Author
D. Venkateswarlu
Bio: D. Venkateswarlu is an academic researcher from Indian Institute of Technology Madras. The author has contributed to research in topics: Mass flow & Grinding. The author has an hindex of 4, co-authored 5 publications receiving 57 citations.
Topics: Mass flow, Grinding, Ball mill, Flow measurement, Mass flow meter
Papers
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TL;DR: In this paper, the results of 239 experimental runs on grinding calcite of particle size range 0.15-1.70 mm in an experimental jet mill of 20 mm diameter, using feed rates of 5-150 g/min and air pressure of 3-6 kg/cm 2 G are reported.
30 citations
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TL;DR: In this paper, the internal pressure of perspex mass flow hoppers was studied using a radiopill receiving system. But the results were compared with the Jenike-Johanson theory, and the effects of stop/start operation and compaction of the fill material prior to the initiation of flow were also studied.
10 citations
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TL;DR: In this paper, the static and dynamic wall pressures measured by a small pressure sensitive radiopill, in axial-symmetrical and plane-strain experimental perspex mass flow hoppers, are reported.
8 citations
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TL;DR: In this article, an instrumentation set-up for the determination of particle velocities and flow patterns in mass flow hoppers is described, which includes a pressure sensitive radiopill as flow tracer, ferrite antenna system, transistorized tuned amplifier and potentiometric recorder.
8 citations
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TL;DR: In this article, the results of 300 experimental runs on vibration milling of soapstone, graphite, cXte, magnesite, rock phosphate, granite and zirX sand covering particle size range of (−0.25+0.10) to (−1.00+ 0.80) mm, density range of 2.29−4.59 g/cm3, hardness range of 1-7 Mho's hardness number and surface energy range of 4.50−38.66 kgf m/m2, are presented.
3 citations
Cited by
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TL;DR: In this paper, the authors present results on organic crystals' jet milling in terms of specific energy consumption with an adaptation of the correlation proposed by Sarma, showing that, within the operating energy range and above a critical energy value, the creation of specific surface area corresponds to an increase of fine particles production.
131 citations
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127 citations
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TL;DR: In this paper, a non-intrusive local averaging technique was developed to compute bulk stresses from the values of local interparticle contact stresses which allowed us to monitor the changes in the orientation of the major principal normal stress as well as the magnitude of the shear stress in different hopper sections.
97 citations
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TL;DR: In this paper, the equipment most commonly used in fine particles processing and related process parameters is described, including Tumbling ball, stirred, vibratory and fluid energy mill types, and a number of factors influence the choice of equipment, including the end-use of the product, required product size distribution, sensitivity of the material to heat and purity requirements.
Abstract: The growing demand for ultrafine powders, coupled with stringent quality requirements, calls for continuous improvements in all aspects of fine particles production. The high energy costs involved in comminution is also an additional motivator. The equipment most commonly used in fine particles processing and the related process parameters is described. Tumbling ball, stirred, vibratory and fluid energy mills are the most commonly used mill types. A number of factors influence the choice of equipment, including the end-use of the product, required product size distribution, sensitivity of the material to heat, and purity requirements. Stirred ball mills are used in ultrafine grinding because of their high unit outputs, while the low amplitude vibro-energy mills are used because of their low specific energy. Fluid energy mills are economic only in some specific applications as in treating heat sensitive materials, materials for plastics and ceramics where purity and delamination are the most important crit...
63 citations
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TL;DR: Grinding experiments performed with a modified spiral jet mill indicate the strong impact of the elastic-plastic properties of a given substance on its breaking behaviour and new insights into the size reduction process are given.
54 citations