Application of electricity to the ore handling industry

The paper gives a general description of the typical method of handling ore from the mine to the blast furnace, describing in a general way the machinery used in the different steps of the process. The general principles underlying the application of electric motors to these various types of machines are discussed, as well as the class of motors best adapted to the work and the considerations in regard to the power installation. The essential points to be considered are; 1, the determination of the shortest path over which the ore is to travel; 2, the determination of the characteristics of the loads in moving ore through this path; 3, the designing of the electrical equipment to carry these loads with minimum peak and maximum reliability, and 4, installation of a substation that will handle the load satisfactorily and most economically, considering both demand charges and the total kilowatt-hours used.