Posts Tagged ‘displacement pump’

Simplified servicing in beneficiation plant

Thursday, November 16th, 2017 von admin

Until January 2017, a copper beneficiation plant in Zambia was using pumps from six different manufacturers, including units from Netzsch. Attributable to the large number of different models, this resulted in a steadily growing inventory of similar spare parts and maintenance procedures. Thereby, the effort and costs for necessary maintenance of the pumps were constantly increasing as a result. Following a thorough review of the reliability and service life of its pumps, the plant operator decided to simplify its spare parts inventory and maintenance – and only use pumps from Netzsch as a single supplier.

The Zambian company replaced 36 pumps for polymer applications and saved 1 million dollars by reducing its spare parts inventory as well.

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Improvements and cost reduction of chamber filter press feed

Wednesday, November 15th, 2017 von admin

Coal continues to be an important raw material. Speci­fically in Poland, the majority of energy is generated by converting coal into electricity. Mining operations have to use the most modern technology in order for this process to run as efficiently as possible. The Pniówek Processing Plant operates 9 chamber filter presses with 570 m3 of filtration area each.

Before modernization, 2 centrifugal pumps were used for press feeding which were consuming 560,000 kWh/year of energy. Added to this were repair costs of approxi­mately 27,000 Euros annually. In 2012, the investor decided to change the existing sys­tem and reassess the requirements and objectives of the filter press feeding modernization project, most important of which was to reduce energy consumption and extend intervals between repairs.

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Gather: From laboratory to production via pilot plant

Tuesday, April 4th, 2017 von admin

A process generally undergoes initial development within a laboratory and is then made production ready in pilot or mini plants. During this scale-up, a range of different problems can emerge, e.g., in the way temperatures behave. In a laboratory, a process may be endothermic but becomes exothermic in production. How pumps behave in relation to peripheral equipment can change under full-scale production conditions, Sven Borghoff describes a coordinated pump and drive concept which makes scaling up easier.

Dosing pumps with multifunctional extensions for different pump types often used in laboratories generally have no particularly high temperature or pumping ranges. However, when scaling up, these aspects take on major significance. Gather uses its magnetic-driven pumps (Fig. 1) here. They are available in such a broad range that when scaling up from the laboratory to production via a mini or pilot plant, the pumping and control technology can be retained. The company cooperates with the chemical industry, institutes and universities to make process development from initial laboratory trials through to production easier.

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Quattroflow: Hygienic pump for accurate flow and wide flow range

Friday, September 16th, 2016 von admin

quattrotecThe target application for this positive displacement quaternary diaphragm pump series is the continuous dosing of high-value additives in the food and beverage and personal care industries (e.g. to add concentrates to a fluid stream for soft drinks) as well as for in-line dilution. These ‘QuattroTec’ called pumps can provide a consistent flow that results in a constant and continuous dosing of ingredients in hygienic processes.

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Fristam adds double-screw technology to its pump portfolio

Thursday, May 12th, 2016 von admin

FDS_mit_FoerderschraubenThe pump casing of Fristam FDS pumps comes in three parts, consisting of an intermediate flange, the screw casing and the pump cover. This enables individual adaptation of the connections to any conceivable production system requirement. Thanks to central positioning of the gearwheels inside the bearing support area, the entire pump comes in a very compact design. Moreover, its massive shaft has reinforcements in the area of critical diameters to ensure maximum rigidity. Further stability is achieved through a combination of particular large bearings and an increased bearing distance. The result is smooth running with minimal wear.

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Lewa: New plunger pump according to API 674

Wednesday, April 16th, 2014 von admin

QuintuplexThis new generation of pumps has splitted gear housings. This special feature significantly facilitates maintenance, permitting the use of a fully balanced crankshaft which generates less noise and vibration, thus reducing wear. The power range was also extended with two quintuplex plunger pumps.  The very short design of these plunger pumps is made possible by the special alignment of the plunger and crosshead. These pumps also have high efficiency, low energy consumption, and a long service life.

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