Method and system for harvesting weighting agent fines

B - Operations – Transporting – 02 – C

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B02C 23/08 (2006.01) C09K 8/00 (2006.01)

Patent

CA 2595217

A method for harvesting weighting agent fines includes milling weighting agent into a plurality of pieces, classifying the pieces based on size to extract those particles having a particle size less than an acceptable maximum diameter, reclassifying the pieces based on size to extract those particles having a particle size less than an acceptable minimum diameter, collecting the particles having a particle size between the standard acceptable minimum and maximum diameters, and collecting the particles having a particle size less than the acceptable minimum diameter. A system for harvesting weighting agent fines includes a mill to reduce the weighting agent particle size, a first classifier to extract particles having a particle size less than the acceptable maximum diameter, a second classifier to extract particles having a particle size less than the acceptable minimum diameter, a fine particle collection area, and a coarse particle collection area.

La présente invention concerne un procédé de récolte de particules de produit alourdissant qui consiste à broyer des produits alourdissant en une pluralité de morceaux, à classifier ces morceaux en fonction de la taille de façon à extraire les particules dont la taille est inférieure à un diamètre maximum acceptable, à classifier ces morceaux à partir d'une taille de façon à extraire les particules dont la taille est inférieure à un diamètre minimum acceptable, à recueillir les particules dont la taille est comprise entre les diamètres minimum et maximum acceptables et, à recueillir les particules dont la taille est inférieure au diamètre minimum acceptable. Un système de récoltes des particules de produit alourdissant comprend un broyeur destiné à réduire la taille des particules de produit alourdissant, un premier dispositif de classification destinée à extraire les particules dont la taille est inférieure au diamètre maximum acceptable, a second dispositif de classification destinée à extraire des particules dont la taille est inférieure au diamètre minimum acceptable, une zone de recueil de particules fines et une zone de recueil de particules grossières.

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