ES2356976B1 - PROCEDURE FOR USE OF BLACK ESCORIES PRODUCED IN THE ELECTRIC ARC OVEN, PRODUCT OBTAINED AND USE OF THIS PRODUCT. - Google Patents
PROCEDURE FOR USE OF BLACK ESCORIES PRODUCED IN THE ELECTRIC ARC OVEN, PRODUCT OBTAINED AND USE OF THIS PRODUCT. Download PDFInfo
- Publication number
- ES2356976B1 ES2356976B1 ES200901934A ES200901934A ES2356976B1 ES 2356976 B1 ES2356976 B1 ES 2356976B1 ES 200901934 A ES200901934 A ES 200901934A ES 200901934 A ES200901934 A ES 200901934A ES 2356976 B1 ES2356976 B1 ES 2356976B1
- Authority
- ES
- Spain
- Prior art keywords
- black
- hae
- clay
- electric arc
- calcium oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010891 electric arc Methods 0.000 title claims abstract description 17
- 239000002893 slag Substances 0.000 claims abstract description 44
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 8
- 238000002386 leaching Methods 0.000 claims abstract description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical class [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 18
- 239000004927 clay Chemical class 0.000 claims description 17
- 239000000292 calcium oxide Substances 0.000 claims description 10
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 10
- 239000011159 matrix material Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 238000001033 granulometry Methods 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims 2
- 239000004571 lime Substances 0.000 claims 2
- 229910052570 clay Chemical class 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- -1 calcium aluminates Chemical class 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Procedimiento para utilización de escorias negras producidas en horno de arco eléctrico, producto obtenido y uso de dicho producto.#La presente invención tiene por objeto un procedimiento para utilización de escorias negras producidas en horno de arco eléctrico (HAE), al producto obtenido con dicho procedimiento y al uso de dicho producto, donde el procedimiento comprende una etapa de mezclado que permite la disminución de la lixiviación de metales pesados de las escorias negras producidas en las acerías de horno de arco eléctrico.Procedure for the use of black slags produced in an electric arc furnace, product obtained and use of said product. # The present invention has as its object a procedure for using black slags produced in an electric arc furnace (HAE), to the product obtained with said procedure and the use of said product, where the process comprises a mixing stage that allows the reduction of heavy metal leaching of the black slags produced in the electric arc furnace mills.
Description
cio/derivados del óxido cálcico formándose silicatos Cio / calcium oxide derivatives forming silicates
Procedimiento para utilización de escorias negras producidas en horno de arco eléctrico, producto obtenido y uso de dicho producto. Objeto de la invenciónProcedure for using black slags produced in an electric arc furnace, product obtained and use of said product. Object of the invention
La presente invención tiene por objeto un procedimiento para utilización de escorias negras producidas en horno de arco eléctrico (HAE), al producto obtenido con dicho procedimiento y al uso de dicho producto. The subject of the present invention is a process for using black slags produced in an electric arc furnace (HAE), the product obtained with said procedure and the use of said product.
El procedimiento comprende una etapa de mezclado que permite la disminución de la lixiviación de metales pesados de las escorias negras producidas en las acerías de horno de arco eléctrico. Antecedentes de la invención The process comprises a mixing stage that allows the reduction of heavy metal leaching from the black slags produced in the electric arc furnace mills. Background of the invention
Un porcentaje de las escorias negras producidas en horno de arco eléctrico (HAE) no cumplen con los requisitos medioambientales necesarios para su revalorización y aplicación en obra civil, teniendo como destino final el vertedero. A percentage of the black slags produced in an electric arc furnace (HAE) do not meet the environmental requirements necessary for their revaluation and application in civil works, with the landfill as the final destination.
Se conoce que las escorias negras producidas en el HAE son sometidas a un proceso de lavado anterior a su uso, para disminuir los niveles de lixiviado y cumplir de esa forma los requisitos medioambientales, permitiendo su reutilización. It is known that the black slags produced in the HAE are subjected to a washing process prior to use, to reduce the levels of leachate and thus comply with the environmental requirements, allowing its reuse.
Asimismo se conoce que los niveles de lixiviación de metales pesados de las escorias negras tras ese proceso de lavado, aún superan en muchos casos los limites de lixiviado permitidos para su reutilización. It is also known that the levels of leaching of heavy metals from black slags after this washing process, still in many cases exceed the limits of leaching allowed for reuse.
