Title:
PLASMA ARC PROCESS AND APPARATUS FOR THE PRODUCTION OF FUMED SILICA
Document Type and Number:
WIPO Patent Application WO/2022/241545
Kind Code:
A8
Abstract:
An apparatus for producing fumed silica from silica is described, wherein a plasma arc reactor includes at least one top electrode extending to the molten silica contained in the reactor, a conductive plate provided under the molten silica and a bottom anode. A plasma arc is adapted to be generated, wherein the plasma arc is provided at a tip of the electrode and is adapted to be transferred directly to the molten silica for forming SiO. A quenching system is also provided, such as hydrogen and oxygen containing gases that are injected within the reactor. The quenching system is adapted to reform SiO2 but in nano-sized amorphous particles, with a reactor outlet being provided for allowing the amorphous SiO2 nano particles in the form of fumed silica to exit the reactor.
Inventors:
SHAHVERDI ALI (CA)
GAGNON JEAN-RENÉ (CA)
CARABIN PIERRE (CA)
GAGNON JEAN-RENÉ (CA)
CARABIN PIERRE (CA)
Application Number:
PCT/CA2022/050770
Publication Date:
November 23, 2023
Filing Date:
May 16, 2022
Export Citation:
Assignee:
HPQ SILICA POLVERE INC (CA)
International Classes:
C01B13/28; B01J19/24; C01B33/12; C01B33/18; H05H1/48
Attorney, Agent or Firm:
BENOIT & COTE INC. (CA)
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