HYDRAULIC DRIVE MUD CENTRIFUGE AND CUTTINGS DRYER FOR ASIA CLIENT

GN SOLIDS CONTROL recently has successfully shipped a full hydraulic drive decanter centrifuge and a vertical cuttings dryer to Asian customers. Both equipment address specific operational challenges in drilling fluid management and cuttings processing.

Unlike electrically driven units, GN’s hydraulic drive decanter centrifuge uses two independent hydraulic circuits to drive the bowl and the scroll conveyor separately. The hydraulic pump unit which driven by a single electric motor, feeds each circuit with its own pump and control system. Bowl speed and differential speed can be adjusted independently and continuously during operation, providing flexibility when processing variable mud weights or encountering changing downhole conditions.

The vertical cuttings dryer delivered alongside the centrifuge is designed specifically for drilled cuttings from oil-based and synthetic-based mud systems. Operating at 900 RPM, the unit generates 420 G of centrifugal force to separate liquid from solids. The stainless steel screen bowl retains the cuttings while allowing fluid to pass through the screen openings. Angled flights attached to the cone, rotating slightly slower than the bowl, extract the dried cuttings. Tungsten carbide hardfacing on the flights achieves HRC 65 hardness, significantly extending service life compared to conventional wear protection.

The delivery to Asian clients reflects growing recognition that properly specified solids control equipment—whether hydraulic drive centrifuges for demanding mud conditions or vertical dryers for efficient cuttings discharge—can improve fluid economics and reduce waste handling costs.

GN Potato Slices Flushing Water Starch Separation Centrifuge Gains Popularity Among Domestic Food Processing Plants

GN Special Centrifuge Realizes Efficient Starch Recovery from Potato Rinsing Wastewater, Empowering Domestic Potato Deep Processing Enterprises with Circular Economy Upgrade
July 3, 2026 – With increasingly stringent environmental protection requirements and rising raw material costs in China’s food processing sector, potato chip and french fry manufacturers are facing prominent problems of starch loss in slicing rinsing wastewater, high sewage treatment expenses and resource waste. Against this backdrop, the potato slices flushing water starch separation centrifuge independently developed and manufactured by GN Separation has been widely recognized and applied by numerous domestic food factories, delivering remarkable economic and environmental benefits for potato deep processing production lines.
In conventional potato processing workflows, large quantities of free starch dissolve into rinsing water after potato peeling, slicing and cleaning. Direct drainage not only increases organic pollutant load and wastewater treatment pressure for factories, but also results in massive wasted recoverable starch resources. Tailored to the physical properties of potato starch slurry, GN’s dedicated starch separation centrifuge adopts food-grade 304 stainless steel for all material contact components, fully complying with national food hygiene and production specifications. Equipped with complete CIP online automatic cleaning system, the unit effectively prevents material residue, bacterial reproduction and cross-contamination during long-term continuous food-grade production.
Based on high-speed centrifugal sedimentation principle, GN centrifuge continuously and automatically separates solid starch particles from potato slice flushing wastewater. Concentrated starch slurry separated out can go through subsequent dehydration, drying procedures for internal reuse in production or external sales as by-product to generate extra revenue. Meanwhile, clarified treated water can be recycled back to potato peeling, slicing and rinsing stations, cutting factory fresh water consumption by 30%~50%. Compared with traditional sedimentation tank and hydrocyclone separation processes, GN equipment features higher starch recovery rate (stable above 92% in field operation), smaller footprint, fully automatic unattended continuous operation, stronger adaptability to fluctuating wastewater flow and starch concentration, and more stable long-term separation performance.
Up to now, GN’s potato rinsing water starch separation centrifuges have been installed and put into stable operation in batches at many large, medium and small food processing plants located in major potato producing regions including Shandong, Henan and Inner Mongolia. End customers reported that the equipment helps them reduce sewage charges, lower water procurement costs and create incremental income from recovered starch, comprehensively lifting the overall profit level of potato deep processing projects.
Industry analysts commented that under the trend of energy conservation, emission reduction and resource recycling transformation in the food industry, GN customized separation equipment targeting potato processing wastewater starch recovery will become standard supporting configuration for newly-built and renovated potato chip and french fry production lines. Relying on independent technical advantages and mature on-site application experience, GN Separation will continue to launch targeted solid-liquid separation solutions for various food processing segments, facilitating the high-quality, low-carbon and circular development of domestic food manufacturing industry.

WHY GN DECANTER CENTRIFUGE DELIVERS RELIABLE SOLIDS CONTROL Control PERFORMANCE

For drilling contractors and mud service companies, selecting a decanter centrifuge involves more than comparing specifications on paper. The real question is whether the equipment will perform consistently under variable complex conditions, and remain serviceable over multiple campaigns. GN SOLIDS CONTROL designs its decanter centrifuges with these operational realities as the starting point.

The GNLW series covers bowl diameters from 9 inches to 30 inches, accommodating applications ranging from barite recovery to fine solids separation and dewatering. Every model maintains a bowl length-to-diameter ratio exceeding 3.0—a geometric parameter that directly influences residence time and separation efficiency. This ratio, combined with variable frequency drive (VFD) control, allows operators to adjust bowl and differential speeds to match changing feed conditions, whether processing weighted drilling fluid or high-volume tunnel boring slurry.

