Método para tomar muestras de pulpa a partir de un flujo de proceso por gravedad continuo de tipo en canal abierto sin presion llevandose a cabo el muestreo en dos fases, un flujo de muestra primario y un flujo de muestra secundario estan dispuestos como flujos de tipo en canal abierto sin presion, de tal modo que el caudal del flujo de muestra secundario que es guiado para el analisis es aproximadamente proporcional a un caudal instantaneo del flujo de proceso; y aparato para tomar muestras.

摘要

A method and an apparatus for taking slurry samples from a continuous gravity process flow (PF). The sampling is carried out in two stages by first and second sampling units (1, 2). The primary sample flow (PSF) and the secondary sample flow (SSF) are arranged as pressureless open-channel type flows, so that the flow rate of the secondary sample flow (SSF) to be led for analysis is approximately proportional to an instantaneous flow rate of the process flow (PF). In the apparatus, the first sampling unit (1) and the second sampling unit (2) comprise venting means (23, 24) adjacent the upper ends (25, 26) of their respective first and second side walls (7, 8; 13; 14) to allow equalising of the atmospheric pressure prevailing inside and outside the first and second sampling units above free liquid levels (27, 28) of the primary and secondary slurry flows (PSF, SSF) along the entire lengths of the sampling units to form pressure-less open-channel type flow paths for the primary and secondary sample flows (PSF, SSF).