Measuring density in the flotation process (4/4)

Posted on Thursday, 25 June 2020 at 11:58

In the previous blog, we discussed the role of the flotation operator and instrumentation for an efficient enrichment process. In this blog, we will describe the fifth key reason to measure density in the flotation process. Also, you can read about the alternative for radiation-based measuring devices.

Ore piles up in the tank

One of the issues that can occur in the flotation process is that the ore in the flotation tank piles up (XinHai, 2020), this could have been caused by a too high feed slurry solid content, which can be monitored in real-time by the use of a density meter. Other reasons could be changes in pressure, a high inflating volume and changes in the suction capacity of the suction tank. The flotation operator can use different tools to make the slurry flow again.

Available equipment

Density measurement is usually done by radiation-based measuring devices. This technology has been used in the mineral processing industry for decades. However, nowadays governmental regulations are getting stricter and associated costs are increasing. More nuclear density meters are being replaced by alternatives. These alternatives can do the same job, without administration costs and health and safety risks related to the nuclear source.

Slurry Density Meter (SDM)

The eco-friendly Rhosonics Slurry Density Meter (SDM) has been introduced in 2016 and is the first real alternative to substitute nuclear density meters, reaching hundreds installations worldwide in just a few years.


As discussed in our flotation blogs, measuring density in the flotation circuit is important. Density measurement can be used for advanced process control, preventing falling slurry levels and ore piling up in the tank, and to increase the efficiency and recovery in the flotation process. Together with flow measurement, the density can also be used for the mass balance, and to calculate the performance of the circuit.

More information?

Rhosonics has more than ten years of experience in using ultrasonic technology for non-nuclear density measurement in the mineral processing industry. We can help you to replace nuclear density gauges. Our density meters are used in different applications, such as ball mills, cyclones, flotation cells and in the thickening process.

Please contact Rhosonics if you want to learn more about density measurement in a non-nuclear way. Our team is ready to replace your nuclear density gauge.

<< Previous blog

You can also read our other blogs or request our whitepapers to learn more about density measurement. We have written several blogs about the grinding circuit and thickening process.

Want to have frequent updates on our products? Then please subscribe to our newsletter or follow us on our social media accounts at LinkedIn and Facebook. You can also join our free webinars, click here to register.

Tags: Slurry Density Meter, Non Nuclear Density Meter, Densimetro no nuclear para pulpa, Densímetro não radioativo para polpa