How to Install a Carbon Black Classification Production Line

Based on the turnkey engineering standards of https://www.rcb-mill.com, this article provides a full standardized installation workflow for integrated recycled carbon black (rCB) grinding & classification production lines. The complete installation covers pre-site preparation, mechanical assembly, air pipeline layout, electrical & PLC integration, anti-contamination sealing, staged commissioning, safety verification and final handover. Strict execution of each step ensures stable classification fineness, zero dust leakage, low metal contamination and long-term continuous operation of the rCB line.

1. Pre-Installation Site Preparation & Civil Foundation Acceptance

Installation can only start after qualified civil construction, which is the foundation to avoid vibration deviation and equipment tilting.

1.1 Review Technical Drawings & Site Survey

• Confirm factory floor load, workshop height, reserved lifting holes, raw material/finished silo area, exhaust outlet position and power distribution room location against civil foundation drawings provided by rcb-mill.com.
• Mark center lines, elevation lines and anchor bolt positions of all equipment on the ground; unify the horizontal benchmark for the whole line.
• Check auxiliary supporting conditions: 380V/415V industrial power, compressed air supply, drainage channel, explosion-proof lighting and fire-fighting layout.

1.2 Civil Foundation Acceptance Standard

1. Concrete foundation strength reaches C30 or above; flatness error ≤2mm/m, horizontal deviation of equipment base ≤0.5/1000.
2. Anchor bolt pre-buried holes reserved for mill host, classifier, cyclone and induced draft fan; reserve vibration isolation cushion space for high-speed rotating equipment.
3. Separate vibration isolation foundation for main grinding host and fan to prevent resonance that disturbs classification precision.
4. Set up anti-dust slope and waste residue collection ditch around all equipment to avoid accumulated carbon black powder.

1.3 Equipment Unloading & On-Site Storage

• Unload modular skid-mounted units first; store wear-resistant liners, ceramic tiles, PTFE filter cartridges and electrical control cabinets in dry closed warehouse to avoid moisture and contamination.
• Classify components by process module (pretreatment, grinding-classification, dust collection, packaging) to reduce assembly confusion.
• Prepare dedicated installation tools: level meter, torque wrench, plastic sealing gaskets, anti-static cables, explosion-proof lighting.

2. Modular Mechanical Equipment Sequential Installation

Follow the material flow direction: pretreatment → grinding host → air classifier → cyclone collector → dust collector → finished silo → automatic packaging. All skid-mounted units adopt plug-and-play installation to shorten construction period.

2.1 Front-End Pretreatment Module Installation

1. Install raw material silo, quantitative screw feeder and double-stage high-intensity magnetic separator first; fix vibration isolation springs under magnetic separator to avoid vibration transmission.
2. Assemble vibrating sieve for coarse impurity removal; adjust sieve horizontal balance to prevent material deviation and screen blockage.
3. Install low-temperature drying unit (if equipped), align air inlet/outlet flanges with mill feeding pipeline, and add high-temperature resistant sealing gaskets.

2.2 Core Grinding & Classification Host Installation (Key Step)

1. Hoist the integrated vertical ultrafine mill onto the reserved foundation, place vibration isolation rubber pads between base and concrete, level the host with a precision level meter.
2. Fix anchor bolts symmetrically with cross torque sequence to avoid base deformation; tighten all bolts to manufacturer-specified torque value.
3. Install classifier drive motor, classifier wheel assembly and return material valve; ensure the classifier volute is concentric with mill grinding cavity to prevent airflow bias that widens particle size distribution.
4. Mount grinding roller assembly, high-chromium/ceramic lining; clean all internal metal debris thoroughly to eliminate early-stage iron contamination.
5. Install main drive motor, reducer and elastic coupling; adjust coupling coaxiality error ≤0.1mm to reduce vibration and bearing wear.
6. Connect independent lubrication oil station for main bearing; separate oil chamber from powder cavity with multi-layer oil-proof sealing rings to avoid oil pollution of rCB.

