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NETZSCH Fluidized Bed Jet Mill CGS

NETZSCH Fluidized Bed Jet Mill CGS
12Pages

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NETZSCH Fluidized Bed Jet Mill CGS Ultra Fine Dry Grinding Business Unit GRINDING & DISPERSING

NETZSCH Fluidized Bed Jet Mill CGS Fluidized Bed Jet Mills set future trends for the ﬁne grinding of dry materials within the range of d97 = 2 µm to d97 = 70 µm and are suitable for a large range of materials of any hardness low contamination milling grinding with cold gas (0°C- 20°C) hot gas up to 250°C inert gas Fluidized Bed Jet Mill Type CGS 71 with oil circulating lubrification for hot gas operation A wide range of machine sizes including lab-scale machines for research or small production amounts as well as larger production scale machines allow the milling of product quantities from...

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Operating Principle The product to be milled is fed through a double ﬂap valve, into the ﬂanged inlet (1) above the milling nozzles. A bed of material with increasing velocity is formed in the base of the milling chamber (2) which is ﬂuidized by the gas stream from the milling nozzles (3). Particles from the ﬂuid bed are drawn into the gas stream and accelerated with increasing velocity towards the centre of the chamber. Milling occurs by particle to particle impact along the gas stream and at the centre of the chamber. The milling gas, laden with particles, rises centrally to the classiﬁer...

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Characteristics Patented classifier design Production of even ﬁner materials than in the past is now possible with the new CONVOR® classiﬁer design. Constant radial velocity inside the classiﬁer wheel, a co-rotating (exchangeable) immersion tube as well as a sturdy mechanical assembly make it possible to achieve the highest degree of ﬁneness with maximum throughputs and this with only one classiﬁer wheel. The classiﬁer wheel is ﬁtted with a vertical shaft. The resulting symmetrical assembly of the classiﬁer wheel and the mill housing guarantees optimum ﬂow. Coarse particles are directed...

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Weighing System The ﬂuidized bed level in the milling chamber controls the product feed. The weight of the bed is constantly monitored by the weighing system, which comprises one load cell and two ﬁxed bearings. The data is analyzed and transmitted to the feeding system to ensure that the ﬂuidized bed depth is maintained at its optimum level. Load cell, mounted on CGS grinding air fixed bearing load cell fixed bearing No contamination of the material The nozzles only supply the milling gas. The product is accelerated in a free gas jet. Size reduction is carried out through the impact of...

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Efficient and ﬂexible Alternatives The design and machine size depends on the nature of the product and its particle size requirements. The mill is available in seven production sizes plus two for laboratory use, in addition special designs for machines can be chosen for a wide range of applications. The solid construction of the bearing housing and the optimized geometry of the locking gas sealing on the side of the classifying chamber guarantee a long life and excellent, quiet mechanical running. Two types of bearings are available: The grinding gas nozzles can be delivered in various...

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Materials of construction The choice of material depends on the product to be milled. Carbon steel as well as acid- and corrosion resistant stainless steels are standard. In addition, wear protection designs are available for milling of very hard abrasive material, which guarantee a contamination-free product. For example, grinding chamber and fines outlet are lined with ceramic or Vulkollan. The classifier wheel is available in ceramic or hard metal design for the highest operational demands. The advantages of the hard metal classifier wheel, compared to other wear protected classifier...

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Machines and plant design The Fluidized Bed Jet Mill can be designed in various executions depending on product and requirements. The Fluidized Bed Jet Mill type CGS and its corresponding equipment can be manufactured in PSR 10 bar (g), suitable for products with dust explosion hazards and also gas tight, suitable for inert gas operation. ATEX conformity EG-TYPE INSPECTION DOCUMENT acc. to directive 94/9/EG, annex III Grinding Plant with Fluidized Bed Jet Mill CGS 150 Double flap valve

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Example: Pharmaceuticals The pharmaceutical industry requires products such as active ingredients and excipients as well as ﬁnished active ingredient formulations to be of a precisely deﬁned high ﬁneness, justifying the use of a ﬂuidized bed jet mill. The same applies partly to the food industry. In this industry, the extremely high quality required of the ﬁnal product also applies to the machines and plants used in the production process which must in turn ensure the reproducibility and consistent high quality of ﬁnal products. The Fluidized Bed Jet Mill is optionally available in a Pharma...

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Examples of products Active coal Ceramic catalyser Ceramic pigments Ceramic pigments Cobalt metal Cobalt oxide Dental ceramics Glass flakes Glass frits Graphite (natural) Graphite (syn.) Hard materials Hard materials Hard materials Iron oxide Lithium cobalt oxide Manganese oxide, activated Mica Molybdenum Molybdenum disulphite Neodymium ferroboron Organic pigments Oxalates Pesticide Petrol coke, calcined Pharmaceutical products Powder coating Ruthenium Shell lime Silica gel Silica Silicates, inorganic Talc Tungsten carbide Toner (one comp.) Toner (two comp.) Toner (micro) Toner (colour) Wax...

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Technical data Number of milling nozzles pcs. 333333444 Nozzle diameter mm 2.1 2.6 5.0 8.5 12.0 17.0 18.0 22.4 25.6 Classifier wheel power max. kW 0.55 1.5 2.2 7.5 15 30 45 75 90 Test our Fluidized Bed Jet Mill CGS! We can run trials in our laboratory on different machine sizes with your material! Air flow based on pressure of 8 bar (abs.) and 20°C based on limestone (density 2.7 kg/l)

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NETZSCH-Feinmahltechnik GmbH Selb, Germany NETZSCH Lohnmahltechnik GmbH Bobingen, Germany NETZSCH Premier Technologies, LLC. Exton PA, USA NETZSCH Industria e Comercio de Equipamentos de Moagem Ltda. Pomerode, Brazil NETZSCH Technologies India Private Ltd. Chennai, India NETZSCH Trockenmahltechnik GmbH Hanau, Germany NETZSCH Espana, S.A.U. Terrassa/Barcelona, Spain NETZSCH Mastermix Ltd. Lichfield, Great Britain NETZSCH (Shanghai) Machinery and Instruments Co., Ltd. Shanghai, China NETZSCH FRERES S.A.R.L. Arpajon, France NETZSCH Vakumix GmbH Weyhe-Dreye, Germany AO NETZSCH Tula Tula,...

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NETZSCH Fluidized Bed Jet Mill CGS 12Pages

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NETZSCH Fluidized Bed Jet Mill CGS
12Pages