An analysis of the sodium chromate production process with chromic waste recycling

Zygmunt Kowalski (Institute of Chemistry and Inorganic Technology, Kraków University of Technology, Kraków, Poland)
Joanna Kulczycka (Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Kraków, Poland)
Małgorzata Góralczyk (Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Kraków, Poland)

Management of Environmental Quality

ISSN: 1477-7835

Publication date: 1 December 2005

Abstract

Purpose

This work seeks to present results of research which allowed the development of a technological system for the sodium chromate production process on the basis of a semi‐empirical equation.

Design/methodology/approach

The proposed technological method is based on determining the defined process parameters (independent variables) which allow the complicated process to be controlled using only a few parameters that determine the chromate charge composition

Findings

By using the equation it is possible to determine the composition of this charge, knowing only the results of analyses of the main component of the chromic ore (i.e. Cr2O3) and the values of coefficients X, a and b. In this way, the process parameters X, a and b can be adopted as independent control variables of the sodium chromate process.

Practical implications

The proposed method for the sodium chromate production process includes the substitution of natural chromic raw material with waste from different recycling types of chromic waste.

Originality/value

Using the control of sodium chromate production with chromic mud in‐process recycling, the system of process control presented has proved itself in industrial practice for over a year.

Keywords

Citation

Kowalski, Z., Kulczycka, J. and Góralczyk, M. (2005), "An analysis of the sodium chromate production process with chromic waste recycling", Management of Environmental Quality, Vol. 16 No. 6, pp. 615-626. https://doi.org/10.1108/14777830510623682

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Publisher

:

Emerald Group Publishing Limited

Copyright © 2005, Emerald Group Publishing Limited

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