公开(公告)号：US20180170805A1

公开(公告)日：2018-06-21

申请号：US15849038

申请日：2017-12-20

Applicant: Gerdau S.A.

Inventor： Marina Reno Barbosa ,  Alexandre de Matos ,  Edson Geraldo da Silva ,  Arnaldo Dias de Andrade ,  Ruben Antonio Sole ,  Fernando Gabriel da Silva Araujo ,  Jefferson Januario Mendes ,  Fernando Leopoldo von Krueger

IPC: C04B5/06 ,  C21B3/10 ,  C04B7/147 ,  C04B28/08 ,  C04B103/52

CPC classification number: C04B5/06 ,  C04B7/147 ,  C04B7/40 ,  C04B28/082 ,  C04B2103/52 ,  C21B3/08 ,  Y02P40/143 ,  Y02W30/94 ,  C04B14/06 ,  C04B18/142 ,  C04B40/0028

Abstract: The present invention relates to a novel cementitious product produced from steelworks slag additivation to obtain material having properties suitable for use in the partial or total clinker replacement for the production of different types of cement. The process, which is also object of this invention, aims to adapt the properties of steelworks slag, by means of thermochemical treatment, including and preferably, but not only, still in the liquid steelworks slag pot, taking advantage of the thermal input of steel processing, to form a greater amount of alite (essential compound to increase pozzolanicity), under controlled conditions. After additivation, preferably, but not exclusively, the additivated steelworks slag is subjected to quenching, comminution and concentration to stabilize the alite fraction, to release the present phases and to remove any excess contaminants, such as metallic iron.

公开(公告)号：US20180057911A1

公开(公告)日：2018-03-01

申请号：US15563446

申请日：2016-03-30

Applicant: Metallo Belgium

Inventor： Mathias Chintinne ,  Charles Geenen ,  Dirk Goris

IPC: C22B7/04 ,  B28B3/02 ,  B28B11/24 ,  C22B15/00 ,  C22B4/00 ,  C04B5/00 ,  C04B5/06 ,  C04B28/08 ,  C04B14/06 ,  C04B18/14

CPC classification number: C22B7/04 ,  B28B3/02 ,  B28B11/243 ,  C04B5/00 ,  C04B5/06 ,  C04B5/065 ,  C04B14/06 ,  C04B18/141 ,  C04B28/06 ,  C04B28/08 ,  C04B28/26 ,  C04B2103/54 ,  C04B2111/28 ,  C04B2111/52 ,  C04B2201/30 ,  C22B4/005 ,  C22B15/0054 ,  Y02P10/212 ,  Y02W30/94 ,  C04B38/10 ,  C04B7/02 ,  C04B22/06

Abstract: Disclosed is a slag comprising, on a dry basis and expressed as the total of the metal present as elemental metal and the presence of the metal in an oxidized state, a) at least 7% wt and at most 49% wt of Fe, b) at most 1.3% wt of Cu, c) at least 24% wt and at most 44% wt of SiO2, and d) at least 2.0% wt and at most 20% wt of CaO, characterised in that the slag comprises, on the same basis, e) at least 0.10% wt and at most 1.00% wt of Zn, f) at least 0.10% wt and at most 2.5% wt of MgO, and g) at most 0.100% wt of Pb. Further disclosed are an improved object comprising the slag, a process for the production of the slag, and a number of uses of the slag, whereby the slag may comprise up to at most 1.50% wt of zinc and down to 1.0% wt of CaO.

