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1. 发明申请

US20180171422A1 METHOD FOR SOLIDIFYING LIQUID STEEL SLAG 审中-公开
公开(公告)号：US20180171422A1
公开(公告)日：2018-06-21
申请号：US15127581
申请日：2015-03-27
申请人： RECOVAL BELGIUM , UNIVERSITÉ LIBRE DE BRUXELLES
发明人： Dirk VAN MECHELEN , Frédérique BOUILLOT , Sandhya SHARMA , Marie-Paule DELPLANCKE
IPC分类号： C21B3/08
CPC分类号： C21B3/08 , C21B2400/02 , C21B2400/022 , C21B2400/026 , C21B2400/072
摘要： The liquid steel slag (2) is poured in at least four successive layers (6-8), comprising a lowermost layer (6), an uppermost layer (7) and at least two intermediate layers (8), in a reservoir (3) and the layers of liquid steel slag are allowed to solidify. After having applied the uppermost layer (7), the solidified steel slag is cooled down more quickly by means of water. The average temperature of each of the intermediate layers (8) is kept at least until the start of the water cooling step, and this for at least one hour, above a minimum temperature which is equal to or higher than the temperature at which β-dicalcium silicate is formed. In this way, more crystalline phases different from dicalcium silicates are formed so that the formation of fines by the transition of β into γ-dicalcium silicates can be considerably reduced. A glassy material and/or a phosphorus containing compound is preferably added to the liquid slag to further reduce the formation of fines.

2. 发明申请

US20170241871A1 METHOD FOR PRODUCING A CARBONATE BONDED, PRESS-MOULDED ARTICLE 审中-公开
公开(公告)号：US20170241871A1
公开(公告)日：2017-08-24
申请号：US15505594
申请日：2015-08-28
申请人： RECOVAL BELGIUM
发明人： Nick MAYELLE , Frédérique BOUILLOT , Dirk VAN MECHELEN
IPC分类号： G01N1/28 , B30B11/02 , B30B9/06 , C04B28/08 , B30B9/04
摘要： The carbonate bonded, press-moulded article is produced by press-moulding a particulate, carbonatable material that contains water and by carbonating the obtained compact with carbon dioxide gas. In order to be able to ensure an optimal compressive strength of the article two types of tests are provided. In the first type of test a sample of the particulate material is compressed with an increasing compaction pressure and when water starts to be expelled from the material as from a particular compaction pressure, the press-moulding step is performed with a compaction pressure which is at least 7 MPa smaller than this compaction pressure. In the second type of test different samples of the particulate material are press-moulded with different compaction pressures and, after having released the compaction pressure, the density of the compact is determined. In case this density decreases instead of increases as from a particular compaction pressure, the press-moulding step is performed with a compaction pressure which is smaller than this particular compaction pressure.

3. 发明授权

US08470067B2 Process for preparing a foaming slag former, product and use thereof 有权
标题翻译：制备泡沫炉渣的方法，产品及其用途
公开(公告)号：US08470067B2
公开(公告)日：2013-06-25
申请号：US12812927
申请日：2009-01-15
申请人： Evelyne Nguyên , Dirk Van Mechelen , Philippe Descamps
发明人： Evelyne Nguyên , Dirk Van Mechelen , Philippe Descamps
IPC分类号： C21B13/12 , C03B19/08
CPC分类号： C21B3/04 , C21C5/54 , C21C7/076 , C21C2300/02 , C22B1/24 , Y02P10/216 , Y02P10/242 , Y02W30/542
摘要： Process for preparing a foaming slag former for electric furnaces comprising the steps of aggregating solid slag particles into a coarser granular material and carbonating the solid slag particles to form the foaming slag former. The solid slag particles are preferably aggregated before carbonization, so that the carbonates form a solid matrix binding the particles together.
摘要翻译：制备用于电炉的泡沫炉渣形成器的方法，包括将固体渣颗粒聚集成较粗颗粒材料并碳化固体渣颗粒以形成泡沫炉渣形成器的步骤。固体渣颗粒优选在碳化之前聚集，使得碳酸盐形成将颗粒结合在一起的固体基质。

4. 发明授权

US08882906B2 Method for recycling waste water from a stainless steel slag treatment process 有权
标题翻译：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
申请人： Dirk Van Mechelen , Isabelle Lecomie , Evelyne Nguyen
发明人： Dirk Van Mechelen , Isabelle Lecomie , Evelyne Nguyen
IPC分类号： C04B7/04 , C04B28/04 , C04B22/00 , C04B18/14 , C04B7/36
CPC分类号： C04B7/364 , C04B18/142 , C04B22/0046 , C04B28/04 , Y02W30/91 , Y02W30/92 , Y02W30/94 , C04B18/08 , C04B18/141 , C04B18/0472 , C04B18/0418
摘要： 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.
摘要翻译：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。

