公开(公告)号：US20130206041A1

公开(公告)日：2013-08-15

申请号：US13810625

申请日：2011-07-18

Applicant: Dirk Van Mechelen ,  Isabelle Lecomie ,  Evelyne Nguyen

Inventor： Dirk Van Mechelen ,  Isabelle Lecomie ,  Evelyne Nguyen

IPC: C04B7/36

CPC classification number: C04B7/364 ,  C04B18/142 ,  C04B22/0046 ,  C04B28/04 ,  Y02W30/91 ,  Y02W30/92 ,  Y02W30/94 ,  C04B18/08 ,  C04B18/141 ,  C04B18/0472 ,  C04B18/0418

Abstract: The present invention relates to a method for recycling waste water from a stainless steel slag treatment process wherein stainless steel slag is brought into contact with water, in particular to neutralize the free lime contained therein, thereby producing said waste water. This waste water contains heavy metals, including at least chromium, and has a pH higher than or equal to 11. In accordance with the invention, it is used as production water for manufacturing mortar and/or concrete. In this way, the heavy metals, which are dissolved in the waste water and thus readily available, become bound in the newly formed cement phases so that they are prevented from leaching. Moreover, it has been found that the workability of the fresh mortar or concrete and also the quality of the final mortar or concrete materials is not negatively affected by the use of this alkaline waste water and that an accelerated setting could be achieved during the first hours.

Abstract translation: 本发明涉及一种用于从不锈钢渣处理方法回收废水的方法，其中不锈钢渣与水接触，特别是中和其中所含的游离石灰，从而产生所述废水。 该废水含有重金属，至少包含铬，并具有高于或等于11的pH值。根据本发明，它被用作制造砂浆和/或混凝土的生产水。 以这种方式，溶解在废水中并因此容易获得的重金属被结合在新形成的水泥相中，使得它们被防止浸出。 此外，已经发现，新鲜的砂浆或混凝土的可加工性以及最终的砂浆或混凝土材料的质量不会受到使用这种碱性废水的不利影响，并且在第一小时内可以实现加速的凝固 。

公开(公告)号：US08882906B2

公开(公告)日：2014-11-11

申请号：US13810625

申请日：2011-07-18

Applicant: Dirk Van Mechelen ,  Isabelle Lecomie ,  Evelyne Nguyen

Inventor： Dirk Van Mechelen ,  Isabelle Lecomie ,  Evelyne Nguyen

IPC: C04B7/04 ,  C04B28/04 ,  C04B22/00 ,  C04B18/14 ,  C04B7/36

CPC classification number: C04B7/364 ,  C04B18/142 ,  C04B22/0046 ,  C04B28/04 ,  Y02W30/91 ,  Y02W30/92 ,  Y02W30/94 ,  C04B18/08 ,  C04B18/141 ,  C04B18/0472 ,  C04B18/0418

Abstract: The present invention relates to a method for recycling waste water from a stainless steel slag treatment process wherein stainless steel slag is brought into contact with water, in particular to neutralize the free lime contained therein, thereby producing said waste water. This waste water contains heavy metals, including at least chromium, and has a pH higher than or equal to 11. In accordance with the invention, it is used as production water for manufacturing mortar and/or concrete. In this way, the heavy metals, which are dissolved in the waste water and thus readily available, become bound in the newly formed cement phases so that they are prevented from leaching. Moreover, it has been found that the workability of the fresh mortar or concrete and also the quality of the final mortar or concrete materials is not negatively affected by the use of this alkaline waste water and that an accelerated setting could be achieved during the first hours.

Abstract translation: 本发明涉及一种用于从不锈钢渣处理方法回收废水的方法，其中不锈钢渣与水接触，特别是中和其中所含的游离石灰，从而产生所述废水。 该废水含有重金属，至少包含铬，并具有高于或等于11的pH值。根据本发明，它被用作制造砂浆和/或混凝土的生产水。 以这种方式，溶解在废水中并因此容易获得的重金属被结合在新形成的水泥相中，使得它们被防止浸出。 此外，已经发现，新鲜的砂浆或混凝土的可加工性以及最终的砂浆或混凝土材料的质量不会受到使用这种碱性废水的不利影响，并且在第一小时内可以实现加速的凝固 。