Abrégé

A sparge for use in a high-pressure vessel operated at elevated temperatures and having high energy agitators for suspending mineral containing particles in a slurry. The sparge injects reagent fluids into the slurry to reduce reaction times and for controlling process parameters for extracting valuable minerals from the particles. The sparge has a vapor lock to inhibit the flow of particulate material and detritus material under low or no fluid flow situations which occur commonly in the operation of high pressure autoclaves. The sparge has a fluid flow path that increases in cross-sectional area in the direction of flow of reagent fluids so as to keep reagent fluids flowing at a velocity below a critical impingement velocity that can cause metal materials of the sparge to either wear rapidly, combust and in the worst case lead to loss of containment and violent and rapid depressurization of the high pressure vessel.

Classes IPC  ?

• B01F 35/52 - Récipients à plusieurs compartiments
• B01F 35/71 - Mécanismes d'alimentation

Abrégé

A sparge (20, 40, 60 and 80) for use in a high-pressure vessel (26) operated at elevated temperatures and having high energy agitators (16) for suspending mineral containing particles in a slurry (36). The sparge (20, 40, 60 and 80) injects reagent fluids into the slurry (36) to reduce reaction times and for controlling process parameters for extracting valuable minerals from the particles. The sparge (20, 40, 60 and 80) has a vapour lock (constituted by components 24, 29, 30, 32, 44, 46, 64, 65, 66) to inhibit the flow of particulate material and detritus material under low or no fluid flow situations which occur commonly in the operation of high pressure autoclaves (26). The sparge (20, 40, 60 and 80) has a fluid flow path that increases in cross sectional area in the direction of flow of reagent fluids so as to keep reagent fluids flowing at a velocity below a critical impingement velocity that can cause metal materials of the sparge (20, 40, 60 and 80) to either wear rapidly or even to combust and in the worst case lead to loss of containment and violent and rapid depressurisation of the high pressure vessel (26).

Classes IPC  ?

• B01F 3/04 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de gaz ou de vapeurs avec des liquides
• B01F 15/02 - Mécanismes d'alimentation ou d'évacuation
• B01J 8/20 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés les particules étant fluidisées l'agent fluidisant étant un liquide
• C22B 3/02 - Appareillage à cet effet

Abrégé

A sparge (20, 40, 60 and 80) for use in a high-pressure vessel (26) operated at elevated temperatures and having high energy agitators (16) for suspending mineral containing particles in a slurry (36). The sparge (20, 40, 60 and 80) injects reagent fluids into the slurry (36) to reduce reaction times and for controlling process parameters for extracting valuable minerals from the particles. The sparge (20, 40, 60 and 80) has a vapour lock (constituted by components 24, 29, 30, 32, 44, 46, 64, 65, 66) to inhibit the flow of particulate material and detritus material under low or no fluid flow situations which occur commonly in the operation of high pressure autoclaves (26). The sparge (20, 40, 60 and 80) has a fluid flow path that increases in cross sectional area in the direction of flow of reagent fluids so as to keep reagent fluids flowing at a velocity below a critical impingement velocity that can cause metal materials of the sparge (20, 40, 60 and 80) to either wear rapidly or even to combust and in the worst case lead to loss of containment and violent and rapid depressurisation of the high pressure vessel (26).

Classes IPC  ?

• B01F 33/71 - Mélangeurs spécialement adaptés pour travailler à une pression inférieure ou supérieure à la pression atmosphérique, p. ex. en combinaison avec un démoussant travaillant à une pression super-atmosphérique, p. ex. dans des récipients pressurisés
• B01F 23/53 - Mélange de liquides avec des solides en utilisant des agitateurs entraînés
• B01F 27/112 - Agitateurs caractérisés par la configuration des agitateurs avec des bras, des pales ou des lames
• B01F 35/71 - Mécanismes d'alimentation
• B01F 35/75 - Mécanismes d’évacuation
• B01J 3/04 - Récipients sous pression, p. ex. autoclaves
• B01J 8/20 - Procédés chimiques ou physiques en général, conduits en présence de fluides et de particules solidesAppareillage pour de tels procédés les particules étant fluidisées l'agent fluidisant étant un liquide
• C22B 3/02 - Appareillage à cet effet