rCB Refinery System
From raw pyrolysis char to specification-grade recovered carbon black.
What it is
Raw pyrolysis char has limited commercial value on its own. Gangjin's rCB Refinery System upgrades it into specification-grade Recovered Carbon Black (rCB) — a sustainable alternative to virgin carbon black — through a proprietary 7-stage process. Recognized under the ASTM category for recovered materials, our rCB meets commercial buyer specifications for rubber, plastics, and industrial applications.
Refinery Process
7-Stage
Continuous Throughput (2 parallel lines)
~2.0t/h
Output Moisture
< 1wt%
Process Flow
Discharge & Cooling
Discharge & Cooling
Water-cooled jacketed screw conveyors; chars cooled to safe handling temperature
Screening
Screening
Vibrating screen (<4mm cut); removes oversized particles and foreign material
Magnetic Separation
Magnetic Separation
Dual-stage: 4,500G permanent magnet + 12,000G drawer iron remover
Fine Milling
Fine Milling
185kW ball mill + 5-head dynamic classifier; closed-loop regrinding
Pelletizing
Pelletizing
110kW Pin Mixer (SUS304); ionized water only — no bonding agents
Drying & Cooling
Drying & Cooling
Rotary kiln dryer (2.81MW) to <1wt% moisture; cooled to ambient
Packaging
Packaging
Automated FIBC packing; 1-ton bulk bags; quality check
Output Spec
Output Product Specification
Form
Pelletized(or powder)
Moisture
< 1wt%
Packaging
1-ton FIBC bulk bags
Quality Std.
ASTM-grade filler spec
Available rCB Fineness Ranges
| Coarse | >150 µm |
|---|---|
| Medium | 75–150 µm |
| Fine | 45–75 µm |
| Very Fine | 15–45 µm |
| Ultrafine | 5–15 µm |
| Specialty | <5 µm |
Particle size ranges are indicative. ASTM N-series equivalency is not implied and must be verified through product testing.
Technology & Engineering
Patent-Protected Technology
Registered rCB refinery system + mixing pin design
No Binder
Pelletizing
Ionized water only; no chemical contamination
Precision
Grading
Closed-loop milling & classification for consistent, spec-grade output
International
Standards
Engineered to ASME / CE; ATEX Zone 21 provisions for rCB silos