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1. WO1996018454 - METHOD AND APPARATUS FOR SLURRYING PULVERIZED MATERIALS INTO A LIQUID

Publication Number WO/1996/018454
Publication Date 20.06.1996
International Application No. PCT/FI1995/000675
International Filing Date 11.12.1995
Chapter 2 Demand Filed 20.06.1996
IPC
B01F 3/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
3Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed
12liquids with solids
B01F 5/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers; Mixers for falling materials, e.g. solid particles
B01F 7/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
7Mixers with rotary stirring devices in fixed receptacles; Kneaders
CPC
B01F 2005/0008
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers
0002Direction of flow or arrangement of feed and discharge openings
0008Radial flow
B01F 3/1221
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
3Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed
12liquids with solids
1221using driven stirrers
B01F 3/1271
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
3Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed
12liquids with solids
1271Mixing systems, i.e. flow charts or diagrams
B01F 7/0075
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
7Mixers with rotary stirring devices in fixed receptacles ; , i.e. movement of the receptacle not being meant to effect the mixing
0075the mixer being composed of a stator-rotor system with movable slits between surfaces facing each other, e.g. having intermeshing teeth or cylinders or having orifices
Applicants
  • MEGATREX OY [FI]/[FI] (AllExceptUS)
  • VIRTANEN, Hannu [FI]/[FI] (UsOnly)
Inventors
  • VIRTANEN, Hannu
Agents
  • LAINE, Seppo
Priority Data
94594516.12.1994FI
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR SLURRYING PULVERIZED MATERIALS INTO A LIQUID
(FR) PROCEDE ET APPAREIL POUR LA PREPARATION DE PATES EPAISSES PAR INCORPORATION DE MATIERES PULVERISEES DANS UN LIQUIDE
Abstract
(EN)
The invention relates to a method and an apparatus for preparing slurries of high solids content and high viscosity from liquids and pulverized materials. When preparing such slurries, the mixing of dry solids into the slurry turns difficult as the solids content becomes higher. The invention is based on preparing the slurry in at least two steps through first preparing a slurry with a solids content lower than that of the final product and then mixing into this slurry more solids in at least one step until the desired solids content is attained. Mixing is performed in a pin-mill-type apparatus (1a, 1b) incorporating concentric rings equipped with impact stops which are rotated so that a tangential speed difference is attained between the impact stops.
(FR)
Cette invention se rapporte à un procédé et à un appareil servant à préparer des pâtes épaisses à forte teneur en particules solides et à viscosité élevée à partir de liquides et de matières pulvérisées. Lors de la préparation de ces pâtes, le mélange des particules solides sèches dans la pâte épaisse se révèle difficile dès que la teneur en particules solides augmente. Cette invention consiste à préparer la pâte épaisse en au moins deux étapes, en préparant d'abord une pâte épaisse ayant une teneur en particules solides inférieure à celle du produit final, puis en mélangeant dans cette pâte davantage de particules solides en au moins une phase, jusqu'à ce que la teneur en particules solides désirée soit atteinte. Cette opération de mélange s'effectue dans un broyeur à pointes (1a, 1b) comprenant des anneaux concentriques pourvus de butées d'impact, lesquelles sont mises en rotation pour qu'une différence de vitesse tangentielle soit atteinte entre ces butées d'impact.
Also published as
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