GN Shaker Screen is a subcompany of GN solids control which is API Q1 certified company.
GN Hydrovac Slurry Treating System
GN Solids Control is a liquid and solid separation solution provider. GN Solids Control is especially good at providing turnkey solutions to suit different customers’ treating demands. These years, there are more and more inquires come to GN and ask for hydrovac slurry treating solution.
GN Solids Control has provided multiple units in North America includes USA and Canada, by using GN hydrovac slurry treating systems, customers can treat 10~40 hydrovac truckloads evereryday.
Here are the main treating equipment in GN Hydrovac Slurry Treating System:
1. GN Hi-Cap Shaker
GN Hi-Cap shaker is the first treating unit that treat all the loaded slurry from GN feeding hopper. Actually, in order to treat 2 truckloads at the same time, GN Solids Control provided a customized feeding hopper to collect hydrovac slurry first. GN Hi-cap shaker is used to eliminated those larger solids/ stones/ wastes in the hydrovac slurry.
2. GN Finer Shaker
Here GN Solids Control provides a double deck shaker to treat the slurry discharged from GN hi-cap shaker.
3. GN Deilster
GN desiter is shaker fixed with 4inch hydrocyclones, which can be used to eliminate solids larger than 25 microns. Both GN shaker and GN disilter can be assembled with GN ViST unit to recover more drilling fluids and get much dryer solids. 
4. GN Decanter Centrifuge
GN decanter centrifuge is the key treating equipment to eliminate most of those solids out. A chemical dosing unit will also be used to help removal finer solids. In order to treat hydrovac slurry well, GN Solids engineers modify the centrifuges to work with larger treating flow and better separating performance. 
5. GN Mud Tank
All those treating equipment mentioned above are fixed on GN mud tank. Recover solids can be used for construction materials, and recovered water can be used for hydrovac trucks or can be further treated to drink water.
GN Oil Sludge System Working Process A
GN Oil Sludge System Working Process
Oil sludge in the V-Tank is separated by gravity into different layers after mixed by the bottom screw conveyor, the top floating oil (large portion) is transferred by a diaphragm pump into #2 oil surge tank, and the left small portion oil is feed into afterwards shaker shaker by centrifugal pump to finish the first phase separating.
GN Shale shaker can separate out most of those large solids, liquid is feed into #1 GN Decanter Centrifuge by screw pump where the second phase separating is achieved.
Solids treated by GN Centrifuge fall into the bottom tank of #1 centrifuge and diluted a second time. And liquid goes to #4 Centrifuge and Disc-Centrifuge Treating Unit’s Tank. Slurry in #1 centrifuge tank is transferred by #2 screw pump and feed into #2 Centrifuge to further separate: solids are collected by a GN cuttings box; liquid is fall into #2 Centrifuge tank, a inline pump is used to feed it into #1 Disc-Centrifuge where solids, oil and water is treated at the first time: oil goes to #5 unit’s #1 oil surge tank; water goes to #5 unit’s #1 water surge tank; solids discharge to the outside.
Slurry in #2 oil surge tank of #5 unit is feed into #2 Disc-Centrifuge by inline pump: oil goes to 1#oil surge tank; water goes to 1#water surge tank; solids discharge to the outside. 
Slurry in 1#water surge tank of #2 unit is feed into #6 GN gravity oil/water separator by inline pump: oil goes to #6 unit’s #3 oil surge tank, water goes to 6# unit’s #2 water surge tank and then feed by another inline pump to #7 micro bubble treating unit: clean water goes to #7 unit’s water tank, provide recycled clean water for this whole system; oil goes to 3#oil surge tank of #6 unit. A oil pump is fixed on #3 oil surge tank, in case the oil is not clean enough, oil pump can transfer back to #2 oil surge tank, and then treated in 2#GN disc-centrifuge again until reach the final treating demands.
GN 9inch Centrifuge Used For Aluminum Oxide Slurry
GN Solids Control manufactures different sizes of decanter centrifuges. GN 9inch bowl centrifuges are largely used in small volume slurry treating, such as the chemical slurry, pharmacy slurry, diamond drilling slurry etc. 
There are hundreds sets of GN 9 inch centrifuges working in USA and Canada. Several weeks ago, GN Solids Control provide 6 sets to a USA customer. This customer will use GN centrifuge to treat Aluminum Oxide Slurry.
The Aluminum Oxide slurry solids content is around 8% to 10%, customer would like to thickening the slurry into 60% to 80%. By using a chemical mixing tank with a GN mud agitator, the solids Aluminum Oxide Slurry is mixed with water first. Then it is feed into GN 9 inch bowl centrifuge by using GN screw pump.
In order to eliminate those finer solids, GN chemical dosing unit is also used. Sometime, customers might not want to use chemical dosing unit due to environment protection rules, because using chemicals might cause pollution. One GN Slant Plate Clarifier might be used after the slurry treated by GN decanter centrifuge.
GN 9 inch centrifuge has 2 models: variable speed and fix speed. GN 9 inch centrifuge is mainly including the following components: rotating bowl, screw conveyor, centrifuge frame and driven motors. Some customer also purchase GN centrifuge rotating assembly (rotating bowl and screw propeller) to modify by themselves. GN 9inch centrifuge now has 2 version, the D version is fixed by only one driven motor while the E version is fixed with 2 driven motors. 
GN Solids America LLC is located in Houston, TX. GN has several 9 inch centrifuges in stock as well the other models such as 14inch centrifuge. GN Solids Control centrifuge has a wide usage for different slurry separation. Please feel free to connect with GN sales for your decanter centrifuge usage.
