Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: siarczan cynkowy

Sortuj według:

Ogranicz wyniki do:

Utilization of metallic wastes from the zinc sulfate production

Jarosiński A.

Polish Journal of Chemical Technology

2004

Vol. 6, nr 3

21-24

In the work the possibility of copper materials processing derived from the production of zinc salts is presented. The described results of the tests on the basic processes used in the procedure, consist of three steps: leaching by ammonia and ammonium chloride, the decomposition of the copper ammine complex and the precipitation of the copper oxide and the ammonia recovery. The solution after leaching (100 - 130g Cu/dm3) was dropped into the stirred sodium hydroxide solution (200g/dm3) and copper(II) hydroxide was precipitated. It was found that the efficiency of the copper removal from the solution, depended on the temperature. At the solution temperatures, higher than 90°C, the yield of the process was near 100%. The final product, CuO, was achieved by the way of calcinations and its purity was about 99,9%. The product is suitable for the fodder addition and mineral fertilizer. The process was tested on the laboratory scale, as well as in the pilot plant.