Apr 09

Decanter centrifuge is one of the core equipment for solids control system. As shale shaker separates solida above 400microns by 40mesh screen, Desander searates solids above 50microns, Desilter searates solids above 20microns, decanter centrifuge separates 2-7 microns and above for separate fine cuttings.

Decanter centrifuge working environment

1) Oil and Gas Drilling is the first environment for centrifuge working in the drilling industry. Decanter centrifuge spec is very strict for this environment. Normally IECEX/ATEX explosion proof standard is required for developed countries
2) Drilling waste management industy is growing very fast and popular in Latin America and middle east. Cutting Dryer, Hi-G dryer and decanter centrifuge is the core equipment for drilling waste management system
3) CBM/HDD drilling is a new market  that require decanter centrifuge. It was seldom that clients need centrifuge to save cost but more and more clients like to working a centrifuge for better performance.

Decanter Centrifuge working principle

 The centrifuge of series LW(G) is driven by two motors. The main motor drives the drum and outer casing of differential through the belt. And the auxiliary motor, after shifting gears by the differential, will drive spiral propeller, which will make the drum and the spiral propeller rotate in the same direction with revolution difference possessed to some extent.
And when the material is fed into the inner canister of the spiral propeller from the feed pipe, the material will be flowing to the drum wall through material exit. The degree phase of the material is different because it is subjected to different centrifugal force and so, the material with heavy phase will be quickly accumulated onto the inner wall of drum while the material with light phase will slowly stick to the surface of heavy phase, a layer of interface to be formed between degree phases. And along with increase of heavy phase accumulation, the top end of spiral vanes will be inserted into the accumulated layer of heavy phase. By this step, the drum and spiral impeller are rotating with high speed in the same direction, having differential speed value to some extent. And the relative revolution difference is making grain of heavy phase move to the material exit on the small end while the liquid of light phase is forming into passage, flowing to the exit of liquid phase. The overflowing mouth position of liquid phase is controlled by the regulating plate.

GN Solids Control is one of the leading manufacture for decanter centrifuge in China. Please contact us freely


written by GN Shale Shaker \\ tags: ,

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