Two Computer Programmes for the Calculation of Mass and Heat Balances in the Production of High-Carbon Ferromanganese

摘要

Two new and comprehensive computer programmes that calculate mass and heat balances for high-carbon ferromanganese furnaces are presented. The first of these, NMASBAL, which was originally written and tested for Metalloys, Meyerton, and subsequently extended for more general use, designs and specifies the proportioning (by mass) of the streams of raw materials to the furnace. The calculation of the heat balance is done by conversion of the chemical analysis of each stream of raw materials to its mineralogical composition, which then forms the basis for the calculation. In calculation of the mineralogical composition, the chemical analyses of the raw materials are used, as well as the knowledge of their mineral constituents, for which thermodynamic data are available. The second programme, NPMASBAL, calculates the mass and heat balances on operating furnaces for the production of high-carbon ferromanganese. These results can then be compared with the design specifications of NMASBAL for evaluation of the performance of the furnace. Both computer programmes permit the interactive input of data by the user, and produce very readable tabulated results.