refractory ore मीनिंग इन हिंदी

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However, it is difficult to treat metallurgically and remains a refractory ore type.
Refractory ores require pre-treatment before the gold can be adequately extracted.
Previously, Golden Star mined refractory ore from the neigbouring Bogoso property.
In 1920 however, a decline set in because the refractory ore could not be treated.
The refractory ore treatment processes may be preceded by concentration ( usually sulfide flotation ).
This may require additional treatment and processing, so in some cases low-grade violarite mineralisation is considered refractory ore.
Chlorization and smelting were seen as two methods that could remove gold from the refractory ore in the 1890s.
The most common refractory ores are pyrite and arsenopyrite, which are sulfide ores that trap the gold within them.
However in Q3 2015 Golden Star ceased refractory production and is now focused on mining non-refractory ore from the Prestea Open Pits.
The BIOX?process involves bacterial oxidation in agitated tanks for pre-treatment of refractory ores and concentrates ahead of conventional cyanide leach for gold recovery.