Technological aspects for the treatment of magnesium silicate waste

Prospects Mining and Metallurgy Industry Development

Khudyakova, L.I.^1 ; Timofeeva, S.S.^2

Baikal Institute of Nature Management Siberian Branch, Russian Academy of Sciences, Russia^1

Irkutsk National Research Technical University, Russia^2

关键词: Cement compositions;    Cement manufacturing;    Cement production;    Environmental problems;    Magnesium silicates;    Strength characteristics;    Technological aspects;    Technological parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/229/1/012029/pdf
DOI  :  10.1088/1755-1315/229/1/012029

来源: IOP

【 摘 要 】

Magnesium silicate waste from the mining industry occurs in substantial volumes and is almost never used. This paper outlines that the waste can be used as a mineral additive in the production of Portland cement. The influence of the quantity of troctolite additive and the specific surface area on the mechanical properties of cements has been analyzed. The technological parameters in cement production with mineral additive are determined. The study also found that the introduction of troctolite in quantity of 25 % at a specific surface area of 450 kg/m2 leads to improved strength characteristics of cement compositions. The use of magnesium silicate waste in cement production can reduce the environmental impact of cement manufacturing by reducing the consumption of natural resources, electricity and by decreasing of carbon dioxide and dust emissions. The study concluded that it will also help to solve environmental problems of mining industry.