Slurry processing apparatus, microbubble generation equipment, and slurry processing method

Patent metadata

Field	Value
Publication number	US-12465899-B2
Application number	US-202117796056-A
Country	US
Kind code	B2
Filing date	Feb 17, 2021
Priority date	Feb 21, 2020
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

Provided is a slurry treatment apparatus includes: a treatment tank for performing any treatment of a solid-liquid reaction, a solid-gas reaction, a gas-liquid reaction, and solid-liquid separation on a slurry containing a metal or a metal compound; a first pipe; a second pipe; and a pump, in which one end of the first pipe has a suction opening for sucking the slurry from the treatment tank, the other end of the first pipe is connected to a suction port of the pump, one end of the second pipe is linked to a discharge port of the pump, the other end of the second pipe is connected to a microbubble generator, and the microbubble generator includes a throttle that throttles a flow of the slurry and a gas supply tube for supplying gas to the throttle, and supplies microbubbles to the slurry in the treatment tank.

First claim

The invention claimed is:

1 . A slurry treatment apparatus comprising:
a treatment tank for performing any treatment of a solid-liquid reaction, a solid-gas reaction, a gas-liquid reaction, and solid-liquid separation on a slurry containing a metal or a metal compound; a first pipe; a second pipe; and a pump, wherein one end of the first pipe has a suction opening for sucking the slurry from the treatment tank, and another end of the first pipe is connected to a suction port of the pump, one end of the second pipe is linked to a discharge port of the pump, and another end of the second pipe is connected to a microbubble generator, the microbubble generator includes a throttle that throttles a flow of the slurry and a gas supply tube for supplying gas to the throttle, and supplies microbubbles to the slurry in the treatment tank, and a slurry separator that separates the slurry into a slurry containing, as a solid content, only particles smaller than a narrow flow path portion of the throttle and a remaining slurry other than the slurry, wherein the slurry separator includes an intermediate chamber disposed outside the suction opening of the first pipe so as to surround the suction opening, openings are formed on a wall surface and/or a bottom surface of the intermediate chamber, and a liquid content of the slurry in the intermediate chamber and a solid content of the slurry having a predetermined size or less are discharged to an outside of the intermediate chamber through the openings.

2 . The slurry treatment apparatus according to claim 1 , wherein a maximum diameter of each of the openings on the wall surface and/or the bottom surface of the intermediate chamber is smaller than a size of a narrowest portion of the throttle.

3 . The slurry treatment apparatus according to claim 1 wherein an upper end of the intermediate chamber is located above a liquid level of the slurry and is opened to outside air.

4 . The slurry treatment apparatus according to claim 1 , wherein the slurry containing a metal or a metal compound is a slurry used for flotation.

5 . A slurry treatment method comprising performing treatments of a solid-liquid reaction, a solid-gas reaction, a gas-liquid reaction, and solid-liquid separation on a slurry containing a metal or a metal compound using the slurry treatment apparatus according to claim 1 .

6 . A microbubble generating unit that supplies microbubbles to a slurry containing a metal or a metal compound, the microbubble generating unit comprising:
a microbubble generator including a throttle that throttles a flow of the slurry and a gas supply tube for supplying gas to the throttle; and
a cyclone that separates the slurry into a pretreatment slurry containing, as a solid content, only particles smaller than a size of a narrowest portion of the throttle and a remaining slurry other than the pretreatment slurry, wherein
the cyclone includes an intermediate chamber configured to be disposed outside a suction opening of a first pipe so as to surround the suction opening, openings are formed on a wall surface and/or a bottom surface of the intermediate chamber, and a liquid content of the slurry in the intermediate chamber and a solid content of the slurry having a predetermined size or less are discharged to an outside of the intermediate chamber through the openings.

7 . A slurry treatment apparatus comprising:
a treatment tank for performing any treatment of a solid-liquid reaction, a solid-gas reaction, a gas-liquid reaction, and solid-liquid separation on a slurry containing a metal or a metal compound; a first pipe; a second pipe; and a pump, wherein one end of the first pipe has a suction opening for sucking the slurry from the treatment tank, and another end of the first pipe is connected to a suction port of the pump, one end of the second pipe is linked to a discharge port of the pump, and another end of the second pipe is connected to a microbubble generator, and the microbubble generator includes a throttle that throttles a flow of the slurry and a gas supply tube for supplying gas to the throttle, and supplies microbubbles to the slurry in the treatment tank, wherein the slurry containing a metal or a metal compound is a slurry used for flotation.

Assignees

• Sumitomo Metal Mining Co

Inventors

• Nakao Yoshihiko
• Ishikawa Shintaro

Classifications

• C22B23/0453

  Treatment or purification of solutions, e.g. obtained by leaching (C22B23/0407 takes precedence) · CPC title

• C22B3/22

  by physical processes, e.g. by filtration, by magnetic means {, or by thermal decomposition} (treatment or purification of solutions by liquid-liquid extraction C22B3/26) · CPC title

• B03D1/14

  Flotation machines (devices for feeding measured quantities of reagents B01J4/02; flotation apparatus for enzymology or microbiology C12M1/09) · CPC title

• B03B5/34

  Applications of hydrocyclones · CPC title

• B01J8/0055

  using cyclones · CPC title