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Tipo de medios de molienda y recubrimiento<br />
• Bond in 1964 speculated that well over half of media wear results<br />
from corrosion of metal surfaces being exposed in grinding (Adam et<br />
al, 1984).<br />
• The importance of corrosive wear at lab scale (25% to 75% of metal<br />
loss) in wet grinding as part of the effect of corrosion, abrasion and<br />
impact during grinding Radsizsewski (<strong>20</strong>02), with an average total<br />
wear of 60.3% (Yelloji Rao and Natarajan, 1991).<br />
• Adam et al (1984) observed that grinding in steel mills adversely<br />
affected the flotation of pyrrhotite, and galvanic coupling of pyrrhotite<br />
with active metals resulted in the formation of hydroxide or oxide<br />
and sulphate species of iron on the pyrrhotite surface.<br />
• Wei and Sandenbergh (<strong>20</strong>07) showed that, for comparable grinds<br />
and reagent dosages of the Rosh Pinah ore containing lead–zinc<br />
sulphide system, the choice of grinding media has a marked effect<br />
on metal recovery and selectivity.
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