Reduction and harmless method for recycling heavy metal waste
    2.
    发明授权
    Reduction and harmless method for recycling heavy metal waste 有权
    减少和无害的回收重金属废物的方法

    公开(公告)号:US09499440B2

    公开(公告)日:2016-11-22

    申请号:US14419255

    申请日:2014-03-13

    Abstract: An amount-reduction, harmless, disposal method for heavy metal waste gypsum (HMWG), which belongs to the technical fields of recycling economy and environmental protection. The HMWG used as raw material is subjected to processes of smelting fluxpreparation, lead smelting, fuming, and geopolymeric gelling, to realize amount-reduction, harmless and resources recycling utilization of heavy metal waste gypsum. The smoke containing sulfur dioxide produced in the smelting process is sent to the acid making system, and the produced dust with heavy metal is sent to the dedicated system for heavy mental disposing. The smoke dust produced in the fuming process is returned to the lead smelting system. The secondary HMWG produced in the acid making system would be returned to the preparation process of smelting flux. And the final products would be sulfuric acid and geopolymer material.

    Abstract translation: 重金属废石膏(HMWG)的减量,无害化处置方法属于循环经济和环保技术领域。 用作原料的HMWG进行冶炼助熔,铅冶炼,发烟和地质聚合胶凝的工艺,实现重金属废石膏的减量,无害化和资源循环利用。 将冶炼过程中产生的含二氧化硫的烟气送至制酸系统,将重金属产生的粉尘送至专用系统进行重心处理。 在发烟过程中产生的烟尘返回到铅冶炼系统。 在制酸系统中生产的次级HMWG将返回到熔炼焊剂的制备过程。 最终产品将是硫酸和地质聚合物材料。

    Method for recycling waste water from a stainless steel slag treatment process
    4.
    发明授权
    Method for recycling waste water from a stainless steel slag treatment process 有权
    从不锈钢渣处理过程回收废水的方法

    公开(公告)号:US08882906B2

    公开(公告)日:2014-11-11

    申请号:US13810625

    申请日:2011-07-18

    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 。

    Electrically conductive concrete and controlled low strength materials having spent carbon sorbent
    7.
    发明申请
    Electrically conductive concrete and controlled low strength materials having spent carbon sorbent 有权
    具有废碳吸附剂的导电混凝土和受控低强度材料

    公开(公告)号:US20070240620A1

    公开(公告)日:2007-10-18

    申请号:US11402452

    申请日:2006-04-12

    Applicant: Bruce Ramme

    Inventor: Bruce Ramme

    Abstract: Compositions are provided for increasing the electrical conductivity of concrete or controlled low-strength materials (flowable fill). One composition sets to produce a concrete and includes portland cement, water, aggregate, and particulate matter including a sorbent and a contaminant absorbed, adsorbed or entrapped by the sorbent. The sorbent may be activated carbon, and the contaminant may be mercury or a compound containing mercury. Another composition is a self-compacting, cementitious flowable fill composition that includes portland cement, water, and particulate matter including a sorbent and a contaminant absorbed, adsorbed or entrapped by the sorbent. The sorbent may activated carbon, and the contaminant may be mercury or a compound containing mercury. The compositions may also include carbon fibers.

    Abstract translation: 提供组合物用于提高混凝土或受控低强度材料(可流动填充物)的导电性。 一种组合物用于生产混凝土,并且包括波特兰水泥,水,骨料和颗粒物质,包括吸附剂和被吸附剂吸收,吸附或捕获的污染物。 吸附剂可以是活性炭,污染物可以是汞或含有汞的化合物。 另一种组合物是自密实的水泥可流动填充组合物,其包括硅酸盐水泥,水和颗粒物质,包括吸附剂和被吸附剂吸收或吸附的污染物。 吸附剂可以活化碳,污染物可以是汞或含有汞的化合物。 组合物还可以包括碳纤维。

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