Measurement of in-situ petroleum reservoir wettability at the current salinity and at different salinities and water compositions. That data may be used to derive the crude oil acid and base equilibrium constants for the oil-surface adhesion reaction that control wettability. These constants may be used in quantitative models of the reservoir wettability. This procedure produces an accurate description of reservoir wettability and identifies the specific water chemistry that will optimize in-situ wettability and, in turn, oil production.

Flotation separation apparatus and methods are described herein, comprising a vessel having a plurality of flow guides oriented vertically in the vessel, a liquid inlet at a lower part of the vessel, a gas inlet at the lower part of the vessel, a first liquid outlet at an upper part of the vessel, a second liquid outlet at the lower part of the vessel, and a gas outlet at the upper part of the vessel.

The present invention relates to the field of measurement devices, specifically to devices for measuring pressure and flow as well as derived quantities, and in particular provides a sensor device for in-line measurement of superficial gas velocity, froth depth, apparent density and holdup in flotation cells, which comprises: a first tube; a second tube; a first valve connected to said first tube; a second valve connected to said second tube; a first pressure meter connected to said first tube; a second pressure meter connected to said second tube; a first mass flow meter connected to said first valve; and a second mass flow meter connected to said second valve. The present invention also provides a system for in-line measurement of superficial gas velocity in flotation cells.

In a flotation recovery circuit which includes the steps of: a grinding stage wherein a predetermined quantity of ore is ground to a predetermined size while irrigating the ore with water including recovered process water thereby to form a ground ore portion; conveying the ground ore portion mixed with the recovered process water to a flotation recovery stage; applying flotation recovery to the ground ore portion thereby to extract a recovered metal portion from a mix of the recovered process water and the ground ore portion; returning at least a portion of the recovered process water to the grinding stage; a method of increasing recovery of the metal portion from the predetermined quantity of ore; said method comprising applying a magnetic field to the ground ore portion in a magnetic conditioning stage while it is contained in the recovered process water subsequent to the grinding stage.

A family of amine mining collectors that uses alkoxylates allows for the easy adjustment of solubility and molecular weight useful because anionic and cationic mineral collectors require such varying degrees of solubility and molecular weight. The family of the present invention allows for the optimization of both parameters and an increase in collector efficiency.

A family of amine mining collectors that uses alkoxylates allows for the easy adjustment of solubility and molecular weight useful because anionic and cationic mineral collectors require such varying degrees of solubility and molecular weight. The family of the present invention allows for the optimization of both parameters and an increase in collector efficiency.

The invention relates to a submersible system (1) for measuring the density and/or concentration of solids in a dispersion, which can be in the form of a liquid, a mixture of multiple liquids, a suspension of solids in liquid, or a combination of these forms, inside of a reactor (11) into which gas in the form of bubbles is introduced, the system comprising: an open, pass-through gas exclusion device (4) having a tubular body (5) with a variable cross-section through which the dispersion without gas bubbles enters, the device coupling to an inlet tube (6); a scaled chamber (8) that has a means for measuring density, when the dispersion circulates between an inlet (14) of the sealed chamber (8) and an outlet (15) of the sealed chamber (8). The outlet (15) of the sealed chamber (8) is coupled to an outlet tube (7) through which the dispersion returns to the reactor (11) in which same is being processed. The system also comprises a transmitter (9) connected to a sensor, which generates an output signal proportional to the density of the dispersion without gas bubbles by means of the sensor located inside the sealed chamber (8); and a processing unit (10) that generates an output signal (16) proportional to the concentration of solids in the gasless dispersion, as well as the pulp density. The invention further comprises a method for obtaining the concentration and density of the pulp.

Flotation separation apparatus and methods are described herein, comprising a vessel having a plurality of flow guides oriented vertically in the vessel, a liquid inlet at a lower part of the vessel, a gas inlet at the lower part of the vessel, a first liquid outlet at an upper part of the vessel, a second liquid outlet at the lower part of the vessel, and a gas outlet at the upper part of the vessel.

A copper/molybdenum separation system uses sea water in the roughing circuit and desalinated water in cleaning circuit. In both roughing circuit and cleaning circuit, hydrophobic engineered media are used to recover the mineral particles of interest. The cleaning circuit includes a molybdenum loading stage configured to contact the conditioned pulp with the engineered media in an agitated reaction chamber, and load the hydrophobic molybdenite on the engineered media.

A dissolved air floatation apparatus including an ultrafine bubble-containing liquid production device and a dissolved air floatation tank. The ultrafine bubble-containing liquid production device includes a gas-liquid mixing unit and a bubble-containing liquid separation device. The bubble-containing liquid separation device swirls a liquid containing ultrafine bubbles and larger bubbles in a storage tank to concentrate the liquid that contains the ultrafine bubbles and the liquid that contains the larger bubbles to a central part of the swirling flow followed by discharge. A pressurized ultrafine bubble-containing liquid is mixed in a raw liquid containing a subject to be cleansed and is poured into the dissolved air floatation tank to cause a suspended substance and a dissolved component in the raw liquid to be adsorbed on an interface of fine bubbles and be floated in the dissolved air floatation tank to be extracted.