Selection of Technological Variants of Sodium Chromate (VI) Production Process with the Use of Chromic Waste
B. Walawska*, Z. Kowalski**
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*Institute of Inorganic Chemistry, Gliwice, Poland
**Institute of Chemistry and Inorganic Technology, Cracow University of Technology, Cracow, Poland
Pol. J. Environ. Stud. 2000;9(2):103–111
Various variants of the technological concept of using chromic waste as a substitute of natural raw materials, i.e. chromium ore and dolomite, in the standard process have been proposed. The object (process) function, valid in the researched area, was determined by assuming material balance equations (which describe each of above-mentioned technological nodes) and by using the relations determined on the basis of experiment results. To work out this func-tion the collections of values characterising this function and a classification of these values were created.