Record number :
2370984
Title of article :
Beneficiation of a Greek serpentinic nickeliferous ore Part II. Sulphuric acid heap and agitation leaching
Author/Authors :
Agatzini-Leonardou، نويسنده , , Stella and Zafiratos، نويسنده , , Ioannis G.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2004
Pages :
9
From page :
267
To page :
275
Abstract :
Serpentinic laterite ore, after suitable mineral processing operations as described in Part I, was subjected to heap as well as atmospheric agitation leaching. The heap leach results showed that serpentinic laterites can be leached by this technique. The nickel and cobalt recoveries achieved were 60% and 45%, respectively, in 10 days. The sulphuric acid consumption amounted to 40 kg H2SO4/kg Ni. However, the effectiveness of leaching depended on the calcite content of the ore as this adversely affected the permeability of the heap. itation leach tests showed that the ore could be leached at atmospheric pressure without problems. Recoveries achieved were up to 74% for nickel and 51% for cobalt, after 2 h of leaching. The sulphuric acid consumption, depending on conditions, averaged 55 kg/kg Ni. Pulp mixing and filtration were excellent.
Keywords :
Serpentine , Nickel laterite ores , Agitation leaching , Sulphuric Acid , heap leaching
Journal title :
HYDROMETALLURGY
Serial Year :
2004
Link To Document :
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