Production of aluminum fluoride from the outbreak of spent aluminum electrolysis cells
US2011271796A1
Method for the selective acidic dezincification of steel scrap
DE19946326A1
Recycling colored metals from the slag of copper winning comprises reacting the granulated slag with semi-concentrated sulfuric acid, roasting the cake produced and treating with alkali
DE19918793A1
Three-band phosphor, from scrap discharge lamps, is recycled by oxidative mineral acid leaching for impurity removal and carbonate leaching for selective yttrium-europium oxide dissolution
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Removing gold and silver from antimony ores - by reacting with ammonia under oxygen pressure and high temp. to remove noble metals in soln.
DE3710725A1
Process for the direct treatment of rhenium-containing molybdenum sulphides with ammonia
ZW19186A1
Process for the recovery of noble metals from ore-concentrates
DE3629888A1
Metering apparatus for multi-tube vibrating mills
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Rotary-chamber vibration grinding mill
DE3143756A1
Rotary-chamber vibrating mill
DE3132668A1
Process for producing alkali-free manganese raw material from cryptomelane
DE2855467A1
Synthetic titanium di:oxide prodn. from rutile - by direct dissolution with sulphuric acid after activation by milling to alter crystal lattice structure
DE2332515A1
Milling container of vibratory mill - has milling space divided into interconnected control zone and milling zone
