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Showing 1 to 20 of 40 for “"Feed rates"”.
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Abrasive Blasting Process Optimization: Enhancing Productivity, and Reducing Consumption and Solid/Hazardous Wastes
… at establishing relationships between applied feed rates and resulting productivity and consumption rates. It is clear that the high costs of disposal of the multimedia wastes generated by the dry abrasive blasting processes are of increasing concern in the future of shipbuilding industry. In …
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Effect of operating variables on composition of overhead vapors and residue from a continuous flash distillation for the system methanol-water at atmospheric and sub-atmospheric pressures
… of temperature, agitation, and rate of feed at a total pressure of 500 millimeters of mercury, absolute. The distillation took place in a nine inch diameter, electrically-heated, controlled temperature and pressure, cylindrical still 14 inches high. The liquid phase was agitated by the …
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A Torque Based Power Input Model for Friction Stir Welding
… decreasing the spindle speed or increasing the feed rate significantly decreases the heat input at low feed rates. At high feed rates, feed rate and spindle speed have little effect on the heat input. Process parameter versus heat input trends are verified by measurements of the weld heat …
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Digital Tracking Control for Machine Tool Feed Drives
The use of linear motor direct drives as feed drives enables higher feed rates and accelerations, eliminates problems with backlash, and reduces power waste due to friction. Servo controller design of those feed drives becomes more challenging due to dynamic interaction between the servo control …
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Three-body abrasive wear of materials
… of normal load, abrasive particle size, abrasive feed rate and the type of abrasive on three body wear resistance has also been examined. It has been shown that there is little increase in wear with an increase in particle size in the size range from 50µm to 180µm and that above an abrasive …
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Preparative Scale Separation of Organic Mixtures by Semi-Continuous Gas-Liquid Chromatography
… separation difficulty and volatility. The feed mixtures selected had separation factors in the range of 1.1-5.8 and required equipment operation in the range of 55-200°C, while using F.F.A.P. (free fatty acid phase) on Chromosorb W or OV-275 (a cyanosilicone) on Chromosorb P, as …
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Water chemistry characterization and component performance of a recirculating aquaculture system producing hybrid striped bass
… levels increased over time with increasing feed rates but never reached levels toxic to the fish population. CBODS,COD, DOC, TSS and VSS increased over time increasing as a function of increasing feed rates. No correlation was observed between fish mortality or fish growth rates for the …
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Distillation of a Binary Mixture in the Centrifugal Molecular Still
… data of the binary mixture.<br/><br/>Mean rates of distillation and compositions of distillate of the binary mixture (di-2-ethylhexyl phthalate - di-2-ethylhexyl sebacate) were measured for a set of feed compositions over a range of temperatures and feed rates. The overall performance of …
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Machinability Study on Silicon Carbide Particle-Reinforced Aluminum Alloy Composite with CVD Diamond Coated Tools
… It was found that low tool rotation speeds, feed rates and depths of cut are necessary to achieve smoother surface finishes of R a < 1 μm. A high MRR to low tool wear and surface roughness ratio was obtainable at a tool rotation speed of 6500 r/min, feed rate of 762 mm/min and depth of cut of …
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Two Dimensional Friction Stir Welding Model with Experimental Validation
… been evaluated over a variety of tool RPMs and feed rates. Initial results suggested that further optimization of the material parameters and an additional ability to model the thermal recovery of the material would improve the overall performance of the model. Therefore, an experimental/numeric …
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A Scrolling Geotextile Fabric Filter Device for Primary Clarification
… (TSS) filtering performance and fabric usage rates. Spunbonded products absorbed less moisture, reducing loaded fabric weight. Fabric thickness did not affect filtration efficiencies for either type of geotextile. Process variables affecting unit performance were investigated. Flow rate, head …
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Reference Electrode Development in Polymer Electrolyte Membrane (PEM) Electrolyzer Assembly for Novel Investigation of Electrodes
… current density, low temperature, and low water feed rates. Application of the RE was successfully demonstrated through investigation of the oxygen evolution and hydrogen evolution reaction mechanisms occurring at the anode and cathode, respectively. Tafel slopes were calculated and the rate …
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The Production of Activated Carbon from North Dakota Lignite
… variables investigated were feed rates, particle size, temperature, and steam flow rate to determine optimum conditions for the activation process. No optimums were found for the temperature and particle size variables due to the effect of a changing residence time in each …
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Development of a melting and directional solidification process for improving the grain structure and electronic properties of a silicon wafer
… fine-grained silicon wafers at accelerated feed rates for improved electronic properties. The proposed process encapsulates a fine grained silicon wafer which is then sandwiched between two substrates with a specialized release layer. This stack is then zonemelted and recrystallized in a …
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Optimization of sweet sorghum processing parameters
… the greatest proportion of nonstructural carbohydrates, the presumed fermentable material. Sugar cane milling procedures have previously been used to extract the juices from the sweet sorghum plant material. The research reported herein relates to a new method of juice extraction expected to …
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Gas- and solid-mixing behavior in a vibrated-bed microreactor with rapid switching of catalyst between gas atmospheres
… is being developed to study carbon deposition rates for continuous Fischer-Tropsch synthesis from a low H₂:CO gas with rapid switching of catalyst between gas atmospheres. The cold-flow microreactor consisted of three chambers with vertical sliding baffles that shift catalyst between the …
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In-Plant Testing of the Hydrofloat Separator for Coarse Phospahte Recovery
… methods. In this novel process, classified feed is suspended in a fluidized-bed and then aerated. The reagentized phosphate particles become buoyant and report to the product launder after encountering and attaching to the rising air bubbles. Simultaneously, the hydrophilic particles are …
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Modeling and experimental investigations of drilling carbon fiber reinforced composites
… different composite materials, drill bits and feed rates. It was found that the proposed model offered the highest average accuracy among all studied cases. This model explains how the delamination area starts with a circular cross-sectional area in the entrance layer and grows into an …
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The development of a modular integrated recirculating aquaculture system using Porphyra (nori) for the bioremediation of marine finfish effluent
… fiberglass tanks.</p><p>Ammonium production rates were determined for Atlantic cod ( Gadus morhua L.) and nutrient uptake rates for Porphyra umbilicalis Kutzing and P. linearis Greville. The ammonium kinetic characteristics of the fish and seaweed were used to develop a model to predict the …
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Modeling and optimization of a two-stage regenerator fluid catalytic cracking unit
… permanent catalyst deactivation. Heavier feedstocks have led to increased usage of two-stage regeneration. A new FCC model has been developed for modeling a unit that has a two-stage regenerator. The model incorporates the ten lump kinetic model of Jacob et al. for the riser and a three …
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