1,721,031 research outputs found
Re-utilization of Zinc-Hydrometallurgy waste and Granite Mud in the Glass-Ceramic Production.
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Sulla preconcentrazione pneumatica di minerali pesanti delle sabbie con particolare riferimento al separatore DRY-FLO'
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Reuse of products from waste anodes of aluminium smelter
No full textThis study aims to assess the presence of fluorine in products (concentrates and
tailings) of selective froth flotation of materials resulting from demolition of electrolytic cells
used in aluminium electromining. In fact in a previous work (Ciccu et al. 2009) the possibility of
recovering a combustible matter from this wastes using froth flotation has been studied.
In particular the following aspects have been evaluated:
· The relationship between F and C contents in flotation products
· The need to reduce the content of F in the concentrates for use them as fuels in accordance
with the current national and international laws
· The convenience to reduce the content of F in the flotation tailings destined to waste deposits.
The levels of F assessed in the products suggest to consider the possibility of recovering this
element as by-product to be used in the cement industry. The results show that the presence of F
in the products of froth flotation, although being a penalizing element, does not preclude the
recovery of this material to be used as fuel, especially if appropriate precautions are taken
La tecnologia water-jet: ulteriori sviluppi nel campo del trattamento superficiale rustico delle rocce ornamentali
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