Comminution process wear

P9系列研究项目的最终目标以及任何选矿研究项目的最终目标都是降低运营成本。在粉碎过程中，这一成本是根据能源和钢材消耗的财务指标来衡量的。在本项目中，将对不同粉碎过程的磨损进行调查，重点是滚磨(球磨机、球磨机、棒磨机)钢质介质和衬板的磨损，目的是开发实验室测试和技术，帮助预测这些过程中的磨损，并将其降至最低。*应该注意的是，在给定的操作中，滚磨机的磨损可占研磨成本的一半。钢介质和衬里磨损调查将使用并进一步改进建造的测试设备。还将研究其他工艺(HPGR、搅拌磨机、再研磨)的磨损以及建立磨损-腐蚀耦合模型。所有这些情况下的工艺磨损成本都将作为能源和钢材消耗量的函数来衡量。具体地说，项目目标是(I)完成钢介质磨损模型验证，(Ii)定义、开发和验证衬里磨损模型，(Iii)探索其他粉碎工艺(HPGR、再研磨和搅拌磨机)的磨损模型，以及(Iv)探索磨损-腐蚀耦合的钢介质磨损模型。该项目的价值和效益不仅可以从经济角度衡量，也可以从环境和科学角度来衡量，因为它有助于降低粉碎过程磨损方面的运营成本。在经济方面，更好的磨损预测将导致在绿地和实际选矿作业的粉碎过程中将磨损成本降至最低。在环境方面，运营成本作为能源和磨损的函数可以表示为当量吨的二氧化碳排放，如Leinster镍作业的例子所示。因此，有助于降低粉碎磨损成本可以影响《京都议定书》的足迹，并在加拿大的背景下有助于履行我们在《京都议定书》的承诺。从科学上讲，该项目有助于在应用背景下更好地了解磨损机制，并有助于增加磨损方面的知识库。

The ultimate goal of the P9 series of research projects and for that matter of any research project in mineral processing is the reduced operating cost. In comminution processes, this cost is measured in financial terms as a function of energy and steel consumption.  In the present project, wear of different comminution processes will be investigated with a particular emphasis on wear of tumbling (ball, AG/SAG, rod) mill steel media and liners with the goal to develop lab tests and techniques that will contribute to predict and then to minimise wear in these processes.  It should be noted that wear in tumbling mill can represent up to half of grinding cost in a given operation. Steel media and liner wear investigations will use and further refine the test equipment built. The wear of other processes (HPGR, stirred mills, regrind) will be also studied as well as the development of a coupled abrasion-corrosion model. Cost of process wear in all of these cases will be measured as a function of energy and steel consumed. Specifically, the project objectives are (i) to complete steel media wear model validation, (ii) to define, develop and validate a liner wear model, (iii) to explore wear models for other comminution processes (HPGR, regrind & stirred mills) and (iv) to explore a coupled abrasion-corrosion steel media wear model. The value and benefit of this project can be measured not only in economic terms as contributing to reducing operating cost with respect to comminution process wear but also in environmental and scientific terms. In economic terms, better wear prediction will lead to wear cost minimisation in comminution processes both in Greenfield and actual mineral process operations.  In environmental terms, operating costs as a function of energy and wear can be expressed in equivalent tonnes of CO2 emissions as illustrated by the Leinster nickel operations example. Therefore, contributing to lower comminution wear costs can impact on the Kyoto footprint and contribute in the Canadian context to meeting our Kyoto commitment. In scientific terms, this project contributes to a better understanding of wear mechanisms in an applied context as well as contributes increasing the knowledge base in wear.