Abstract
Centrifugal granulation with waste recovery was proposed to recover the waste heat from the molten yellow phosphorus slag produced by an electric arc furnace and reduce pollution. The yellow phosphorus slag was heated to the same temperature as industrial electric furnaces and then granulated by centrifugal granulation. The study mainly investigated the effect of operating parameters on particle diameter distribution, flight distance distribution, and fiber mass fraction during the granulation process. The results showed that the average diameter was mainly 1.5–3 mm, and tended to decrease with the decrease of the mass flow rate, the increase of the rotating speed, and the increase of the rotary cup diameter. The particle diameter obeyed a log-normal distribution. As the rotating speed increased and the rotary cup diameter increased, the average flight distance and the distribution of flight distance were dispersed. The average flight distance was related to the linear velocity at the edge of the rotary cup. Increasing slag temperature, mass flow rate, and decreasing rotary cup diameter can reduce the fiber mass fraction. Re and We numbers can determine whether fibers produce.
Published Version
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