Decanter Centrifuge for Silicon Carbide Slurry Separation

The Decanter Centrifuge for Silicon Carbide Slurry Separation is designed for continuous solid-liquid separation, silicon carbide recovery, slurry thickening, and process-water clarification in silicon carbide powder production, wafer cutting slurry treatment, grinding wastewater recovery, and abrasive material processing.

Silicon carbide slurry is usually dense, highly abrasive, and may contain fine particles, cooling water, cutting fluid, additives, or mixed mineral solids. The decanter centrifuge separates and concentrates SiC solids continuously while producing clarified liquid for recycle, further treatment, or discharge polishing.

Because silicon carbide has strong abrasive properties, the machine can be configured with enhanced wear protection for the feed zone, scroll conveyor, solids discharge area, and bowl cone.

• Silicon carbide powder washing and recovery
• SiC grinding and classification slurry treatment
• Wafer cutting slurry recovery
• Abrasive powder production wastewater
• Silicon carbide polishing slurry separation
• Process-water clarification and recycle
• Fine SiC recovery from settling tank overflow
• Slurry thickening before filter press or drying
• Recovered abrasive material handling
• Mineral and ceramic abrasive slurry treatment

Peony provides continuous solid-liquid separation for silicon carbide grinding, washing, classification, and wastewater recovery lines.

SiC Grinding / Washing / Classification → Slurry Tank → Optional Polymer Dosing → Decanter Centrifuge → Thickened SiC Solids → Filter Press / Dryer / Screening / Storage

Clarified Liquid → Process Water Tank → Recycle to Grinding, Washing, or Slurry Preparation

Peony can provide:

• Decanter centrifuge selected for SiC particle size and abrasion level
• Agitated slurry buffer tank and controlled feed pump
• Optional polymer dosing system for fine-particle recovery
• Adjustable differential speed and pond depth control
• Tungsten carbide, ceramic, or hardfacing wear protection
• Clarified-water collection and recycle connection
• PLC and VFD automatic control system
• Connection to filter press, dryer, storage, or wastewater treatment system

Abrasion Level

Silicon carbide can rapidly wear the feed zone, scroll flights, cone section, solids outlet, and slurry pipe elbows. Wear protection should be selected according to SiC particle size, hardness, solids concentration, and operating hours.

Particle Size

Coarse SiC particles usually settle well. Fine or ultra-fine silicon carbide may require longer residence time, higher centrifugal force, polymer conditioning, or downstream polishing filtration.

Feed Stability

An agitated buffer tank and controlled feed pump are recommended to avoid sudden solids concentration changes and improve separation consistency.

Required Final Moisture

A decanter centrifuge is mainly used for continuous thickening and dewatering. When low final moisture is required, it is normally combined with a filter press, vacuum filter, centrifuge dryer, or thermal dryer.

Clarified Liquid Quality

When the recovered liquid will be reused in high-precision grinding or wafer processing, additional polishing filtration, settling, membrane filtration, or chemical treatment may be needed.

Continuous Silicon Carbide Recovery

The centrifuge continuously separates silicon carbide solids from water or process liquid. It helps reduce SiC loss from grinding slurry, washing streams, classification overflow, and wastewater.

Wear-Resistant Design for Abrasive Duty

Silicon carbide is highly abrasive. The machine can be equipped with tungsten carbide tiles, hardfacing, ceramic protection, or replaceable wear liners in high-wear areas.

Stable Separation for Variable Slurry Conditions

Feed solids concentration, particle size, viscosity, and flow rate can change during grinding, washing, classification, and slurry preparation. Bowl speed, differential speed, pond depth, and feed rate can be adjusted to maintain stable operation.

Process-Water Recovery

Clarified liquid can be returned to washing, grinding, slurry preparation, cooling-water systems, or further treatment equipment.

Lower Filtration and Drying Load

By thickening the silicon carbide slurry before downstream filtration or drying, the decanter can reduce liquid volume and improve overall process efficiency.

Please provide the following information for a suitable silicon carbide slurry separation solution:

• Silicon carbide type and product grade
• Particle-size distribution and fine-particle content
• Slurry solids concentration and viscosity
• Required processing capacity
• Required SiC recovery rate
• Target solids concentration after centrifugation
• Clarified liquid quality and recycle-water requirement
• Abrasive impurity content or mixed mineral solids
• Polymer or flocculant currently used
• Downstream filter press, dryer, screening, or storage arrangement
• Required material of construction
• Electrical and control standard

Peony welcomes distributor and agent cooperation with silicon carbide producers, abrasive material manufacturers, wafer-processing companies, mineral processing plants, grinding-system contractors, wastewater treatment companies, and industrial separation partners.

We support partners with slurry testing, decanter centrifuge selection, abrasion-resistant configuration, polymer dosing design, process-water recycle integration, installation guidance, commissioning support, spare parts, and after-sales service.

Send us your silicon carbide slurry information, including particle size, solids concentration, required capacity, target recovery rate, clarified-water requirement, abrasive wear condition, and downstream handling arrangement. Our engineering team will recommend a suitable decanter centrifuge solution for your silicon carbide slurry separation process.