Method and device for determining the mass density of a volume flow of a suspension in a plant for ores or minerals

摘要

A method for determining the mass density of a volume flow of a suspension in a plant for ores, minerals, coal, gypsum, sand or the like, in particular for determining the mass density of at least a hydrocyclone (38) which is fed to the ore slurry - volume of material in a erzzermahlungs - and a hydrocyclone - screening plant, with an electric motor driven pump (16) for conveying of the volume flow, in which the pump the suspension by a predetermined height, and with a motor control means (14) for the regulation of the rotational speed of the pump drive motor and with a with the engine control device and a plurality of further system components in combination with a control computer (11), the measured values of the current power consumption (13) of the pump drive motor are supplied and of the mass density of the volume flow at least as a function of the in the case of a predetermined rotational speed of the pump drive motor measured drive power is determined, characterized in that the mass density of the volume flow through division of the measured pump drive power (13) by means of a pumping power coefficient is determined, and that of the pumping power coefficient by means of a functional relationship at least as a function of the predetermined rotational speed of the pump and the of..