Optimization of Beneficiation Process for JISCO's Magnetite from Suspension Magnetization Roasting
Based on the process mineralogy study,an experimental study on grinding-separation technique was performed for JISCO's magnetite obtained from its suspension magnetization roasting process.In the experiment,a 110 mT low-intensity magnetic separator was firstly adopted for pre-concentration.The middlings were reground and processed by magnetic separation for enrichment and tailings discarding,and the obtained concentrate was subjected to reverse cationic flotation.Finally,the whole process produced the comprehensive concentrate grading 60.06%TFe and containing 5.17%SiO2,with metal recovery of 84.27%.In comparison with the previous processing technique,the TFe grade of concentrate is improved by 1.96 percentage points and the metal recovery is increased by 1.38 percentage points,while the SiO2 content falls by 1.06 percentage points.
magnetization roastingliberation degree by grindinggrindabilitymagnetic separationreverse cationic flotationiron concentrateiron improvement and silicon reduction
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