Comminution process wear

P9系列研究项目以及任何矿物加工研究项目的最终目标是降低操作成本。在粉碎过程中，这种成本是以能源和钢材消耗的函数的财务术语来衡量的。在本项目中，将研究不同粉碎过程的磨损，特别强调翻滚（球、AG/SAG、棒状）轧机钢介质和衬板的磨损，目的是开发实验室测试和技术，有助于预测并将这些过程中的磨损降至最低。应该指出的是，在一个给定的操作中，滚磨机的磨损可以代表高达一半的研磨成本。钢介质和衬管磨损调查将使用并进一步完善测试设备。其他工艺（高压辊磨、搅拌磨、再磨）的磨损也将进行研究，并建立耦合磨损-腐蚀模型。在所有这些情况下，过程磨损的成本将作为能源和钢材消耗的函数来衡量。具体来说，该项目的目标是(i)完成钢介质磨损模型验证，（ii）定义、开发和验证衬板磨损模型，（iii）探索其他粉碎过程（高压辊磨、再磨和搅拌磨）的磨损模型，以及（iv）探索磨损-腐蚀耦合钢介质磨损模型。该项目的价值和效益不仅可以从经济角度来衡量，因为它有助于降低与粉碎过程磨损有关的运营成本，而且还可以从环境和科学角度来衡量。从经济角度来看，更好的磨损预测将导致在Greenfield和实际矿物工艺操作中粉碎过程中的磨损成本最小化。在环境方面，运营成本作为能源和磨损的函数可以表示为二氧化碳排放量的当量吨，如伦斯特镍业务的例子所示。因此，降低粉碎磨损成本可以影响京都足迹，并为加拿大实现我们的京都承诺做出贡献。从科学的角度来看，该项目有助于更好地理解应用环境中的磨损机制，并有助于增加磨损方面的知识基础。

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.