Details

Autor(en) / Beteiligte

• Jing, Hongquan
• Hou, Cuihong
• Wang, Haobin
• Yao, Yuan
• Liu, Bingbing

Titel

Slag Activation in the Carbothermic Reduction of Phosphorite with Adding Micronutrient-Bearing Cosolvents

Ist Teil von

• JOM (1989), 2021-03, Vol.73 (3), p.941-950

Ort / Verlag

New York: Springer US

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• High smelting temperature of phosphate ore and low activity of the slag lead to energy-extensive consumption and large solid waste generation in the yellow phosphorus industry. Micronutrient-bearing cosolvents were added to the reduction smelting process of phosphate ore to reduce the smelting temperature and increase the activity of slag in the current work. Thermodynamic analysis demonstrated that B 2 O 3 and K 2 O as cosolvents can decrease the melting temperature, promote the liquid phase formation and reduce the slag viscosity. In addition, cosolvents had no unfavorable effect on the reduction volatilization of phosphate ore, and the volatilization ratio of phosphorus was > 97 wt.% at 1550°C for 1 h. In this case, the value of slag was enhanced with the addition of cosolvents, and the activation ratios of micronutrients were > 90%. Resultantly, no solid waste was generated since the activated slag can be regarded as a favorable ingredient for the crop fertilizer.