关键词: 红油滴釉;低温;分相;赤泥

Abstract: In order to reduce the preparation cost and recycle industrial waste, low temperature re d oil drop glaze was preparated at about 1120 ℃ which using red mud as main sources of iron oxide. The effects of the contents of Al2 O3 ,B2 O3 , CaO, MgO ,Fe2 O3 ,ZnO on the glaze glassiness and the red oil drop effect were studied. The results show that the formation of the oil drop glaze mainly based on the phase separation of the glaze. B2 O3 and ZnO can impel glass phase separation, reduce the melting temperature and increase the transparency of the glaze. CaO and Al2 O3 can control phase separation of the glaze and structure of phase separation. Fe2 O3 is enriched in oil droplets. ZnO and MgO have a great influence on the colour of the oil drop glaze, the colour of oil drop glaze changes from black to brownish red with the increase of ZnO, and the colour of oil drop glaze changes from brown to black with the increase of MgO. The effect of glaze thickness on the oil drop glaze were also studied, when the glaze thickness is 1-1. 5 mm, the glaze has the best oil drop effect.

Key words: reoil drop glaze;low temperature;phase separation;red mud