Material selection distinguishes our centrifuge from conventional designs. The bowl cylindrical and conical sections are manufactured from Duplex Stainless Steel 2304 via centrifugal casting, a process that ensures dense, homogeneous metallurgy with excellent resistance to chloride-induced corrosion and stress cracking. Other bowl assembly components utilize SS304 stainless steel. These material choices are not arbitrary; they are specified to endure prolonged contact with saline formation fluids and chemically treated mud systems.

Wear protection follows the same engineering discipline. Tungsten carbide tiles shield the screw conveyor at critical wear points, while the flow distribution port and solids discharge port are similarly protected by tungsten carbide alloy. These sacrificial wear surfaces extend service intervals and reduce downtime for refurbishment. The liquid discharge weir height is adjustable, providing process flexibility without requiring mechanical modification.

The bowl assembly incorporates a tighten belt support system that protects bearings during transport and operation. Genuine SKF bearings are specified throughout, supported by an automatic lubrication system. The pressurized, explosion-proof VFD control cabinet, fully PLC-controlled, provides consistent power management and process monitoring. This combination of metallurgical integrity, targeted wear protection, and intelligent control delivers the operational predictability that field crews depend on.

GNLW554 Decanter Centrifuge Upgrades Overseas Wastewater Sludge Treatment System

GN Separation has successfully delivered theGNLW554 sludge dewatering decanter centrifuge to an overseas municipal wastewater treatment plant, helping the client complete the upgrading of its outdated sludge dewatering system.
Facing long-standing operational pain points including low dewatering efficiency, unstable sludge cake dryness, high chemical consumption and frequent manual maintenance with their traditional dewatering equipment, the overseas client decided to introduce high-efficiency centrifugal separation technology to optimize the whole sludge treatment process. After strict technical evaluation and solution comparison, the reliable and energy-saving GNLW554 decanter centrifuge was finally selected as the core upgrading equipment.
Adopting advanced horizontal spiral centrifugal separation principle, the GNLW554 decanter centrifuge realizes fully automatic, continuous 24-hour sludge dewatering. Different from conventional filter-type equipment, it features totally enclosed operation, effectively reducing odor emission and improving on-site working environment. Equipped with independent dual VFD control system, the machine can flexibly adjust rotating speed and differential speed according to real-time sludge inlet conditions, ensuring stable separation effect even with fluctuating sludge concentration.
With optimized rotor structure and high separation factor design, the GNLW554 model significantly reduces the moisture content of discharged sludge cake, greatly cutting sludge volume and lowering subsequent transportation and disposal costs. Key components in contact with materials are made of high corrosion-resistant duplex stainless steel, and the screw impeller is protected by durable tungsten carbide wear-resistant layers, adapting to long-term harsh working conditions of complex sewage and ensuring long service life and low operation failure rate.
After the equipment arrives at the overseas site, GN’s professional international after-sales team will provide one-stop services including on-site installation guidance, commissioning, parameter optimization and operator training to ensure fast and stable commissioning.
This overseas project fully verifies the excellent performance and strong environmental adaptability of GN sludge dewatering centrifuges. It further expands GN’s overseas market share in municipal wastewater treatment and continues to empower global environmental protection upgrading with high-quality Chinese-made separation equipment.

High-Capacity GNLS3661 Linear Vibrating Screen Serves Domestic Mineral Processing Project

GN Separation has completed manufacturing and official delivery of the GNLS3661 large linear vibrating screen, which will be applied to the production line renovation project of a large domestic mining enterprise. This equipment is specially customized for high-volume mineral screening and grading, aiming to solve the client’s long-standing problems of low screening efficiency and easy screen blockage.
In modern mineral processing operations, stable and high-precision particle classification directly determines the overall beneficiation capacity and finished product quality. Traditional screening equipment often fails to meet production demands due to limited processing capacity and insufficient structural stability under long-term high-load operation. To optimize ore grading efficiency and increase annual output, the customer chose GNLS series heavy-duty linear vibrating screen after multiple industry investigations and technical comparisons.
The GNLS3661 linear vibrating screen adopts an upgraded heavy-duty box-type vibration exciter, which provides stable and powerful vibration force with low failure rate. The whole machine features an integral riveted structure without welding stress, greatly improving structural toughness and fatigue resistance. Even under continuous impact of hard ore and long-time high-frequency vibration, the equipment can maintain stable operation without deformation or damage.
Designed with a large screening area and reasonable stroke configuration, this vibrating screen realizes high-throughput material classification, effectively removing fine mud and impurities from raw ore, and accurately grading mineral particles according to process requirements. It greatly reduces the pressure of downstream crushing and beneficiation equipment, improves the overall utilization rate of raw ore, and effectively reduces production and maintenance costs.
In addition, the equipment supports flexible adjustment of vibration frequency and screen inclination angle to adapt to different ore particle sizes and processing conditions. The modular screen panel structure is easy to disassemble and replace, which greatly saves later maintenance time and improves production continuity.
GN Separation will provide full-process technical support including on-site installation guidance, equipment commissioning and operational training. The successful delivery of GNLS3661 large linear vibrating screen once again proves GN’s professional strength in customized heavy-duty screening equipment for the mining industry, helping domestic mining enterprises achieve efficient, stable and intelligent production upgrading.