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Full-Text Articles in Engineering
Wet Process For Fly Ash Beneficiation, Jiann-Yang Hwang
Wet Process For Fly Ash Beneficiation, Jiann-Yang Hwang
Michigan Tech Patents
A wet process for the beneficiation of a fly ash by-product has the following steps: a) forming a slurry mixture of a fly ash material and a liquid; b) gravitationally separating and collecting a first material fraction of the fly ash having a density less than the liquid by skimming off floating slurry material; c) separating a first magnetic fraction from the slurry by subjecting the slurry to a magnetic field of from about 300 gauss to about 10 kilogauss; d) separating the unburned carbon from the remaining slurry components by adding an effective amount of an oil having a …
Magnetic Solvent Extraction, Jiann-Yang Hwang
Magnetic Solvent Extraction, Jiann-Yang Hwang
Michigan Tech Patents
Particles of a magnetic material coated with a hydro- phobic surfactant are dispersed in an organic solvent extractant to produce a magnetic solvent extractant which can be used in solvent extraction processes. Phase separation of an organic phase, carrying the component to be separated, from the aqueous phase can be accelerated by applying a magnetic field to the organic phase. After removal of the organic phase, a magnetic field can be applied to the aqueous phase to remove any residual organic phase and thereby enhance the degree of separation.
Method Of Making High Strength Articles From Forged Powder Steel Alloys, Alfred A. Hendrickson, Darrell W. Smith
Method Of Making High Strength Articles From Forged Powder Steel Alloys, Alfred A. Hendrickson, Darrell W. Smith
Michigan Tech Patents
High strength steel parts or articles are made from a powder alloy by compacting the powder into a preform, sintering the preform in a sintering furnace or the like under a highly-reducing atmosphere and at a temperature of at least 1150° C., cooling the preform, preheating the sintered preform in a highly-reducing atmosphere, such as an inert gas-based atmosphere containing hydrogen or pure hydrogen, to a temperature of at least 1000° C. and transferring the preheated preform to an impact forging device and impacting the preform at a peak averaging forging pressure of at least about 1000 MPa to obtain …
Method For Compression Molding Articles From Lignocellulosic Materials, Robert D. Palardy, Bruce A. Haataja, Andrew D. Williams
Method For Compression Molding Articles From Lignocellulosic Materials, Robert D. Palardy, Bruce A. Haataja, Andrew D. Williams
Michigan Tech Patents
Flakeboard or particle board panels and other composite articles made from wood flakes or other particulate lignocellulosic materials having a relatively high internal bond and improved resistance to moisture are made from flakes or particles which have a moisture content of at least 15%. A catalyst capable of accelerating the reaction between the flakes or particles, the binder and water is applied to the flakes or particles prior to the addition of a moisture-tolerant particle board binder, such as an organic polyisocyanate. A mat of the resulting furnish is compression shaped under pressure and at a temperature less than 250° …
Process For The Extracting Oxygen And Iron From Iron Oxide-Containing Ores, Surendra K. Kawatra, Timothy C. Eisele
Process For The Extracting Oxygen And Iron From Iron Oxide-Containing Ores, Surendra K. Kawatra, Timothy C. Eisele
Michigan Tech Patents
Oxygen and metallic iron are produced from an iron oxide-containing mineral, such as ilmenite, by extracting iron from the mineral with hydrochloric acid, separating solid residue from the resulting solution and drying same, electrolyzing the separated, iron chloride- containing solution to produce electrolytic iron and chlorine gas, combining the chlorine gas with water recovered from the drying and/or iron chloride-containing solution electrolysis steps of regenerate hydrochloric acid and recycling the hydrochloric acid to the extraction step. In an alternate embodiment, the chlorine gas is reacted with recovered water in the presence of a catalyst to produce hydrochloric acid which is …
Method For Treating Wood Against Fungal Attack, Peter E. Laks
Method For Treating Wood Against Fungal Attack, Peter E. Laks
Michigan Tech Patents
Complexes of sulfited tannin extract and a copper(II) ion effectively protect wood against fungal attack. The complex can be impregnated into wood in a single step treatment using a water/organic solvent system, or formed in situ by treating the wood with an aqueous solution containing the extract and subsequently treating the wood with an aqueous solution containing a copper (II) salt.