Utilization of the Wastes of Mechanical Engineering and Metallurgy in the Process of Hardening and Restoration of Machine Parts. Part 1

We present the results of analysis of the procedures of utilization of wastes accumulated in metallurgy, mechanical engineering, and civil engineering, as well as household wastes. Thus, we describe and analyze the principal directions of waste processing. We propose a classification of wastes according to the possibility of their application in the same production, time of their formation, and chemical composition. We discuss the main procedures used for the processing of metal wastes. The classical and promising technologies of utilization of wastes are analyzed. We also indicate that it is reasonable to use wastes that do not require metallurgical remelting and emphasize the necessity of development of the alternative methods of their utilization characterized by relatively low energy consumption, ecological safety, and the possibility of application in the technologies of manufacturing, hardening, and renovation of machine parts.