us8178036b2 - impeller for dispersing gas into molten

Mixing (process engineering)

2018/8/4When a tank and impeller are used, the objective is typically to ensure that the gas bubbles remain in contact with the liquid for as long as possible. This is especially important if the gas is expensive, such as pure oxygen, or diffuses slowly into the liquid.

Detailed Study and Analysis of Bonding and Interface Formation in

impeller geometry and position, in dispersing of reinforcement. Hence the process needs to be simulated in order to optimize the parameters that influence the process. There are four latest methods to stir the molten composite bath as: 1. Mechanical Stirring by4.

Effect of Distribution and Mechanical Properties of

Composite gas with well dispersed particles was supplied into the molten metal of aluminum alloy by mechanical stirring impeller. Aluminum composite reinforced with nonmetallic particles were evaluated with mechanical properties and micro structures.

David Neff Inventions, Patents and Patent Applications

2020/9/22Impeller for dispersing gas into molten metal Patent number: 8178036 Abstract: An impeller for dispersing gas into molten metal includes a rectangular prism body having upper and lower faces and four side walls. The body has an opening extending through the

Vacuum Degassing, Mixing, Molding, and Micro

Vacuum Degassing, Mixing, Molding, and Micro-Bead Dispensing 1.0 Introduction 2.0 Simple Vacuum Degassing 3.0 Vacuum Degassing 3.1 Effect of Pressure on Boiling Point 3.2 Vacuum Mixing Degassing 3.2.1 Mixer Choice 3.2.2 Impeller/Propeller Choice 3.2.3 Mixing Container Choice 3.3 Vacuum Mold Filling 3.4 Vacuum Micro-Bead (Micro-Balloon) Dispensing 4.0 Curing 5.0 Conclusion

Patents Assigned to Pyrotek

2013/7/31Abstract: An impeller for dispersing gas into molten metal includes a rectangular prism body having upper and lower faces and four side walls. The body has an opening extending through the upper and lower faces and defines a hub around the opening on the upper face.

Dispersing gas into molten metal.

1990/2/5Gas is dispersed into molten metal by immersing a shaft-supported impeller (20, 40) into the molten metal and by pumping gas through the shaft (40) and out of the impeller (20). The impeller (20) is i 1. Apparatus for dispersing gas into molten metal, comprising: an

Microencapsulation of bioactive bilberry anthocyanins by means

freeze-dried anthocyanin extract by dispersing it in molten mixtures of beeswax and stearic acid with additional congealing and grinding the solidified fat into particles. Besides this study, two polysaccharide-based microencapsulation systems exist. In these

The gas fluxing of aluminum: Mathematical modeling and

The gas is injected into the fluxing vessel through a rotating shaft and impeller which simultaneously agitates the melt, while breaking up and dispersing gas bubbles through the liquid phase. The efficiency of impurity removal and control of toxic chlorine and chloride emissions are dependent upon the extent of gas dispersion or mixing, residence time of the bubbles, and surface area of the

KAGAKU KOGAKU RONBUNSHU

A correlation of a new type for the power requirement of an impeller dispersing gas into low-viscosity liquids was presented. The power requirement was correlated with aeration power normalized by the value at the critical point which divided the flooding state from the loading state.

Melting metal particles and dispersing gas with vaned

1992/3/25As has been indicated in the Dispersing Gas Patent, the apparatus 10 can be used to inject gas into the molten metal 42. As used herein, the term gas will be understood to means any gas or combination of gases, including argon, nitrogen, chlorine, freon and the like, that have a purifying effect upon molten metals with which they are mixed.

