NORDIC SUPPLIERS
President and CEO of Normet Group.
Another new Normet facility for equipment assembly, manufacturing of construction chemicals and global service centre was inaugurated May 3 in Jaipur, Rajasthan, India. The inauguration was attended by numerous guests of honour including Ramki Ramakrishnan; Chief Commercial Officer of Hindustan Zinc Ltd, Normet’ s global and local management and other Normet personnel.
This facility has the capacity to make new generation equipment and high technology construction chemicals along with providing life cycle support of a large equipment base in India through a highly competent service support team and rebuild facility. It will be the mother hub for a spare parts support network for India, a centre of excellence for skills and competence development and an R & D centre for construction chemicals.
“ The inauguration of the facility is an important step for Normet in India. This facility, where we have integrated most of our operations under one roof, will help us to serve our main customers better and at the same time help them to achieve their goals for productivity, safety and efficiency,” said Lindahl.
Process equipment
Based on extensive market research and industry feedback, the Metso MHC Series Hydrocyclone
was developed focusing on delivering improved process performance and maintainability. To ensure the designed features meet the targeted results in production, Metso launched an extensive validation process covering various hydrocyclone sizes and applications in both pilot and field trials. The laboratory testing was performed in the Metso York Laboratory in Pennsylvania, US. The targets for the initial testing were to evaluate efficiency, sharpness, fines bypass, and cut size for a homogenous ore type( limestone).
The results from the laboratory test indicated very encouraging performance from the MHC internal geometry. At a reasonable operating pressure of 124 kPa, the cut size on a 250 mm hydrocyclone is below 30 μm. When operating in this condition, the cyclone efficiency is almost 90 %. Efficiency is defined as the mass percentage of product size in the hydrocyclone feed that reported to the overflow( product size defined at the 80 % passing point of the overflow).
For the field trial, a Metso MHC650( 650 mm diameter) was installed in the grinding circuit at a copper concentrator in southwest US. The goal of testing a production unit in a large-scale copper mine was primarily for wear component prototyping and continued process data collection.
Various grades of rubber and polyurethane have been tested within the different hydrocyclone components. Ceramic inserts into polyurethane was first introduced as an apex insert, and secondly at the bottom of the conical section. The ceramic components are still in operation and are the focus of current wear component development and prototyping.
By early March, that field trial has been in operation for over 12,000 h. The data generated from the trial is being applied to Metso’ s empirical hydrocyclone model used for sizing and simulation purposes. " It has confirmed the MHC Series achieves the performance for industry leading hydrocyclone technology. The field trial also confirmed that the MHC performance is predictable and responds as expected due to changes in operating conditions.” Testing in the field and on the pilot scale is an ongoing process as the Metso MHC product line continues to develop.
“ Based on the test program, the MHC Series performance is proving to be industry leading with an increased flow rate for a given pressure drop. Wear components within the individual units are optimised to promote even wear life throughout the entire assembly, resulting in increased overall wear life and consistent performance throughout the hydrocyclone lifecycle. These advancements have great potential to deliver long term benefits in improving classification efficiency while considering capital costs and operating costs.”