Company insight
Fast and local spare part delivery and service
When it comes to procuring spare parts for mining machinery, ease of sourcing and installation is key to getting machines moving again. NETZSCH Pumps & Systems provides a localised service to companies, allowing them to utilise facilities nearby and get up and running with little time wasted.
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or over 60 years, NETZSCH Pumps & Systems has served markets worldwide with NEMO progressing cavity pumps, TORNADO rotary lobe pumps, NOTOS multi-screw pumps, PERIPRO peristaltic pumps grinding machines, barrel emptying systems, dosing technology and a whole range of accessories, providing customised, sophisticated solutions for applications in every type of industry.
Its commitment to providing solutions to its clients can be evidenced in how it assisted a Brazilian mining group that used multi-screw pumps from different manufacturers to pump oil in order to lubricate and form the journal bearing of ball mills. As contamination of the oil was frequently detected, the pumps had to be replaced regularly. Due to the lack of on-site services on behalf of the manufacturers, the Brazilian mining group were met with long delivery times for replacements, as well as high costs. In order to resolve this issue the mining company decided to switch to the locally manufactured and supported NOTOS pumps from NETZSCH do Brasil in Pomerode. This company is part of the global company NETZSCH Pumps & Systems, headquartered in Germany. A deciding factor for this was that the mining group would be able to use the services of the Brazilian production plant, cutting import and transportation costs. “The multi-screw pumps are used to pump oil for the bearings of ball mills. In this application, the oil both lubricates and carries the load of the shaft,” says Roger Willis, global business field manager chemical for pulp and paper at NETZSCH Pumps & Systems. The customer used two multi-screw pumps per mill. Up to June 2018, one model pumped mineral oil with a viscosity of 200cSt at a maximum flow rate of 500L/
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A lubrication skid installed by NETZSCH do Brasil on a ball mill to avoid repeated replacement.
min and a pressure of 70 bar. The three additional units pumped ISO VG 220 oil up to 220cSt. The flow rates were a maximum of 500L/min at 25 bar, 400L/ min at 80 bar or 144L/min at 80 bar. Due to the high contamination of the oil, the original eight pumps had to be replaced every six months. As the customer used a large number of pumps, which were imported, the procurement of new pumps and spare parts was costly, had long delivery times and required additional stock for emergencies. “The switch to NOTOS pumps from NETZSCH happened very quickly and was motivated by the desire to simplify spare part procurement, lower the spare part costs and have service engineers available on-site,” explains the Brazilian colleague of Roger Willis, Monica Mitterstein, sales engineer for mining at NETZSCH do Brasil. “Furthermore, the new pumps
were expected to be more reliable than the previous models.”
Low costs and local service For three of the four pumps used in Brazil, NETZSCH only provided the cartridge, as the housings of the original pumps could still be used with no problems. This benefitted the customer, as the costs for installation remained low. Three completely new and efficient NOTOS pumps were also made available. NETZSCH supplied the complete unit for the fourth model as the cartridge did not fit into the housing of the original pump.
“Also, the fourth model 3NS works with no problems and meets all the customer’s requirements,” adds Monica Mitterstein. The customer is satisfied and happy to find a good strategic partner in NETZSCH. ●
www.pumps-systems.netzsch.com World Mining Frontiers /
www.nsenergybusiness.com
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