an important basic chemical raw material, is widely used in fertilizer production, food processing, electronics manufacturing, and the pharmaceutical industry. With the increasing demands for higher purity phosphoric acid from downstream industries, traditional phosphoric acid purification processes…

In the field of strategic metal resource recycling, rhenium, as a scarce refractory metal, has significant strategic value and economic importance due to its efficient separation and recovery. Facing the challenge of extracting rhenium from low-concentration solutions (such as 200…

In fine chemicals, pharmaceuticals, and advanced materials, high-precision and high-efficiency liquid–liquid extraction processes are critical to improving product quality and production efficiency. With its compact design, outstanding performance, and broad application adaptability, the Zhengzhou Tiei Extraction CWL50-M top-suspended centrifugal extractor…

In the fields of food processing, biopharmaceuticals, and fine chemicals, lactic acid is a critical organic acid with steadily growing market demand. However, traditional lactic acid extraction processes face multiple challenges, including low extraction efficiency, high energy consumption, limited product…