PRACTICAL USE OF NONMETALLIFEROUS RAW MATERIALS COPPER-NICKEL DEPOSITS

Aim. Copper-nickel deposits are located all over the world. A large amount of nonmetalliferous raw materials is formed, when they are developed. It moves into dumps and creates environmental risks for the environment. In the dumps magnesium-containing rocks prevail, which must be disposed of. The purpose of the work is to study the possibility of their use in the production of building materials. Methods. The chemical analysis was carried out by gravimetry, photometry, and atomic-absorption spectroscopy. The mineral composition was studied using X-ray phase analysis. The mechanical parameters were determined on a test hydraulic press. Results. It is established that the crushed stone from magnesiumbearing rocks is of high quality and can be used as a large aggregate in the production of concretes. It is shown that the concrete, containing crushed stone from ultrabasic rocks - verlites show the most compression strength. The lowest values has ordinary concrete on granite crushed stone. The type of hardening conditions also affects the strength of the resulting material. Sand from the sifting of crushing rock mass has angular shape of the grains and a mineral composition as in the parent rock. This contributes to the design of a dense structure of concrete stone, which increases its strength by more than 10%. Main conclusions. The use non-metalliferous raw materials will reduce the volumes of waste rock formed during the development of mineral deposits. In this case, it is possible to obtain a finished commodity product - crushed stone from magnesium-containing rocks and sand from their crushing. This will solve environmental, economic problems, as well as produce the necessary building materials for their own needs.

1. Naldrett A.Dj. Magmaticheskiye sul'fidnyye mestorozhdeniya medno-nikelevykh i platinometall'nykh rud [Magmatic Sulfide Deposits of Copper-nickel and Platinum- metal Ores]. SPb., SPbGU Publ., 2003, 487 p. (In Russian)

2. Salgado S.S., Ferreira Filho C.F., de Andrade Caxito F., Uhlein A., Dantas E.L., Stevenson R. The Ni-Cu- PGE mineralized Brejo Seco mafic-ultramafic layered intrusion, Riacho do Pontal Orogen: Onset of Tonian (ca. 900 Ma) continental rifting in Northeast Brazil. Journal of South American Earth Sciences, 2016, vol. 70, pp. 324-339. DOI: 10.1016/j.jsames.2016.06.001

3. Sharara N.A., Wilson G.C., Rucklidge J.C. Platinumgroup elements and gold in Cu-Ni-mineralized peridotite at Gabbro Akarem, Eastern Desert, Egypt. Canadian Mineralogist. 1999, vol. 37, iss. 5, pp. 1081-1097.

4. Sproule R.A., Lambert D.D., Hoatson D.M. Re–Os isotopic constraints on the genesis of the Sally Malay Ni–Cu–Co deposit, East Kimberley, Western Australia. Lithos, 1999, vol. 47, iss. 1-2, pp. 89-106. DOI: 10.1016/S0024-4937(99)00009-2

5. Gao J-F., Zhou M-F., Lightfoot P.C., Wang C.Y., Qi L. Origin of PGE-poor and Cu-rich magmatic sulfides from the Kalatongke deposit, Xinjiang, Northwest China. Economic Geology, 2012, vol. 107, iss. 3, pp. 481-506. Doi: 10.2113/econgeo.107.3.481

6. Chai F.M., Zhang Z.C., Mao J.W., Dong L.H., Zhang Z.H., Wu H. Geology, petrology and geochemistry of the Baishiquan Ni-Cu-bearing mafic-ultramafic intrusions in Xinjiang, NW China: implications for tectonics and genesis of ores. Journal of Asian Earth Sciences, 2008, vol. 32, iss. 2-4, pp. 218-235. DOI: 10.1016/j.jseaes.2007.10.014

7. Tang D., Qin K., Xue S., Mao Y., Evans N.J., Niu Y., Chen J. Genesis of the Permian Kemozibayi sulfidebearing mafic-ultramafic intrusion in Altay, NW China: Evidence from zircon geochronology, Hf and O isotopes and mineral chemistry. Lithos, 2017, vol. 292-293, pp. 49-68. DOI: 10.1016/j.lithos.2017.08.021

8. Krivenko A.P., Glotov A.I., Balykin P.F. et al. Med'-nikelenosnyye gabbroidnyye formatsii skladchatykh oblastey Sibiri [Copper-nickel-bearing gabbroid formations of the folded regions of Siberia]. Novosibirsk, Nauka Publ., 1990, 237 p. (In Russian)

