Klipfontein concentrator gets R17m refurbishment
July 2002
Level Measurement & Control
Metso Minerals has recently replaced and commissioned 20 flotation cells at Anglo Platinum's Klipfontein concentrator in the mine refurbishment programme. The order, valued in the region of R17m, was for four 30 m3 and 16 10 m3 tank cells. The units will be replacing and performing the duties of 200 1 m3 flotation cells.
Overview of the new flotation circuit at Anglo Platinum’s Klipfontein concentrator
The operation is equipped with froth image control systems and is the first platinum installation of this type for the company in southern Africa and one of very few in the world. The system screens the process of individual cells, continually monitoring the froth velocity and adjusting the airflow rate, for optimum mass pull.
"It is designed to assist plant personnel with achieving better recoveries and grades by making operating changes, keeping production and quality targets on line," says Mervyn Ruthnasamy, manager for Metso Minerals Cisa division, southern Africa.
"The images, processed on a computer, host a Metso Minerals Cisa's OCS optimising control system and offer continuous froth visualisation in the control room. Added benefits include a control strategy developed to act on the images received from the cameras," comments Ruthnasamy.
The froth in the flotation cells
The replacement programme includes the old scavenger, cleaner and crusher classifier overflow flotation sections and was built as a turnkey operation. The design features a larger cylindrical tank that improves air dispersion and promotes surface stability. All points on the tank periphery are equidistant from the rotor discharge, improving mixing efficiency and air distribution. Enhanced flotation performance is achieved by maximum particle-bubble contact within the mechanism and flotation tank. Effective solids suspension must be present during operation and re-suspension after shutdown.
This plant is the sixth Anglo Platinum plant where Metso Minerals' Svedala RCS flotation cells have been installed. The company has installed in the region of over 400 units worldwide and 300 of these are in South Africa.
For more information contact: Metso Minerals, tel: 011 961 4000.
Further reading:
A fresh approach to dairy processing
VEGA Controls SA
Level Measurement & Control
Ensuring the quality and safety of milk throughout the production process is of the utmost importance in the dairy industry. The VEGABAR pressure transmitters are suitable for hygienic applications. They are an asset in the dairy industry and have been used with success for measuring the milk level and the process pressure in storage tanks.
Read more...
Simple and efficient level measurement in the mining, minerals and metals industries
Endress+Hauser South Africa
Editor's Choice Level Measurement & Control
Measuring devices in the mining, minerals and metals industries face the challenge of varying material states and long distances in measurement height. Endress+Hauser’s answer to these challenges is the new Micropilot family.
Read more...
Level measurement of an acid dosing tank at a WWTP
Level Measurement & Control
Ferric chloride and other acids are essential chemical substances in water and wastewater treatment. To control the dosing of acid solutions, an Australian wastewater treatment plant uses a special container to store, mix and add these chemicals. The company opted in favour of KROHNE’s OPTIWAVE 1540 radar level transmitter
Read more...
Powering sub-Saharan Africa’s energy future
VEGA Controls SA
Level Measurement & Control
Crude oil storage plays an important role in the energy infrastructure of sub-Saharan Africa. The management of crude oil storage in comes with numerous challenges, including safety concerns, environmental conditions and infrastructural limitations.
Read more...
A new era in radiometric level and density measurement
Mecosa
Level Measurement & Control
The LoopSeries LB 430 radiometric detector from Berthold Technologies has a revolutionary power solution and sets new standards in level and density measurement.
Read more...
Level measurement of leachate from sewage sludge humification
Level Measurement & Control
A municipal utility in eastern Germany operates a state-of-the-art wastewater treatment plant with sustainable sludge treatment. The ultrasonic signal was being partially deflected by the wind, leading to frequent false measurements and inefficient process workflows. The problem was solved by replaced the ultrasonic level sensor with KROHNE’s OPTIWAVE 1540 non-contact radar.
Read more...
Groundbreaking measurement system
Mecosa
Level Measurement & Control
Berthold Technologies has launched the LoopSeries LB 430, an innovative, industry-leading measurement system designed to enhance operational efficiency with advanced level, density, and level switch capabilities.
Read more...
Level measurement of a water sump at a sewage treatment plant
Level Measurement & Control
A major city council in South East Queensland, Australia maintains and operates a wastewater treatment plant (WWTP) for municipal, industrial and agricultural wastewater. Due to the risk of flooding, the water sump must be continuously monitored. The solution is KROHNE’s OPTIWAVE 1540 radar level transmitter.
Read more...
Simplicity in measurement
Endress+Hauser South Africa
Level Measurement & Control
Endress+Hauser’s new 80 GHz compact radar range is designed to help customers reach their compliance targets through simple yet efficient measurement solutions.
Read more...
Case History 196: Unstable condensate level control.
Michael Brown Control Engineering
Editor's Choice Level Measurement & Control
The operators in a petrochemical refinery were having great trouble in trying to stabilise the condensate level in a vessel, and this was adversely affecting other loops downstream. Several unsuccessful attempts had been made to retune the controller.
Read more...
printer friendly version