Tag Archives: slurry flow

Emerson cuts through the noise with new Slurry Magnetic Flow Meter

Metallurgy, Mineral processing, Mining equipment, Mining services, Steel and iron ore, Water management, , , , ,

Global technology and engineering company, Emerson, has launched a new slurry magnetic flow meter specifically designed for high noise and slurry applications in industries including mining.

The Emerson Rosemount™ MS Slurry Sensor with the Rosemount 8782 Slurry Transmitter features robust coils and advanced signal processing, with a responsive yet stable flow signal possible even in high noise applications, according to the company.

“With over 25 years of experience delivering products for these challenging applications, the new Slurry Magnetic Flow Meter helps improve product quality, reduce raw material cost, and minimise waste and re-work,” Emerson said.

The Slurry Magnetic Flow Meter, or Slurry Mag, provides a flow measurement solution for customers with fluids that contain large solids, mining ore, pulp or sand, or that experience high process noise or signal instability. It uses the latest advanced signal processing to adapt to changing process conditions in real time and eliminates noise from the flow signal without using excessive damping. The latter gives operators confidence in their measurement calculations, according to the company.

The Slurry Mag Meter includes more standard diagnostics such as grounding and wiring fault detection to help ensure the meter is installed correctly the first time. Optional advanced process diagnostics, meanwhile, help provide insight into performance through a high process noise detection diagnostic, as well as enable proactive maintenance in applications where coating may be a concern.

Finally, the 8782 contains Emerson’s patented Smart Meter Verification capabilities providing a simplified means of troubleshooting or verifying the meter, “taking a process that used to take hours and simplifying it down to minutes”, Emerson said.

Designed to work with the MS sensor, the 8782 transmitter is it is also compatible with existing 8707 installations, “making the performance, signal processing and advanced diagnostic capabilities available to anyone who is already using Emerson’s solutions for these challenging applications”, the company said.

Laura Chemler, Product Manager with Emerson’s Automation Solutions business, said: “Through the utilisation of advanced features, the Rosemount Slurry Magnetic Flow Meter can help our customers better achieve their operational goals.

“The advanced signal processing is able to adapt to changing flow rates without getting bogged down by traditional damping practices, providing more accurate flow rate feedback when it’s needed most, which in turn helps to ensure an efficient overall process that minimises waste and optimises utilisation of precious resources.”

Weir Minerals Africa on the importance of application-specific valves

Equipment maintenance, Mineral processing, Mining maintenance, Mining services, Water management, , , , , , , ,

Weir Minerals Africa has stressed the importance of using quality original equipment manufacturer (OEM) products “engineered specifically for their application” when it comes to using valves in abrasive and corrosive slurry conditions.

Without such components, valves can be quickly worn out and costly downtime can occur, the company said.

Ronald Govender, General Manager – Process Equipment at Weir Minerals Africa, said: “With our comprehensive range of slurry valves, we can help customers select the right equipment to suit the pressure of their system, the chemical make-up of their slurries, and the physical nature of the solids they process.

“We can provide the right wear options, actuation mechanisms and control accessories that will ensure optimal plant uptime.”

Weir Minerals’ Isogate® range of slurry valves is proven to be reliable and versatile, according to Weir, operating under wide pressure and temperature ranges. “For longer life, valve sleeves come in a variety of materials including genuine Linatex® premium abrasion-resistant natural rubber. To reduce downtime and overall cost of ownership, all wear parts are easily replaced in the field,” the company said.

The range includes mechanical pinch valves, with open or closed body, and pneumatic pinch valves with one-piece sleeve or two-piece liner. Isogate knife gate valves are known for their heavy-duty performance, even in coarse slurries, with pressure ratings from 10 to 51 bar, Weir said. These are uniquely designed with both ease of maintenance and low overall cost of ownership in mind and are engineered to handle the harshest and most abrasive process flow conditions, according to the company.

Weir Minerals’ check valves are single, non-return units that benefit from 20 years of in-field experience in the most arduous slurry applications, Weir said. Within this range, Autoball® valves, which are actuated with differential pressures, enable quick changeover between duty and standby pumps.

“An exciting addition to our offering is the Delta Industrial™ range of knife gate valves, which set the standard for high performance in slurries,” Govender said. “These valves guarantee zero leakage, due to their unique transverse seal and shear gate design.”

The design protects the primary elastomer seal from the slurry flow to avoid wear, while a precision-machined metal seat provides a secondary seal. “The transverse seal features an upper and lower scraper, with an elastomer that is energised by a pliable compound – even while the valve is in service.”

Designed for the most demanding processes, Delta Industrial valves have been in use for over two decades in mill circuits, tailings transport, mineral separation and leaching applications for slurries up to 120 bar working pressure.

“We bring a full basket of valve solutions to customers,” Govender said. “Other valves in our liquid service range include butterfly, diaphragm, globe and trunnion-mounted ball valves.”