公开(公告)号：US20090234174A1

公开(公告)日：2009-09-17

申请号：US12401867

申请日：2009-03-11

申请人： Andrea L. Westman ,  Jimmy V. Rouse ,  James P. Jonas, JR. ,  Neil M. Bardach

发明人： Andrea L. Westman ,  Jimmy V. Rouse ,  James P. Jonas, JR. ,  Neil M. Bardach

IPC分类号： A62D3/32 ,  A62D101/43

CPC分类号： B09B3/00 ,  C01F7/066

摘要： A method for solid-phase activation and neutralization of bauxite refinery residue (“red mud”) comprises the steps of preparing a quantity of untreated red mud having a moisture content of approximately 15 percent by weight, introducing a quantity of at least one reagent, and mixing in a mixer the quantity of untreated red mud and the quantity of at least one reagent. The mixing step is adapted to expose reaction sites at the nano-particle level. In one embodiment, the at least one reagent is calcium chloride and magnesium chloride salts. In another embodiment, an acid is introduced to the quantity of untreated red mud and the quantity of at least one reagent. A neutralized and activated red mud formed by the process is suitable for heavy metals remediation in soil and water.

摘要翻译： 铝土矿精炼残渣（“红泥”）的固相活化和中和的方法包括以下步骤：制备一定量的含水量为约15重量％的未处理红泥，引入一定量的至少一种试剂， 并在混合器中混合未处理的红泥的量和至少一种试剂的量。 混合步骤适于暴露纳米颗粒水平的反应位点。 在一个实施方案中，所述至少一种试剂是氯化钙和氯化镁盐。 在另一个实施方案中，将酸引入未处理的红泥的量和至少一种试剂的量。 通过该过程形成的中和活化的红泥适用于土壤和水中的重金属补救。