Abstract: A separation apparatus and method for separating ore is provided. The separation apparatus (10) includes a separation chamber (12) and is configured to be utilised with a fluid pulsing mechanism (32) for operatively pulsating a fluid through ore deposited in the chamber resulting in the migration of generally lighter ore particles toward an upper region (25) of the chamber and for generally heavier particles to migrate toward a bottom region (14) of the chamber (12). The ore is deposited by means of a chute (38) in the bottom region (14) of the chamber (12) and the lighter ore particles may then be extracted from the chamber through a first chamber outlet (24) while the heavier particles may be extracted through a second chamber outlet (28).

Abstract: An aggregate material separating device includes a frame with a shaker mechanism. A trough is disposed on the frame and coupled to the shaker mechanism by a shaker spring. A hopper is disposed at an end of the trough and can receive a load of aggregate material. A hopper wash line is disposed adjacent the loading hopper to irrigate the aggregate material in the hopper forming a slurry. A brush and a backwash spigot form a standing wave in the trough to slow slurry movement from through the trough in order to provide additional settling time for the slurry. A mineral separation bed is disposed along a bottom and side of the trough. The mineral separation bed has a plurality of substantially longitudinal riffles that can be sized, shaped and oriented to capture minerals of a predetermined specific gravity from the slurry as the shaker shakes the trough.

Abstract: A method for decontaminating soil containing inorganic contaminants having a degree of liberation of at least 60%, comprising the steps of removing from a coarse fraction at least a portion of inorganic contaminants in particulate form contained therein with a jig to produce a treated coarse fraction, removing from an intermediate fraction at least a portion of inorganic contaminants in particulate form contained therein with a separator selected from the group consisting of a spiral and a classifier to produce a treated intermediate fraction, removing from a fine fraction at least a portion of inorganic contaminants in particulate form contained therein with a separator selected from the group consisting of a flotation cell and a multi-gravity separator to produce a treated fine fraction, whereby the combined treated coarse, intermediate and fine fractions are impoverished in inorganic contaminants.

Abstract: In jigging for purposes of gravity separation of material to be concentrated the material is sorted into a heavy fraction which is withdrawn through a screen (2) and a light fraction withdrawn above the screen (2), by periodically passing flows from the bottom to the top through the feed material. If the material is predominantly of finer character, there will be a ragging (3) on the screen (2) composed of particles which are larger and usually also specifically heavier than those of the feed material. In this manner, however, the separation of feed material will be unsatisfactory in the fine particle size range having upper particle size limits between 300 .mu.m and 1 mm, particularly so if the particle size ratio of the material is rather broad.

Abstract: The invention relates to a percussion jig in which the chutes for receiving and discharging the material to be separated are each divided into a plurality of individual chute segments arranged spaced from one another so that the spaces between adjacent individual chute segments facilitate a free equalization of the levels of the settling fluid during the upward and downward movements of the settling tank.

Abstract: An oxygen sensor having a bar-shaped heater inserted in an elongate bore formed in a tubular solid electrolyte body which has porous platinum electrodes on its inner and outer surfaces and which is supported by a housing such that its closed end portion is exposed to exhaust gas and such that the elongate bore is gas-tight with respect to the exhaust gas. The bar-shaped heater comprises a heating resistor having a positive temperature coefficient, and a ceramic boyd carrying the heating resistor so as to embed the latter.

Abstract: The invention relates to a percussion jig in which the carrier for material to be separated is freely suspended in the region of its centroidal axis on the piston rod of a hydraulic drive cylinder. This results in a particularly simple construction subject to little wear.

Abstract: A wet settling machine for processing mineral mixtures, particularly fine-grained coal and other minerals, has the separating liquid energized into a pulsating motion with a basic wave and an upper harmonic superimposed on the base wave. The harmonic wave may proceed longitudinally with respect to the base wave or transversely with respect to the base wave. The base wave is pneumatically generated and the harmonic wave is mechanically generated.

Abstract: A centrifugal jig receives a pulp material within a rotating cylindrical jig bed for the purpose of separating the pulp into a selected heavy fraction and a lightweight fraction. The jig bed is cylindrical. It is rotated to produce an outward centrifugal force on the pulp material that is substantially greater than the force of gravity. A liquid is pulsed inwardly to produce a fluidic bed within the rotating jig bed to permit settling and separation of the heavy fraction from the lightweight fraction. The heavy fraction is screened and passed radially outward to be collected outside the bed. The lightweight fraction or tailings are moved over a discharge edge of the jig bed and are collected at a station remote from the heavy fraction collection area.

Abstract: An apparatus for cleaning coal of extraneous matter such as gravel and the like includes a stratifying and classifying oscillating screen submerged in a liquid confining tank wherein stratification is produced by motion of the oscillating screen. The screen bottom slopes downwardly and water flow is induced from either end of the screen to aid in the stratification. The coal which rises to the top is removed by several skimmers powered by a vacuum controlled materials handling pump.