Bhubaneswar (Odisha) [India], July 10: The worldwide demand for high-quality iron ore is growing, prompting mining firms to search for new methods to extract and deal with this invaluable useful resource. By eliminating gangue supplies, the beneficiation process will increase the iron ranges in the focus. Sree Metaliks Restricted, a significant participant in the iron and metal sector, has used progressive bodily beneficiation strategies to spice up total effectivity. This text discusses the significance of iron ore beneficiation and the procedures utilized by Sree Metaliks to maximise profitability.

 The Significance of Iron Ore Beneficiation: 

 The focus of the desired mineral extracted from the ore determines the profitability of a mine at its core. Alumina and silica are the commonest contaminants in iron ore. Impurities in mineral phases present in iron ore embody kaolinite, gibbsite, and quartzite. Hematite and goethite are the commonest iron phases present in iron ore. Alumina and silica are diminished through the beneficiation course of using varied strategies, resembling gravity and magnetic separation, primarily based on their bodily qualities. The focus obtained by bodily beneficiation ought to be applicable to be used in the blast furnace, DRI, sinter, and pellet manufacturing processes, all of which can finally be used to create metal.

The Iron Ore Beneficiation Course of:

 The ore is brittle as a consequence of its goethetic-hematite composition. It’s related with clay minerals and accommodates a major amount of pure fines from iron ore mining. To reinforce lean-grade iron ore fines, SreeMetaliks makes use of a radical iron ore beneficiation course of (moist course of). As a result of the ore accommodates pure fines and kaolinite, the scrubbing approach is used to take away slime (under 100 m) earlier than sending the grinding unit. The lean-grade ore is washed and sorted into different-size fractions utilizing a drum scrubber and a vibrating display screen. The coarse fraction is jigged to generate DRI feed materials. The -5mm measurement fraction materials is once more classed at 1 mm and beneficiated to generate sinter feed supplies using a sophisticated gravity separation course of (in a sophisticated tremendous jig with excessive frequency and diminished amplitude). The rejected supplies from the gravity course of and the -1 mm measurement fractions are pulverized in a closed circuit ball mill using a hydrocyclone and a high-frequency display screen. The bottom product, together with the slimes, is handled utilizing a moist high-intensity magnetic separator (WHIMS) to boost the Fe worth for the preparation of pellet feed supplies. The non-magnetic portion is lastly rejected as tailings. 

 Outcomes and Advantages:

 The beneficiation technique adopted by Sree Metaliks has yielded wonderful outcomes. Initially, hematite iron ore fines with Fe contents starting from 55 to 57% are handled to supply a focus with Fe contents starting from 61-62%. This superior focus is suitable for the manufacturing of high-quality iron ore pellets. Whereas tailings are misplaced at a price of 20-25%, they nonetheless include roughly 38-40% Fe and will be repurposed to make value-added merchandise or additional recuperate iron values utilizing superior processes resembling the discount roasting course of. 

Key Benefits of Iron Ore Beneficiation: 

Hazardous Materials Elimination: Sree Metaliks’ iron ore beneficiation course of prioritizes environmental sustainability. It eliminates the utilization of poisonous merchandise, making certain employee security and lowering the affect on adjoining ecosystems. 

Water Conservation: With an emphasis on accountable water administration, Sree Metaliks’ beneficiation course of assures low water loss, resulting in sustainable water consumption and conservation. 

Beneficiation permits for the environment friendly utilization of lean-grade iron ore fines that might in any other case be judged inappropriate for iron manufacturing. Sree Metaliks maximizes the exploitation of treasured minerals whereas lowering waste by upgrading these ores.
Productiveness Improve: The elevated focus of iron obtained by beneficiation has a direct constructive affect on the productiveness of iron-making crops. Increased-quality feedstock advantages blast furnaces, DRI amenities, and sintering operations, leading to elevated power and materials effectivity and decrease prices. 

Iron ore beneficiation is vital to the mining business’s profitability and sustainability. Sree Metaliks has efficiently elevated the iron content material of lean-grade ores whereas minimizing the use of hazardous supplies, conserving water assets, and decreasing the carbon footprint in downstream crops through the manufacturing of high-quality focus.
“The brand new beneficiation course of enhances our current strategies and permits us to extend the iron content material of lean-grade ores even additional.” We will extract much more invaluable supplies and scale back waste by leveraging this technique, resulting in a extra sustainable mining method,” stated Mr. Kalyan Maity, Director of SML.
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