The centrifuge workds with an principle of
accelerated settling , centrifuge G force will help solisd settling much
quicker . Let’s think about a simple sedimentation vessel to understand it’s
working principle , the solids in fluids will settle to bottom of the
sedimentation vessel by a period of time later . In a drilling fluids that
weight 14 lb/gal and 50 micron barite particle will settle at the same rate as
an 81 micron drill solids . All solids can have a detrimental effect on the
drilling fluids viscosity . That means a low specific gravity solids will has
an equivalent spherical diameter that is 1.6 times that of a barite solids and
settle at the same rate as the barite particle . This is the reason that a centrifuge does not separate varite from low
gravity solids .
The convey of solids out of the decanter
centrifuge , the conveyor and bowl mus rotate at slightly different speed .
This is accomplished using a planetary gear box for belt drive centrifuge and
typically the entire assembly rotates in the same direction but the conveyor
rotates at a slightly slower speed . The conveyor will move drilling solids to
the solids discharge end and the fluids part out of the liquid discharge end .
The centrifuge will provide a method of
increasing the settling force on the drilling solids suspended in fluids . The
force depends on the mass of the solids and not the chemical composition .
Drilling solids with the same mass , maybe barite or low gravity solids or gold or something , it will settle at the
same rate . The decanter centrifuge are able to separatesolisd above and bellow
the 2 to 10 micron size range . In the weighted drilling mud , the centrifuge
will be capable of eliminating very small particals because
of dramatic increase in both low and high shear rate viscosity .
GN
Solids America is the first USA based China solids control company. GN’s
products are equal in quality and performance as its US and European peers. It
is sure to better serve the end users.
GN can offers customized solutions on the drilling
waste management field Welcome you
contact GN group freely for solution.
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