Centrifuge operation notes

GNLW series decanter centrifuge is horizontal spiral type which all model of decanting centrifuge that GN Solids manufactured.   Decanter centrifuge is the fifth stage equipment in drilling mud system for solids control and mud cleaning. The superiority of Decanting Centrifuge is embodied in the solids processing size. Decanter Centrifuge could remove the solid particles with size 2-7 microns by using the principle of centrifugal action in high RPM and  it is an ideal choice for separating fine particles in drilling mud. 

 America decanter centrifuge

Decanter centrifuge is a machinery that is delicate to remove fine particles and it requires  to be closely monitored due to there are a lot of moving parts involved. Different models of decanter centrifuge in various treating capacity and RPM operation speed are operate differently.  Please consult with your owner's manual.  Below are common notes when operate decanter centrifuge:

1.    Make sure the belts are installed properly and tight before turn the decanter centrifuge on.

2.    Use hands to rotate the drum to make sure the drum can move freely before turn the decanter centrifuge on. 

3.    Before turn on the decanter centrifuge on, turn on the feeding pump first.

4.    Monitor the feeding rate of the drilling mud according decanter centrifuge's owner manual.  Decanter centrifuge's RPM rate is need to reach to operation rate before processing the drilling mud.

5.    Any unusual noises happen during the operation, it need to stop the operation right away.

6.    Do not feeding the mud more than operation capacity to avoid the choke block. 

7.    The weighted and high viscosity drilling fluid needs  low feeding speed and high dilution rate. 

8.     To ensure that you can stir in the entrance of centrifuge and the barite slurry return to the mud tank. 

Shut-down the operation by stop the feeding pump, stop dilution, and finally shut the decanter centrifuge down.

Decanter Centrifuge

GNLW Decanter Centrifuge provides high-speed, variable-speed, big bowl and big volume centrifuges designed specifically to process drilling fluids/mud and drilling wastes to meet the highest environmental standards. High fluid recovery rates and efficient solids control are crucial to any drilling operations. By using GN decanter centrifuges, it will help drilling contractors dramatically reduce total drilling fluids cost and leave much less drilling waste for disposal.

GN Decanter Centrifuges are mainly utilized for the following devisions:

decanter centrifuge

Oilfield Decanter Centrifuges for oil & gas well drilling operations are designed with solid bowl diameters of 14 inch to 22 inch and bowl length of 50 inch to 71 inch. Most centrifuges are available in Fixed Speed (G/S marking) and Variable Speed (VFD marking).

GNLW363 are cost-effective, most durable, high speed centrifuge for drilling mud solids control.
GNLW553 are big bowl, big volume, high efficiency decanter centrifuge for drilling waste management.

Mining & Diamond Drilling Operations Mini Centrifuge , we specially designed small capacity, small footprint centrifuge for very fine solids separation.

Model
GNLW223G
GNLW452S
GNLW363G (Fixed)
GNLW363VFD
GNLW453VFD
GNLW553VFD
Bowl Diameter
220mm
(8.7inch)

450mm
(17.7inch)

360mm
(14inch)
450mm
(18inch)
550mm
(22inch)
Bowl Length
660mm
(26inch)
1100mm
(43.3inch)
1270mm
(50inch)
1580mm
(62inch)
1800mm
(71inch)
Max Capacity
40GPM
(9m3/h)
250GPM
(57m3/h)
200GPM
(45m3/h)
350GPM
(80m3/h)
500GPM
(110M3/h)
Typical Capacity
26GPM
(6m3/h)
176GPM
(40M3/h)
132GPM
(30m3/h)
260GPM
(60m3/h)
400GPM
(90m3/h)
Max Bowl Speed
4900RPM
2200RPM
3900RPM
3500RPM
3200PRM
Typical Bowl Speed
4500RPM
& 3800RPM
1800RPM
3200RPM
N/A
N/A
N/A
N/A
0~3200 RPM
0~2800 RPM
0~2800 RPM
G-Force
2492 @ 4500RPM
1777 @ 3800RPM
815 @ 1800RPM
2062 @ 3200RPM
1973 @ 2800RPM
2412 @ 2800RPM
Separation point
2~5µm
5~7μm
2~5 μm
2~5µm
2~5μm
Main Drive
11KW(15HP)
45KW(60HP)
37KW(50HP)
55KW(75HP)
90KW(120HP)
Back Drive
N/A
N/A
11KW(15HP)
22KW(30HP)
37KW(50HP)
Ex-proof Grade
ExdIIBt4 Or IEC, ATEX optional
Positive pressure Ex-proof for VFD model

 

GN Decanter Centrifuge Features:

1. Duplex Stainless Steel Grade 2205 made by centrifugal casting as Bowl Material

2. Stainless Steel 316 conveyor and main body resist corrosion and prolong service life.
3. Tungsten alloy tile protects conveyor from wearing and increases solids conveying efficiency.
4. Replaceable tungsten carbon allay ring protects solids discharge port.
5. German FAG or Sweden SKF Bearings
6. Electrical components: SIEMENS/Schneider, ATEX or IEC Ex for option.
7. 3 overload safety protection: the first is the safety protection device of the gear box, the second is the hydraulic coupler overload protection, and the third is the control panel with over currency protection.
8. Southwest Petroleum University Technology Support

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Drilling Mud Decanter Centrifuge Specialist