Sorting device and sorting method

Patent metadata

Field	Value
Publication number	US-10449550-B2
Application number	US-201515317505-A
Country	US
Kind code	B2
Filing date	Jun 9, 2015
Priority date	Jun 16, 2014
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

The present invention provides a sorting device and a sorting method for sorting a magnetically attractable substance and a non-magnetically attractable substance from a sorting target using a high gradient magnetic separator.

First claim

The invention claimed is:

1. A high gradient magnetic separating sorting device, which is capable of sorting a magnetically attractable substance and a non-magnetically attractable substance by separating the magnetically attractable substance and the non-magnetically attractable substance from a sorting target fluid which is a mixture of the magnetically attractable substance and the non-magnetically attractable substance, the sorting device comprising:
a high gradient magnetic separating section, which includes electromagnets disposed to face each other, a magnetic filter capable of attracting or detaching the magnetically attractable substance with a parallel magnetic field generated by the electromagnets, and a magnetic separation flow path with the electromagnets disposed outside and the magnetic filter disposed inside;
a sorting target fluid introducing flow path, which is coupled to one end of the magnetic separation flow path via a first on-off valve and is capable of introducing the sorting target fluid into the magnetic separation flow path;
a first carrier fluid introducing flow path, which is coupled to the one end of the magnetic separation flow path via a second on-off valve and is capable of introducing into the magnetic separation flow path, a first carrier fluid containing a dispersing agent and capable of carrying the sorting target fluid;
a non-magnetically attractable substance discharging flow path, which is coupled to other end of the magnetic separation flow path via a third on-off valve and is capable of discharging from the magnetic separation flow path, the sorting target fluid from which the magnetically attractable substance has been magnetically attracted to the magnetic filter, and the first carrier fluid;
a second carrier fluid introducing flow path, which is coupled to the other end of the magnetic separation flow path via a fourth on-off valve and is capable of introducing into the magnetic separation flow path, a second carrier fluid capable of carrying the magnetically attractable substance detached from the magnetic filter; and
a magnetically attractable substance discharging flow path, which is coupled to the one end of the magnetic separation flow path via a fifth on-off valve and is capable of discharging from the magnetic separation flow path, the second carrier fluid that carries the magnetically attractable substance detached from the magnetic filter,
wherein the sorting device comprises the first on-off valve, the second on-off valve, and the fifth on-off valve near one end of the magnetic filter, and
wherein the sorting device comprises the third on-off valve and the fourth on-off valve near the other end of the magnetic filter.

2. The sorting device according to claim 1 , further comprising a residual substance discharging flow path, which is coupled to the other end of the magnetic separation flow path via a sixth on-off valve and is capable of discharging from the magnetic separation flow path, the first carrier fluid that carries a residual substance remaining in the magnetic filter.

3. A high gradient magnetic separating sorting method for sorting a magnetically attractable substance and a non-magnetically attractable substance by separating the magnetically attractable substance and the non-magnetically attractable substance with a sorting device which is capable of sorting a magnetically attractable substance and a non-magnetically attractable substance by separating the magnetically attractable substance and the non-magnetically attractable substance from a sorting target fluid which is a mixture of the magnetically attractable substance and the non-magnetically attractable substance, where the sorting device includes: a high gradient magnetic separating section, which includes electromagnets disposed to face each other, a magnetic filter capable of attracting or detaching the magnetically attractable substance with a parallel magnetic field generated by the electromagnets, and a magnetic separation flow path with the electromagnets disposed outside and the magnetic filter disposed inside; a sorting target fluid introducing flow path, which is coupled to one end of the magnetic separation flow path via a first on-off valve and is capable of introducing the sorting target fluid into the magnetic separation flow path; a first carrier fluid introducing flow path, which is coupled to the one end of the magnetic separation flow path via a second on-off valve and is capable of introducing into the magnetic separation flow path, a first carrier fluid containing a dispersing agent and capable of carrying the sorting target fluid; a non-magnetically attractable substance discharging flow path, which is coupled to other end of the magnetic separation flow path via a third on-off valve and is capable of discharging from the magnetic separation flow path, the sorting target fluid from which the magnetically attractable substance has been magnetically attracted to the magnetic filter, and the first carrier fluid; a second carrier fluid introducing flow path, which is coupled to the other end of the magnetic separation flow path via a fourth on-off valve and is capable of introducing into the magnetic separation flow path, a second carrier fluid capable of carrying the magnetically attractable substance detached from the magnetic filter; and a magnetically attractable substance discharging flow path, which is coupled to the one end of the magnetic separation flow path via a fifth on-off valve and is capable of discharging from the magnetic separation flow path, the second carrier fluid that carries the magnetically attractable substance detached from the magnetic filter, the sorting method comprising:
a non-magnetically attractable substance sorting step in which only the first on-off valve of the on-off valves on the one end of the magnetic separation flow path is opened to the magnetic separation flow path in a state that the electromagnets are excited, to introduce the sorting target fluid from the sorting target fluid introducing flow path and have the magnetically attractable substance magnetically attracted to the magnetic filter, and only the third on-off valve of the on-off valves on the other end of the magnetic separation flow path is opened to discharge into the non-magnetically attractable substance discharging flow path, the sorting target fluid in a state that the magnetically attractable substance is magnetically attracted;
a residual non-magnetically attractable substance sorting step in which after the non-magnetically attractable substance sorting step, only the second on-off valve of the on-off valves on the one end of the magnetic separation flow path is opened to the magnetic separation flow path in a state that the electromagnets are excited, to introduce a first carrier fluid from a first carrier fluid introducing flow path, and only the third on-off valve of the on-off valves on the other end of the magnetic separation flow path is opened to have the first carrier fluid carry the sorting target fluid in a state that the magnetically attractable substance remaining in the magnetic separation flow path has been magnetically attracted to the magnetic filter, to discharge the sorting target fluid into the non-magnetically attractable substance discharging flow path from the magnetic separation flow path; and
a magnetically attractable substance sorting step in which after the residual non-magnetically attractable substance sorting step, only the fourth on-off valve of the on-off valves on the other end of the magnetic separation flow path is opened to the magnetic separation flow path in a state that the electromagnets are released from excitation, to introduce the second carrier fluid from a second carrier fluid introducing flow path, and only the fifth on-off valve of the on-off valves on the one end of the magnet

Assignees

• Aist

Inventors

• Oki Tatsuya
• Noguchi Tomohiro
• HAZUMI Taeko

Classifications

• B03C1/034

  characterised by the matrix elements · CPC title

• B03C2201/18

  Magnetic separation whereby the particles are suspended in a liquid · CPC title

• B03C1/025 Primary

  High gradient magnetic separators · CPC title