Extraction of germanium from
lead-zinc production waste by chemical and microbiological methods
Chem.
Met. Alloys 4 (2011) 206-212
https://doi.org/10.30970/cma4.0185
Iryna A. BLAYDA, Tetyana V. VASYLYEVA, Larysa I.
SLYUSARENKO, Valentyna F. KHYTRYCH, Iryna M. BARBA, Nataliya Yu. VASYLYEVA
The results of extraction of germanium from
lead-zinc production waste by direct acid leaching and microbiological leaching
by thiobacteria, using raw or previously annealed material, are compared. It
was found that the phase composition of the initial material influences the
yield of germanium leaching during the chemical treatment, e.g. the existence of germanium as isomorphous admixtures in phases
that are difficult to be opened. The use of thiobacteria for germanium leaching
allows transferring 80‑100% of the metal and accompanying components into
solution in 1‑2 days, independently of the phase composition of the raw
material. The role of microorganisms present in the initial
germanium-containing material in the processes of the so-called chemical
leaching of metals has been studied. The bacterial-chemical nature of
hydrometallurgical processes was determined for the application in
non-aggressive pH-range media as leaching solutions.
X-ray diffraction patterns
of the initial lead-zinc product
Keywords
Germanium / Leaching / Annealing /
Redistillation / Thiobacteria / Strains