— Considerable advantages must, therefore be offered by dry separation techniques to justify its use in preference to wet process. This present paper discusses both the dry and wet magnetic separation techniques used for processing of a low grade siliceous iron ore sample.

 — The Swedish Kiruna iron ore operations utilize LIMS separators for the beneficiation of a low-grade magnetite ore with ~60% Fe content [109]. Magnetic separation is operated both in dry and wet environments, although wet conditions are more prevalent.

The beneficiation process was established, involving crushing, screening, jigging, spiral separation, size reduction, desliming and magnetic separation. The process showed significant enrichment in Fe values to 63.5 percent Fe in concentrate, from 49.2 percent Fe.

 — Microwave-assisted magnetizing roasts were used to produce an iron ore product from low-grade, goethite-dominant, iron ore plant rejects. Goethite was found to be converted to hematite at temperatures above 370 °C on reduction in a microwave furnace under gas mixtures of 30:70 and 40:60 CO/CO 2.

 — Depletion of the mineral ore base of high-grade quality and easily beneficiated iron ores has led to the need for improvement in the processing of low-grade and complex composition magnetite–hematite ores.

 — Present investigation includes the magnetizing roasting of low-grade iron ore fines followed by grinding and beneficiation using magnetic separation. The hematite iron ore used in the investigation contains 53.17% T Fe, 10.7% SiO2, and 4.5% Al2O3.

 — These two techniques were adopted for the beneficiation of the Wadi Haifa low-grade iron ore. As a result of the fine dissemination of the iron minerals and the most abundant gangue mineral,...

 — The beneficiation plant is designed to process less than 10 mm of low-grade iron ore fines. Low-grade fines fed to the plant are scrubbed and then classified into two size fractions, that is, +0.5 and −0.5 mm utilizing vibratory screens.

 — Present investigation includes the magnetizing roasting of low-grade iron ore fines followed by grinding and beneficiation using magnetic separation. The hematite iron ore used in the investigation contains 53.17% T Fe, 10.7% SiO 2, and 4.5% Al 2 O 3.

However, processing of low-grade magnetite ores is characterised by poor separation efficiencies due to poor liberation and complexity of the ore. Magnetite is strongly magnetic and magnetic separation is generally applied in the beneficiation process of …