OI Analytics CNSolution™ 9310 On-line Cyanide Analyzer

Accurate measurement of Cyanide in precious metal leaching solutions

The OI Analytical CNSolution™ 9310 On-line Cyanide Analyzer is designed to measure available cyanide in precious metal leaching solutions by U.S. EPA Method OIA-1677 and ASTM D 6888-09. The gas-diffusion amperometry technique in these methods has been demonstrated to be free of interferences from copper and metallic sulfides that impair the accuracy of traditional techniques such as titration.

Features
Specifications

Deploying CNSolution 9310 On-line Cyanide Analyzers enables gold and silver mills to accurately measure and control cyanide levels at key points in the cyanidation process. Continuous on-line monitoring provides a dynamic view of the process rather than periodic snapshots obtained by grab sampling and laboratory analysis. Improved accuracy facilitates tighter control of cyanide usage and can significantly reduce a plant's operating costs.

Specification
Operating Principle	FIA by gas diffusion amperometry
Measurement Technique	Amperometric detection – silver electrode
Measurement Ranges	0.2 to 50 / 2.0 to 500 / 20 to 2000 ppm CN
Reference Methods	USEPA OIA-1677 / ASTM D 6888-09 (Available CN)
Calibration	2 point calibration
Measurement Accuracy	+ 5% at 50-ppm
Sample Introduction	Continuous on-line fill-and-spill sampling system
Sampling Interval	User programmable
Analysis Time	<3 minutes
Operating Environment	5 – 45 °C, up to 90% humidity (non-condensing)
Operator Interface	Windows® CE-based, Color touch-screen display
Reagents Required	Water, NaOH, HCl, CN– calibration standards
Power Requirements	24V_DC
Output Relays	2 (system alarm, sample alarm)
Analog Output	2 4-20mA (user-configurable concentration)
Data Export	To PC via Ethernet, or using USB memory stick
Instrument Enclosure	NEMA 4X / IEC Class IP-56
External Dimensions	48.3 cm H x 31.1 cm W x 31.1 cm D (19 " H x 12.25 " W x 12.25 " D)
Weight	11 kg (24 lbs.)