<abstract xmlns="http://www.w3.org/1999/xhtml">In this paper, research on the possibilities of sodium sulphate (Na2SO4) separation from other substances in the filter ash sample is presented. The research material contains six components that differ in chemical composition and density. The possibilities of Na2SO4 separation using dry and wet methods were studied. The dry method was based on separation with a centrifugal air classifier at four cut size limits. The wet method was based on the dissolution of water-soluble components, filtration of insoluble components, and drying the products. The sulphur content of the individual products was determined using both methods. The aim of the research was to determine which method is more suitable for separation of the material in a way that most of the material would contain as little sulphur as possible and the rest of the material would contain concentrated sulphur. The wet method proved to be more successful. The product with mass fraction 33.1% of the total mass, obtained from the aqueous solution, contained 8.39% sulphur after filtration and drying. The water-insoluble component, with mass fraction 66.9% of the total mass, contained 0.56% sulphur. The dry method with the centrifugal air classifier proved to be less successful in comparison with the wet method. The particles containing Na2SO4 are very similar in size and density to the other components of the material, so the separation to the desired extent was not achieved.</abstract>

In this paper, research on the possibilities of sodium sulphate (Na2SO4) separation from other substances in the filter ash sample is presented. The research material contains six components that differ in chemical composition and density. The possibilities of Na2SO4 separation using dry and wet methods were studied. The dry method was based on separation with a centrifugal air classifier at four cut size limits. The wet method was based on the dissolution of water-soluble components, filtration of insoluble components, and drying the products. The sulphur content of the individual products was determined using both methods. The aim of the research was to determine which method is more suitable for separation of the material in a way that most of the material would contain as little sulphur as possible and the rest of the material would contain concentrated sulphur. The wet method proved to be more successful. The product with mass fraction 33.1% of the total mass, obtained from the aqueous solution, contained 8.39% sulphur after filtration and drying. The water-insoluble component, with mass fraction 66.9% of the total mass, contained 0.56% sulphur. The dry method with the centrifugal air classifier proved to be less successful in comparison with the wet method. The particles containing Na2SO4 are very similar in size and density to the other components of the material, so the separation to the desired extent was not achieved.

Removal of Na2SO4 from a Filter Ash

Faculty of Natural Sciences and Engineering, Department of Geotechnology, Mining and Environment

Materials and Geoenvironment

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

In this paper, research on the possibilities of sodium sulphate (Na2SO4) separation from other substances in the filter ash sample is presented. The research...

Removal of Na₂SO₄ from a Filter Ash

Article Category: Original scientific paper

Online veröffentlicht: 04. Juni 2020

Seitenbereich: 215 - 221

Eingereicht: 27. Jan. 2020

Akzeptiert: 29. Jan. 2020

DOI: https://doi.org/10.2478/rmzmag-2019-0020

Schlüsselwörter
sulphur, centrifugal air classifier, filtration, filter ash, waste material

© 2019 Blaž Janc et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Removal of Na2SO4 from a Filter Ash

Article Category: Original scientific paper

Online veröffentlicht: 04. Juni 2020

Seitenbereich: 215 - 221

Eingereicht: 27. Jan. 2020

Akzeptiert: 29. Jan. 2020

DOI: https://doi.org/10.2478/rmzmag-2019-0020

Schlüsselwörtersulphur, centrifugal air classifier, filtration, filter ash, waste material

© 2019 Blaž Janc et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Removal of Na₂SO₄ from a Filter Ash

Schlüsselwörter
sulphur, centrifugal air classifier, filtration, filter ash, waste material