Absorb. To drink in, suck up, like a sponge. Adsorb. To condense and hold a gas on the surface of a solid, particularly metals. From
Table of ContentsOptimum Operating Conditions of a Spiral ConcentratorThe Spiral’ Static DistributorThe Primary Spirals SeparatorThe Cleaner Spiral SeparatorMaintenance of the SpiralsHumphreys Spiral ConcentratorWhen to use a Gravity Spiral
Table of ContentsEffect of SilicaEffect of Calcium CompoundsEffect of Magnesium CompoundsEffect of IronEffect of Nickel and CobaltEffect of AluminiumEffect of ZincEffect of ArsenicEffect of CopperEffect
Table of ContentsPrevent Gold Losts by DustingEffect of Adding Nitre Cake DirectEffect of Temperature in the Nitre Cake MethodTime Required for the Nitre Cake MethodVessel Required for
Table of ContentsStrong Nitric AcidStrong Sulphuric AcidDilute Sulphuric Acid and AirDissolving Out Gold with Chlorine Strong Nitric Acid Many attempts were made to further purify
Table of ContentsPrecipitation on ZincUsual Refining Method Now AdoptedImpuritiesModification of Acid TreatmentUse of Nitre Cake as a Substitute for Sulphuric AcidExperiments with Caustic SodaDistillation Process
The method just described aims at leaving gold in an insoluble state at the anode. Other impurities are usually left there, and the gold sponge,
Table of ContentsMoebius ProcessThe Improved Moebius Plant This attractive method of separating gold from silver has made some headway, and will in many cases replace
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