Study on Microwave-assisted Grinding Mechanism of Cassiterite-polymetallic Sulfide Ore

BAI Liji; SU Xiujuan; HE Chunlin; MA Shaojian

doi:10.13779/j.cnki.issn1001-0076.2018.06.006

2018 Vol. 38, No. 6

Article Contents

Article navigation > Conservation and Utilization of Mineral Resources > 2018 > (6): 31-36

Next Article Previous Article

BAI Liji, SU Xiujuan, HE Chunlin, MA Shaojian. Study on Microwave-assisted Grinding Mechanism of Cassiterite-polymetallic Sulfide Ore[J]. Conservation and Utilization of Mineral Resources, 2018, (6): 31-36. doi: 10.13779/j.cnki.issn1001-0076.2018.06.006

Citation:

BAI Liji, SU Xiujuan, HE Chunlin, MA Shaojian. Study on Microwave-assisted Grinding Mechanism of Cassiterite-polymetallic Sulfide Ore[J]. Conservation and Utilization of Mineral Resources, 2018, (6): 31-36. doi: 10.13779/j.cnki.issn1001-0076.2018.06.006

Study on Microwave-assisted Grinding Mechanism of Cassiterite-polymetallic Sulfide Ore

College of Resources, Environment and Material, Guangxi University, Nanning 530004, China

More Information

Corresponding author: SU Xiujuan

Received Date: 19 October 2018

Publish Date: 25 December 2018

Abstract

Abstract

Taking cassiterite polymetallic sulphide ore as the research object, the effects of preheating and different cooling methods on the grindability of grinding products were investigated after pretreatment of microwave heating. The results showed that after microwave heating, the grindability increased and the Bond work index decreased. This is mainly due to the fact that the microwave radiation increases the temperature of the metal minerals such as jamesonite, pyrite, sphalerite, cassiterite, etc. in the cassite polymetallic sulfide ore, and has less effect on the gangue minerals. The large temperature gradient between the metallic metal minerals and gangue minerals could produce uneven thermal expansion and promote the dissociation of metallic minerals and gangue minerals due to the high stress concentration inside the ore, thereby strengthening the grinding effect.
- microwave /
- cassiterite /
- polymetallic sulfide ore /
- grinding /
- Bond's work index /

FullText(HTML)

References

[1]	石政威.锡石多金属硫化矿球介质磨矿规律试验研究[J].南宁:广西大学, 2009. Google Scholar
[2]	Napier-Munn T. J., Morrell S., Morrison R. D., et al. Mineral comminution circuits:their operation and optimization[M]. Julius kruttschnitt mineral research centre, University of Queensland, 2005:1-2. Google Scholar
[3]	Amankwah R. K., Ofori-Sarpong G. Microwave heating of gold ores for enhanced grindability and cyanide amenability[J]. Minerals engineering, 2011, 24(6):541-544. doi: 10.1016/j.mineng.2010.12.002 CrossRef Google Scholar
[4]	付润泽, 朱红波, 彭金辉, 等.采用微波助磨技术处理惠民铁矿的研究[J].矿产综合利用, 2012(2):24-27. doi: 10.3969/j.issn.1000-6532.2012.02.007 CrossRef Google Scholar
[5]	付润泽.微波辅助磨细惠民铁矿实验研究[D].昆明: 昆明理工大学, 2011.http://cdmd.cnki.com.cn/Article/CDMD-10674-1012263253.htm Google Scholar
[6]	Schmuhl R., Smit J. T., Marsh J. H. The influence of microwave pre-treatment of the leach behaviour of disseminated sulphide ore[J]. Hydrometallurgy, 2011, 108(3):157-164. Google Scholar
[7]	Omran M., Fabritius T., Abdel-Khalek N., et al. Microwave assisted liberation of high phosphorus oolitic iron ore[J]. Journal of minerals and materials characterization and engineering, 2014, 2(5):414-427. doi: 10.4236/jmmce.2014.25046 CrossRef Google Scholar
[8]	Omran M., Fabritius T., Mattila R. Thermally assisted liberation of high phosphorus oolitic iron ore:a comparison between microwave and conventional furnaces[J]. Powder technology, 2015, 269:7-14. doi: 10.1016/j.powtec.2014.08.073 CrossRef Google Scholar
[9]	Lester E., Kingman S., Dodds C., et al. The potential for rapid coke making using microwave energy[J]. Fuel, 2006, 85(14):2057-2063. Google Scholar
[10]	Han L. C., Li E., Guo, G. F., et al. Application of transmission/reflection method for permittivity measurement in coal desulfurization[J]. Progress in electromagnetics research letters, 2013, 37:177-187. doi: 10.2528/PIERL12123002 CrossRef Google Scholar
[11]	Walkiewicz J W, Kazonich G, McGill S L. Microwave heating characteristics of selected minerals and components[J]. Mineral and metallurgical processing, 1988, 5(1):39-42. Google Scholar
[12]	McGill S L, Walkiewicz J W, Smyres G A. The effect of power level on microwave heating of selected chemicals and minerals[J]. Materials research society proceedings, 1988, 124:247-252. doi: 10.1557/PROC-124-247 CrossRef Google Scholar
[13]	Connell L H, Moe L A. Apparatus for treatment of ore US: 3261959[P]. 1966-04-24. Google Scholar
[14]	Ford J D, T Pei D C. High temperature chemical process via microwave absorption[J]. Microwave power, 1967, 2(2):61-64. doi: 10.1080/00222739.1967.11688647 CrossRef Google Scholar
[15]	Whittles D N, Kingman S W, Reddish D J. Application of numerical modelling for prediction of the influence of power density on microwave-assisted breakage[J]. International journal of mineral processing, 2003, 68(1):71-91. Google Scholar
[16]	Jones D A, Kingman S W, Whittles D N, et al. Understanding microwave assisted breakage[J]. Minerals engineering, 2005, 18(7):659-669. doi: 10.1016/j.mineng.2004.10.011 CrossRef Google Scholar
[17]	Ali A Y. Understanding the effects of mineralogy, ore texture and microwave power delivery on microwave treatment of ores[J]. Stellenbosch:University of Stellenbosch, 2010. Google Scholar