tion of noble metals from this type of the raw material is the presence ... tron activation analysis is a reliable method for investigation of the gold ... THE DEVELOPMENT OF A METHOD FOR EXTRACTING NOBLE METALS 17 SiO
The invention discloses a method for extracting high purity polyprenol from plant needle leaf raw material. The method utilizes needle leaves of pinus, picea, abies, cunninghamia and other plants as raw materials; the raw ...
Process of extracting gold and silver from gold ores and mining by-products, ... The method has a high ... The process for the extraction of gold and silver by raw materials leaching in the ammonium thiosulfate ...