REAGENT DOSAGE CONTROL FOR THE ANTIMONY FLOTATION PROCESS BASED ON FROTH SIZE PDF TRACKING AND AN INDEX PREDICTIVE MODEL
Cao Bin-fang1,2, Xie Yong-fang1, Yang Chun-hua1, Gui Wei-hua1, Li Jian-qi3
1School of Information Science and Engineering, Changsha, 410083 China
2College of Physics and Electronics Science, Hunan 415000 China
3, Hunan 415000 China
Keywords: Пенная флотация, контроль расхода реагента, размер пузырьков, функция распределения случайных величин, управление средствами нечеткой логики, Froth flotation, dosage control, bubble size, probability density function, fuzzy control
Abstract
The control of flotation processes has always been an important research subject. Many experts and scholars have carried out extensive research to avoid the problems encountered when operating in a manual mode. By combining long-term worker tracking experiments and observations of froth appearance characteristics in a gold-antimony flotation plant, a reagent dosage hybrid control strategy for the antimony flotation process is proposed in this work. This strategy consists of two parts: reagent dosage tracking control based on a froth size probability density function (PDF) and reagent dosage compensation control based on a distributed-machine vision predictive model. The proposed method was tested on a gold-antimony flotation process, and it improved tailings qualification rate to 96.67%, and reduced the tailings standard deviation. This method also efficiently accounts for the influence of disturbances on the flotation system and improves the stability and effectiveness of the flotation system.
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