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1. WO2020097143 - A PRIMARY CLASSIFIER FOR A BOWL MILL

Publication Number WO/2020/097143
Publication Date 14.05.2020
International Application No. PCT/US2019/059962
International Filing Date 06.11.2019
IPC
B02C 23/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
23Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in groups B02C1/-B02C21/ or not specially adapted to apparatus covered by one only of groups B02C1/-B02C21/303
08Separating or sorting of material, associated with crushing or disintegrating
10with separator arranged in discharge path of crushing or disintegrating zone
12with return of oversize material to crushing or disintegrating zone
B07B 4/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
4Separating solids from solids by subjecting their mixture to gas currents
02while the mixtures fall
B02C 15/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
02CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
CCRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
15Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
12Mills with at least two discs and interposed balls or rollers mounted like ball or roller bearings
Applicants
  • GENERAL ELECTRIC COMPANY [US]/[US]
Inventors
  • RAMCHANDRA RAO, I.S.S. Lingamurthy
  • ADITYA, Krishnendu
  • PATIL, Sarang Vasanth Rao
Agents
  • VANDERLEEDEN, Kevin H.
  • QUINN, Thomas F., Jr.
Priority Data
20184104204407.11.2018IN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A PRIMARY CLASSIFIER FOR A BOWL MILL
(FR) CLASSIFICATEUR PRIMAIRE POUR BROYEUR À BOL
Abstract
(EN)
A primary classifier (100) for a rotatable grinding surface of a bowl mill (10) for grinding material is disclosed. The primary classifier (100) includes a vane wheel portion (200) having a plurality of vanes (210) coupled around a circumference of the rotatable grinding surface. The primary classifier (100) includes a stationary deflector (300) portion disposed around the vane wheel portion (200). The stationary deflector portion (300) includes first and second liners (310, 320). The first liners (310) are angled downwardly to shed a pulverized material. The second liners (320) are positioned below the first liners (310) and angled downwardly to direct airflow flowing via the vane wheel portion (200) in an inwardly direction back over the grinding surface. A vertical clearance gap (400) is provided between lower edges (320a) of the plurality of second liners (320) and outer ring (200a) of the vane wheel portion (200).
(FR)
Classificateur primaire (100) pour une surface de broyage rotative d'un broyeur à bol (10) destiné à broyer un matériau. Le classificateur primaire (100) comprend une partie roue à aubes (200) possédant une pluralité d'aubes (210) accouplées autour d'une circonférence de la surface de broyage rotative. Le classificateur primaire (100) comprend une partie déflecteur fixe (300) disposée autour de la partie roue à aubes (200). La partie déflecteur fixe (300) comprend des premier et second revêtements (310, 320). Les premiers revêtements (310) sont inclinés vers le bas pour couper un matériau pulvérisé. Les seconds revêtements (320) sont positionnés sous les premiers revêtements (310) et inclinés vers le bas pour diriger un flux d'air s'écoulant par l'intermédiaire de la partie roue à aubes (200) dans une direction vers l'intérieur de retour sur la surface de broyage. Un espace de dégagement vertical (400) est disposé entre des bords inférieurs (320a) de la pluralité de seconds revêtements (320) et un anneau extérieur (200a) de la partie roue à aubes (200).
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