5. 发明授权

US08623134B2 Process for producing a granular material 有权
标题翻译：粒状材料的制造方法
公开(公告)号：US08623134B2
公开(公告)日：2014-01-07
申请号：US12812912
申请日：2009-01-15
申请人： Evelyne Nguyên , Dirk Van Mechelen , Philippe Descamps
发明人： Evelyne Nguyên , Dirk Van Mechelen , Philippe Descamps
IPC分类号： C04B18/14
CPC分类号： C21B3/06 , C04B18/142 , C04B28/02 , C04B2111/00767 , C22B7/04 , Y02P10/212 , Y02P40/18 , Y02W30/543 , Y02W30/91 , Y02W30/94 , C04B40/0028 , C04B40/0071 , C04B40/0231 , C04B18/021
摘要： The present invention relates to a process for producing a granular material 26 for mixing with at least a hydraulic binding agent and with water to produce mortar or concrete. This process comprises at least an aggregation step and a carbonation step. In the aggregation step, steel slag particles from at least a fine fraction 24 of steel slag, in particular a fine fraction of steel slag containing a significant amount of γ-dicalcium silicate, are aggregated into larger grains so as to form a coarser granular material 25. In the carbonation step, said aggregated particles in said coarser granular material 25 are carbonated by means of carbon dioxide so as to produce a carbonated granular material 26. The present invention also relates to a carbonated granular material of aggregated steel slag particles containing a significant amount of γ-dicalcium silicate, in particular at least 3 wt. %, preferably at least 5 wt. % and more preferably at least 7 wt. %, and bound within each grain by a solid matrix containing at least calcium and/or magnesium carbonates.
摘要翻译：本发明涉及一种用于与至少水硬性粘合剂和水混合以制造砂浆或混凝土的颗粒材料26的制备方法。该方法至少包括聚集步骤和碳酸化步骤。在聚集步骤中，来自钢渣的至少细小部分24的钢渣颗粒，特别是含有大量γ-硅酸二钙的钢渣的细小部分被聚集成较大的颗粒，以形成较粗颗粒材料在碳酸化步骤中，所述较粗粒状材料25中的所述凝集颗粒通过二氧化碳进行碳酸化，以生产碳酸化颗粒材料26.本发明还涉及一种含有显着量的γ-二硅酸钙，特别是至少3wt。％，优选至少5wt。％，更优选至少7wt。％，并且通过含有至少钙和/或碳酸镁的固体基质在每个晶粒内结合。

6. 发明授权

US08603419B2 Method of treating an alkaline granular carbonatable material 有权
标题翻译：处理碱性颗粒状可碳化材料的方法
公开(公告)号：US08603419B2
公开(公告)日：2013-12-10
申请号：US13391521
申请日：2010-08-23
申请人： Philippe Descamps , Isabelle Lecomte , Evelyne Nguyen , Dirk Van Mechelen
发明人： Philippe Descamps , Isabelle Lecomte , Evelyne Nguyen , Dirk Van Mechelen
IPC分类号： C04B18/00
CPC分类号： C04B18/021 , B09B3/0033 , C04B2111/0075 , Y02P40/18 , Y02W30/91 , Y02W30/92 , C04B18/10 , C04B20/023 , C04B40/0231 , C04B18/0463
摘要： The invention concerns a method of treating an alkaline granular carbonatable material which contains aluminium metal and which has in particular a pH of at least 10. The method comprises an oxidation step wherein at least a portion of said aluminium metal is oxidized by contact with moisture. The aluminium should be oxidized to avoid swelling problems when using the granular material as aggregate. In the method according to the invention this oxidation is accelerated by providing at least one oxidizing agent in said moisture, which oxidizing agent has a higher redox potential than the water contained in said moisture. The method further comprises a carbonation step wherein the granular carbonatable material is at least partially carbonated to lower the pH thereof. In this way the formation of ettringite, which may also release aluminium ions which causing further swelling problems, can be avoided in the granular material or any ettringite present therein can be destabilized.
摘要翻译：本发明涉及一种处理含有铝金属的碱性颗粒状可碳化材料的方法，该方法特别具有至少10的pH值。该方法包括氧化步骤，其中所述铝金属的至少一部分与水分接触而被氧化。当使用颗粒材料作为骨料时，铝应被氧化以避免溶胀问题。在根据本发明的方法中，通过在所述水分中提供至少一种氧化剂来加速该氧化，该氧化剂具有比所述水分中含有的水更高的氧化还原电位。该方法还包括碳酸化步骤，其中可颗粒状可碳化材料至少部分碳酸化以降低其pH。以这种方式，可以避免在粒状材料中形成可能释放引起更多溶胀问题的铝离子的钙矾石，或者其中存在的任何钙矾石可能不稳定。

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