Se observa por tanto que los niveles de lixiviado obtenidos son mayores a los requerimientos máximos establecidos, por lo que la escoria negra producida en las acerías de horno de arco eléctrico no puede ser reutilizada debido a que mantiene un alto contenido en metales pesados, con lo que no se cumplen los requisitos medioambientales necesarios. It is therefore observed that the leachate levels obtained are higher than the maximum established requirements, so the black slag produced in electric arc furnace mills cannot be reused because it maintains a high content of heavy metals, with that the necessary environmental requirements are not met.
La presente invención solventa los inconvenientes anteriores al llevar a cabo un procedimiento de mezcla mediante el cual se encapsulan los elementos contaminantes de la escoria negra de HAE y se evita la contaminación medioambiental pudiendo reutilizar de esta forma dichas escorias negras en diferentes aplicaciones. Descripción de la invenciónThe present invention solves the above drawbacks by carrying out a mixing process whereby the contaminating elements of the HAE black slag are encapsulated and environmental contamination is avoided by being able to reuse said black slags in different applications. Description of the invention
La presente invención se refiere a un procedimiento para utilización de escorias negras de horno de arco eléctrico (HAE), al producto obtenido con dicho procedimiento y al uso de dicho producto. The present invention relates to a process for the use of black slags from an electric arc furnace (HAE), to the product obtained with said procedure and to the use of said product.
El procedimiento comprende una etapa de mezclado en la que se ponen en contacto las escorias negras con derivados del óxido de calcio y arcilla, de manera que se evita el lixiviado de los metales pesados al entorno. The process comprises a mixing stage in which the black slags are brought into contact with calcium oxide and clay derivatives, so that the leaching of heavy metals into the environment is avoided.
En dicha etapa de mezclado se forma una matriz que encapsula las escorias negras producidas en los hornos de arco eléctrico, evitando el lixiviado de los metales pesados al medioambiente. In said mixing stage a matrix is formed that encapsulates the black slags produced in electric arc furnaces, avoiding the leaching of heavy metals to the environment.
Tras el mezclado entre los diferentes componentes en una planta mezcladora o alternativamente en una mezcladora in situ, los granos de escoria negra y aluminatos cálcicos que generan la matriz encapsuladora de la escoria negra. After mixing between the different components in a mixing plant or alternatively in an in situ mixer, the black slag grains and calcium aluminates that generate the black slag encapsulating matrix.
El producto obtenido mediante el procedimiento anterior presenta también unas buenas propiedades geotécnicas, lo que le hace útil para su uso en obras lineales, firmes, explanadas o bases y subbases de carreteras. Realización preferente de la invenciónThe product obtained through the previous procedure also has good geotechnical properties, which makes it useful for use in linear works, fi rms, esplanades or bases and subbases of roads. Preferred Embodiment of the Invention
A la vista de lo anteriormente enunciado, la presente invención se refiere a un procedimiento para utilización de escorias negras de HAE que comprende una etapa de mezclado en la que se ponen en contacto la escoria negra con óxido de calcio o derivados del óxido cálcico y arcilla, formando una matriz que encapsula la escoria negra, de manera que se evita la filtración de los metales pesados al entorno, lo que permite la ampliación de aplicaciones en las que se puede reutilizar la escoria negra evitando de esa forma su envió al vertedero. In view of the foregoing, the present invention relates to a method for using black slags of HAE comprising a mixing stage in which the black slag is contacted with calcium oxide or derivatives of calcium oxide and clay , forming a matrix that encapsulates the black slag, so that the filtration of heavy metals to the environment is avoided, which allows the expansion of applications in which the black slag can be reused, thus avoiding its sending to the landfill.
Las proporciones en peso de los diferentes elementos en la etapa de mezclado se encuentran dentro de los siguientes intervalos: The proportions by weight of the different elements in the mixing stage are within the following intervals:
-25-95% de escoria negra de HAE: -25-95% black HAE slag:
-10-75% de arcilla: -10-75% clay:
- --
- 0.1-20% de óxido de calcio o derivados del óxido cálcico respecto al peso total de la escoria negra de HAE más la arcilla, 0.1-20% calcium oxide or calcium oxide derivatives with respect to the total weight of black HAE slag plus clay,
siendo los subintervalos preferentes los siguientes: the preferred subintervals being the following:
-50-90% de escoria negra de HAE: -50-90% black HAE slag:
-20-50% de arcilla: -20-50% clay:
- --
- 0.1-8% de óxido de calcio o derivados del óxido cálcico respecto al peso total de la escoria negra de HAE más la arcilla. 0.1-8% calcium oxide or calcium oxide derivatives with respect to the total weight of black HAE slag plus clay.