2.3 Air Collection & Dust Removal System Installation

1. Hoist cyclone separators in sequence; fix supporting brackets firmly, ensure verticality of cyclone barrel to avoid uneven powder collection.
2. Install pulse bag dust collector, mount PTFE anti-static filter cartridges, lock all inspection door quick clamps tightly.
3. Install induced draft fan, circulating fan and air volume regulating damper; add silencers at fan outlets and sound insulation covers to control workshop noise below 80dB.
4. Install air-lock rotary valves at all discharge ports of cyclone and dust collector to block external air and guarantee negative pressure circulation.

2.4 Finished Product Storage & Packaging Equipment

1. Seal finished silos with nitrogen protection interfaces; install level gauges and arch-breaking air nozzles.
2. Connect screw conveyor and bucket elevator between cyclone discharge port and finished silo; all pipe joints use PTFE gaskets for full sealing.
3. Install automatic weighing packaging machine, metal detector and finished product conveying platform.

3. Closed Air Circulation Pipeline Installation (Critical for Classification Precision)

The classification system relies on stable negative-pressure airflow; unstandardized pipeline installation causes airflow turbulence and poor fineness control.

1. All pipelines adopt polyurethane inner coating or ceramic tile lining to prevent metal abrasion contamination; pipe elbows (high wear parts) use thickened wear-resistant elbows.
2. Pipeline layout follows straight path as much as possible, reduce right-angle bends to lower air resistance and energy consumption.
3. All flange connections are clamped with double-layer anti-static sealing gaskets; no bare metal gaps exposed to avoid rust falling into powder.
4. Install pressure gauges, temperature sensors and air volume dampers on main air ducts for real-time airflow adjustment.
5. Complete pipeline grounding for every pipe section to eliminate static electricity accumulation, complying with ATEX explosion-proof requirements for carbon black dust.
6. After pipeline assembly, perform air tightness test: close all discharge valves, run fan to maintain negative pressure, check all joints for air leakage with soapy water; repair leakage points completely.

4. Electrical, PLC Control & Instrument Integration

4.1 Power Distribution & VFD Wiring

1. Separate high-power main motor circuit and instrument control circuit; equip independent explosion-proof distribution cabinet.
2. Install variable frequency drives for grinding host, classifier and all fans; lay anti-static shielded cables, do not cross power cables and signal cables.
3. All motors, equipment housings, pipelines and silos connect to unified grounding grid; grounding resistance ≤4Ω for dust explosion prevention.

4.2 Sensor & Interlock Protection Installation

Mount all monitoring sensors to PLC cabinet:

• Bearing temperature sensors on mill main shaft and classifier spindle
• Vibration transmitters on host base and fan bracket
• Pressure differential sensors for dust filter cartridge blockage alarm
• Material level sensors for raw material silo and finished silo
• Overload, over-temperature, over-vibration emergency stop interlock switches

4.3 Central PLC Touch Screen Debugging

Upload standard rCB classification program provided by rcb-mill.com; set automatic start/stop sequence, fault alarm logic and remote access function. Test all interlock protection actions to ensure automatic shutdown under abnormal working conditions.

5. Full-Line Sealing & Anti-Contamination Treatment

Zero contamination must be locked during installation stage:

1. All equipment access doors, manholes, inspection ports use double-layer sealing strips; no gap leakage during negative pressure operation.
2. After internal lining installation, blow clean all grinding cavities, cyclones and pipelines with dry compressed air to remove metal scraps, welding slag and sundries.
3. Replace all iron fasteners inside powder flow channels with stainless steel or nylon bolts.
4. Install online metal detector at finished discharge port to intercept metal impurities in finished rCB.

