Monthly Archives: April 2022

Explosion proof motor starter for hazardous areas

Enclosure is a vital and major component of motor starters. Per jobsite situation, there are“Hazardous” and “Non-Hazardous” areas. Oil and gas drilling is appointed to Hazardous areas, it means the the possibility of the surrounding atmosphere being an explosive gas or dust mixture. Explosion proof is an mandatory demands for motors and motors starters where are used in the areas.

Like shale shaker, mud cleaner, decanter centrifuge, centrifugal pumps, mud agitators which are driving by electrical motors. They must be explosion proof while they are used in oil and gas drilling mud system. But if they are used in non-oil drilling mud system in safety areas, like water well drilling, horizontal directional drilling (HDD), piling, pipe jacking and other underground trenchless activies, they can be non explosion proof.

IP rates

Many people may think EX standard motor and control panel have better protection than Non-Ex, especially for outdoor application. It is wrong. EX motor and control panel is only to ensure the products will not cause explosion in hazardous areas. It is IP protection rates which determines more the electrical products durability. The IP rating is set out in standard IEC EN 60529 and rates electrical enclosures by the level of ingress protection against solids (1st digit) and against liquids (2nd digit). The higher number for each digit, the better the protection against dust and liquid. GN Solids Control is using IP 55 EX motors in drilling mud processing system. And GN Solids Control electrical control systems are made with IP65.

NEMA codes

Mostly, clients will directly say they need explosion proof zone 1 or zone 2 for their equipment. But sometimes, clients may say they want NEMA 7 enclosure. NEMA standards for National Electrical Manufactures Association system. It is recognized across North and South America including Canada. NEMA 7 means for Hazardous locations. Explosion proof enclosure is a must to meet NEMA 7. While people say they need NEMA 7 enclosure for motor starter. They actually need explosion proof motor starter for zone 1 or zone 2. GN Solids Control Flameproof and positive pressurized enclosure for hazardous areas. EX mark must be marked on explosion proof enclosure.

Portable Decanter Centrifuges for Diamond Drilling to Mexico

Engineering geological drilling and mineral exploration are important methods to obtain accurate subsurface geological data. The usual way is to use geological core drilling, use mechanical drilling equipment or tools to drill holes in rock layers or soil layers, and take out core and soil core samples to understand geological conditions or mineral conditions.

In the process of geological drilling, water or bentonite is usually used as drilling fluid. As environmental protection requirements are getting higher and higher, traditional mud pool settlement methods have been unable to meet the requirements of geological drilling mud treatment. For geological drilling mud, GN Solids Control has developed a complete set of processing equipment and solids removal unit for geological drilling mud and mining industry slurry treatment.

2022.04.19 Small Decanter Centrifuge

GN Solids Control has sold big quantity 9 inch mini size decanter centrifuge for mining industry in Canada, USA and Mexico. This weeks, some sets of 9 inch mini centrifuge is ready. After factory commissioning, they will be shipped to a Mexico client.

GNLW223 Series mini side decanter centrifuge is specially designed for high speed, small capacity, small footprint, fine solids separation. It is widely used together with mini size mud cleaner GNZS752 in solids removal unit.

GN Solids Control makes full package compact design solids removal unit for diamond drilling and mining industry. The major separation system of GN solids removal unit is mini size shale shaker and decanter centrifuge. There is a small mixing unit allocated together with the separation equipment. All equipment are controlled by the central control system and allocated on the small mud tank. There are ladders and guardrails around the tank and easy up stairs and down stairs during operation.


GN Solids removal unit is environmentally friendly. It can reach No-Pit drilling. It can reduce the solids weight and recycle the water phase for reuse. So it can reduced the water consumption.

The processing capacity of GN Solids removal unit is 0 ~ 150 LPM. The unit can reduced the drilling fluid consumption over 40% with Shaker, Centrifuge, Pumps, mixing unit, Tanks and Generators (Optional) .

The 2-phase Decanter centrifuge and 3-phase disc centrifuge for oil sludge separation

Decanter centrifuge and disc centrifuge are widely used at oil sludge separation and waste water treatment. Especially in oil sludge separation system, decanter centrifuge and disc centrifuge are normally used together for 2-phase and 3-phase separation.

The decanter centrifuge is a kind of decanter discharge sedimentation centrifuge. After the liquid material enters into the decanter centrifuge via feeding pipe, the blades on the screw propeller push the solid phase in the material to the slag discharge port at the small end of the centrifuge bowl and discharge, and the liquid phase overflows through the overflow holes at the large end of the bowl. This process is repeated continuously to achieve the purpose of continuous separation.

2022.04.11 Centrifuge Unit

Decanter centrifuge is widely used at drilling mud treatment solids control system and drilling waste management system. The decanter centrifuge can be used for barite recovery and fine solids separation.

