Method for fixing heavy metal in incineration fly ash

The invention provides a method for fixing heavy metal in incineration fly ash. The method at least comprises the steps of incineration fly ash compatibility, incineration fly ash heating and liquid ammonia cooling. The incineration fly ash compatibility agent is used for compatibility of incineration fly ash molten materials; the incineration fly ash heating is used for heating the mixed incineration fly ash at high temperature; the liquid ammonia cooling is used for cooling the incineration fly ash heated at high temperature; by means of the method, compatibility optimization of incineration fly ash vitrification, directional regulation and control of the content of the vitreous body and efficient fixation of heavy metal are achieved. 本发明提供了一种固定焚烧飞灰中重金属的方法，至少包括：焚烧飞灰配伍、焚烧飞灰加热、液氨冷却；焚烧飞灰配伍子用于对焚烧飞灰熔融料的配伍；焚烧飞灰加热用于对配伍后的焚烧飞灰高温加热；液氨冷却用于对高温加热后的焚烧飞灰冷却；通过本发明实现焚烧飞灰玻璃化的配伍优化，玻璃体含量的定向调控，重金属的高效固定。