METHOD OF OBTAINING BASIC CHLORIDE OR COPPER (II) NITRATE Russian patent published in 2013 - IPC C01G3/00 C01G3/05 C01G3/08 

FIELD: chemistry.

SUBSTANCE: invention relates to technology of obtaining copper (II) salts. Method includes direct interaction of metal oxide with water solutions of hydrochloric or nitric acid with intensive mixing, including in presence of glass beads as grinding agent. Process is carried out with range of initial concentrations of acids from 0.4 to 2.7 mol/kg and mole ratio with copper (II) oxide in the range from (0.8:1) and to (1.8:1), with weight ratio of initial charge and glass beads (1:0.2)÷(1:1), at temperatures 15-50°C to the moment of process self-termination under current control over amount of accumulated copper (II) salts and acid spent on said purposes. After that, reaction mixture is separated from glass beads and filtered. Separated hard phase of reaction mixture is washed with 0.2-0.5 mol/kg solution of acid-reagent, after which it is returned for charge of repeated process. Washing solution is combined with reaction mixture filtrate. Obtained mixture is neutralised with 1.2-3.3 mol/kg water ammonia, dosed in small portions in such a way that pH does not exceed value 6.5-7.1. Product hard phase, precipitated during neutralisation, is left in contact with liquid phase for 12-24 hours, after which it is filtered, washed with distilled water and dried. Water solution of ammonium nitrate or chloride is used for other purpose.

EFFECT: method ensures high rate of obtaining and high output of main salts at room or close to them temperatures.

5 tbl, 26 ex