公开(公告)号：US09534266B2

公开(公告)日：2017-01-03

申请号：US14352925

申请日：2013-06-27

Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION

Inventor： Toshiya Harada ,  Takashi Arai ,  Hiroki Fukumura

IPC: F27D25/00 ,  F27D17/00 ,  C21C7/00 ,  F27D15/00 ,  F27D3/14 ,  C04B5/06 ,  C21C5/52 ,  F27B3/18 ,  F27B19/04

CPC classification number: C21C7/0087 ,  C04B5/06 ,  C21C5/5229 ,  C21C5/527 ,  C21C2005/5235 ,  C21C2300/04 ,  F27B3/183 ,  F27B19/04 ,  F27D3/14 ,  F27D15/00 ,  Y02P10/216

Abstract: This slag-supplying container of an electric furnace for reduction processing of steel-making slag includes: a container body that causes hot steel-making slag to flow to the electric furnace; a slag discharging portion connected with an electric-furnace-side slag-supplying port; a slag receiving portion that receives the hot steel-making slag supplied; a lid that opens and closes the slag receiving portion; an exhausting portion that discharges exhaust gas from the electric furnace; and, a tilting unit that tilts the container body to adjust the amount of inflow of the hot steel-making slag to the electric-furnace-side slag-supplying port.

Abstract translation: 用于炼钢渣的还原加工的电炉的渣供给容器包括：使热炼钢渣流到电炉的容器主体; 与电炉侧炉渣供给口连接的排渣部; 接收供给的热炼钢渣的炉渣收容部; 打开和关闭炉渣接收部分的盖子; 从电炉排出废气的排气部; 以及倾斜单元，其倾斜容器主体以调节热炼钢渣到电炉侧炉渣供给口的流入量。

公开(公告)号：US20140331820A1

公开(公告)日：2014-11-13

申请号：US14446283

申请日：2014-07-29

Applicant: Hyundai Steel Company ,  Inha-Industry Partnership Institute

Inventor： Joon-Seong Ki ,  Dong-Kyung Shin ,  Byung-Don You ,  Seong-Woong Joo ,  Seong-Hun Hong ,  Jin-Ill Hwang

IPC: C21B15/00 ,  C22B7/04

CPC classification number: C21B15/00 ,  C04B5/00 ,  C04B5/06 ,  C21C5/36 ,  C21C5/54 ,  C21C7/0087 ,  C22B7/04 ,  Y02P10/216

Abstract: Disclosed herein is a method of reducing slag, including the steps of: examining the components of slag to be reduced, and setting a target composition ratio after reduction; determining the mixing ratio and input amount of a complex reducing agent of a plurality of reducing agents in accordance with the set target composition ratio to determine the complex reducing agent; and supplying the complex reducing agent into molten slag to reduce the slag. The method is advantageous in that the reduction efficiency of slag can be maximized, various kinds of reducing agents can be efficiently used, and the recovery amount of valuable metals can be increased, thus reducing cost.

Abstract translation: 本文公开了一种减少炉渣的方法，包括以下步骤：检查要还原的炉渣组分，还原后设定目标组成比; 根据设定的目标组成比确定多种还原剂的复合还原剂的混合比例和输入量，以确定复合还原剂; 并将复合还原剂供应到熔渣中以减少炉渣。 该方法的优点在于可以使炉渣的还原效率最大化，可以有效地使用各种还原剂，可以提高贵金属的回收量，从而降低成本。

公开(公告)号：US20120073406A1

公开(公告)日：2012-03-29

申请号：US13310562

申请日：2011-12-02

Applicant: Joonseong Ki ,  Jinill Hwang

Inventor： Joonseong Ki ,  Jinill Hwang

IPC: C22B5/00 ,  B02C23/18

CPC classification number: C04B5/06 ,  C04B18/142 ,  C04B2111/20 ,  C21B3/08 ,  C21B3/10 ,  C22B5/12 ,  C22B7/04 ,  Y02P10/216 ,  Y02W30/94

Abstract: Disclosed is a method and apparatus for recovering valuable metals from slag and manufacturing multifunctional aggregate, wherein a reducing agent is fed into molten slag discharged into a slag pot or a slag reforming pot from a converter or an electric arc furnace thus recovering valuable metals from the molten slag, and then the molten slag is formed into a lightweight porous structure. Accordingly, the valuable metals (Fe, Mn) are recovered from the slag discharged from the converter or electric arc furnace, and slag having low specific gravity is ensured using foaming and controlled cooling and then formed into multifunctional aggregate.

