CyLas

HYDROCYCLONE UNDERFLOW FLARE MEASUREMENT

Overview

The hydrocyclone classifier forms an integral part of the milling circuit. The overall performance of the milling circuit depends directly on the performance of the hydrocyclone classifier. Plant operators have traditionally used the shape of the hydrocyclone underflow to assess the overall efficiency of the milling circuit – the CyLas provides this information on-line.

Principle of operation

CyLas is an on-line instrument for measuring the hydrocyclone underfow discharge angle. It uses a laser device to measure the distance from a fixed point (where it is mounted) to a point on the hydrocyclone underflow discharge. The distance is then related to the underflow discharge angle with the aid of trigonometric manipulations. Because of its non-contact nature and rugged construction, the CyLas is an inherently low-maintenance instrument.

Flotation Circuit

Below is a typical flotation circuit, showcasing how the CyLasis used in conjunction with the Blue Cube MQi Slurry Analyser to measure the hydrocyclone underflow discharge angle.

CyLas Hydocyclone Underflow Angle Measurement

Benefits

Provided advanced warning of unfavourable operating conditions
Ensure efficient classification by operating the cyclone at optimum discharge flare angle
Optimum classification with real time information while monitoring the cyclone efficiency
Reduces the number of instances and the duration that a hydrocyclone exhibits roping behaviour
Assist in the automated switching of individual cyclones in a cyclone clusters
Low-maintenance due to its non-contact nature and robust construction

The CyLas device is mounted in such a way that the laser is not more than 30 m away from the target measuring surface. The CyLas requires a direct line of sight to the underflow flare. The most convenient position for it is on the outside of the underflow box. This would allow easy of access to it for calibration and adjusting the position.

Specification Characteristics

Operating	Operating Temperature -10°C to 50°C
Laser Protection	Class IP65
Performance	Range of measurement 0° to 30°
	Accuracy ± 1.2° over 20° angle