Study on Grinding Additives in Cassiterite–Polymetallic Sulfide Ore Grinding
To attempt a new approach to improve the grinding of cassiterite–polymetallic sulfide ores while simultaneously reducing cassiterite overgrinding and sulfide undergrinding, this article looked into the effects of grinding chemical additives on the distribution of grinding product size. Six chemicals...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/12/4/472 |
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| author | Jinlin Yang Shaojian Ma Wentao Zhou Pengyan Zhu |
| author_facet | Jinlin Yang Shaojian Ma Wentao Zhou Pengyan Zhu |
| author_sort | Jinlin Yang |
| collection | DOAJ |
| description | To attempt a new approach to improve the grinding of cassiterite–polymetallic sulfide ores while simultaneously reducing cassiterite overgrinding and sulfide undergrinding, this article looked into the effects of grinding chemical additives on the distribution of grinding product size. Six chemicals, namely sodium hexametaphosphate, triethanolamine, ferric sulphate, aluminum chloride, polyaluminum chloride and polyacrylamide, were compared in terms of their influence on the grinding product size distribution. The results showed that the six chemicals changed the distribution results with varying orientations and degrees and that the addition of polyacrylamide achieved the most satisfactory effect by decreasing the production of both coarse and fine size fractions and increasing the production of qualified particles. The effect of the molecular weight of polyacrylamide on the grinding was also discussed. The polyacrylamides with molecular weights of about 3 × 10<sup>6</sup>, 5 × 10<sup>6</sup>, 8 × 10<sup>6</sup> and 12 × 10<sup>6</sup> could help to produce less of the coarse size fraction and more of the qualified size fraction, but only the polyacrylamides with molecular weights of 3 × 10<sup>6</sup> and 5 × 10<sup>6</sup> produced pronounced changes. Moreover, the polyacrylamides could slightly reduce the production of the fine size fraction. Polyacrylamide with a 5 × 10<sup>6</sup> molecular weight was better than that with a 3 × 10<sup>6</sup> molecular weight in aiding the grinding of the discussed ore. It was also found that the aid action of the polyacrylamide with a 5 × 10<sup>6</sup> molecular weight was related to grinding concentration and that a low grinding concentration of less than 70% solid mass was helpful in exerting its aid action. Using polyacrylamide could shorten the grinding time that is needed to achieve the same, or even improved, product size distribution. |
| first_indexed | 2024-03-09T10:30:52Z |
| format | Article |
| id | doaj.art-2518a805717b4b87963f90273970c4be |
| institution | Directory Open Access Journal |
| issn | 2075-163X |
| language | English |
| last_indexed | 2024-03-09T10:30:52Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Minerals |
| spelling | doaj.art-2518a805717b4b87963f90273970c4be2023-12-01T21:15:40ZengMDPI AGMinerals2075-163X2022-04-0112447210.3390/min12040472Study on Grinding Additives in Cassiterite–Polymetallic Sulfide Ore GrindingJinlin Yang0Shaojian Ma1Wentao Zhou2Pengyan Zhu3College of Resources, Environment and Materials, Guangxi University, Nanning 530004, ChinaCollege of Resources, Environment and Materials, Guangxi University, Nanning 530004, ChinaCollege of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, ChinaCollege of Resources, Environment and Materials, Guangxi University, Nanning 530004, ChinaTo attempt a new approach to improve the grinding of cassiterite–polymetallic sulfide ores while simultaneously reducing cassiterite overgrinding and sulfide undergrinding, this article looked into the effects of grinding chemical additives on the distribution of grinding product size. Six chemicals, namely sodium hexametaphosphate, triethanolamine, ferric sulphate, aluminum chloride, polyaluminum chloride and polyacrylamide, were compared in terms of their influence on the grinding product size distribution. The results showed that the six chemicals changed the distribution results with varying orientations and degrees and that the addition of polyacrylamide achieved the most satisfactory effect by decreasing the production of both coarse and fine size fractions and increasing the production of qualified particles. The effect of the molecular weight of polyacrylamide on the grinding was also discussed. The polyacrylamides with molecular weights of about 3 × 10<sup>6</sup>, 5 × 10<sup>6</sup>, 8 × 10<sup>6</sup> and 12 × 10<sup>6</sup> could help to produce less of the coarse size fraction and more of the qualified size fraction, but only the polyacrylamides with molecular weights of 3 × 10<sup>6</sup> and 5 × 10<sup>6</sup> produced pronounced changes. Moreover, the polyacrylamides could slightly reduce the production of the fine size fraction. Polyacrylamide with a 5 × 10<sup>6</sup> molecular weight was better than that with a 3 × 10<sup>6</sup> molecular weight in aiding the grinding of the discussed ore. It was also found that the aid action of the polyacrylamide with a 5 × 10<sup>6</sup> molecular weight was related to grinding concentration and that a low grinding concentration of less than 70% solid mass was helpful in exerting its aid action. Using polyacrylamide could shorten the grinding time that is needed to achieve the same, or even improved, product size distribution.https://www.mdpi.com/2075-163X/12/4/472grindingcassiterite–polymetallic sulfide oreovergrindingundergrindinggrinding additive |
| spellingShingle | Jinlin Yang Shaojian Ma Wentao Zhou Pengyan Zhu Study on Grinding Additives in Cassiterite–Polymetallic Sulfide Ore Grinding Minerals grinding cassiterite–polymetallic sulfide ore overgrinding undergrinding grinding additive |
| title | Study on Grinding Additives in Cassiterite–Polymetallic Sulfide Ore Grinding |
| title_full | Study on Grinding Additives in Cassiterite–Polymetallic Sulfide Ore Grinding |
| title_fullStr | Study on Grinding Additives in Cassiterite–Polymetallic Sulfide Ore Grinding |
| title_full_unstemmed | Study on Grinding Additives in Cassiterite–Polymetallic Sulfide Ore Grinding |
| title_short | Study on Grinding Additives in Cassiterite–Polymetallic Sulfide Ore Grinding |
| title_sort | study on grinding additives in cassiterite polymetallic sulfide ore grinding |
| topic | grinding cassiterite–polymetallic sulfide ore overgrinding undergrinding grinding additive |
| url | https://www.mdpi.com/2075-163X/12/4/472 |
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