Chemical reclamation of waste green foundry sand and its application in core production
The disposal of Waste Foundry Sand (WFS) poses a significant challenge for the foundry industry today, primarily due to its composition of metal oxides (Al2O3, Fe2O3, MgO, CaO, and Na2O) and sand. These metal oxides, categorized as loosely and strongly bound clays, are considered impurities in core...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-06-01
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| Series: | Sustainable Chemistry for Climate Action |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772826924000014 |
| _version_ | 1797242926409973760 |
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| author | Mohd Moiz Khan S.M. Mahajani |
| author_facet | Mohd Moiz Khan S.M. Mahajani |
| author_sort | Mohd Moiz Khan |
| collection | DOAJ |
| description | The disposal of Waste Foundry Sand (WFS) poses a significant challenge for the foundry industry today, primarily due to its composition of metal oxides (Al2O3, Fe2O3, MgO, CaO, and Na2O) and sand. These metal oxides, categorized as loosely and strongly bound clays, are considered impurities in core production. This study proposes a chemical reclamation technique for WFS using fresh acid solutions or acidic industrial effluent. Experiments were conducted to remove the loosely and strongly bound clays from the WFS, optimizing parameters such as acid concentration, sand to acid loading, temperature, stirring speed, and reaction time to achieve optimal performance. The quality of the reclaimed sand was evaluated using various foundry standard tests, including determination of clay contents, compressive strength, Grain Fineness Number (GFN), Loss on Ignition (LOI), Acid Demand Value (ADV), and scanning electron microscopy. The reclaimed sand exhibited a loosely bound clay content of 1.5 %, oolitic content of 5.5 %, a grain fineness number of 55, a loss on ignition of 1.92 %, and an acid demand value of 1.5 ml/100 g of sand. Field trials demonstrated that the reclaimed sand can be effectively used for core production at an economical rate. |
| first_indexed | 2024-04-24T18:46:59Z |
| format | Article |
| id | doaj.art-0292b9421a354ebc88c82f92435ff4a6 |
| institution | Directory Open Access Journal |
| issn | 2772-8269 |
| language | English |
| last_indexed | 2024-04-24T18:46:59Z |
| publishDate | 2024-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Sustainable Chemistry for Climate Action |
| spelling | doaj.art-0292b9421a354ebc88c82f92435ff4a62024-03-27T04:53:18ZengElsevierSustainable Chemistry for Climate Action2772-82692024-06-014100038Chemical reclamation of waste green foundry sand and its application in core productionMohd Moiz Khan0S.M. Mahajani1Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, India; Department of Chemical Engineering, National Institute of Technology Srinagar, Srinagar, 190006, India; Corresponding author.Department of Chemical Engineering, Indian Institute of Technology Bombay, Mumbai, 400076, IndiaThe disposal of Waste Foundry Sand (WFS) poses a significant challenge for the foundry industry today, primarily due to its composition of metal oxides (Al2O3, Fe2O3, MgO, CaO, and Na2O) and sand. These metal oxides, categorized as loosely and strongly bound clays, are considered impurities in core production. This study proposes a chemical reclamation technique for WFS using fresh acid solutions or acidic industrial effluent. Experiments were conducted to remove the loosely and strongly bound clays from the WFS, optimizing parameters such as acid concentration, sand to acid loading, temperature, stirring speed, and reaction time to achieve optimal performance. The quality of the reclaimed sand was evaluated using various foundry standard tests, including determination of clay contents, compressive strength, Grain Fineness Number (GFN), Loss on Ignition (LOI), Acid Demand Value (ADV), and scanning electron microscopy. The reclaimed sand exhibited a loosely bound clay content of 1.5 %, oolitic content of 5.5 %, a grain fineness number of 55, a loss on ignition of 1.92 %, and an acid demand value of 1.5 ml/100 g of sand. Field trials demonstrated that the reclaimed sand can be effectively used for core production at an economical rate.http://www.sciencedirect.com/science/article/pii/S2772826924000014Waste foundry sandClayOoliticAcidEffluentChemical reclamation |
| spellingShingle | Mohd Moiz Khan S.M. Mahajani Chemical reclamation of waste green foundry sand and its application in core production Sustainable Chemistry for Climate Action Waste foundry sand Clay Oolitic Acid Effluent Chemical reclamation |
| title | Chemical reclamation of waste green foundry sand and its application in core production |
| title_full | Chemical reclamation of waste green foundry sand and its application in core production |
| title_fullStr | Chemical reclamation of waste green foundry sand and its application in core production |
| title_full_unstemmed | Chemical reclamation of waste green foundry sand and its application in core production |
| title_short | Chemical reclamation of waste green foundry sand and its application in core production |
| title_sort | chemical reclamation of waste green foundry sand and its application in core production |
| topic | Waste foundry sand Clay Oolitic Acid Effluent Chemical reclamation |
| url | http://www.sciencedirect.com/science/article/pii/S2772826924000014 |
| work_keys_str_mv | AT mohdmoizkhan chemicalreclamationofwastegreenfoundrysandanditsapplicationincoreproduction AT smmahajani chemicalreclamationofwastegreenfoundrysandanditsapplicationincoreproduction |