Iron ore beneficiation with packed column

Sept. 7, 2011 - PRLog -- New technologies must be developed that achieve sharp separation at high throughput capacity, especially when treating very fine materials. These Coal Beneficiation process technologies must also maintain or improve current standards in more economic and environmentally attractive ways.


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Magnetic separation and flotation are the most widely accepted technologies for upgrading fine iron ore particles, but both processes result in iron concentrates with high amounts of very fine and/or interlocked silica particles. Gravity separation is a common process used in iron industry, but the separation efficiency becomes unacceptable with finely disseminated materials ( below 45 microns).

In recent years, several advanced technologies have been developed to improve the separation of finer materials. Sharper separation is possible under dynamic conditions and/or in multistage processes. Dynamic separators can achieve sharp separation, but they are usually complex and expensive to maintain concrete mix plant because of moving parts. Also, scale-up possibilities have not been completely proven (Sandvik and Rein, 1997). Multistage processes are energy intensive and difficult to operate and control.

Conclusions
The new Packed Column Jig separator and its control system have been presented and analyzed in detail. The following conclusions can be drawn from this work:
1. In finely ground iron ores, the packed column jig yields significantly higher grades and recoveries than do conventional flotation or magnetic separations; silica levels to less than 2% are economically achievable.
2. A two-stage packed column jig 1200tph sand washing plant  circuit with regrind to reduce concentrate size can produce higher quality concentrate at much higher iron recovery than present practices.

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Shanghai BinQ Group Co.,Ltd. is a major manufacturer of the crusher ,grinding and sand-making mills .