CA2261527A1 - Method of pretreating ore - Google Patents
Method of pretreating ore Download PDFInfo
- Publication number
- CA2261527A1 CA2261527A1 CA 2261527 CA2261527A CA2261527A1 CA 2261527 A1 CA2261527 A1 CA 2261527A1 CA 2261527 CA2261527 CA 2261527 CA 2261527 A CA2261527 A CA 2261527A CA 2261527 A1 CA2261527 A1 CA 2261527A1
- Authority
- CA
- Canada
- Prior art keywords
- ore
- pretreating
- kiln
- hot gases
- helium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A method of pretreating ore involves placing ore into a kiln. Hot gases are circulated at temperatures in excess of 1000 degree fahrenheit in the kiln to heat the ore. The hot gases are a mixture of helium and hydrogen with a helium content of at least 20% by volume in order to avoid combustion or oxidization. Ore subjected to this treatment tends to crumble, which facilitates subsequent processing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2261527 CA2261527C (en) | 1999-02-12 | 1999-02-12 | Method of pretreating ore |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA 2261527 CA2261527C (en) | 1999-02-12 | 1999-02-12 | Method of pretreating ore |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2261527A1 true CA2261527A1 (en) | 1999-12-20 |
CA2261527C CA2261527C (en) | 2006-01-03 |
Family
ID=29555136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA 2261527 Expired - Fee Related CA2261527C (en) | 1999-02-12 | 1999-02-12 | Method of pretreating ore |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2261527C (en) |
-
1999
- 1999-02-12 CA CA 2261527 patent/CA2261527C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2261527C (en) | 2006-01-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
FZDC | Correction of dead application (reinstatement) | ||
MKLA | Lapsed |
Effective date: 20140212 |