| Article |
|---|
| Article name |
THE INFLUENCE OF BISMUTH AND ANTIMONY ON THERMAL PROPERTIES OF ORES OF GOLD DEPOSITS OF THE TRANSBAIKAL REGION |
| Authors |
Mironova E.. assistant, Miгonova20-11@mail.ruYurgenson G.. , Lamberova V.. , Filenko R.. junior researcher, filrom@yandex.ru |
| Bibliographic description |
Mironova E., Jurgenson G., Limberova V., Filenko R. The influence of bismuth and antimony on thermal properties of ores of gold deposits of the Transbaikal region // Transbaikal State University Journal, 2017,vol. 23,no. 6,pp.20-30. |
| Category |
Earth science |
| DOI |
544.3.032.2 |
| DOI |
10.21209/2227-9245-2017-23-6-20-30 |
| Article type |
|
| Annotation |
The method of the thermogravimetric analysis has established an impact of semi-metals introduction into the samples of ore of two industrially important deposits of the Transbaikal region: Lyubavinskoye (medium-deep gold-quartz) and unique on stocks and content of gold Baley-Taseevskoye (low-deep gold-silver-quartz). Accurate distinctions of the results of thermal researches of ore before and after introduction of antimony and bismuth are revealed.
For implementation of the thermogravimetric analysis the heating of the studied control samples of ore and samples of ore compositions with semi-metals were carried out to 700...1200 °C in a stream of argon or air (the highest temperature depends on the state of sample’s caking). The loss of mass of ore control samples goes with an identical speed; there are similar thermal effects though their intensity is various. Also we note that the loss of weight happens in stages: when heating the ore samples of the Taseevsky deposit occurs in three stages, whereas the heating of the ore samples of the Lyubavinsky deposit in four stages. At the temperature of 573,9.574 °C there is a powerful end-effect, characterizing a-P transition of a phase condition of quartz. Theoretical data of a-P transition of quartz are at 573,2 °C, but because of the different size of quartz particles in a hinge plate (small particles and large change a phase state at different times) the end-effect not considerably moves as it occurs in our case. The residual mass of samples on reaching 1000 °C has averaged 96,7 %.
The observed intensive thermal effects of decomposition of clay, carbonate, sulphidic components of polymineral ores, accurate peak phase of a-P quartz transition, stage loss of weight when heating samples of ore compositions with the introduced semi-metals during the heating process of ore control samples aren’t shown.
At a thermal research of composition of the structure ore + semimetal we observe noticeable “smoothing” of curve DSK, loss of weight takes place evenly, without sharp stages that underlines the idea about formation of composite structures resistant to external thermal influences in such cases. |
| Key words |
thermogravimetry, semimetals, molecular structures, ore, medium-deep and low gold-quartz ore formations, Lubavinsky deposit, Taseevskoye deposit, quartz, introduction, mineral composition |
| Article information |
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| References |
1. Grabov V. M., Stepanov N. P. FTP (FTP), 2001,vol. 35,no. 6,pp. 734-738.
2. Stepanov N.P., Grabov V.M.Izvestiya RGPU im. A.I.Gertsena (News of the RSPU named after A. I. Herzen), 2004,vol. 4,no. 8,p. 52.
3. Topor N.D., Ogorodova L.P., Melchakova L.V. Termicheskiy analiz mineralov i neorganicheskih (Thermal analysis of minerals and inorganic). Moscow: MGU, 1987. 190 p.
4. Yurgenson G.A., Limberova V.V., Mironova E.V. Vestn.Zab. Gos. Univ. (Transbaikal State University Journal), 2012,no. 10 (89),pp. 36-42. |
| Full article | THE INFLUENCE OF BISMUTH AND ANTIMONY ON THERMAL PROPERTIES OF ORES OF GOLD DEPOSITS OF THE TRANSBAIKAL REGION |
