Concentration of Laterites Using Biomass
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Date
2015-06-11
Journal Title
Journal ISSN
Volume Title
Publisher
Kenya Industrial Property Institute
Abstract
A method of concentrating iron in laterites to make the iron extraction process economical
is disclosed. Concentration using biomass yields higher levels of iron by using appropriate
ratio of biomass: laterites. The concentration of iron in the laterites was done by heating
a laterite/charcoal mixture in the temperature range 500-700oC in a ceramic container, a
slow current of air (0.5- 0.7cm3/sec) was passed thus generating carbon monoxide in-situ.
The process involves cooling and picking iron containing mineral. The optimum ratio of
biomass: laterite was found to be 1:20 by mass. The iron in the raw laterites is
predominantly minerals goethite, FeO.OH and haematite, Fe203, as shown by presence
of peaks at diffraction angles of 20 = 21.51 ° and 20 = 54.11 °respectively. After magnetseparation iron was present predominantly as the mineral, magnetite Fe304, with
diffraction peak at 20 = 36°. The percentage of iron in the magnet-separated product is
increased to 55-62%.
Description
INNOVATION BY: Naftali Muriithi; Peter Waithaka; Ruth Wanjau and Jackson Wachira
Muthengia Registration no.: 93 (45)
Keywords
innovation, Laterites, Biomass
Citation
Industrial Property Journal (Journal of Patents, Industrial Designs, Utility Models and Trade marks) No.2015/06 30th June, 2015