METHOD AND DEVICE FOR MEASUREMENT OF FLOW RATE OF SOLID IN SLURRY OF GRAVITATIONAL CONCENTRATE OF CONCENTRATION TABLE Russian patent published in 2018 - IPC G01F1/78 G01N21/47 

FIELD: measuring equipment.

SUBSTANCE: present invention relates to measuring technology primarily in the field of mineral processing. Invention is directed to measuring the flow rate of a solid in the pulp of a gravity concentrate. Method of measuring the flow rate of a solid in the slurry of the gravity concentrate involves measuring the total width of all pulp jets of the gravity concentrate on the surface of the discharge threshold of the concentration table deck, calculation of the average value of this value for a fixed period of time, assigning the calculated value to the width of the threshold of the concentration table and, based on the result obtained, an estimate of the flow rate of a solid in the pulp of a gravitational concentrate by formula , where Q_c – consumption of solid in the pulp of gravity concentrate, g/min, K – coefficient of proportionality, taking into account the type of concentrate used, the slope of the deck, other technical characteristics of the concentration table, L_d – controlled width of the drain threshold of the concentration table deck, t_k – a fixed interval of measurement time, b_i – the total width of all pulp jets in the measurement interval t_k. Device of measuring the flow rate of a solid in the slurry of a gravity concentrate on a concentration table contains a light emission generator, for example a laser, a beam splitter system, Forming a beam of light that scans with a given frequency, a photoreceiver of the reflected signal from the pulp streams on the drain threshold of the concentration table deck. Outputs of the photodetector are connected to the inputs of the electrical signal processing circuit, shaped by photodetector. Electrical circuit provides an electrical signal proportional to the width of all jets of the pulp flow of the gravitational concentrate at the time of measurement. Integration of the measured signal and calculation of the flow rate of the solid in the slurry of the gravitational concentrate is carried out by a computing device according to formula [1].

EFFECT: technical result is the creation of a simple and reliable method for continuous measurement of the flow rate of a solid in the pulp of gravity concentrate in the range from 50 to 600 g/min.

2 cl, 5 dwg, 1 tbl