Monitoring and control of a froth flotation plant

A foam flotation and foam technology, applied in flotation, chemical instruments and methods, solid separation, etc., can solve problems such as inability to overcome foam surface difficulties

Inactive Publication Date: 2009-12-09
OUTOTEC OYJ
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many earlier efforts to measure velocity were ineffective because they were not able to overcome difficulties caused by turbulence at the surface of the foam

Method used

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  • Monitoring and control of a froth flotation plant
  • Monitoring and control of a froth flotation plant
  • Monitoring and control of a froth flotation plant

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Embodiment Construction

[0026] The approach taken in accordance with the present invention is based on the premise that the purpose of using machine vision to improve the performance of flotation operations should be to provide a good alternative to conventional human vision and human problem-solving abilities. Thus, the present invention seeks to mimic the observation and intelligence of a trusted person. The advantage of this approach is that it simplifies the understanding of the technology by both the process technician and the plant staff by what is new to the plant staff.

[0027] The present invention modifies the conventional method of "characterizing foam" in order to "measure foam characteristics". Due to the fact that each flotation plant has different desired froth characteristics and different corrections for different deviations in order to achieve the desired flotation state, the old method of froth characterization encountered a great deal of opposition among plant employees . For a...

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Abstract

The invention uses machine-vision to improve the performance of a flotation operation to provide a substitute for conventional human vision and problem-solving abilities. The invention redirects the conventional approach of ''characterising the froth'' to ''measuring the froth characteristics''. The invention provides a method of monitoring and controlling a mineral mixture flow in a froth flotation cell of a flotation plant which includes the steps of obtaining a series of digital images extracted of froth characteristics from a flotation cell. The digital images are transmitted to a computer for processing thereof into parameter signals of digital parameter froth characteristics. Control signals are produced in response to parameter signals received for causing required variations in froth characteristics in a flotation cell; and the froth characteristics in the flotation cell are controlled in response to the control signals so as to cause required variations in the froth characteristics in the cell.

Description

[0001] This application is a divisional application of the invention patent application with the application number 00816193.3, the application date being November 23, 2000, and the invention title being "monitoring and controlling the froth flotation plant". technical field [0002] The present invention relates to the monitoring and control of froth flotation plants. Background technique [0003] In an ore flotation plant, the stream of ore mixture to be processed must be observed and controlled in order to achieve an optimum separation of the ore components. For this, foam velocity, bubble size and stability are important factors. [0004] Since the early days of flotation, process technicians have known that the rate at which froth is recovered on the overflow of the flotation cell has a very direct and consistent effect on the grade and recovery of the process. One of the most important aspects of a process technician's job is ensuring that froth moves at a desired and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/14B03D1/02
CPCB03D1/028Y10S209/902Y10S209/901B03D1/02B03D1/14
Inventor 弗朗西斯科·E.·杜普利西斯马克·冯沃尔斯特
Owner OUTOTEC OYJ
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