A disc centrifuge is a type of vertical centrifuge. The bowl of the disc centrifuge is installed on the upper end of the vertical shaft, and is driven by a motor to rotate at a high speed through a transmission device. Inside the drum, there is a set of disc-shaped parts that are nested together, it is called discs.

Below are the two major application conditions for disc centrifuges:
1. Liquid-solid separation (ie, the separation of the bottom concentration suspension), called clarification.
2. Liquid-liquid separation (or liquid-liquid-solid) separation (ie separation of emulsion), called separation operation.

GN Solids Control makes various sizes of decanter centrifuge and disc centrifuge. And GN Solids Control can make customized centrifuges to suit for clients’ special demands.

Chemical dosing unit are widely used together with centrifuges for ultra fine solids dewatering treatment. Clients can choose liquid chemical or powder chemical, and sometimes clients need to use both liquid chemical and powder chemical to suit for the sludge situation. The GN Solids Control can offer skid mounted chemical dosing unit and containerized chemical dosing unit.

Liquid and solids separation equipment for construction drilling mud treatment to Australia

GN Solids Control has been established for more than 10 years, and has provided complete sets of solid and liquid separation equipment for customers in many countries, including the United States, Canada, Australia,Singapore, Malaysia, Egypt, UAE, Oman, Kuwait, Saudi, India, Indonesia, and so on. Weeks ago, GN Solid Control delivered a complete set of solid and liquid separation equipment for construction mud treatment to an Australian customer. It is not the first one liquid and solids separation unit GN Solids Control exported for Australia.

Australia has higher standard even than European market. There are many special request demanded from Australia clients. GN Solids Control exported over 10 complete sets of waste management system and slurry treatment unit to the market. Every unit is specially designed and made per clients’ request to suit for their demands and applications.

With the rapid development in recent years, the construction mud dewatering treatment system manufactured by GN Solid Control has helped customers successfully recover a large number of valuable materials, save a lot of water resources, improve customers’ economic benefits and meet the requirements of environmental protection.

The liquid and solids separation unit made for the Australia client including follow items:


1. Linear dewatering shale shaker

The linear motion shale shaker is used for dewatering treatment. It is specially designed to separate larger and coarser solid particles. The construction mud enters the shaker screen through the charging funnel to separate large-diameter solids such as large stones. The service life of the screen on this vibrating screen is longer than that of the traditional woven screen.

2. Double-deck mud shale shaker

The liquid phase come from the coarse separation dewateting shale shaker enters the double-layer mud shale shaker GNZS706 again. GNZS706 double-deck shale shaker is a two-stage separation, which enters the bottom layer of the double-layer vibrating screen first. The mesh number of the bottom layer is small, so as to further separate coarse particles. The mesh number of the upper screen is high, and the liquid phase passing through the lower screen enters the upper screen again, and the effect is better.


3. 3-1 desander and desilter mud cleaner. It is a combination of drilling mud shale shaker, desander and desilter separator.

4. Decanter centrifuge for fine solids separation.

5. Chemical dosing unit to using together with decanter centrifuge for dewatering treatment.

Automatic Mud Tank Cleaning Unit for Offshore Drilling Platform

GN Solids Control can make automatic mud tank cleaning system for onshore and offshore applications. The automatic mud tank tank cleaning system is used together with high pressure wash gun. The high pressure wash gun is used to wash mud tanks, the automatic mud tank cleaning system is to separate the waste slurry and reuse the water to clean mud tanks again.

2022.04.07 Tank Cleaning Unit

The normal design GN automatic tank cleaning system is mounted on a skid for easy movement. This week, GN Solids Control finished a customized tank cleaning system for offshore platform. Compared with onshore tank cleaning system, the unit for offshore is customized design, it is composed of separate small modular for easy lifting. Below are the major separation modular of the offshore automatic tank cleaning system.

1: Automatic high pressure wash gun modular to flush and clean mud tanks.

2: The suction unit to suck the waste slurry which is generated from tank cleaning.

3: Waste slurry separation modular to separate the liquid and solids inside the waste slurry.

4: The storage and transfer modular.

5: the solids skips to collect drill cuttings and transfer to other places. The solids skips are equipped with covers. There are rubber sealing on the covers. During shipment, the solids skips can be locked and sealed to avoid leakage. It is widely used for solids waste and hazardous material transfer.

2022.04.07 Mud Skip Offshore

Besides automatic mud tank tank cleaning system for onshore and offshore, GN Solids Control is also capable to make other waste management separation equipment, like waste water treatment unit for oil and non-oil slurry treatment.

GN Solids Control can also make drilling cuttings treatment system to make water base mud and oil base mud and cuttings. After separation, some clients may want to recover as more drilling mud as possible for reuse. Or they want to separate the liquid and solids and to reduce the total waste. According to clients separation demands, GN Solids Control will offer various solution.