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Separation, treatment and utilization of inorganic residues of chemical pulp mills
The major inorganic solid residues of chemical pulp mills include green liquor dregs, various lime residues, recovery boiler fly ash, and salt cake produced at the chlorine dioxide generator. Only a small proportion of ...
Removal of hazardous trace elements from recovery boiler fly ash with an ash dissolution method
The presence of hazardous trace elements (HTE) in the chemical recovery cycle of Kraft pulp mills is the main obstacle for the utilization of the inorganic residues of the process. Electrostatically precipitated (ESP) ...
Effective removal of hazardous trace metals from recovery boiler fly ashes
The objective of this study is to introduce a treatment sequence enabling straightforward and effective recovery of hazardous trace elements from recovery boiler fly ash (RBFA) by a novel method, and to demonstrate the ...