Abstract translation: 公开了一种用于从炉渣中回收贵重金属并制造多功能骨料的方法和装置，其中将还原剂送入从转炉或电弧炉排入炉渣或炉渣重整锅炉的熔渣中，从而从 熔渣，然后将熔渣形成为轻质多孔结构。 因此，从转炉或电弧炉排出的炉渣中回收有价金属（Fe，Mn），通过发泡控制冷却确保低比重的炉渣，形成多功能骨料。

公开(公告)号：US06660223B2

公开(公告)日：2003-12-09

申请号：US09959060

申请日：2001-10-16

Applicant: Alfred Edlinger

Inventor： Alfred Edlinger

IPC: C21C100

CPC classification number: C04B5/06 ,  C21B3/08

Abstract: In a device for atomizing liquid melts, in particular oxidic slags or glasses, including a slag tundish and an outlet opening into which a lance is immersed to inject gases or vapor while forming an annular gap, the lance (3) is comprised of two coaxial tubes (4, 5) which are separately displaceable in the axial direction and fixable in their respective axially displaced positions.

Abstract translation: 在用于雾化液体熔体的装置中，特别是氧化炉渣或玻璃，包括炉渣中间包和出口，在形成环形间隙的同时，喷枪穿过其喷射气体或蒸气，喷枪（3）由两个同轴 管（4,5），其可以在轴向方向上分开移动并可固定在其相应的轴向位移位置。

公开(公告)号：US20030084821A1

公开(公告)日：2003-05-08

申请号：US10182046

申请日：2002-10-28

Inventor： Alfred Edlinger

IPC: C04B007/14

CPC classification number: C04B5/06 ,  C21B3/06 ,  C21B5/04 ,  C21C5/36 ,  C22B7/04 ,  Y02P10/212 ,  Y02W30/543

Abstract: In a method for producing puzzolanic or hydraulic grinding additives for the cement industry from basic oxidic'slags, in particular steel slags, using a metal bath for the reduction of metal oxides contained in the slags, the basicities of the liquid slags are adjusted to values lying 0.1 to 0.5 below the basicity value (CaO/SiO2) of the target slag prior to the reduction by adding acidic corrective substances such as, e.g., quartz sand and/or blast furnace slag and/or SiO2-containing corrective substances.

Abstract translation: 在使用金属浴来还原金属氧化物的方法中，从碱性氧化物渣，特别是钢渣生产水泥工业中的糊状或水硬性研磨添加剂的方法中，将液体渣的碱度调整为 在通过添加酸性矫正物质例如石英砂和/或高炉渣和/或含SiO 2的校正物质的还原之前，将0.1至0.5低于目标炉渣的碱度值（CaO / SiO 2）。

公开(公告)号：US5626646A

公开(公告)日：1997-05-06

申请号：US663724

申请日：1996-06-14

Applicant: David Krofchak

Inventor： David Krofchak

IPC: C04B5/06 ,  C04B7/147 ,  C04B7/19 ,  C04B18/14 ,  C04B28/02 ,  C21B3/04 ,  C21B3/06 ,  C22B7/04 ,  C21B15/00

CPC classification number: C04B28/02 ,  C04B18/144 ,  C04B5/06 ,  C04B7/147 ,  C04B7/19 ,  C21B3/04 ,  C21B3/06 ,  C22B7/04 ,  Y02P10/212 ,  Y02P40/143 ,  Y02W30/542 ,  Y02W30/543 ,  Y02W30/94

Abstract: A method of recovering metals and producing a secondary slag from base metal smelter slag produced by a copper or nickel smelter includes mixing the smelter slag with at least one reducing agent selected from the group consisting of carbon and aluminum, said carbon (if present) being from about 1% to about 10% by weight of the slag and said aluminum (if present) being from about 5 to about 30% by weight of the slag, and with from zero to about 60% calcium oxide by weight of the slag. The mixture is heated above the eutectic melting point thereof directly and to ignition temperature aluminothermically (if aluminum is present as reducing agent) to reduce the iron silicate to ferrosilicon containing substantially all the copper, nickel and cobalt which was in the smelter slag and form a secondary slag comprising at least one compound selected from the group consisting of calcium silicate, calcium aluminate and calcium iron aluminum silicate. The ferrosilicon is then separated from the secondary slag.

