METHOD FOR SEPARATING AND RECOVERING PLATINUM GROUP FROM PLATINUM GROUP-CONTAINING HYDROXIDE

摘要

PURPOSE: To provide a method for obtaining a solution containing As and Sb of a certain degree substantially innocent to the solvent extraction and separation of a post process from a neutralization precipitate, containing platinum group and various impurities, and containing platinum, palladium and rhodium. ;CONSTITUTION: The neutralization precipitate containing platinum, palladium, rhodium and the impurities such as copper, nickel, iron, lead, arsenic, antimony, bismuth, tellurium, chromium is suspended in water, next hydrochloric acid is added thereinto to adjust the pH of the suspension to 1.5-2 and the suspension is solid-liquid separated.;COPYRIGHT: (C)1996,JPO