La granulometría de la escoria negra está entre 0 y 100 mm y proviene directamente de la acería o de un gestor, donde ha sufrido un proceso de maduración, molienda y clasificación granulométrica. The granulometry of the black slag is between 0 and 100 mm and comes directly from the steel mill or a manager, where it has undergone a process of maturation, grinding and granulometric classification.
La arcilla puede provenir de diferentes fuentes siendo su procedencia habitual del desmonte o movimiento de tierras de la propia obra, y la proporción de sílice más alúmina en la misma deben ser mayores del 5%. The clay can come from different sources being its habitual origin of the clearing or movement of lands of the own work, and the proportion of silica more alumina in the same one must be greater than 5%.
Tras el mezclado entre los diferentes componentes en una planta mezcladora, los granos de escoria negra quedan recubiertos por la mezcla arcilla y óxido de calcio o derivados del óxido cálcico que forma silicatos y aluminatos cálcicos que generan la matriz encapsuladora de la escoria negra. After mixing between the different components in a mixing plant, the black slag grains are covered by the clay and calcium oxide mixture or calcium oxide derivatives that form calcium silicates and aluminates that generate the black slag encapsulating matrix.
No alteran la esencialidad de esta invención variaciones en materiales, forma, tamaño y disposición de los elementos componentes, descritos de manera no limitativa, bastando ésta para proceder a su reproducción por un experto. Variations in materials, shape, size and arrangement of the component elements, described in a non-limiting manner, do not alter the essentiality of this invention, being sufficient to proceed to its reproduction by an expert.
Claims (10)
- 1. one.
- Procedimiento para utilización de escorias negras producidas en horno de arco eléctrico (HAE) caracterizado porque comprende una etapa de mezclado en la que se ponen en contacto las escorias negras con óxido de calcio o derivados del óxido de calcio y arcilla, de manera que se evita la lixiviación de los metales pesados al entorno y donde se forma una matriz que encapsula las escorias negras. Procedure for using black slags produced in an electric arc furnace (HAE) characterized in that it comprises a mixing stage in which black slags are brought into contact with calcium oxide or calcium oxide and clay derivatives, so as to avoid the leaching of heavy metals to the environment and where a matrix is formed that encapsulates the black slags.
- 2. 2.
- Procedimiento para utilización de escorias negras producidas en horno de arco eléctrico (HAE) según reivindicación 1 caracterizado porque las proporciones en peso de los diferentes elementos en la etapa de mezclado se encuentran dentro de los siguientes intervalos: Procedure for using black slags produced in an electric arc furnace (HAE) according to claim 1, characterized in that the proportions by weight of the different elements in the mixing stage are within the following intervals:
- --
- 0.1-20% de óxido de calcio o derivados del óxido cálcico respecto al peso total de escoria negra de HAE más la arcilla. 0.1-20% calcium oxide or calcium oxide derivatives with respect to the total weight of black slag of HAE plus clay.
- --
- 0.1-8% de óxido de calcio o derivados del óxido cálcico respecto al peso total de escoria negra de HAE más la arcilla. 0.1-8% calcium oxide or calcium oxide derivatives with respect to the total black slag weight of HAE plus clay.
- 4. Four.
- Procedimiento para utilización de escorias negras producidas en horno de arco eléctrico (HAE) según reivindicación 1 caracterizado porque la granulometría de la escoria negra de HAE está entre 0 y 100 mm. Method for using black slags produced in an electric arc furnace (HAE) according to claim 1, characterized in that the granulometry of the black slag of HAE is between 0 and 100 mm.
- 5. 5.
- Procedimiento para utilización de escorias negras producidas en horno de arco eléctrico (HAE) según reivindicación 1 caracterizado porque las proporción de sílice más alúmina en la arcilla deben ser mayores del 5%. Method for using black slags produced in an electric arc furnace (HAE) according to claim 1, characterized in that the proportion of silica plus alumina in the clay must be greater than 5%.
- 6. 6.
- Producto obtenido mediante el procedimiento de las reivindicaciones anteriores caracterizado porque presenta forma de matriz encapsuladora. Product obtained by the process of the preceding claims characterized in that it has the form of an encapsulating matrix.
- 7. 7.
- Uso del producto de la reivindicación 6 caracterizado porque se emplea en obras lineales, firmes, explanadas o bases y subbases de carreteras. Use of the product of claim 6 characterized in that it is used in linear works, fi rms, esplanades or bases and subbases of roads.
