Month: November 2022

GN mining vibrating screen, shale shaker and decanter centrifuge, desilter cleaner are used for Australia construction mud treatment. The construction mud treatment system including:

Mining vibrating shaker , the function is to separate stones, construction waste, branches, etc., so that big solids will not be feed to further process and block the equipments.

The high frequency fine vibrating screen, the function is to separate the coarse solids and reduce solids content. The composite material frame shaker screen is used to separate the coarse solids from to construction mud. We can produce different API mesh size screen from API 20 to API 325 according to your requirement. The high frequency fine vibrating screen is designed for classification, separation and dewatering application of wet or dry screening.

Desilter mud cleaner, the function is to separate the fine solids from the construction mud, the separation cut point is 15~40 microns. The qty of desilter cone depends on required treating capacity. The bottom shaker installed composite material frame shaker screen for drying the discharged solids and recycle more useful fluids.

Decanter centrifuge, the function is to separate the fine solids cut point 2~5 microns, working with flocculants from chemical dosing unit, most of the ultra fine solids can be separated out, the recovery water can be reused or sent to waste water treatment plant for further treatment. The previous separation has separated most of the coarse solids and reduce solids content to proper content so that the centrifuge can work properly without blocking the screw.
The solids discharged from mining vibration shale shaker, high frequency fine vibrating screen shaker, desilter mud cleaner, decanter centrifuge can be collected by waste collection box and easily transported to other place. If you need a customized construction mud treatment plant, pls contact with GN solids control.

Recently one batch of GN new type J version solids control shale shakers are ready for shipment to overseas client.
The features of new type J version solids control shale shakers as below:

The bottom sealing rubber adopts new patent technology, convenient to replace, wear resistant polyurethane rubber strip wit good sealing effect and longer working life.

It can meet the requirement of drilling fluids shale shaker and mud cleaner with spill proof cover for option.
It meets the requirement of shale shaker installed ViST vacuum unit for option, to change the shale shaker to negative pressure shaker.
It is convenient to adjust the shaker deck angle, after angle adjustment, it can be locked to avoid loose.

the shale shaker stainless steel deck bottom rubber support system, to meet the long time anticorrosion for offshore drilling.

High strength imported famous brand spring, with good performance and longer working life.
The shaker screens installed on the shaker and mud cleaner is 585x1165mm composite material shaker screen, the total screen area is 2.73m2, 2ea of Italy Oil brand vibration motor drived the shale shaker and generates max 7.5 G force. During the transportation period, the shale shaker is locked by locking bolt to protect the shaker deck, once arrived at the jobsite, the locking bolt should be removed before start.

The different qty of desander cone and desilter cones assembly are installed on the mud cleaner as 2nd phase separation and 3rd phase separation. The bottom shaker model of mud cleaner is same with shale shaker.
Except for 4 panel shale shaker, we also produce 3 panels shale shaker, 2 panel shale shaker, double deck shale shaker, high G drying shaker, tandem shale shaker, etc., if you need a solids control shale shaker, pls contact with GN solids control.

One batch of mineral exploration core drilling decanter centrifuge package are ready for shipment to Europe client.

The core drilling centrifuge GNLW223 is installed on top of fluids collection box, if the user can confirm the coarse solids has been separated out before feeding to the decanter centrifuge, they can feed the waste slurry to decanter centrifuge directly, the fine solids are separated out from decanter centrifuge, the fluids dropped into the collection tank which can be reused for drilling directly or mixed with chemical additives to be reused for drilling rig.

The 9 inch mini decanter centrifuge has been widely used for mineral exploration core drilling for water recovery. The purpose to use the core drilling decanter centrifuge is for environmental protection, more water recovery, less water consumption, less drilling cost, reduce cost for waste treatment. The model number is GNLW223D and GNLW224E-VFD, the max treating capacity for water is 130L/min, for slurry treating capacity, it is up to 100L/min. The bowl diameter is 9 inch (220mm), max bowl speed is up to 4500rpm, typical bowl speed is 3800rpm, max G force is 2492G, typical G force is 1777G, main motor power is 11KW, gearbox torque is 500 N.M. If VFD decanter centrifuge is required, for example, to use in high mountain condition, we can use a VFD control panel with the decanter centrifuge.
If the solids content is high and remained coarse solids in the waste slurry, a shale shaker is suggested to use before decanter centrifuge. GN designed solids removal unit including picking up pump, mini shale shaker, mini decanter centrifuge with feeding pump, mixing hopper with mixing pump, mud tank and control system. As per requirement, the generator can be installed on the tank skid.
If you need a core drilling centrifuge, pls contact with GN solids control.

GN designed 3 phase decanter centrifuge is mainly used for oil sludge treatment, slop oil treatment and other solids liquid liquid three phase separation, which consists of driving system, bowl assy, collection box, screw conveyor, centrifuge skid and VFD control panel.

The working principal of three phase decanter centrifuge is as below:
The 3 phase separation is based on different specific gravity and the difference should be obvious, , the solids, oil and water with different specific gravity, it is the basic pre-condition for performance well. With different specific gravity, the centrifugal force is different. The solids phase with large specific gravity and largest centrifugal force, the heavy liquid phase water with smaller specific gravity and smaller centrifugal force, the light liquid phase oil with smallest specific gravity and smallest centrifugal force. The centrifugal force becomes less from outside to inside and formed a solids layer and two liquid layers. The screw propeller is pushing the solids to small end solids discharge port, the 2 phase liquids are removed from heavy liquid outlet and light liquid outlet.
The bowl is made of duplex stainless steel SS2205, the screw conveyor material is also duplex stainless steel SS2205. The solids discharge port and liquid distribution nozzle are all protected by tungsten carbide insert. The screw conveyor is protected by tungsten carbide tiles and it is repairable. The main motor, back drive motor and pump motor 3 VFD drive installed inside the VFD control cabinet for frequency adjustment.
A pre-treatment equipment should be used to ensure the feeding material with solids content less than 10% and solids particle size should be smaller than 2mm. The 3 phase decanter centrifuge will be installed on top of mud tank. A separate bearing lubrication system is adopted for big model 3 phase decanter centrifuge, which will improve the working life of bearing.