Abstract translation: 回收金属并由铜或镍冶炼炉生产的贱金属冶炼炉渣生产二次炉渣的方法包括将冶炼炉渣与至少一种选自碳和铝的还原剂混合，所述碳（如果存在）为 炉渣的重量的约1％至约10％，所述铝（如果存在）为炉渣的约5至约30重量％，并且以炉渣重量计为零至约60％的氧化钙。 将混合物直接加热到高于其共晶熔点的地方，并将铝热成型（如果铝以还原剂的形式存在），以将铁硅酸盐还原成含有基本上所有的在冶炼炉渣中的所有铜，镍和钴的硅铁，并形成 包含至少一种选自硅酸钙，铝酸钙和硅酸钙铁铝的化合物的二次炉渣。 然后将硅铁与二次炉渣分离。

公开(公告)号：US4778523A

公开(公告)日：1988-10-18

申请号：US067429

申请日：1987-06-24

Applicant: Masao Tomari ,  Jutaro Yoshimori

Inventor： Masao Tomari ,  Jutaro Yoshimori

IPC: C04B5/06 ,  C04B28/14 ,  C09K17/02 ,  C21B3/06 ,  B22F1/00

CPC classification number: C09K17/02 ,  C04B18/142 ,  C04B28/08 ,  C04B28/14 ,  C04B5/06 ,  C21B3/06 ,  Y02W30/543 ,  Y02W30/94

Abstract: A process for making a binder from steelmaking slag. About 5-30 wt. % of a reforming agent selected from the group consisting of silicate rock, mineral, calamine, glass waste, foundry waste sand, waste brick, red mud, volcanic spouting matter, blast furnace slag, desilica slag, iron oxide and mixtures thereof is added to a molten steelmaking slag, causing a molten reaction forming a reacted steelmaking slag. The reacted steelmaking slag is rapidly cooled to form a powder. Iron is removed from the powder and the powder is then mixed with from about 3-5 wt. % of a powder selected from the group consisting of lime, plaster, cement and mixtures thereof, which can then be used as a binder for pellets or briquettes.

Abstract translation: 炼钢渣生产粘合剂的方法。 约5-30重量 选自硅酸盐岩，矿物，火胺，玻璃废物，铸造废砂，废砖，红泥，火山喷发物质，高炉渣，脱硫渣，氧化铁及其混合物的重整剂的％添加到 一个熔炼钢渣，引起熔融反应，形成反应炼钢渣。 反应后的炼钢渣快速冷却，形成粉末。 从粉末中除去铁，然后将粉末与约3-5wt。 ％的选自石灰，石膏，水泥及其混合物的粉末，其然后可以用作颗粒或团块的粘合剂。

公开(公告)号：US4165991A

公开(公告)日：1979-08-28

申请号：US498643

申请日：1974-08-19

Applicant: Heinrich ZUR Strassen ,  Eberhard Rauschenfels

Inventor： Heinrich ZUR Strassen ,  Eberhard Rauschenfels

IPC: C04B5/06 ,  H05H1/28 ,  C04B35/04 ,  C04B35/06

CPC classification number: C01B33/22 ,  C01B33/24 ,  C04B5/06 ,  H05H1/28

Abstract: A method for the production of synthetic wollastonite material. The treatment involves slag melt which is obtained during the thermal production of phosphorous from crude phosphate. This slag is then treated with water under a preferred embodiment and burned at a certain temperature in an oxidizing atmosphere.

Abstract translation: 一种生产合成硅灰石材料的方法。 该处理涉及在从磷酸生产过程中产生磷的过程中获得的炉渣熔体。 然后在优选的实施方案中用水处理该炉渣，并在氧化气氛中在一定温度下燃烧。