Open AccessImprovement of extracted iron ore grade in underground mining
Author(s) -
Mykola Stupnik,
Vsevolod Kalinichenko,
Olena Kalinichenko,
Alexey Pochtarev
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/970/1/012048
Subject(s) - iron ore , massif , mining engineering , dilution , extraction (chemistry) , geology , metallurgy , geochemistry , materials science , chemistry , physics , chromatography , thermodynamics
Decrease in grade and high losses of broken ore are stated to be important problems that accompany the process of marketable production in mining of iron ore deposits by underground methods. The article analyzes and generalizes causes of high losses and dilution of broken ore during its drawing underground. It is found that dilution of ore with waste rocks results in the decreased iron content in the extracted ore mass as compared to that in the ore massif. The research performed enables development and scientific substantiation of a rational technology of ore drawing and transportation that improves the mined ore grade by more complete extraction of broken reserves of clean iron ore from the ore body footwall.