Description
Galena lead beneficiation and upgrading plant
Galena is kind of important lead mineral and gravity separation is
usually involved to get galena concentrate when floatation
separation is used in some places. More and more galena lead
beneficiation factories use gravity separation instead of
floatation separation. Why is gravity separation adopted for galena
enrichment? And what advantages does gravity separation take over
floatation separation, please?
The composition of galena is PbS with its good floatability and
specific gravity of 7.**7.6. So the beneficiation of galena lead
ore is floatation separation and gravity separation. Floatation
separation makes use of its floatability to get high grade galena
concentrate. Floatation beneficiation processing can help to get
high enrichment efficiency, but it requires much about the operator
with its high plant investment and high operation cost. However,
floatation separation can be unfriendly to environment and it has
been limited by government, and it will be taken place by gravity
separation. Gravity separation has a low requirement about the
operator with its small plant investment, and low operation cost.
With reasonable plant allocation, the beneficiation efficiency of
gravity separation is even better than floatation separation. So
galena lead ore gravity upgrading will be the leading beneficiation
method instead of floatation separation.
Galena gravity upgrading works greatly to gain high grade galena
lead concentrate on basis of big specific gravity difference
between galena and its gangue. The crude galena is crushed and
screened to make the galena granules liberated from its gangue.
Kind of gravity separators like jigging machine can be used to
purify the galena to get galena concentrate and tailings. Machines
like crushers, rod mills, jig separators, shaking tables can be
involved in galena gravity processing flow sheet. The simple
crushing breaks the big blocks into small ones while rod mill, as
kind of milling equipment, is used to mill the crushed output to be
fine of *5mm without any extensive-milling. Galena lead jig machine
can be involved to enrich the milled galena to get the final
concentrate and tailings. There shall be some fine granules in the
tailings from jigger, so a shaking table can be used to recover the
galena in the tailings to improve the recovery.
