Moisture Measurement for Minerals

Posted by: | July 11, 2013 | 0

Mineral industry
 
In the Mineral industry, moisture measurement is very important during mineral processing from mining to the end product. MoistTech has thousands of installations worldwide in mineral applications. We offer both online for the continuous readings of NIR moisture measurement and laboratory NIR moisture sensors for spot tests near lines or in your quality control labs.
 
Moisture Measurement
 
Moisture measurement is critical in all aspects of the mining process. As a result, mining companies are constantly adjusting moisture to maintain the quality of their product. Advances in real-time sensing, data collection, and data analysis and interpretation helps to determine the characteristics of the materials prior to processing providing process efficiency and optimization. Regular measurements of moisture in minerals remain a necessity for control of drying, thereby reducing treatment costs. Additionally, small variations and excess moisture in mixes can result clumping affecting quality and consistencies. Too dry of a product can result in excess dust. Measuring moisture prior to crushing can control particle size and also provide dust suppression. During the drying stage, in-process measurements ensure optimization and elimination of over drying, which can lead to product that is out of specification, degradation and an excess of dust.
 
 
Measuring moisture prior to crushing
Measuring and controlling moisture can reduce transportation costs due to shipping excess water. Additionally, moisture control stops products from freezing during shipping and transportation. Testing moisture content throughout the process also provides mineral manufacturers cost savings in energy & fuel costs, as well as having less product waste. With continuous NIR online moisture testing, manufacturers can monitor moisture levels which they in-turn, can precisely control their dryers to optimize the production process with minimum energy requirements. MoistTech’s NIR moisture sensors are easy to set-up and use which will provide instant and precise measurements due to no constituent losses in handling.

 

controlling moisture
 
Installation
We recommend installing sensor(s) in several locations though out the process. A sensor should be installed over the conveyor before the final crusher to enable elimination of impurities, as well as at the exit of the final crusher or dryer, to prevent over drying and dust The sensor should be installed several inches above the conveyor belt or screw conveyor so that it can continuously monitor the process and can control the moisture content either manually or automatically in the finished product. MoistTech is very experienced with the requirements in the mineral production process. Our sensor calibrations, measurement wavelengths, algorithms and sensor optical requirements are pre-set at the factory. On moisture analysis involving dried minerals, accuracies can be expected to be +/-0.1%. The outputs can be adjusted to optimize PLC or recording requirements. For additional information or to discuss your application, please contact us at Info@MoistTech.com
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