INORGANICCHEMICALSINDUSTRY ›› 2014, Vol. 46 ›› Issue (12): 1-.
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JI Zhu
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Published:
Abstract: According to the published patents and papers,present development situation for new technologies of sodium chromate in China,including industrialization,development and innovation of chromite calcium-free roasting,chromite hydrometallurgy,production of sodium chromate with carbon ferrochrome as raw material,and chromite acid-leaching oxidation process,was summarized.The merits,demerits,and prospects of each method were discussed.The industrialization,development and innovation of chromite calcium-free roasting,including:industrialization of calcium-free roasting,improvements and new ideas of calcium-free roasting process(including:the improvement of reactor and change of process flow,improvement of neutralization method,utilization of aluminum mud,devanadation,two-stage calcination,alkali mixing after preheating, chromic slag treatment,and fly ash reusing),less alkali roasting process,sodium chromate-carbon ferrochrome synthetic process,catalyst application,and oxygen roasting,were introduced.
Key words: sodium chromate, new technology, calcium free roasting
CLC Number:
TQ136.11
JI Zhu. Present development situation for new technologies of sodium chromate in China:Ⅰ[J]. INORGANICCHEMICALSINDUSTRY, 2014, 46(12): 1-.
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