%0 Journal Article
%T Application of SPI for Modeling energy consumption in Sarcheshmeh SAG and ball mills
%J Journal of Mining and Environment
%I Shahrood University of Technology
%Z 2251-8592
%A Jahani, M.
%A Noaparast, M.
%A Farzanegan, A.
%A Langarizadeh, G.
%D 2012
%\ 01/15/2012
%V 2
%N 1
%P -
%! Application of SPI for Modeling energy consumption in Sarcheshmeh SAG and ball mills
%K Sarcheshmeh, comminution
%K SAG Mill
%K Ball Mill
%K SPI
%K Energy
%K modeling
%R 10.22044/jme.2012.17
%X In this research, the efficiency of the comminution circuit as well as the efficiency of size classification equipment of the concentrator plant 2 of Sarcheshmeh copper complex was studied. The comminution circuit of this plant includes one SAG mill in a closed circuit with a vibrating screen and one ball mill with a size classification system of hydrocyclone. The goal of this work was to calculate the proportion of each of these mills at energy consumption and generating suitable product for flotation as a further process. Three stages of sampling were performed and consumed energy was also modeled. The average efficiency of the initial ball mill was obtained which was equal to 72.96%. The average of the proportion of (consumed) energy by SAG and ball mills from total consumed energy at mills, was 44.65% and 55.35% respectively. The proportion of SAG and ball mills in producing the final product (particles finer than 74 µm) was 55.38% and 44.62% respectively. That is, the SAG mill produces about 10.76% more than the ball mill in the final product. The average consumed energy at SAG and ball mills to produce one ton of final product was 23.16 kWh/t and 36.05 kWh/t respectively. Thus, the ball mill consumes 12.89 kWh/t, more energy than the SAG mill in producing the final product. The average cyclones’ imperfection was 0.361 and therefore the average efficiency of cyclones’ separation was equal to 63.9% and the average efficiency of the vibrating screen was equal to 99.89%. As overflow of the initial cyclones (final product of comminution circuit) forms feed of rougher cells, cyclones’ inappropriate performance could severely influence the whole flotation process.
%U https://jme.shahroodut.ac.ir/article_17_cb68c84408ac5e065a6d8e758a351814.pdf