9. Buchko I.V., Sorokin A.A., Ponomarchuk V.A., Izokh A.E. Geochemical Features and Geodynamic Setting of Formation of the Lukinda Dunite-troctolite-gabbro Massif (southeastern framing of the Siberian Platform). Geologiya i geofizika [Geology and Geophysics]. 2012, vol. 53, no. 7, pp. 834-850. (In Russian)

10. Yurichev A.N., Chernyshov A.I. Parental Melt and Geodynamics of the Layered Mafic-ultramafic Massifs of the Kan Block of Eastern Sayan. Izvestiya Tomskogo politekhnicheskogo universiteta [Bulletin of the Tomsk Polytechnic University]. 2014, vol. 324, no. 1, pp. 128-137. (In Russian)

11. Parada S.G. Background and characteristics of Pt potential ultrabasic massifs of the North Caucasus. Science in the South Russia, 2017, vol. 13, no. 1, pp. 59-73. DOI: 10.23885/2500-0640-2017-13-1-59-73 (In Russian)

12. Lèbre É., Corder G.D., Golev A. Sustainable practices in the management of mining waste: A focus on the mineral resource. Minerals Engineering, 2017, vol. 107, pp. 34-42. DOI: 10.1016/j.mineng.2016.12.004

13. Маvlyanov А.S., Аbdykalykov А.А., Аssakunova B.Т. Formation of a Local Source of Raw Materials of Constructional Industry. Nauka, novyye tekhnologii i innovatsii Kyrgyzstana [Science, New Technologies and Innovations in Kyrgyzstan]. 2016, no. 1, pp. 29-33. (In Russian)

14. Klyuyev S.V., Klyuyev A.V., Gafarova N.E. To the Question of Recycling the Waste Materials of Shell Limestone for Fibre Concrete Production. Uspekhi sovremennoy nauki [Modern Science Successes]. 2017, vol. 4, no. 2, pp. 151-154. (In Russian)

15. Lygina T.Z., Luzin V.P., Kornilov A.V. Technogenic Waste of Non-metallic Raw Materials in the Building Materials Production. Izvestiya KGASU [News of the KSUAE]. 2017, no. 4 (42), pp. 303-313. (In Russian)

16. Rakhimova G.M., Tajibaeva D.M., Ikisheva А.О., Dadieva М.K., Divak L.A., Imanova M.A. Sand and Rubble From Beneficiation Wastes of Iron Ores for Fine-grained Concrete. Fundamental'nyye issledovaniya [Fundamental Research]. 2013, no. 10-11, pp. 2445-2449. (In Russian)

17. Kore S.D., Vyas A.K. Performance evaluation of concrete using marble mining waste. Journal of Civil Engineering, 2016, vol. 11, iss. 2, pp. 53-66. DOI: 10.1515/sspjce-2016-0018

18. Kuranchie F.A., Shukla S.K., Habibi D., Mohyeddin A. Utilization of iron ore tailings as aggregates in concrete. Cogent Engineering, 2015, vol. 2, iss. 1, article 1083137. DOI: 10.1080/23311916.2015.1083137

19. Rana A., Kalla P., Csetenyi L.J. Recycling of dimension limestone industry waste in concrete. International Journal of Mining, Reclamation and Environment, 2017, vol. 31, iss. 4, pp. 231-250. DOI: 10.1080/17480930.2016.1138571

20. Sheoran А. Use of base metal tailings from mining industry in concrete: a review. International Journal of Research in Engineering and Applied Sciences, 2017, vol. 7, iss. 6, pp. 1-9. Available at: http://euroasiapub.org/journals.php (accessed 17.04.2018)

21. Gopez R.G. Utilizing mine tailings as substitute construction material: the use of waste materials in roller compacted concrete. Open Access Library Journal, 2015, vol. 2, no. 12, pp. 1-9. DOI: 10.4236/oalib.1102199

22. Kislov E.V. Yoko-Dovyrenskiy rassloyennyy massiv [Yoko-Dovyrensky layered massif]. Ulan-Ude, BSC SB RAS Publ., 1998, 264 p. (In Russian)

23. GOST 30108-94. Building materials and elements. Determination of specific activity of natural radioactive nuclei. Moscow, Standartinform Publ., 1995, 11 p. (In Russian)

24. GOST 8267-93. Crushed stone and gravel of solid rocks for construction works. Specifications. Moscow, Standartinform Publ., 1995, 21 p. (In Russian)