Beating the 6-Month Destruction Cycle: A Case Study in Severe Slurry Flow Measurement

In the mineral processing and extractive metallurgy sectors, slurry flow tracking is notorious for being an engineering graveyard. Jagged, high-hardness solid particles suspended in chemical matrices create an ultra-abrasive environment. For standard electromagnetic flowmeters, this results in rapid internal liner erosion, electrode scoring, and catastrophic signal failure.

Slurry Flow Meter Case Study | RB Flowmeter

A prime example of this industrial bottleneck occurred at a major gold and copper mining and smelting facility in China. The plant was trapped in a costly loop: their inline flowmeters handling dense, abrasive tailings and mineral ore slurries were completely destroyed every 6 months. The frequent shutdowns required to cut pipes and swap out units severely damaged their production consistency and inflated operational expenditure (OPEX).

Looking for a long-term solution, their plant engineering team partnered with RB Flowmeter to audit the application.

The Engineering Diagnostic: Materials and Noise

The root cause of the 6-month failure cycle was twofold:

• Mechanical Shredding: The standard polymer liners previously used possessed poor elastomeric resilience against the high-velocity, sharp-edged copper and gold ore concentrates.
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• Electrochemical Slurry Noise: Solid particles constantly striking the measurement electrodes generated heavy microvolt voltage spikes, causing the SCADA system to receive highly erratic flow data.

The Solution: Deploying the RBHEF-LS Series

Our team introduced the RBHEF-LS High-Performance Slurry Series, introducing two critical engineering upgrades to the site:

• Advanced Composite Armor Lining: We replaced the failing polymer units with our proprietary ultra-high-density composite liner. This material features an exceptionally low friction coefficient and extreme structural hardness, allowing heavy mineral particulates to slide past the internal boundary layer without scratching or gouging the matrix.
• Mual-Frequency Signal Processing: The RBHEF-LS transmitter utilizes an advanced high-frequency excitation algorithm. The digital signal processor (DSP) actively isolates the baseline fluid induced voltage from the low-frequency mechanical friction noise, providing a crystal-clear, steady reading even at solid concentrations exceeding 35%.

The Result: A 500% Extension in Asset Lifecycles

Through precise material selection and dedicated technical application support, the plant achieved a major breakthrough. The flowmeter replacement cycle was successfully extended from 6 months to over 3 years.

By transforming a vulnerable asset into a rugged, reliable component, the factory eliminated frequent maintenance shutdowns, slashed their spare-parts inventory costs, and ensured continuous, stable plant optimization.