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Chromium-containing silica materials
(2000-08-01)
Chromium-containing silica samples were obtained from soluble sodium silicate solutions in the presence of different chromium nitrate concentrations. Precipitation was carried out in ethanolic media. Gel precipitate was ...
Effect of chromium on magnetite formation
(1995)
Chromium-doped magnetite is the traditional catalyst used in the high temperature shift reaction in industrial processes. This work reports a method for preparing this solid, by heating chromium-doped iron(III)hydroxoacetates ...
High Carbon Ferro-chromium Production by Self-reducing Process: Effects of Fe-Si and Fluxing Agent Additions
(IRON STEEL INST JAPAN KEIDANREN KAIKAN, 2011)
The technology of self-reducing pellets for ferro-alloys production is becoming an emerging process due to the lower electric energy consumption and the improvement of metal recovery in comparison with the traditional ...
Hexavalent chromium removal using aerobic activated sludge batch systems added with powdered activated carbon
(Water Research Commission, 2009-12)
The addition of powdered activated carbon (PAC) has been proposed as a suitable technique to protect activated sludge against toxic wastewaters. However, the literature data describing the combined effect of PAC addition ...
Applications of the Rietveld method to quantify the crystalline phases of Portland cement clinker doped with nickel and chromium
(J C P D S-INT CENTRE DIFFRACTION DATA, 2008)
The effects of chromium or nickel oxide additions on the composition of Portland clinker were investigated by X-ray powder diffraction associated with pattern analysis by the Rietveld method. The co-processing of industrial ...
EFFECT OF CHROMIUM ON MAGNETITE FORMATION
(Baltzer Sci Publ BvAmsterdamHolanda, 1995)