Method for recovering manganese from low content manganese carbonate raw ore |
Title： |
| Method for recovering manganese from low content manganese carbonate raw ore |
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Application Number： |
200410069373 |
Application Date： |
2004/07/21 |
Announcement Date： |
2005/03/02 |
Pub. Date： |
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Publication Number： |
1587423 |
Announcement Number： |
1238534 |
Grant Date： |
2006-1-25 |
Granted Pub. Date： |
2006-1-25 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
C22B 1/02, C22B 3/04, C22B 3/46, C22B 47/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Zhu Guocai, Li Fuping |
Key Words： |
recovering method, manganese, low content, manganese carbonate, raw ore |
Abstract： |
The present invention relates to ferrous metal chemical ore dressing technology, and is the method of recovering manganese from low content manganese carbonate ore. The technological process includes ammonium salt roasting mode to convert manganese in manganese carbonate ore material of content 10-25 wt% into soluble manganese salt, the precipitation reaction of ammonia and CO2 produced during roasting and soluble manganese salt in leached liquid to form the concentrated ore manganese with manganese content over 50 wt% in the manganese recovering rate up to 82 % without waste gas and waste effluent produced. The ammonium salt in solution may be sued as the roasting material to realize closed circulation. In the temperature of 300-800 deg.c, SiO2, Al2O3 and Fe2O3 do not react with NH4Cl and (NH4)2SO4, and manganese is recovered selectively in the green technological process. |
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 Relevancy information |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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