Global Investments For More Flexibility - Neuman & Esser

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Rock Phosphate for a Better Result The steady growth in the world population and the increasing use of agricultural land for renewable raw materials for fuel and energy generation requires increasing harvest volumes. However as the available space is limited in terms of expansion, higher yields are needed, which will lead to an increasing consumption of mineral fertilizers. This prompted our customer in Egypt to invest in the expansion of existing phosphate production. NEA received the contract for manufacture and delivery of three PM30 Pendulum Mills for the grinding of rock phosphate. The PM30 Pendulum Mill is currently the largest of the machines built by the NEA. This was in many ways a highlight. It was not just the single biggest contract in the history of NEA Mahl- und Sichtsysteme. Rather, the number of PM30s was abruptly doubled, and the position and competence of NEA as large-scale manufacturer was expanded. The customer's request that the entire manufacturing area be kept dust-free meant a special challenge, and required an increased level in the use of measuring and monitoring equipment as well as an intelligent control and regulating concept. Following commissioning in 2009, these plants will be counted among the most advanced raw phosphate grinding systems in the world. Evidently convinced by NEA's competence, NEA has recently received, from the same customer, new contracts to upgrade two of the existing PM20 Pendulum Mills built in 1988 according to the above-mentioned concept. 8 DID YOU ALREADY KNOW? Ground stock + air SHARP CUT SIZE WITH PATENT The development of new product qualities is connected with process development and optimization. The technical process for air classification has won greatly in influence over the previous years. The technology for air classification was even practiced by the ancient Egyptians, when by means of the wind "the wheat was separated from the chaff". With air classification solid is screened according to its particle size, to be exact due to their different settling velocities in the air flow. Thereby the particle size distribution of the product is varied, which has a substantial influence on the product characteristics. It is possible thereby to influence amongst others for example the color, the surface gloss, the flavour or the flowability of bulk goods. Nowadays the classification of solids with sizes of 10 µm down to a few micrometres is considered to be the state of the art. Classifier wheels are utilized for this purpose. The core unit of the classifier wheel is the rotor which has baffles inside and can run up to 100 m/s, meaning 360 km/h. Classification technology also plays an important role at NEA, which is reflected by the classification development that has taken place over the previous years. The development step from static to dynamic classification, the impeller wheel classifier, brought advantages with reference to product fineness and the possible solid throughput.
Purge air Actuation Coarse Fines + air Classifier wheel Cyclone housing Secondary air Discharge system The cyclone classifier is utilized at NEA-plants for classification within the finest range. Optimization of the product feed and the classifier wheel geometry led to the cyclone classifiers of generation II. The cyclone classifier of generation III has just been developed. This air classifier generation will, as with all NEA-cyclone classifiers, be operated as an inline-air classifier combined with the plant components classifier mill, cyclone and filter. The special feature for generation III is the increase in efficiency or the sharpness of classification, which facilitates for a strong reduction of fine material in the 10 µm-particle size range whilst retaining the same product yield. The efficiency is especially reflected when considering the low material loss. This grading led to a lowering of material loss of up to 8%, which means with a middle production total of 500 kg/h a minimum cost saving of at least 16,000 EUR monthly. The innovation has been evaluated by the European patent Authorities as so important that NEA was granted the patent for the cyclone classifier generation III on June 30th , 2008. MEDIA ROOM "We talk recips" at the Turbo Show 2008 With this message Manfred Salgert and Brian Bertelsen, both Presidents of NEUMAN & ESSER GROUP in USA, signalled the trade fair visitors that this is the specialist language, which they speak as well as their own mother tongue. The exhibit, a horizontal two-crank compressor of size 130 with open viewing positions proved to be the attraction magnet on the fair stand. Both 20-scale and 500-scale connecting rods - displayed as a mirror image for the production band width - amazed many people. Despite hurricane Ike, which caused the trade fair to close a day early, the Texan colleagues were extremely happy about the multitude of discussions that took place concerning new projects. The sales engineers of NEA USA are really excited about their "Compressor Day" on Dec. 3rd, 2008, which will offer a good opportunity of more in depth discussions concerning the project contents at their new company premises in Katy, TX. “Sharp” Appearance at the POWTECH 2008 The company NEA Grinding and Classifying Systems presented themselves with a new and attractive trade fair stand layout. With the motto "Sharp classification" there were not only spicy chilli's to offer but also the newest developments from the NEA classifying technology. The inside rotor of the pendulum roller mill PM12U5 was amongst the main attractions at the trade fair and drew the interest of a multitude of visitors. Especially large interest arose from the improved pendulum design, which is designed for a far quicker exchange of the grinding roll. This ensures highly reduced standstill and maintenance times. The large number of contacts made also brought a high number of promising new projects. A contract for the new ICM 76/96 as well as for the conversion of pendulums to the new grinding roll mountings was the crowning of the success for the trade fair appearance. 9
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Global Investments For More Flexibility - Neuman & Esser

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