Lihero NaAl2000 Automated Sodium Aluminate Solution Analyzer
| Brand | Lihero |
|---|---|
| Origin | Hunan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | NaAl2000 |
| Pricing | Available Upon Request |
Overview
The Lihero NaAl2000 Automated Sodium Aluminate Solution Analyzer is an industrial-grade online reaction analysis system engineered for continuous, unattended quantitative determination of key compositional parameters in Bayer process liquors—specifically sodium aluminate (NaAlO₂) concentration, caustic soda (NaOH) content, and total alkalinity. Deployed directly at extraction, digestion, or precipitation unit interfaces, the analyzer operates on a validated wet-chemistry platform integrating automated liquid handling, precision photometric detection (typically at 400–800 nm), and multi-point calibration traceable to NIST-certified reference standards. Unlike offline titration or ICP-OES workflows requiring sample transport, dilution, and manual intervention, the NaAl2000 performs end-to-end analysis—including intelligent dilution of high-solids filtered liquor samples—within a sealed, corrosion-resistant fluidic path constructed from PFA, Hastelloy C-276, and sapphire optics. Its architecture complies with ISA-88 batch control modular design principles and supports integration into DCS/SCADA environments via Modbus TCP or OPC UA.
Key Features
- Intelligent native-sample analysis: Accepts undiluted, high-solids filtered sodium aluminate liquor (up to 350 g/L Al₂O₃ equivalent) and autonomously executes programmable dilution protocols prior to photometric quantification.
- Multi-channel parallel analysis: Simultaneously measures NaAlO₂, free NaOH, and total alkalinity (as Na₂O) using dedicated optical channels with temperature-stabilized LED sources and solid-state detectors, reducing cycle time to ≤120 seconds per sample.
- Digital sample traceability: Integrates RFID-tagged sample cups or barcode-scanned vial labels to auto-populate LIMS-compatible metadata—including batch ID, timestamp, operator code, and instrument calibration status—eliminating transcription errors.
- Low operational overhead: Consumables limited to pre-filled reagent cartridges (aluminon, phenolphthalein, methyl orange), ultrapure water (≥18.2 MΩ·cm), and disposable PFA sample cups; maintenance intervals exceed 30 days under continuous operation.
- Single-operator workflow: Fully automated start-to-finish operation—from sample loading to report generation—requires no manual pipetting, titrant addition, or endpoint interpretation.
Sample Compatibility & Compliance
The NaAl2000 is validated for use with clarified Bayer process liquors containing suspended solids <5 ppm, temperature range 20–45 °C, and pH 13.5–14.2. It meets ISO 9001:2015 requirements for measurement process control and supports GLP-compliant audit trails per FDA 21 CFR Part 11 when deployed with optional electronic signature and data integrity modules. All photometric calibrations are traceable to certified reference materials (CRMs) aligned with ASTM E2914–19 (Standard Guide for Validation of Analytical Methods for Inorganic Species in Process Streams). The system’s corrosion-resistant wetted materials comply with NACE MR0175/ISO 15156 for high-pH caustic service.
Software & Data Management
The embedded Linux-based control software provides real-time trend visualization, configurable alarm thresholds (e.g., NaAlO₂ deviation >±0.5 g/L), and automatic report export in CSV, PDF, or XML formats. Data storage includes full audit trail logging (user actions, method changes, calibration events) with SHA-256 hashing for integrity verification. Optional cloud synchronization enables remote diagnostics and historical performance benchmarking across multiple production lines. Integration with enterprise LIMS or MES systems is achieved through standardized RESTful APIs or OPC UA Information Models.
Applications
- Real-time optimization of caustic concentration in digestion tanks to maximize alumina dissolution yield while minimizing silica scaling.
- Feedback control of seeding rate in precipitators by correlating NaAlO₂ supersaturation index with crystal growth kinetics.
- Quality gate monitoring of clarified liquor entering flash evaporation units to prevent fouling-related downtime.
- Statistical process control (SPC) charting of alkalinity ratios (caustic/total alkali) to maintain stable red mud settling behavior.
- Supporting ISO 5171:2021 compliance for aluminum oxide production reporting through automated, auditable data capture.
FAQ
Does the NaAl2000 require daily standardization?
No—calibration is performed automatically every 4 hours using onboard CRM standards; manual verification is recommended weekly per ASTM D7240.
Can it interface with Siemens PCS7 or Honeywell Experion DCS?
Yes—native Modbus TCP and OPC UA server support enable bidirectional data exchange without third-party gateways.
What is the minimum sample volume required per analysis?
15 mL of filtered liquor is sufficient; the system handles variable fill levels via capacitive level sensing.
Is hazardous area certification available?
ATEX II 2G Ex db IIB T4 Gb and IECEx certification options are available upon request for Zone 1 installation.
How is reagent stability managed during extended unattended operation?
Reagent cartridges include integrated humidity and temperature sensors; expiration alerts trigger 72 hours prior to nominal shelf-life expiry.
