响应曲面法优化氨法焙烧后粉煤灰除铁工艺

通过响应曲面法(RSM)对粉煤灰与硫酸铵焙烧产物的浸出液进行除铁工艺参数的优化.以反应温度、溶液pH值和晶种加入量为变量，反应后溶液中铝离子质量浓度和铁离子质量浓度为相应变量，分别对黄铵铁矾法除铁过程和针铁矿法除铁过程建立相应的数学模型，并对影响因素进行了分析.通过实验对模型进行了检验，其误差在5%以内，表明模型具有一定的可靠性.对模型进行求解后，分别得出黄铵铁矾法除铁和针铁矿法除铁最佳工艺条件.

Optimization of Iron Removal Process for Calcine of Fly Ash and Ammonium Sulfate via Response Surface Methodology

The optimization of process parameters of iron removal for leachable liquid which is from calcined production of the fly ash and ammonia sulfate was described. The corresponding mathematical model on iron removal by ammonium jarosite method and goethite method were established，respectively. In the above process， the reaction temperature， pH value and adding amount of seed precipitation were variable， and the concentration of aluminum ions and iron ions were corresponding variables. The affecting factors were analyzed at the same time. The models are checked by experiment， and the error is less than 5%， which indicates the models are reliable. After the solution of the models， the best process condition of iron removal is given via ammonium jarosite method and goethite method respectively.