FIELD: chemical industry; methods of production of cuprum (I) thiocyonate.
SUBSTANCE: the invention is pertaining to the field of chemical industry, in particular, to chemical technology of inorganic substances. The product produced by this method can be used as a pigment for the antifouling compositions of the catalytic agent of the processes of the organic synthesis, the stabilizing agent for the artificial fibers, for preparation of the electrolytes of the galvanic copper plating, for production of other copper compounds. Copper (I) thiocyonate is produced by the crystallization from the reactionary water solution containing copper (II), thiocyanide, the reactant- reducer. As the source of copper (II) uses the waste solutions of pickling of the printed-circuit boards or the waste electrolytes of the galvanic copper plating of the various chemical compositions. At that pH in the reactionary water solution is set from 0.0 up to 9.5. The presented invention allows to reduce the materials inputs for production of the cupper (I) thiocyonate, to expand the arsenal of the copper- containing materials used for production of cupper (I) thiocyonate, to increase efficiency of the process of production of cupper (I) thiocyonate, to utilize the toxic wastes and to reduce expenditures on the environmental protection at production of printed-circuit boards and electroplated coatings.
EFFECT: the invention ensures expansion of the arsenal of the copper-containing materials used for production of the copper (I) thiocyonate and the increased efficiency of its production, utilization of the toxic wastes, reduction of the materials input, the environmental protection costs at production of the printed-circuit boards and electroplated coatings.
3 cl, 14 ex
