Montreal, Canada
Montreal, Canada

Rio Tinto Alcan Inc. is a Canadian company based in Montreal. It was created on November 15, 2007 as the result of the merger between Rio Tinto PLC's Canadian subsidiary, Rio Tinto Canada Holding Inc., and Canadian company Alcan Inc. On the same date, Alcan Inc. was renamed Rio Tinto Alcan Inc..Rio Tinto Alcan Inc. is the global leader of aluminium mining and production, above its one time parent Alcoa , Rusal and some Chinese public companies. Wikipedia.

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Patent
Rio Tinto Alcan | Date: 2017-03-01

A screw press (14) for separating liquid from a solid-liquid mixture, comprises a casing (18) having inlet and outlet sections (24, 26), and a filter section (28) therebetween. The filter section (28) includes an axially extending stack of coplanar filtration plates (36) defining a core passage for receiving a screw configured to convey the solid-liquid mixture from the inlet section (24) to the outlet section (26) while compressing and dewatering the solid-liquid mixture by forcing at least part of the liquid content of the mixture to be expelled out of the casing through inter-plate gaps (40) defined between each pair of adjacent filtration plates (36). The filtration plates (36) are fixed relative to one another and clamped in direct intimate face-to-face contact by a clamping assembly (38) operable for applying a predetermined axially clamping pressure substantially uniformly about the core passage. The inter-plate gaps (40) are controlled by the surface roughness (R) of the plates (36) and the clamping pressure.


There is described herein a method and system for determining a dosing of a binding agent for combining with a particulate material to produce an electrode. Two indices, namely a simulated baked density and an image characteristic, are obtained from an unbaked electrode of a batch N. The indices and data from batches N and N-1 are used in order to determine a dosing of the binding agent for batch N+1.


Patent
Rio Tinto Alcan | Date: 2015-06-02

A dry scrubbing system and process wherein an acid gas comprising at least one pollutant is modified in a humid zone of a duct such that a relative humidity of between 2% and 90% is achieved. The humidified gas is then contacted with chalked lime in a reaction zone. The reaction zone components are subsequently filtered in a filtering zone to provide a filtered gas having reduced concentration of the at least one pollutant when compared to the initial acid gas.


Patent
Rio Tinto Alcan | Date: 2015-04-09

A screw press for separating liquid from a solid-liquid mixture includes a casing having inlet and outlet sections, and a filter section there between. The filter section includes an axially extending stack of coplanar filtration plates defining a core passage for receiving a screw configured to convey the solid-liquid mixture from the inlet section to the outlet section while compressing and dewatering the solid-liquid mixture by forcing at least part of the liquid content of the mixture to be expelled out of the casing through inter-plate gaps defined between each pair of adjacent filtration plates. The filtration plates are fixed relative to one another and clamped in direct intimate face-to-face contact by a clamping assembly operable for applying a predetermined axially clamping pressure substantially uniformly about the core passage. The inter-plate gaps are controlled by the surface roughness of the plates and the clamping pressure.


Patent
Rio Tinto Alcan | Date: 2017-05-10

The invention relates to an anode assembly (100) including an anode (3) and an anode holder (4) for producing aluminium, characterised in that the anode assembly (100) comprises an electrical connection element (1) for electrically connecting the anode holder (4) to the anode (3), and at least one thermally insulating element (6) arranged such as to reduce the heat transfer between the anode (3) and the anode holder (4) during the production of aluminium.


An aluminum alloy includes, in weight percent, 0.70-0.85 Si, 0.14-0.25 Fe, 0.25-0.35 Cu, 0.05 max Mn, 0.75-0.90 Mg, 0.12-0.18 Cr, 0.05 max Zn, and 0.04 max Ti, the balance being aluminum and unavoidable impurities. The alloy may be suitable for extruding, and may be formed into an extruded alloy product.


Patent
Rio Tinto Alcan | Date: 2017-05-10

The invention relates to an electrolytic cell (100) which includes a box (200) comprising side walls (3), and a side insulation coating covering the side walls (3), the side insulation coating including: thermally insulating elements (1) made of compressible material; bracing elements (2) made of refractory material having at least one side surface, the thermally insulating elements (1) and the bracing elements (2) being affixed in an alternating manner against at least one side wall (3) of the box (200); and inner facing blocks (5) arranged such that each inner facing block (5) bears against the side surface of at least two bracing elements (2). The side insulation coating can also include protection elements (4) made of refractory material or outer facing panels (6).


Patent
Rio Tinto Alcan | Date: 2017-03-01

A screw press (14) for separating liquid from a solid-liquid mixture comprises a filter casing (18) having inlet and outlet sections (24, 26), and a filter section (28) therebetween. A screw (20) is mounted in the casing (18) for conveying the solid-liquid mixture from the inlet section (24) to the outlet section (26) while compressing the solid- liquid mixture and forcing at least part of a liquid content thereof to be expelled out of the filter casing (18). The casing (18) and the screw (20) are of modular construction. The filter section (28) has at least first and second serially interconnectable filter sections (28a, 28b), and the screw (20) has at least first and second serially interconnectable screw sections (20a, 20b) respectively disposed in the first and second filter sections (28a, 28b) for joint rotation as a unitary component. The first and second screw sections (20a, 20b) have a continuous screw flight (34) having a flight outside diameter. The first and second screw sections (20a, 20b) are detachably coupled to one another by a coupling (62) provided at the outside diameter of the flight (34).


The invention relates to an electrode material, preferably an inert anode material, comprising at least one metallic core and a cermet material, being characterized in that: said metallic core comprises at least one alloy of nickel (Ni) and iron (Fe), said cermet material comprises at least, as percentages by weight: 45 to 80 % of a nickel ferrite oxide phase (2) of composition NixFeyMzO4 with 0.60 (FR)Linvention concerne un matriau dlectrode, de prfrence un matriau danode inerte, comprenant au moins un cur mtallique et un matriau cermet, se caractrisant en ce que : ledit cur mtallique comprend au moins un alliage de nickel (Ni) et de fer (Fe), ledit matriau cermet comprend au moins en pourcentages massiques : 45 80 % dune phase (2) doxyde de ferrite de nickel de composition NixFeyMz04 avec 0,60


Patent
Rio Tinto Alcan | Date: 2017-04-05

A dry scrubbing system (800) and process wherein an acid gas (701) comprising at least one pollutant is modified in a humid zone (810) of a duct (100) such that a relative humidity of between 2% and 90% is achieved. The humidified gas is then contacted with chalked lime (703) in a reaction zone (820). The reaction zone components are subsequently filtered (400) in a filtering zone (830) to provide a filtered gas (704) having reduced concentration of the at least one pollutant when compared to the initial acid gas.

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