Abstract:
A process for separating coal particles from ROM coal containing coal particles and refuse particles, by treating particulate ROM coal with a detectable marking agent in a manner to attach the marking agent preferentially to only one class of particles in the R0M coal, and by thereafter separating particles carrying the marking agent from the treated particulate ROM coal. In a preferred embodiment, a method is disclosed for the separation of coal from run of mine (ROM) coal containing particles of coal and refuse, which comprises conditioning the ROM coal with a coating agent capable of selectively coating the particulate coal to the substantial exclusion of coating the refuse, which coating agent is at least one alcohol containing from about 6 to about 22 carbon atoms. Combined with said coating agent is a fluorescent dye in a quantity to make the coated particles of coal fluoresce upon excitation to a degree sufficient to distinguish the coated coal particles from the substantially non-coated refuse. Exciting (as with ultraviolet light) the fluorescent dye coupled to the coal particles induces fluorescence and enables separating the fluorescing, coated coal particles from substantially non-fluorescing, non-coating refuse particles.
Abstract:
Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur hydrodynamischen Schwerstoffabtrennung aus einer Suspension, aufweisend einen die Suspension aufnehmenden Hydrozyklon (1), ein sich an den Hydrozyklon anschließendes Klassierrohr (2) und eine die abgetrennten Schwerstoffe aufnehmende Speicherkammer (3), wobei ein jeweiliger Spülwasserstrom zum Klassierrohr (2) und zur Speicherkammer (3) vorgesehen ist, die mittels eines jeweilig am Zulauf zum Klassierrohr bzw. zur Speicherkammer vorgesehenen Stellglied regelbar bzw. steuerbar sind.
Abstract:
An apparatus includes a screen capable of separating solids from a slurry having a liquid portion and a solid portion, and a first probe disposed beneath the screen to determine a position of a beach between a feed end and a discharge end of the screen, the beach being a transition where a substantial majority of the liquid portion of the slurry terminates. A method includes providing a slurry to a vibratory separator, measuring a property of a portion of the slurry adjacent to a reference probe, measuring a property of a composition adjacent to a first probe within the vibratory separator, and comparing measurements from the reference probe and the first probe to determine a position of the slurry.
Abstract:
The interrelated group of inventions relates to methods and devices for raw material lump separation and can be used for dressing ferrous and non-ferrous metal ores, mining chemical feedstock, secondary raw material and technogenic waste. The essence of the inventive method and device lies in that a useful component containing lump and a barren rock is irradiated by an ultrahigh frequency electromagnetic field (UHF). Said radiation frequency is selected in such a way that the electromagnetic wave penetration depth dependent of lump material properties is greater than the lump maximum linear dimension at the peak attenuation of the electromagnetic wave. UHF electromagnetic radiation energy absorbed by the lump material initiates the heating of the components thereof, wherein the component exhibiting a greater electrical conductivity absorbs the greater amount of UHF energy than the component exhibiting a lower electric conductivity during the same time, whereby the heating temperatures of the useful component and the barren stock measured after irradiation are different. The temperature law depends on the mass ratio of the lump components exhibiting different properties and is recorded by a thermographic system. Said invention makes it possible, under the same conditions, to increase the useful component content from 6-10 % to 18-25 %, the increment of the useful component mass ratio by 4.5 %, to reduce the useful component tailing up to 3 % and the energy consumption by 5 % by decreasing the raw material dilution during the processing thereof.
Abstract:
A method for the separation of calcium-containing limestone ore containing particles of calcite (CaCO3), dolomite (CaMg(CO3)2), and gangue, including magnesite (MgCO3) and siliceous materials. The method comprises conditioning the limestone ore with at least one coupling agent selected from saturated and unsaturated carboxylic acids containing from about4 to about 22 carbon atoms, or at least one coupling agent selected from the group consisting of aliphatic amines containing from about 8 to about 22 carbon atoms, and beta amines containing from about 7 to about 21 carbon atoms, to selectively coat the calcium-containing limestone or the gangue in the ore to the substantial exclusion of the other in combination with providing at least one fluorescent dye to said coupling agent; radiating the conditioned ore to excite and induce fluorescence of the fluorescent dye to a degree sufficient to distinguish the coated particles from the non-coated particles and separating the fluorescing, coated particles from the non-fluorescing, non-coated particles.