Iron Ore Beneficiation Process

Xinhai Iron Ore Beneficiation Process

With the rapid development of the global economy, steel industry has been developed rapidly. The increasing demand of iron ore at home and abroad further stimulates the development of the benefication of iron ore. As one of the leading enterprises in domestic mineral processing industry, Xinhai has been dedicated commitment to the research and development of iron extraction process and equipment for more than 20 years. According to the magnetic difference of different iron ore,

Xinhai finally established two iron ore beneficiation systems:

Strong Magnetic Iron Extraction Process

Single magnetic iron ore, strong magnetism, easy to separate

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Process Flow

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Weak Magnetic Iron Extraction Process

Apply to hematite, limonite, specularite, siderite, martite or compound iron ore Low grade, wide range of particle size, complex mineral composition, refractory iron ore

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Liaoning Anshan 500t/d Iron Extraction Plant


On July 14, 2009, Xinhai signed a deal with customers to undertake one-stop mineral processing service about Liaoning Anshan 500t/d iron extraction plant. The project was completed on July 15, 2010 and then put into operation. The final recovery rate was up to 80.5%, estimated annual output of iron ore concentrate was up to 1.8 million tons, the annual turnover reached 30.7 million, 33.8772 million net profit for the year.

No Task Name Equipment Name and Specification Quantity
1 Primary and secondary grinding MQGg 1836 Grid Type Ball Mill 5*5
2 Primary grinding and classification 2FLG-2000 Spiral Classifier 5
3 secondary grinding and classification 2FLC-1500 Submerged Spiral Classifier 1
4 Classification before separate XC II F 200 Hydrocyclone 3
5 Gravity separation BLL-2000 Spiral Chute 27
6 Magnetic separation CTBy1030 Magnetic Separator CTGG-0814 Magnetic Drum 8*4 4*2
7 Flotation (Roughing) SF-8 Flotation Cell 16
8 Flotation (CleaningⅠ) JJF-8 Flotation Cell 7
9 Flotation (CleaningⅡ) SF-4 Flotation Cell 5
10 Flotation (CleaningⅢ) JJF-4 Flotation Cell 4
11 Dewatering VD9 High Frequency Dewatering Screen 8*4
12 Iron concentrate thickening NZSG-2.5 Efficient Improved Thickener 2
13 Filtration PG27-6 Vacuum Filter 15

Liaoning Anshan 500t/d iron extraction plant originally used weak magnetic - strong magnetic opening process. The practice showed that this process failed to select the final qualified iron ore concentrate, and the recovery rate didn’t reach the standard. Therefore, customers specially commissioned Xinhai mineral processing institute to reform. After testing the samples, Xinhai laboratory decided to adopt stage grinding - coarse and fine separation - magnetic separation - gravity separation - anion reverse flotation process. The grinding system consisted of 10 primary ball mill and 4 secondary ball mill. At the same time, Xinhai used fine screening-regrinding technology, which greatly improved iron concentrate grade. After a series of transformation, the iron concentrate grade was up to 72.25%, and the recovery rate was as high as 80.5%.

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