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1. WO1998017842 - SLURRY AND METHOD FOR PRODUCING REFRACTORY BORIDE BODIES AND COATINGS FOR USE IN ALUMINIUM ELECTROWINNING CELLS

Publication Number WO/1998/017842
Publication Date 30.04.1998
International Application No. PCT/US1997/019067
International Filing Date 20.10.1997
Chapter 2 Demand Filed 14.05.1998
IPC
C04B 35/58 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
35Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
515based on non-oxides
58based on borides, nitrides or silicides
C04B 41/50 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
45Coating or impregnating
50with inorganic materials
C04B 41/87 2006.01
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
41After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
80of only ceramics
81Coating or impregnating
85with inorganic materials
87Ceramics
C25C 3/08 2006.01
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
3Electrolytic production, recovery or refining of metals by electrolysis of melts
06of aluminium
08Cell construction, e.g. bottoms, walls, cathodes
CPC
C04B 2111/00879
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
2111Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
00474Uses not provided for elsewhere in C04B2111/00
0087for metallurgical applications
00879Non-ferrous metallurgy
C04B 35/5156
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
35Shaped ceramic products characterised by their composition
515based on non-oxide ceramics
5156based on rare earth compounds
C04B 35/5805
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
35Shaped ceramic products characterised by their composition
515based on non-oxide ceramics
58based on borides, nitrides, ; i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides; or silicides
5805based on borides
C04B 35/58064
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
35Shaped ceramic products characterised by their composition
515based on non-oxide ceramics
58based on borides, nitrides, ; i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides; or silicides
5805based on borides
58064based on refractory borides
C04B 35/58071
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
35Shaped ceramic products characterised by their composition
515based on non-oxide ceramics
58based on borides, nitrides, ; i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides; or silicides
5805based on borides
58064based on refractory borides
58071based on titanium borides
C04B 35/58078
CCHEMISTRY; METALLURGY
04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE
35Shaped ceramic products characterised by their composition
515based on non-oxide ceramics
58based on borides, nitrides, ; i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides; or silicides
5805based on borides
58064based on refractory borides
58078based on zirconium or hafnium borides
Applicants
  • MOLTECH INVENT S.A. [LU]/[LU] (AllExceptUS)
  • SEKHAR, Jainagesh, A. [US]/[US] (UsOnly)
  • DURUZ, Jean-Jacques [CH]/[CH] (UsOnly)
  • LIU, James, Jenq [--]/[US] (UsOnly)
Inventors
  • SEKHAR, Jainagesh, A.
  • DURUZ, Jean-Jacques
  • LIU, James, Jenq
Agents
  • DESHMUKH, Jayadeep, R.
  • CRONIN, Brian
Priority Data
PCT/US96/1659519.10.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SLURRY AND METHOD FOR PRODUCING REFRACTORY BORIDE BODIES AND COATINGS FOR USE IN ALUMINIUM ELECTROWINNING CELLS
(FR) BOUILLIE ET PROCEDE DESTINES A LA PRODUCTION DE CORPS ET DE REVETEMENTS REFRACTAIRES A BASE DE BORURE UTILES DANS DES CELLULES D'EXTRACTION ELECTROLYTIQUE D'ALUMINIUM
Abstract
(EN)
A refractory boride body or coating made of a boride of titanium, chromium, vanadium, zirconium, hafnium, niobium, tantalum, molybednum and cerium is produced from a slurry of the refractory boride or a precursor in a colloidal carrier preferably composed of two or more different grades of the same colloidal carrier selected from colloidal alumina, yttria, ceria, thoria, zirconia, magnesia, lithia, monoaluminum phosphate and cerium acetate. The slurry can also comprise an organic additive selected from polyvinyl alcohol; polyacrylic acid; hydroxy propyl methyl cellulose; polyethylene glycol; ethylene glycol, butyl benzyl phthalate; ammonium polymethacrylate and mixtures thereof. The refractory boride body or coated body is useful as a component of aluminium electrowinning cells.
(FR)
L'invention concerne un corps ou un revêtement réfractaire à base de borure, constitué d'un borure de titane, de chrome, de vanadium, de zirconium, de hafnium, de niobium, de tantale, de molybdène ou de cérium, produit à partir d'une bouillie de ce borure réfractaire ou d'un précurseur, dans un support colloïdal composé de préférence de deux ou davantage de qualités différentes du même support colloïdal sélectionné dans le groupe comprenant de l'alumine, de l'yttria, de la céria, de la thorine, de la zircone, de la magnésie, de la lithine, du phosphate de monoaluminium et de l'acétate de cérium, sous forme colloïdale. La bouillie peut également comprendre un additif organique sélectionné dans le groupe constitué par de l'alcool polyvinylique; de l'acide polyacrylique; de l'hydroxypropylméthylcellulose; du polyéthylèneglycol; de l'éthylèneglycol; du phtalate de butyle et de benzyle; du polyméthacrylate d'ammonium et leurs mélanges. Ce corps réfractaire ou à revêtement réfractaire à base de borure est utile en tant que composant de cellules d'extraction électrolytique d'aluminium.
Also published as
NO19991841
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