8. Processing and Deformation Characteristics of Metals

initial melting of metal/alloy ingots in a furnace in a protective gas atmosphere, mixing nanoparticles with molten metal using an impeller followed by solidifica-tion. In this process, both the incorporation of nanoparticles into the melt and pour-ing of the composite

(PDF) Studies on Aluminum–Fly

The vortex technique involves the introduction of pretreated ceramic particles into the vortex of molten alloy created by the rotating impeller. Lloyd (1999) has reports that vortex-mixing technique for the preparation of ceramic particle dispersed aluminum matrix composites was originally developed by Surappa Rohatgi (1981) [19] at the Indian Institute of Science, Bangalore.

Impeller for dispersing gas into molten metal

An impeller for dispersing gas into molten metal includes a rectangular prism body having upper and lower faces and four side walls. The body has an opening extending through the upper and lower faces and defines a hub around the opening on the upper face. The

Bruno Thut Inventions, Patents and Patent Applications

2015/12/15A gas dispersement pump for molten metal includes a base including an impeller chamber, an inlet and an outlet. An impeller is mounted to a shaft and adapted to be rotated in the impeller chamber. A gas passageway extends from a gas source to a gas outlet in proximity to the impeller chamber.

Influence of Solidification Microstructure and Distribution of

about 300ppm was added into the molten metal for modification of eutectic Si, and this mixture was then stabilized at 935K for 600s. Molten alloy with SiC particles were cast into a cylindrical permanent mold and solidified again. Test piece was machined to a

Transport phenomena, reactor design and scale

1985/1/1Gas into a molten salt system of the lithium chloride-potassium chloride in molten sodium nitrate was studied by Sada (53). 232 J.l . OLUSIIUI. FIXED FILM REACTORS Processes can be carried out with the reactants incorporated into surface films of particles.

Detailed Study and Analysis of Bonding and Interface Formation in

impeller geometry and position, in dispersing of reinforcement. Hence the process needs to be simulated in order to optimize the parameters that influence the process. There are four latest methods to stir the molten composite bath as: 1. Mechanical Stirring by4.

Particle distribution in cast metal matrix composites—Part

2002/4/30As well as dispersing the solid particles uniformly, the stirring action must not be allowed to introduce gasses into the melt, which would be detrimental to the final product. A vortex created during stirring can suck in even non-wetting particles and also bubbles into a molten alloy.

Industrial Inline Mixers

IKA represents the development of continuous mixing processes. Advantages of IKA inline machines include improved product quality and better stability in fewer passes, at a lower cost to you. Inline Mixers IKA Machines and plants: Colloid Mill MK Cone Mill MKO

Metal matrix composites: production by the stir casting

1999/8/30When reinforcement materials are incorporated into a melt in air, the molten compound must be treated to remove the dissolved gas. Although various outgassing treatments are available (based on nitrogen gas, chlorine and/or vacuum treatment), it is difficult to reach a very low hydrogen content corresponding to the saturation of solid aluminium alloys.

Chemical Engineering Technology: Vol 27, No 3

2004/2/26Molten aluminium is traditionally "cleaned" by a chlorine‐based fluxing gas. This gas also has to provide the motive power for mixing. Recently, mechanical agitation with solid fluxes has been considered as a replacement for environmental reasons.

Detailed Study and Analysis of Bonding and Interface Formation in

impeller geometry and position, in dispersing of reinforcement. Hence the process needs to be simulated in order to optimize the parameters that influence the process. There are four latest methods to stir the molten composite bath as: 1. Mechanical Stirring by4.

Graphite rotor, impeller shaft – Sialon Ceramics

Introducing the new Sialon alternative for graphite rotor impeller shaft to be used for degassing in molten auminium. Graphite rotors, impellers and shafts are widely used for dispersing hydrogen of Aluminium. During aluminum and aluminum alloy smelting, hydrogen produced by chemical action with steam diffuse in molten aluminum, which will cause inner structural defect to aluminum products.

Vacu

Incorporating powders directly into a liquid stream, will speed up your process, improve your product quality, while at the same time improving operator safety. The Scott Turbon Vacu-Blend generates strong vacuum rates, pulling in powders and dispersing them lump-free into the liquid stream.

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