{"title":"Validation of a population balance model for iron ore dry grinding at the IJmuiden pelletizing plant","authors":"Tako P.R. de Jong","doi":"10.1016/j.mineng.2024.109019","DOIUrl":null,"url":null,"abstract":"<div><div>The dry closed circuit ball mill circuits of Tata Steel’s pelletizing plant in IJmuiden receive a variable mixture of ores to produce a dry ground iron ore mixture. A population balance model was developed to help study circuit unit performance, the impact of installation modifications and influence of input materials on the performance of the circuits. Batch grinding tests were done on input materials, measuring size distribution as function of time using high resolution laser diffraction measurements. Data from the tests were fitted to a breakage and selection function model as well as a cumulative rate model. A population mass balance model of the circuit was developed based on the breakage and selection function model, as it showed a better fit to the batch data for the majority of materials. The circuit model also incorporates a mill model and model for the various classifier stages. The circuits were sampled at various locations in the flow sheet, showing fair overall agreement with model calculations. Differences between model and observations are highlighted and improvements in the modelling technique as well as the sampling discussed.</div></div>","PeriodicalId":18594,"journal":{"name":"Minerals Engineering","volume":null,"pages":null},"PeriodicalIF":4.9000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Minerals Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0892687524004485","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The dry closed circuit ball mill circuits of Tata Steel’s pelletizing plant in IJmuiden receive a variable mixture of ores to produce a dry ground iron ore mixture. A population balance model was developed to help study circuit unit performance, the impact of installation modifications and influence of input materials on the performance of the circuits. Batch grinding tests were done on input materials, measuring size distribution as function of time using high resolution laser diffraction measurements. Data from the tests were fitted to a breakage and selection function model as well as a cumulative rate model. A population mass balance model of the circuit was developed based on the breakage and selection function model, as it showed a better fit to the batch data for the majority of materials. The circuit model also incorporates a mill model and model for the various classifier stages. The circuits were sampled at various locations in the flow sheet, showing fair overall agreement with model calculations. Differences between model and observations are highlighted and improvements in the modelling technique as well as the sampling discussed.
期刊介绍:
The purpose of the journal is to provide for the rapid publication of topical papers featuring the latest developments in the allied fields of mineral processing and extractive metallurgy. Its wide ranging coverage of research and practical (operating) topics includes physical separation methods, such as comminution, flotation concentration and dewatering, chemical methods such as bio-, hydro-, and electro-metallurgy, analytical techniques, process control, simulation and instrumentation, and mineralogical aspects of processing. Environmental issues, particularly those pertaining to sustainable development, will also be strongly covered.