Tabiiy fanlar

NEW REAGENTS SK-1, SK-2 BLOWERS FOR EXTRACTION OF PRECIOUS METALS FROM COAL DEPOSITS

brown coal, peat, soap stock, amino alcohols, rare earth and non-ferrous.

Authors

  • Сухроб ЮСУПОВ Докторант Институт общей и неорганической химии АН РУз, Uzbekistan

The article contains data on the results of synthesized blowing agents SK-1, SK-2 used in the enrichment and flotation of non-
ferrous and precious metal-containing coals from deposits of the Republic of Uzbekistan. Di- and triethanolamine are the bases of
foaming agents, which were obtained under similar conditions. The reagents effectively reduce the surface tension of the solution
to σ= 28.5 MN/m and have a stable foaming capacity ѵ=265 ml; surface tension of reagent SK-2 σ= 30.5 MN/m; foaming
capacity ѵ=260 ml. The stalagmometric method was used to determine the emulsifying properties of the foaming agent obtained.
A scheme for the extraction of metals has been developed, consisting of: crushing, the size of coal is brought to the opening of
grains of minerals and sulfur; firing in an oven at a temperature of 500
o С, volatilization of carboxyl groups and sulfur
components, as a result of which the metals pass into the sulfate group; grinding process - coal in ball mills is brought to a
particle size of 150 microns; leaching process - extraction of metals and their compounds into solution using HCl and HNO3,
then the metals are separated and isolated; The proposed blowing agents SK-1, SK-2 allow the integrated use of natural coal and
can solve the important problem of ash and slag waste disposal and significantly reduce emissions of toxic elements into the
atmosphere.