Verification of the hydrostatic weighing system with existing gold purity instruments
Determination of gold bar purity remains one of the most challenging tasks in gold industry. Currently, the existing instruments have a limitation to determine the purity, which in turn have produced inaccurate gold purity measurement. For example, X-ray fluorescence (XRF) technique has a limitation...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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2020
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| Online Access: | http://eprints.utm.my/93725/1/FazrulMohdNor2020_VerificationoftheHydrostaticWeighingSystem.pdf |
| _version_ | 1796865680634544128 |
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| author | Mohd. Nor, F. Tamuri, A. R. Ismail, A. K. Mazuki, A. A. M. |
| author_facet | Mohd. Nor, F. Tamuri, A. R. Ismail, A. K. Mazuki, A. A. M. |
| author_sort | Mohd. Nor, F. |
| collection | ePrints |
| description | Determination of gold bar purity remains one of the most challenging tasks in gold industry. Currently, the existing instruments have a limitation to determine the purity, which in turn have produced inaccurate gold purity measurement. For example, X-ray fluorescence (XRF) technique has a limitation to penetrate the gold bar and XRF was only used to determine the surface purity. Therefore, an improved non-destructive method and precise technique has been developed to determine the gold purity. Gold density measurement can verify the purity of the gold and in this study, the density of gold bar was calculated using a custom made hydrostatic weighing system (HWS). Several measurements of density were carried out for gold bar and tungsten bar. Using HWS, the density of gold bar and tungsten bar were 19.268 g/ml and 19.206 g/ml respectively. The expanded uncertainty was also evaluated and the value was 0.006 g/ml. The new developed HWS method was also verified with existing density measurement instruments where the same density results has been obtained but the existing instruments have produced bigger uncertainty of 0.2 g/ml. Thus, this study demonstrates that the developed HWS is appropriate to be used to measure the density of gold bar accurately. Furthermore, the new developed system of HWS have shown better measurement with smaller uncertainty and hence the improvement in gold bar purity measurement. |
| first_indexed | 2024-03-05T21:00:45Z |
| format | Conference or Workshop Item |
| id | utm.eprints-93725 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T21:00:45Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | utm.eprints-937252021-12-31T08:40:17Z http://eprints.utm.my/93725/ Verification of the hydrostatic weighing system with existing gold purity instruments Mohd. Nor, F. Tamuri, A. R. Ismail, A. K. Mazuki, A. A. M. QC Physics Determination of gold bar purity remains one of the most challenging tasks in gold industry. Currently, the existing instruments have a limitation to determine the purity, which in turn have produced inaccurate gold purity measurement. For example, X-ray fluorescence (XRF) technique has a limitation to penetrate the gold bar and XRF was only used to determine the surface purity. Therefore, an improved non-destructive method and precise technique has been developed to determine the gold purity. Gold density measurement can verify the purity of the gold and in this study, the density of gold bar was calculated using a custom made hydrostatic weighing system (HWS). Several measurements of density were carried out for gold bar and tungsten bar. Using HWS, the density of gold bar and tungsten bar were 19.268 g/ml and 19.206 g/ml respectively. The expanded uncertainty was also evaluated and the value was 0.006 g/ml. The new developed HWS method was also verified with existing density measurement instruments where the same density results has been obtained but the existing instruments have produced bigger uncertainty of 0.2 g/ml. Thus, this study demonstrates that the developed HWS is appropriate to be used to measure the density of gold bar accurately. Furthermore, the new developed system of HWS have shown better measurement with smaller uncertainty and hence the improvement in gold bar purity measurement. 2020 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.utm.my/93725/1/FazrulMohdNor2020_VerificationoftheHydrostaticWeighingSystem.pdf Mohd. Nor, F. and Tamuri, A. R. and Ismail, A. K. and Mazuki, A. A. M. (2020) Verification of the hydrostatic weighing system with existing gold purity instruments. In: 0th International Conference on Mechanical and Manufacturing Engineering (ICME2019), 29-30 Aug 2019, Ayer Keroh, Melaka, Malaysia. http://dx.doi.org/10.1088/1757-899X/824/1/012007 |
| spellingShingle | QC Physics Mohd. Nor, F. Tamuri, A. R. Ismail, A. K. Mazuki, A. A. M. Verification of the hydrostatic weighing system with existing gold purity instruments |
| title | Verification of the hydrostatic weighing system with existing gold purity instruments |
| title_full | Verification of the hydrostatic weighing system with existing gold purity instruments |
| title_fullStr | Verification of the hydrostatic weighing system with existing gold purity instruments |
| title_full_unstemmed | Verification of the hydrostatic weighing system with existing gold purity instruments |
| title_short | Verification of the hydrostatic weighing system with existing gold purity instruments |
| title_sort | verification of the hydrostatic weighing system with existing gold purity instruments |
| topic | QC Physics |
| url | http://eprints.utm.my/93725/1/FazrulMohdNor2020_VerificationoftheHydrostaticWeighingSystem.pdf |
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