Synergetic effects during phosphorus production in submerged-arc furnaces.

The literature on the kinetics of tricalcium phosphorus reduction is reviewed. Usually phosphorus is produced in submerged-arc furnaces and it is believed that most of the reaction should take place in the bed or solid state due to the higher reduction rate. The position of the electrodes should be controlled to ensure a sufficiently high bed temperature. Experimental work with magmatic and sedimentary ores demonstrated the synergetic effects of mixing different ore types. The function of temperature and reductant was also investigated, with the help of a kinetic model and microprobe analysis. The incorporation of the results into electrode and metallurgical control systems for submerged-arc furnaces is discussed.
The literature on the kinetics of tricalcium phosphorus reduction is reviewed. Usually phosphorus is produced in submerged-arc furnaces and it is believed that most of the reaction should take place in the bed or solid state due to the higher reduction rate. The position of the electrodes should be controlled to ensure a sufficiently high bed temperature. Experimental work with magmatic and sedimentary ores demonstrated the synergetic effects of mixing different ore types. The function of temperature and reductant was also investigated, with the help of a kinetic model and microprobe analysis. The incorporation of the results into electrode and metallurgical control systems for submerged-arc furnaces is discussed.