Binding Properties of Mechanically Activated Nepheline Containing Mining Waste

Minerals

BasyaI. Gurevich¹  ElenaV. Kalinkina¹  AlexanderM. Kalinkin¹ 

[1] Tananaev Institute of Chemistry, Subdivision of the Federal Research Centre “Kola Science Centre of the Russian Academy of Sciences”, Akademgorodok 26a, Apatity 184209, Murmansk Region, Russia;

关键词: mining waste;    ore dressing tailings;    nepheline;    binding properties;    mechanical activation;   

DOI  :  10.3390/min10010048

来源: DOAJ

【 摘 要 】

The development of apatite and rare-metal deposits of the Khibiny and Lovozero—the world’s largest ultrabasic massifs located in the Kola Alkaline Province—is accompanied by accumulation of huge amounts of sandy tailings dumps, about half consisting of nepheline. These tailings, on the one hand, pose a real threat of environmental pollution. On the other hand, they are “technogenic deposits” that contain reserves of valuable components (Na₂O, K₂O, Al₂O₃, etc.). In this paper, methods of processing of the nepheline-containing mining waste using mechanical activation to produce binding materials—geopolymers and blended cements—are observed. The advantages of combining the nepheline containing tailings dumps with other mining wastes accumulated in the region, such as Cu−Ni slag, are presented.

【 授权许可】

Unknown