TY - THES

T1 - Loading and Crushing Assessment of a Blasted Muck Pile

AU - Schleicher, Robert

N1 - no embargo

PY - 2019

Y1 - 2019

N2 - The constantly increasing demand for raw materials, especially in the Eastern European countries, means that more and more mining companies have to be opened or that existing companies increase their production. Bound to the deposits and dependent on the environmental and economic conditions, it is often not possible to situate mining operations beyond urban development. Due to the emissions associated with mining, this often leads to tensions between the company and the population. For this reason, an EU project entitled SLIM (Sustainable low impact mining solution) was launched, which addresses the issue of emissions and energy consumption in the affected companies. As a part of this project, it is important to find influencing factors and process interactions, defined as Key Performance Indicators, which allow to classify and assess these processes and their changes with respect to their emission reduction. The Erzberg in Eisenerz serves here as a test mine where a several weeks lasting measuring campaign is carried out. Hereby, the influence of variable parameters such as blast site geometry or explosives type on downstream processes such as particle size distribution or loading times will be investigated. As a framework for this thesis, an insight into existing international studies will be given at the beginning, followed by a description of the methodology and results of a first test measurement campaign. Part of this measuring program and task of this work it is to analyse the loading activity at the muck pile in connection with the primary crushers. In this context, it is examined whether the rather general term "loadability (of a blasted muck pile)" can be expressed in figures or quantified in a more precise form. This is derived from telemetry data of the trucks and wheel loaders assigned to the respective muck pile as well as the energy curves of the crushers. In order to process this abundance of data sets obtained during these activities as effectively as possible, a semi-automated data evaluation system was developed in the course of this work. Within the scope of a several days lasting test measurement campaign, a camera was installed on the wheel loader as a further data source to supplement the telemetry data. From this camera, more detailed findings of the loading cycle are now available, whereby additional statements regarding the individual influences of the respective wheel loader operators are possible.

AB - The constantly increasing demand for raw materials, especially in the Eastern European countries, means that more and more mining companies have to be opened or that existing companies increase their production. Bound to the deposits and dependent on the environmental and economic conditions, it is often not possible to situate mining operations beyond urban development. Due to the emissions associated with mining, this often leads to tensions between the company and the population. For this reason, an EU project entitled SLIM (Sustainable low impact mining solution) was launched, which addresses the issue of emissions and energy consumption in the affected companies. As a part of this project, it is important to find influencing factors and process interactions, defined as Key Performance Indicators, which allow to classify and assess these processes and their changes with respect to their emission reduction. The Erzberg in Eisenerz serves here as a test mine where a several weeks lasting measuring campaign is carried out. Hereby, the influence of variable parameters such as blast site geometry or explosives type on downstream processes such as particle size distribution or loading times will be investigated. As a framework for this thesis, an insight into existing international studies will be given at the beginning, followed by a description of the methodology and results of a first test measurement campaign. Part of this measuring program and task of this work it is to analyse the loading activity at the muck pile in connection with the primary crushers. In this context, it is examined whether the rather general term "loadability (of a blasted muck pile)" can be expressed in figures or quantified in a more precise form. This is derived from telemetry data of the trucks and wheel loaders assigned to the respective muck pile as well as the energy curves of the crushers. In order to process this abundance of data sets obtained during these activities as effectively as possible, a semi-automated data evaluation system was developed in the course of this work. Within the scope of a several days lasting test measurement campaign, a camera was installed on the wheel loader as a further data source to supplement the telemetry data. From this camera, more detailed findings of the loading cycle are now available, whereby additional statements regarding the individual influences of the respective wheel loader operators are possible.

KW - Open pit

KW - loading

KW - crushing

KW - camera

KW - telemetry data

KW - Tagbau

KW - Ladetätigkeit

KW - Brecherzyklen

KW - Kamera

KW - Telemetriedaten

M3 - Master's Thesis

ER -