Title: Method for producing chromic oxide by using sludge of containing chrome
Application Number: 200410012289 Application Date: 2004.05.14
Publication Number: 1696064 Publication Date: 2005.11.16
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C01G37/033,C02F11/00
Applicant(s) Name: Gao Zhiyuan Address: 050021
Inventor(s) Name: Cui Guiying
Attorney & Agent:
Abstract:
     A process for preparing Cr2O3 from the Cr contained sludge includes water washing, press filtering for dewatering, drying, calcining to obtain coarse Cr2O3 product, removing the water-soluble impurities by use of hot water, centrifugal drying, baking, grinding and sieving.
Time: 8
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