- Categoría Category
- Documentos citados Reivindicaciones afectadas Documents cited Claims Affected
- X X
- GB 1218411 A (THERMOCRETE BAUPATENTE VERWETU) página 2, línea 20-página 3, línea1; reivindicaciones 1,3-4. 1-7 GB 1218411 A (THERMOCRETE BAUPATENTE VERWETU) page 2, line 20-page 3, line1; claims 1,3-4. 1-7
- X X
- JP 61048451 A (NIPPON JIRYOKU SENKO) resumen [en línea] recuperado de [WPI/Thompson]. 1-7 JP 61048451 A (NIPPON JIRYOKU SENKO) summary [online] retrieved from [WPI / Thompson]. 1-7
- A TO
- US 4726713 A (TALLARD GILBERT R) columna 3, línea 40-columna 4, línea 42. 1-7 US 4726713 A (TALLARD GILBERT R) column 3, line 40-column 4, line 42. 1-7
- A TO
- WO 8810243 A1 (BETHLEHEM STEEL CORP) páginas 2-4. 1-7 WO 8810243 A1 (BETHLEHEM STEEL CORP) pages 2-4. 1-7
- Categoría de los documentos citados X: de particular relevancia Y: de particular relevancia combinado con otro/s de la misma categoría A: refleja el estado de la técnica O: referido a divulgación no escrita P: publicado entre la fecha de prioridad y la de presentación de la solicitud E: documento anterior, pero publicado después de la fecha de presentación de la solicitud Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application
- El presente informe ha sido realizado • para todas las reivindicaciones • para las reivindicaciones nº: This report has been prepared • for all claims • for claims no:
- Fecha de realización del informe 30.11.2010 Date of realization of the report 30.11.2010
- Examinador A. Urrecha Espluga Página 1/4 Examiner A. Urrecha Espluga Page 1/4
- Novedad (Art. 6.1 LP 11/1986) Novelty (Art. 6.1 LP 11/1986)
- Reivindicaciones Reivindicaciones 1-7 SI NO Claims Claims 1-7 IF NOT
- Actividad inventiva (Art. 8.1 LP11/1986) Inventive activity (Art. 8.1 LP11 / 1986)
- Reivindicaciones Reivindicaciones 1-7 SI NO Claims Claims 1-7 IF NOT
- Documento Document
- Número Publicación o Identificación Fecha Publicación Publication or Identification Number publication date
- D01 D01
- GB 1218411 A (THERMOCRETE BAUPATENTE VERWETU) 06.01.1971 GB 1218411 A (THERMOCRETE BAUPATENTE VERWETU) 06.01.1971
- D02 D02
- JP 61048451 A (NIPPON JIRYOKU SENKO) 10.03.1986 JP 61048451 A (NIPPON JIRYOKU SENKO) 10.03.1986
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200901934A ES2356976B1 (en) | 2009-10-01 | 2009-10-01 | PROCEDURE FOR USE OF BLACK ESCORIES PRODUCED IN THE ELECTRIC ARC OVEN, PRODUCT OBTAINED AND USE OF THIS PRODUCT. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200901934A ES2356976B1 (en) | 2009-10-01 | 2009-10-01 | PROCEDURE FOR USE OF BLACK ESCORIES PRODUCED IN THE ELECTRIC ARC OVEN, PRODUCT OBTAINED AND USE OF THIS PRODUCT. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2356976A1 ES2356976A1 (en) | 2011-04-15 |
| ES2356976B1 true ES2356976B1 (en) | 2012-02-27 |
Family
ID=43821672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200901934A Active ES2356976B1 (en) | 2009-10-01 | 2009-10-01 | PROCEDURE FOR USE OF BLACK ESCORIES PRODUCED IN THE ELECTRIC ARC OVEN, PRODUCT OBTAINED AND USE OF THIS PRODUCT. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2356976B1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1218411A (en) * | 1968-03-13 | 1971-01-06 | Thermocrete Baupatente Verwetu | Improvements relating to methods of making mortar and concrete |
| JPS6148451A (en) * | 1984-08-13 | 1986-03-10 | 日本磁力選鉱株式会社 | Use of steel slag |
| US4726713A (en) * | 1986-06-16 | 1988-02-23 | Tallard Gilbert R | Self-hardening slurry mix |
| ZA883753B (en) * | 1987-06-18 | 1989-03-29 | Bethlehem Steel Corp | Process for chemical stabilization of heavy metal bearing dusts and sludge,such as eaf dust |
-
2009
- 2009-10-01 ES ES200901934A patent/ES2356976B1/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| ES2356976A1 (en) | 2011-04-15 |
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