Improve your mining separation processes

It has been shown that the concentration and the irrigation flow rate of the acid solution has a significant impact on the yield and the acid consumption. Endress+Hauser can offer measuring instruments for parameters that can withstand the aggressive nature of the acids and deliver reliable data.

• Our digital analytical sensors feature non-contact digital data transmission and simple sensor exchange using pre-calibrated sensors reduces process downtime and regular regeneration extends sensor lifetime.

• Our electromagnetic flowmeters are available as both compact or remote version.

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Endress+Hauser not only has instruments for all these tasks but also offers a variety of measuring technologies to ensure you can use the optimum instrument for your process – all from a single source.

• For the measurement of the feedstock, we recommend using an electromagnetic flowmeter with integrated solids content calculation.

• To determine froth height and froth/slurry interface the ideal solution is using two ultrasonic sensors. One measures the distance to the froth, the second sensor measures the distance to a target plate connected to a rod and a conical float..

• Our digital analytical sensors for pH and Eh measure reliably even in harsh environments.

• The dry solids content, the feed rate and the froth height can be used as a feed forward signal for the xanthate, frother and pH modification chemical dosing control loop. Our Coriolis flowmeter can input these parameters and enable accurate dosing.

• Air is used in flotation for agitation. By measuring the air flow the costs for creating compressed air can be optimized. Our vortex flowmeter is not affected by plant vibration or air hammers, and offers high accuracy and a wide measuring range.

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Important indicators are bed level, bed mass, underflow density and flow to calculate the total slurry volume, and overflow clarity for final quality assurance. By measuring all these parameters, operators can make the whole process more efficient and safer by reducing the risk of tank overflow.

• Measuring the bed level is one o f the most important parameters for this process. It is ideally measured using submersible sonar technology. Depending on the bed level, the dosing of the flocculent - measured with a flowmeter - can be optimized.

• Bed mass in the thickener is measured with an abrasion-resistant pressure device,

• To measure density in the underflow we recommend using either a radiometric density measurement device or an electromagnetic flow sensor with integrated solids content calculation.

• With a turbidity sensor the clarity of the overflow and by that the overall quality of the thickening can be controlled.

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