Purpose and areas of usage
The proposed development concerns the refining of liquid cast - iron kettle from sulfur by magnesium, which is recovered from oxide in the volume of liquid cast - iron kettle. The elaborated design allows the introduction of the technology of downstream cast - iron kettle desulphurization in the metallurgical and foundry industries without significant changes in the production cycle.
Main characteristics, gist of development
The method of determination of the energy and economically grounded composition of the mixture for the recovery of magnesium from oxide in the volume of the fusion due to the heat of parallel chemical transformations is developed. The maximum degree of desulphurization of cast iron processing was 70% (in laboratory conditions) for the initial sulfur content of 0. 032% and the cost of exothermic mixture in the form of briquettes 15 - 20 kg / ton of cast - iron kettle; Chromium cast - iron kettle (in industrial conditions) - 40% for the initial sulfur content of 0. 14% and the cost of exothermic mixture in the powder form of 10 kg / ton of cast - iron kettle.
Main advantages of development
The most important indicators of technology can be high resource and energy efficiency, the possibility of introducing the technology of after - burning desulphurization of cast iron kettle at enterprises without the use of additional technological equipment.
The developed technology without significant capital costs can be implemented at domestic metallurgical and foundry enterprises, where there is a need for conducting non - aggregate cast - iron kettle desulphurisation.
The state of development
In laboratory and industrial conditions, processing of cast - iron kettle with magnesium has been performed, which confirmed the effectiveness of the proposed technology.