منابع مشابه
Nickel Sulfide versus Laterite : the Hard Sustainability Challenge Remains
There are widespread nickel resources around the world, but divided principally between nickel sulfide or laterite (oxide) resources. Historically production has been dominated by sulfide ores but future production is increasing shifting to laterite ores. The principal reason for this historically is that sulfide ores are easier to process, through conventional mining, smelting and refining, co...
متن کاملThe Genesis and Morphology of Hawaiian Ferruginous Laterite Crusts
Hawaiian soils having hard sterile surfaces have been described by Sherman et al; 1 Published with the approval of the Director of the University of Hawaii Agricultural Experiment Station, Honolulu, T. H., as Technical Paper No. 196. Manuscript received March 16, 1950. "Chairman, Department of Soils and Agricultural Chemistry, University of Hawaii Agricultural Experiment Station. MASSIVE FERRUG...
متن کاملMicrohyla laterite sp. nov., A New Species of Microhyla Tschudi, 1838 (Amphibia: Anura: Microhylidae) from a Laterite Rock Formation in South West India
In recent times, several new species of amphibians have been described from India. Many of these discoveries are from biodiversity hotspots or from within protected areas. We undertook amphibian surveys in human dominated landscapes outside of protected areas in south western region of India between years 2013-2015. We encountered a new species of Microhyla which is described here as Microhyla ...
متن کاملGrowing Eremanthus erythropappus in crushed laterite: A promising alternative to topsoil for bauxite-mine revegetation.
Topsoil is the preferred substrate for areas requiring rehabilitation after bauxite mining. However, topsoil is sometimes lacking and so there is a need to test the suitability of other, locally available substrates. In an abandoned bauxite mine in Southeastern Brazil, small patches of native vegetation spontaneously established in shallow depressions over weathered laterite, suggesting that gr...
متن کاملMechanistic and Kinetic Analysis of Na2SO4-Modified Laterite Decomposition by Thermogravimetry Coupled with Mass Spectrometry
Nickel laterites cannot be effectively used in physical methods because of their poor crystallinity and fine grain size. Na2SO4 is the most efficient additive for grade enrichment and Ni recovery. However, how Na2SO4 affects the selective reduction of laterite ores has not been clearly investigated. This study investigated the decomposition of laterite with and without the addition of Na2SO4 in...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1911
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s0016756800116802