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METHOD FOR PRECIPITATION OF CHROMIUM AND/OR VANADIUM FROM WASTE SULPHURIC ACID FROM THE TITANIUM DIOXIDE PRODUCTION
METHOD FOR PRECIPITATION OF CHROMIUM AND/OR VANADIUM FROM WASTE SULPHURIC ACID FROM THE TITANIUM DIOXIDE PRODUCTION
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机译:从二氧化钛生产中的废硫酸中析出铬和/或钒的方法
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ABSTRACT OF THE DISCLOSUREWaste sulphuric acid resulting from the titanium dioxideproduction is concentrated by evaporation followed by an agingprocess during which the metals, except chromium and vanadium, areprecipitated. In order to sufficiently precipitate chromium andvanadium in a reasonably short time, the evaporated waste sul-phuric acid is mixed with aluminum having an active surface, whichmay be achieved by comminution e.g. cutting or pulverization notmore than 4 hours before adding it to the waste sulphuric acid.
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