Sep 14

GN designed centrifuge mud tank for oilfield and dredging project, with 1 unit of GNLW553VFD decanter centrifuge(or other model available) and Nemo pump to feed the centrifuge, the centrifuge tank is divided into 2 compartment, the mud after treated by shale shaker, desander/desilter flow or be pumped to compartment 1, then Nemo pumppumped it from the compartment 1 to the centrifuge for processing, the clean drilling mud dropped into compartment 2, which can be pumped to other application or flow to anywhere required.

centrifuge mud tank

centrifuge mud tank

In oilfield application, sometimes mud hopper unit also installed on centrifuge mud tank, the mud which will be feed to centrifuge is with solids smaller than 20 microns, it has been separated by desilter cone. After treated by decanter centrifuge, the max solids remained in the drilling fluids is smaller than 5 microns, it is called “clean mud”. The clean mud may be weighted in pill tank/compartment and mixed by mud mixing hopper & mixing pump.

In Dredging project, centrifuge mud tank is applied after dredging slurry separation system, after treated by the desander ( or sometimes desilter), the solids remained in the slurry may be too fine to be separated out by the centrifuge, so you need a flocculation tank before centrifuge mud tank. After flocculation, the mud is concentrate so It is easy for centrifuge to separate it, this is for better performance. So you have to use a positive displacement pump to pump the flocculated mud to centrifuge, otherwise the centrifugal pump will break it off. Sometimes filter press will replace the centrifuge, but efficiency of filter press is not so dissatisfied, so people use large treating capacity centrifuge instead.

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written by GN solids Control \\ tags: , , , , , , , , , , ,

Jul 17

What is Dredger?

Simply speaking, Dredger (Also called dredge) isa vessel used for dredging. It is used to excavate and remove material from the bottom of a body of water. For example, a scoop attached to the end of a rope or pole by which a man can draw sediments up from the bottom of a pond is a dredger. Developing this idea further, a motorized crane equipped with a drag bucket or clamshell (grabber) that is used to scoop material from the bottom of a body of water is also a dredger. The crane could be located on the bank, or perhaps mounted on a barge. If the crane is mounted on a barge, the entire vessel is referred to as a dredger.

Dredge slurry separation system

Dredge slurry separation system

What is Dredging?

Dredging is an excavation activity in which materials are recovered from beneath the water’s surface. The purpose is generally to gather bottom sediment and either dispose it at a different location or use these sediments in various products, e.g. sand and gravel is used in concrete mixtures.

GN solids control design and produce dredging slurry separation system, and we cooperate with dredger manufacturer all of the world. Some of our DSS system has worked successfully in the site with dredger.

Here we listed top 5 Dredger manufacturer, welcome to contact us for more updates.

1 IMS Dredges, Division of LWT, LLC( website: http://www.imsdredge.com/),

2 Ellicott® Dredges

3 Crisafulli Dredges(www.crisafulli.com)

4 VMI Dredger, to see How do VMI dredges work, pls check http://www.vmi-dredges.com/how-dredges-work.htm

5 DSC Dredge(http://www.dscdredge.com/)

If you need dredger and dredge slurry separation system, pls contact GN solids control.

written by GN solids Control \\ tags: , , , , , ,

Jun 22

What is slurry pump?

A Slurry pump is a type of centrifugal pump in physics principle that increases the pressure of liquid and solid particle mixture, through centrifugal force (a rotating impeller) and converts electrical energy into slurry potential and kinetic energy.

slurry pump

slurry pump

There are 2 kinds of slurry pump, horizontal type and vertical type, for vertical type pump, there are submersible slurry pump and underwater pump. Submersible slurry pump is widely used for drilling fluids transferring, underwater pump is used for fluids transfer. Horizontal slurry pump is also used for drilling slurry transfer, just the installation method is different to meet different mud tank size.

What is vertical slurry pump?

Vertical slurry Pump is the cantilever pump structure of single stage and single suction, with the bearing housing, supporting, intermediate pipe connecting the pump hydraulic components, the water is discharged out from the drain pipe parts, pump impeller is for semi-shrouded with the agitating vane on the vane extended, the main characteristic of this pump is the underwater pump shaft parts have enough rigidity, the impeller and pump shell have no bearings, no shaft seal, which can transport the greater medium of solid particles. The length of inserting the water by pump is between 800 and 2000, the suction pipe can be matched in case of need. Continue reading »

written by GN solids Control \\ tags: , , , , , , , ,