Sierra Leone’s New Tunkuliri Project Adopts Sonar Flow Meters
Release time:
2025-12-22
Sierra Leone is located in West Africa and boasts favorable natural conditions as well as abundant mineral resources. Following the collapse of the colonial system after World War II, Sierra Leone broke free from British colonial rule and became an independent nation. Today, Sierra Leone enjoys political stability and a recovering economy, serving as a successful model for transitioning from chaos to governance and achieving peaceful reconstruction.
Sierra Leone boasts a unique geological structure and abundant mineral resources, with iron ore serving as the cornerstone of its economic development. In September 2020, Qinghua Investment Co., Ltd. of Sierra Leone took over the Shansteel Sierra Leone Mining Project. The first phase of the project went into operation in March 2021. Since its launch and operation, the project has achieved seamless integration across the entire industrial chain—from mine production to rail transportation and port-based maritime shipping—injecting new momentum into the development of Sierra Leone’s iron ore industry.
Why use a sonar flowmeter for magnetic iron ore?
Electromagnetic flowmeters operate on the principle of Faraday's law of electromagnetic induction. When the slurry contains magnetic materials, there will be a significant deviation between the flow velocity measured by the electromagnetic flowmeter and the actual flow velocity. Moreover, this deviation varies depending on changes in the solid content of the slurry or fluctuations in the flow rate—and such deviations are random and unpredictable. As shown in the test conducted by Australia’s FMG company in the figure above, these are the deviation data obtained when an electromagnetic flowmeter measures magnetic slurries. Therefore, customers dealing with magnetic iron ore tend to prefer ultrasonic flowmeters.
Ultrasonic flow meters are not only the best choice for customers dealing with magnetic iron ore—but increasingly, they’re also being adopted for slurries containing magnetic substances, highly abrasive materials, severe scaling, and air bubbles. With their precise measurement capabilities, maintenance-free operation, and long service life, ultrasonic flow meters give mining customers peace of mind!
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