Noranda Mines Limited

Other

Frank R Rosenblum

Frank Kitzinger

An apparatus for measuring the density of a liquid or of a suspension of solids in a liquid is disclosed. The apparatus comprises two pressure sensors adapted to be mounted in the liquid so that the two sensors are vertically at predetermined levels apart, a differential pressure transducer, and proper tubings including a differential pressure zeroing device interconnecting the pressure sensors to the differential pressure transducer, for providing an output proportional to the density of the liquid which is compensated for the differential pressure caused by the differential neight of said pressure sensors in the liquid. In a preferred embodiment of the invention, the differential pressure zeroing device is a pair of U-tubes filled with liquid and the tubings comprise gas filled tubings interconnecting one branch of each U-tube to respective pressure sensors and the other branch of each U-tube to the differential pressure transducer.

Liquid density meter

An apparatus for measuring the sedimentation characteristics of particulate solids in liquid is disclosed. The apparatus comprises two separate vertical housings adapted to be filled to the same level with a liquid less dense than the particulate solids to be measured, means for introducing a sample of particulate solids to be measured in one of the housings, two pressure sensors located at the same level, one in each housing, and a differential pressure transducer connected to such pressure sensors for sensing the differential pressure caused by the sample introduced into one of the housings. The differential pressure transducer provides an output indicative of the weight percent of sample remaining in suspension as a function of time and such output may be used to determine the weight fraction of the particulate solids passing any given mesh size, or for measuring the specific gravity of particulate material of known dry weight.

Apparatus for measuring the sedimentation characteristics of particulate

A device for measuring the density of a liquid or of a suspension of solids in a liquid comprises a holder of predetermined length, two pressure sensors mounted at one end of the holder and adapted to be submerged so that the two sensors are vertically at predetermined levels apart in the liquid, and a differential pressure transducer also mounted on the holder and coupled to the pressure sensors for providing an output voltage proportional to the pressure differential sensed by the pressure sensors.

Pulp density meter

The present invention relates to a coasting vehicle which is adapted to be steered. The vehicle includes a pair of parallel platforms adapted to rotate or tilt about parallel axes, the platforms being coupled together such that the planes of the platforms remain parallel to each other through said longitudinal axes throughout any pivoted position of the platform. Wheels are mounted outboard of the platform, fore and aft thereof, and are adapted to be steered by the pivoting movement of the platform.

Vehicle

A froth level monitor is disclosed. The froth level monitor comprises a plurality of electrically conductive electrodes spaced in the vertical direction and adapted to contact the top of the froth in sequence as the level of the froth rises, a constant current source connected to each electrode and capable of generating a constant current when its associated electrode is in contact with the froth, and a summing and time averaging current to voltage converter connected to the output of all the constant current sources for summing up all the currents as an indication of the number of electrodes in contact with the froth and for averaging with respect to time the variations in froth level so as to provide an indication of the mean level of the froth.

Froth level monitor

A novel device is disclosed for taking samples of slurries of ground ore or minerals in water, or any suspension of particulate materials in liquid with no restriction on the particulate material content of the sample. The device comprises a container provided with movable end closures, such container being attached to a holder of suitable length to enable it to be immersed to the required depth into a body of slurry or liquid. Means are associated with the holder for tightly closing the end closures and for opening at least one of such end closures. The device may further be provided with an apparatus for measuring in situ desired chemical or physical properties of such sample.

Growing community of inventors

Ville St. Laurent, Canada

Frank R Rosenblum