Slurry Density Meter Evaluates Processing Minerals, Sand without Nuclear Testing
BY Rhosonics
The Minera Mexicana “La Ciénega” has replaced nuclear gauge monitoring with slurry density meter (SDM) technology to monitor and improve tailings thickener efficiency. The Rhosonics SDM has taken up the task of improving the operational efficiency of Minera Mexicana “La Ciénega,” which is a Fresnillo PLC mine located in Durango, Mexico. The mine, which has been operating since 1992, engages in exploration, mining, and processing of gold, silver, and other minerals.
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The purpose of testing the SDM at “La Ciénega” was to evaluate an alternative to the existing nuclear density meter for monitoring density in the tailings thickener underflow. This measuring point is crucial because they need to track how much slurry is being transferred to tailings at all times. Additionally, the company wished to optimize the thickener underflow to improve operational efficiency.
The slurry density meter from Rhosonics is used by several sand producers, including a silica sand installation in Malaysia and this mineral sand producer pictured above.
The Rhosonics’ SDM was selected due to its reliable and real-time measurement results, according to the manufacturer. A 30-day trial was conducted to evaluate the use of a nuclear density gauge and the Rhosonics density meter. The SDM proved to be a better option than the existing radiation-based technology as it coped well with the measuring task and process challenges, according to the manufacturer.
The SDM uses ultrasonic technology, which eliminates the need for government licenses and the cost of employing and training specialist employees for maintenance and calibration tasks.
According to the client, the SDM was able to successfully measure density, which enabled them to efficiently monitor and control the slurry transfer process from the thickener underflow.
The SDM plays a valuable role in sand processing operations as well. Sand processing involves the treatment and separation of sand particles from the mixture to meet specific quality and size requirements. The SDM is used to measure the density of the sand-water slurry, providing essential information about the concentration and consistency of the mixture.
The slurry density meter from Rhosonics is used in this silica sand installation in Malaysia.
Deviations in density can cause issues such as pump blockages; therefore, must be monitored. Also, it indicates improper mixing, or variations in feed materials. By promptly identifying these issues, operators can take corrective actions to prevent downtime, optimize production, and improve overall process efficiency.