Mineralogy and texture of the Storforshei iron formation, and their effect on grindability

摘要: Abstract Investigating how ore mineralogy and texture affect the recovery from processing plant is important for any mining operation. The results will assist in production planning optimising utilisation of a deposit. Easily available validated tests are desirable useful. Storforshei iron formation (IF) consists several oxide deposits with mineralogical textural differences. Although Fe grades ores similar, characteristics individual recoveries magnetic separation. For this paper three were sampled, properties investigated tested. investigations included geological mapping optical microscopy, test work involved surface hardness measurements by Schmidt hammer Equotip, autogenous milling (i.e., grindability). aim study was to investigate whether textures can be correlated measurements, these parameters used evaluate grindability. classified into six types based on textures. show that influence hardness. Fine-grained irregular-to-no visible grain boundaries have higher than coarser-grained straight boundaries. Furthermore, grindability evaluations (using throughput (kg/h) specific energy consumption (kWh/tonne)) samples indicate decreases increasing relationship found between mineralogy, texture, hardness, suggests grindability, thus assess performance.