Source: http://www.google.com/patents/US7651547?dq=7,194,691
Timestamp: 2014-12-25 08:29:25
Document Index: 120736203

Matched Legal Cases: ['Application No. 102', 'application No. 0575245', 'application No. 196', 'application No. 2624302', 'application No. 3822999', 'application No. 40', 'application No. 41', 'application No. 694', 'application No. 69417103']

Patent US7651547 - Heating ilmenite to 700-950 degrees C. in the bed; gas flow from below ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsThe present invention relates to a method and a plant for the heat treatment of solids containing titanium and possibly further metal oxides, in which fine-grained solids are heated to a temperature of 700 to 950� C. in a fluidized bed reactor (1). To improve the energy utilization, it is proposed to...http://www.google.com/patents/US7651547?utm_source=gb-gplus-sharePatent US7651547 - Heating ilmenite to 700-950 degrees C. in the bed; gas flow from below through a tube into a mixing chamber of the reactor, the tube being partly surrounded by a stationary annular fluidized bed; gas velocities adjusted to particle Froude numbers; titanium oxide; iron; iron oxide (FeO)Advanced Patent SearchPublication numberUS7651547 B2Publication typeGrantApplication numberUS 10/540,376PCT numberPCT/EP2003/013983Publication dateJan 26, 2010Filing dateDec 10, 2003Priority dateDec 23, 2002Fee statusPaidAlso published asCA2510926A1, CA2510926C, DE10260737A1, DE10260737B4, US8021601, US20060162500, US20100074805, WO2004057040A1Publication number10540376, 540376, PCT/2003/13983, PCT/EP/2003/013983, PCT/EP/2003/13983, PCT/EP/3/013983, PCT/EP/3/13983, PCT/EP2003/013983, PCT/EP2003/13983, PCT/EP2003013983, PCT/EP200313983, PCT/EP3/013983, PCT/EP3/13983, PCT/EP3013983, PCT/EP313983, US 7651547 B2, US 7651547B2, US-B2-7651547, US7651547 B2, US7651547B2InventorsDirk Nuber, Michael Str�der, Werner Stockhausen, Ali-Naghi Beyzavi, Lothar Formanek, Martin HirschOriginal AssigneeOutotec OyjExport CitationBiBTeX, EndNote, RefManPatent Citations (111), Non-Patent Citations (42), Referenced by (1), Classifications (33), Legal Events (3) External Links: USPTO, USPTO Assignment, EspacenetHeating ilmenite to 700-950 degrees C. in the bed; gas flow from below through a tube into a mixing chamber of the reactor, the tube being partly surrounded by a stationary annular fluidized bed; gas velocities adjusted to particle Froude numbers; titanium oxide; iron; iron oxide (FeO)US 7651547 B2Abstract The present invention relates to a method and a plant for the heat treatment of solids containing titanium and possibly further metal oxides, in which fine-grained solids are heated to a temperature of 700 to 950� C. in a fluidized bed reactor (1). To improve the energy utilization, it is proposed to introduce a first gas or gas mixture from below through a gas supply tube (3) into a mixing chamber (7) of the reactor (1), the gas supply tube (3) being at least partly surrounded by a stationary annular fluidized bed (10) which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture as well as of the fluidizing gas for the annular fluidized bed (10) are adjusted such that the particle Froude numbers in the gas supply tube (3) are between 1 and 100, in the annular fluidized bed (10) between 0.02 and 2 and in the mixing chamber (7) between 0.3 and 30.
TECHNICAL FIELD This application is the national phase application under 35 U.S.C. �371 of International Application No. PCT/EP2003/013983 filed on Dec. 10, 2003, entitled, �Fluidized Bed Method and Plant for the Heat Treatment of Solids Containing Titanium� which claims the benefit of German Patent Application No. 102 60 737.0 filed on Dec. 23, 2002.
DESCRIPTION OF THE INVENTION Therefore, it is the object of the present invention to provide a method for the heat treatment of solids containing titanium which can be carried out more efficiently and is distinguished in particular by good conditions for heat and mass transfer.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT In the method shown in FIGS. 1 and 3, which is in particular suited for the heat treatment of solids containing titanium, solids are introduced into a reactor 1 via a supply conduit 2, as can be seen in the enlarged representation of FIG. 2. The reactor 1, which is cylindrical for example, has a central tube 3, which is arranged approximately coaxially with the longitudinal axis of the reactor and extends substantially vertically upwards from the bottom of the reactor 1.
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