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Showing 1 to 4 of 4 for “"Zinc extraction"”.
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Direct oxidative Ammonia-Ammonium salt leaching of sphalerite concentrate from the Gamsberg Mine and study of the catalytic effect of Cu(II) on Zinc extraction
… Fe, and the addition of Cu(II) ions improved Zn extraction in an oxygen medium. Ammonium chloride was then used to optimise parameters such as temperature, total ammonia concentration, pulp density and Cu(II) concentration for Zn extraction. The optimal conditions found were 6 mol/L [NH3]T …
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The role of surfactants in the leaching of zinc sulphide minerals at temperatures above the melting point of sulphur
… diamine (OPD) in the liquid sulfur-aqueous zinc sulphate-zinc sulfide mineral system has been studied. The effect of the various surfactants on the liquid sulfur-aqueous system interfacial tensions and the liquid sulfur-mineral contact angle were measured in a high temperature-high pres-sure …
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The effect of solute size distribution on the roasting and leaching of a complex sulfide ore
… highest iron recovery, the highest copper and zinc extraction rates and the lowest sulfur content of leach residue. 3. In dilute sulfuric acid leaching there is no significant effect of pulp density within the range tested in this investigation. The general trends are: iron recovery decreases …
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Disponibilidad y efectividad relativa de quelatos de zinc aplicados a suelos en un cultivo de lino (Linum usitatissimum L.) textil
… de micronutriente lábil en los suelos. SUMMARY Zinc fertilizers are habitually applied to numerous agricultural crops of agricultural soils. Zinc sulphate (ZnSO4) is one of most common micronutrient sources, but the formulas of organic origin are used more and more to correct the deficiencies of …