ABOUT THE POSSIBILITY OF USING THE RED SLADGE IN THE SYNTHESIS OF INORGANIC PIGMENTS COFFE-BROWN COLOUR
EV Ivanyuk, VI Suprunchuk - Sworld-Us Conference proceedings, 2023 - proconference.org
EV Ivanyuk, VI Suprunchuk
Sworld-Us Conference proceedings, 2023•proconference.org… It is investigated the conditions for the formation of chromophore compounds when using
red sludge, a waste product of alumina production. It is shown that in the presence of SiO2
and Na2O, the synthesis temperature decreases, which can be seen on the derivatograms
already at 1273 K, and upon high-temperature firing, mixed zinc-ferrum-chromium and
ferrum-chromiumaluminum spinels are formed, which form the brown color of the pigment.
In the presence of TiO2, spinel-like structures of the TiO2-[Fe,Ti]O4-Fe2O3 type are formed …
red sludge, a waste product of alumina production. It is shown that in the presence of SiO2
and Na2O, the synthesis temperature decreases, which can be seen on the derivatograms
already at 1273 K, and upon high-temperature firing, mixed zinc-ferrum-chromium and
ferrum-chromiumaluminum spinels are formed, which form the brown color of the pigment.
In the presence of TiO2, spinel-like structures of the TiO2-[Fe,Ti]O4-Fe2O3 type are formed …
Abstract
It is investigated the conditions for the formation of chromophore compounds when using red sludge, a waste product of alumina production. It is shown that in the presence of SiO2 and Na2O, the synthesis temperature decreases, which can be seen on the de
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