Title:
A METHOD FOR INTEGRATED PROCESSING OF FINELY DISPERSED METAL-CONTAINING WASTE
Document Type and Number:
WIPO Patent Application WO/2020/209761
Kind Code:
A1
Abstract:
The invention relates to the field of chemical and metal industry and may be used for integrated processing of finely dispersed metal-containing waste, in particular for processing red mud, as well as ash-slag waste of coal thermal power plants. Technical result of the claimed invention consists in improved efficiency of finely dispersed metal-containing waste processing by virtue of extracting target products via elimination of gel component and double electric layer in red mud, and elimination of double electric layer in ash-slag waste. Said technical result is achieved by a method of integrated processing of finely dispersed metal-containing waste that includes the step of mixing metal-containing waste with magnetic field activated water into the state of a pulp, and a step of subjecting the pulp in a reaction chamber to a rotating magnetic field generated by rotating ferromagnetic elements, wherein the step of subjecting the pulp to the rotating magnetic field is carried out in a vortex layer with rotation speed of ferromagnetic elements being at least 2800 rpm until a magnetostriction effect and subsequent reduction of metal oxides occurs, after which the step of hydrocyclone separation of the latter is carried out.
Inventors:
ULKO BORIS NIKOLAEVICH (RU)
EIRICH JOHANN (DE)
WELMANN VITALI (DE)
EIRICH JOHANN (DE)
WELMANN VITALI (DE)
Application Number:
PCT/RU2020/050018
Publication Date:
October 15, 2020
Filing Date:
February 10, 2020
Export Citation:
Assignee:
ULKO BORIS NIKOLAEVICH (RU)
EIRICH JOHANN (DE)
WELMANN VITALI (DE)
EIRICH JOHANN (DE)
WELMANN VITALI (DE)
International Classes:
B09B3/00; B03B5/34; C22B7/00
Foreign References:
| RU2634106C1 | 2017-10-23 | |||
| CN106311718A | 2017-01-11 | |||
| DE102006020841A1 | 2007-11-08 | |||
| DE102006020840A1 | 2007-11-15 | |||
| CN109265029A | 2019-01-25 | |||
| RU2363885C1 | 2009-08-10 | |||
| RU2588910C1 | 2016-07-10 | |||
| RU2528918C1 | 2014-09-20 | |||
| RU2634106C1 | 2017-10-23 |
Other References:
ANONYMOUS: "Andre Geim - Wikipedia", 26 May 2020 (2020-05-26), XP055698354, Retrieved from the Internet [retrieved on 20200526]
ANONYMOUS: "Magnetic water treatment - Wikipedia", 26 May 2020 (2020-05-26), XP055698355, Retrieved from the Internet [retrieved on 20200526]
M. OIWE: "Effect of magnetic field on reduction of iron oxides: magnetite and wüstite | Nature", 14 April 1977 (1977-04-14), XP055698805, Retrieved from the Internet [retrieved on 20200527]
RAI SUCHITA ET AL: "Recovery of iron from bauxite residue using advanced separation techniques", MINERALS ENGINEERING, vol. 134, 10 February 2019 (2019-02-10), pages 222 - 231, XP085618200, ISSN: 0892-6875, DOI: 10.1016/J.MINENG.2019.02.018
ANONYMOUS: "Magnetic water treatment - Wikipedia", 26 May 2020 (2020-05-26), XP055698355, Retrieved from the Internet
M. OIWE: "Effect of magnetic field on reduction of iron oxides: magnetite and wüstite | Nature", 14 April 1977 (1977-04-14), XP055698805, Retrieved from the Internet
RAI SUCHITA ET AL: "Recovery of iron from bauxite residue using advanced separation techniques", MINERALS ENGINEERING, vol. 134, 10 February 2019 (2019-02-10), pages 222 - 231, XP085618200, ISSN: 0892-6875, DOI: 10.1016/J.MINENG.2019.02.018
Attorney, Agent or Firm:
MEDVEDEV, Valery Nikolaevich (RU)
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