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Citric acid is a kind of organic acid. Solvent extraction is a common method for extracting citric acid. The solvent extraction process is greatly affected by the fermentation raw materials. When pure substances such as glucose are used as raw…

Against the backdrop of global resource shortages and increasing environmental pressure, platinum group metals (PGMs), as strategic key metal resources, have become a key focus of countries’ competitive layout for efficient recovery and recycling. Platinum group metals include ruthenium, rhodium,…

In the global zinc smelting industry, more than 80% of zinc production comes from the hydrometallurgical process. Its typical process includes oxidative roasting, acid leaching, high acid leaching, iron removal, purification and electrolysis. However, when processing high-iron zinc roasted sand,…

Benzoic acid, also known as benzoic acid, is widely used in medicine, food, chemical industry, etc. It can be used to prepare a variety of plasticizers, etc. Due to the low cost of benzoic acid, its downstream product sodium benzoate…

Naphthalenesulfonic acid wastewater is a common chemical organic wastewater. A large amount of this type of wastewater is generated during the production process of chemical plants. Naphthalenesulfonic acid wastewater contains high organic matter and generally has high COD, making it…

For lubricating oil refining, base oil regeneration and other operations, the use of NMP solvent extraction is very effective. In terms of equipment, the use of CWL-M centrifugal extractor is more effective. NMP is a solvent with high solubility and…