6. Phased Staged Commissioning (Core Installation Acceptance Step)

Stage 1: Static Inspection & No-Load Single Machine Test

1. Manually turn all rotating parts to confirm no jamming, abnormal friction or collision.
2. Power on single motor point test, verify rotation direction matches marked arrow; reverse wiring immediately if rotation is wrong.
3. Run each equipment separately without materials for 2–4 hours: record motor current, bearing temperature, vibration value, noise. Abnormal vibration or temperature over 70℃ must be rectified before next step.
4. Test lubrication station, cooling system and all alarm sensors to ensure normal feedback signals.

Stage 2: Full-Line No-Load Linked Test

1. Start the whole line according to PLC automatic startup sequence (fan → classifier → grinding host → feeding equipment).
2. Continuous no-load operation for 8 hours; monitor whole-line negative pressure stability, check all pipeline flanges for air leakage.
3. Verify emergency stop, over-temperature, overload interlock protection trigger accurately.

Stage 3: Light-Load Trial Production & Classification Parameter Tuning

1. Feed 20%–30% of rated raw material (pyrolysis char) slowly, run continuously for 4 hours.
2. Collect finished rCB samples, test particle size D97; adjust classifier wheel frequency and fan air volume to hit target fineness (tire-grade D97 ≤10μm).
3. Check powder circulation status: unqualified coarse material returns smoothly to grinding cavity, no pipeline blockage.
4. Test dust collection efficiency; outlet dust concentration must be lower than 10mg/m³ to meet emission standards.

Stage 4: Full-Load 72-Hour Continuous Acceptance Test

1. Raise feeding volume to 100% design capacity, run non-stop for 72 hours.
2. Record key indicators hourly: hourly output, unit energy consumption, finished fineness, iron impurity content, equipment temperature and vibration.
3. Resolve all minor faults, adjust process parameters to stabilize classification performance; ensure iron contamination below 50 ppm.
4. Verify auxiliary systems: nitrogen protection, automatic packaging, waste heat recovery operate synchronously without failure.

7. Safety System Final Inspection Before Handover

1. Check explosion-proof facilities: pressure relief valves on mill and dust collector, nitrogen inert gas injection device, smoke & temperature fire sensors.
2. Confirm all safety guardrails, isolation barriers, warning signs and emergency passages are fully installed.
3. Review fire extinguisher, static grounding and dust explosion prevention configuration compliance with local environmental & safety regulations.

8. Operator Training & Project Handover

1. Factory engineers conduct on-site training covering daily operation, classification parameter adjustment, routine maintenance, wear parts replacement and fault troubleshooting.
2. Deliver complete technical documents: foundation drawings, P&ID process flow diagram, electrical schematic, PLC operation manual, maintenance manual, spare parts list and factory test reports.
3. Sign formal acceptance handover document after customer confirms stable full-load production and qualified rCB classification quality.

Common Installation Pitfalls & Avoidance Tips

1. Uneven foundation → severe vibration, unstable classification fineness: strictly control foundation flatness and add vibration isolation pads.
2. Pipeline air leakage → insufficient negative pressure, coarse powder overflow: conduct air tightness test after all pipeline installation.
3. Poor internal cleaning during assembly → metal contamination of finished rCB: fully blow clean all cavities before feeding materials.
4. Misaligned coupling → high bearing temperature and frequent shutdown: control coaxiality error within 0.1mm during host installation.
5. Uncalibrated classifier speed → wide particle size distribution: fine-tune frequency under light-load trial production according to particle size test data.

Installing a carbon black classification production line is a systematic engineering workflow integrating civil matching, mechanical assembly, air pipeline sealing, electrical automation and staged performance commissioning. Following the standardized installation process of https://www.rcb-mill.com modular rCB grinding-classification lines can effectively avoid vibration deviation, dust leakage, metal contamination and unstable classification fineness.
Complete installation and qualified commissioning guarantee long-term 24/7 continuous production of ASTM-grade recycled carbon black with stable particle size distribution, minimizing post-installation maintenance and downtime losses.