浮选智能加药系统在潘集选煤厂的研究与应用
Study and application of intelligent flotation reagent dosing sys-tem at Panji Coal Preparation Plant
孙宗成 1倪恒球 1吕文豹2
作者信息
- 1. 淮南矿业集团 选煤分公司,安徽 淮南 232082
- 2. 安徽理工大学 材料科学与工程学院,安徽 淮南 232001
- 折叠
摘要
为了稳定浮选系统工况,提高浮选效率,满足浮选产品高效精准控制的需求,潘集选煤厂通过在入浮管道上安装入浮矿浆浓度计和流量计,实时在线监测入浮煤泥水浓度和流量,自动计算入浮干煤泥量;安装精煤矿浆灰分仪和尾煤图像识别仪,自动检测浮选精煤灰分和尾煤灰分;采用计量泵作为浮选药剂精准高效添加的执行机构,基于干煤泥量的前馈控制和基于浮选精煤灰分、尾煤灰分的闭环控制,建立了浮选智能加药系统.实践表明:与人工加药方式相比,浮选智能加药系统的药剂用量节约了 10%以上,精煤合格率由 60%提高至 95%及以上,浮选精煤产率提高了约 0.2个百分点,年可节约成本 87.55万元.浮选智能加药系统的应用提升了浮选的智能化程度,提高了浮选精煤的质量以及浮选效率,降低了企业用人成本,保障了职工身体健康.
Abstract
In order to stabilize working condition of flotation system,improve flotation efficiency and meet the requirement for making efficient and accurate control of products,an intelligent flotation agent dosing system capable of performing the following of functions is applied at Panji Plant:real-time online monitoring of density and flow of pulp using densimeter and flowmeter fitted on feed pulp pipe;automation calculation of mass of dry coal in flotation feed;automation detection of ash contents of both concentrate and tailing products using con-centrate ash monitor and tailings image identification instrument;effecting efficient and accurate dosing of re-agent using metering pump as actuating mechanism;and execution of feedforward control based on mass of dry coal and closed-loop control based on ash contents of concentrate and tailing products.Field application shows that compared to the manual dosing mode,the use of the intelligent system can lead to reduction consumption of reagent by over 10%,an increase of qualification rate of concentrate from 60%to a level even exceeding 95%,a rise of yield of concentrate product by 0.2 percentage points,a save of operating costs by 875,5000 yuan a year,enhancement of intelligent level of flotation process,improvement of flotation efficiency and concentrate qual-ity,reduction of labor costs,and improvement of health of operators.
关键词
浮选/智能加药系统/前馈控制/闭环控制/自动加药/精煤产率Key words
flotation/intelligent agent dosing system/feedforward control/closed-loop control/automatic dosing/yield of concentrate引用本文复制引用
基金项目
"十四五"国家重点研发计划项目(2023YFC2907705)
安徽高校协同创新项目(GXXT-2023-104)
出版年
2024
NETL
NSTL
万方数据