Improvement in Process in Precipitating and Recovering Metals from Hydro-metallurgical Solutions.

摘要

2801. Merrill, C. W. Feb. 3. Cyaniding; wet processes of extracting metals; precipitating.- In precipitating metals from solutions in motion, the precipitant is subjected to mechanical treatment for the removal of any deterrent coating from the surface of the particles, and the mixture is conducted without rest to a filter. In cyaniding, zinc dust in a dry or emulsified state is fed to a receiver Z and passes, together with the solution, to a tank U, and the mixture passes through a grinding-apparatus A placed on either the suction or delivery side of a pump P. The mixture is then forced to the top of a filter F whence the filtrate flows into a tank E. The grinding-apparatus may be interposed at any point between the receiver and the filter, or it may discharge directly into the filter through an independent inlet. The Provisional Specification also refers to the use of chemical means for the removal of the coating.