Non-ferrous metal wet parsing solvent extraction process
at present for the classification of the nonferrous metals are mainly heavy non-ferrous metals, light metals, precious metals, rare metals, metal, etc. Five categories. Besides, there are secondary resources, such resources, also known as renewable resources, is mainly refers to non-ferrous metal waste residue and so on, this part also contains a large number of resources of nonferrous metal, if can make full use of, in terms of resource utilization and environmental protection will have a special meaning.
the method for extracting common non-ferrous metal pyrometallurgy and wet method, solvent extraction, electricity, metallurgy, etc.
pyrometallurgy is the use of high temperature metal or its compounds extracted from ore metallurgical process. No solution to participate in this process, so it is also known as dry process of metallurgy. This operation is commonly under the condition of high temperature, including roasting, melting, reduction, blowing, fire refining, vacuum refining process, and also includes some auxiliary operations such as casting and dust collecting.
hydrometallurgy, mainly using a solvent with the help of a chemical reaction. ( Including oxidation, reduction, neutralization, hydrolysis and complexation reaction) , extraction and separation of raw materials of metal metallurgical process, also called water metallurgy. Is metallurgical process in aqueous solution, including solution leaching, solid-liquid separation, purification and solution in the main process of metal extraction.
power metallurgy is used electricity extracted from ore or other materials, metal recycling and refining of metallurgical process. With electric heating method and electrolysis method. Heating method: is the use of electrical energy into heat energy for smelting method. Electrolysis method: using the electrochemical reaction, the metal from solution or melt containing metal salt precipitation. Electrochemical metallurgy by the electrolyte can be divided into aqueous electrolysis and molten salt electrolysis, according to the purpose of electrolytic divided into electrolytic extraction and electrolytic refining.
three ways have their performance advantages in the operation, but with the continuous improvement of technology, wet become the main use of non-ferrous metals extraction solvent extraction process. Solvent extraction are mainly selects the suitable extractant, using centrifugal extraction machine, such as the ore leaching, leaching liquid and extraction agent injection centrifugal extraction machine at the same time, through the role of the centrifugal force rapid mixing separation, complete the extraction of non-ferrous metal.
non-ferrous metal solvent extraction process flow diagram:
centrifugal extraction machine was chosen as extraction equipment, non-ferrous metal because compared with other traditional extraction equipment, the working principle of centrifugal extraction machine the distinction that having essence. Centrifugal extraction machine is rely on centrifugal force for hybrid separation, mixing and mass transfer time is short, high separation efficiency, capacity bigger and more energy efficient, the development prospect of a better future!
more details centrifugal extraction machine, visible article 'centrifugal extraction machine'