ES2356976A1 - Procedure for the use of black slides products in electric arc oven, product obtained and use of such product (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the use of black slides products in electric arc oven, product obtained and use of such product (Machine-translation by Google Translate, not legally binding) Download PDFInfo
- Publication number
- ES2356976A1 ES2356976A1 ES200901934A ES200901934A ES2356976A1 ES 2356976 A1 ES2356976 A1 ES 2356976A1 ES 200901934 A ES200901934 A ES 200901934A ES 200901934 A ES200901934 A ES 200901934A ES 2356976 A1 ES2356976 A1 ES 2356976A1
- Authority
- ES
- Spain
- Prior art keywords
- black
- hae
- electric arc
- procedure
- slag
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000010891 electric arc Methods 0.000 title claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 8
- 238000002386 leaching Methods 0.000 claims abstract description 5
- 239000004927 clay Substances 0.000 claims description 14
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 12
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 239000011159 matrix material Substances 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- 239000000292 calcium oxide Substances 0.000 claims description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 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
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- -1 calcium aluminates Chemical class 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006232 furnace black Substances 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
- YFONKFDEZLYQDH-BOURZNODSA-N indaziflam Chemical compound CC(F)C1=NC(N)=NC(N[C@H]2C3=CC(C)=CC=C3C[C@@H]2C)=N1 YFONKFDEZLYQDH-BOURZNODSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 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
- 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
-
- 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
-
- 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
Abstract
Description
Procedimiento para utilización de escorias negras producidas en horno de arco eléctrico, producto obtenido y uso de dicho producto.Slag use procedure black produced in electric arc furnace, product obtained and use of said product.
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 present invention aims at a procedure for using black slags produced in electric arc furnace (HAE), to 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.The process comprises a mixing stage. which allows the reduction of heavy metal leaching of black slags produced in arc furnace steelworks electric.
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 electric arc furnace (HAE) do not meet the requirements environmental requirements for revaluation and application in civil work, having as final destination the landfill.
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 black slags produced in The HAE are subjected to a washing process prior to use, to decrease leachate levels and thereby comply with 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 heavy metal leaching from black slags after that washing process, they still exceed in many cases the limits of leachate 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 levels of leachate obtained are greater than the maximum requirements established, so the black slag produced in steel mills Electric arc furnace cannot be reused because maintains a high content of heavy metals, so it is not meet the necessary environmental requirements.
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.The present invention solves the previous inconveniences when carrying out a procedure of mixture by which the contaminating elements of the black slag from HAE and environmental pollution is avoided being able to reuse in this way such black slags in Different applications
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 procedure for using arc furnace black slags electrical (HAE), the product obtained with said procedure and 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 black slags are contacted with derivatives of calcium oxide and clay, so that leachate from Heavy metals to the environment.
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 which encapsulates the black slags produced in arc furnaces electrical, avoiding the leaching of heavy metals to environment.
Tras el mezclado entre los diferentes componentes en una planta mezcladora o alternativamente en una mezcladora in situ, los granos de escoria negra quedan recubiertos por la mezcla arcilla-óxido de calcio/derivados del óxido cálcico formándose silicatos 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 are covered by the clay-calcium oxide / calcium oxide mixture forming silicates and calcium aluminates that generate the encapsulating matrix of black slag
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.The product obtained by the procedure previous also presents good geotechnical properties, what which makes it useful for use in linear, firm, esplanade or bases and subbases of roads.
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 The present invention relates to a method for using black slags of HAE comprising a mixing stage in which 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, which allows the expansion of applications where black slag can be reused thus avoiding his shipment 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 slag of HAE:
- --
- 10-75% de arcilla:10-75% of 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% oxide calcium or calcium oxide derivatives with respect to the total weight of the HAE black slag plus clay,
siendo los subintervalos preferentes los siguientes:the preferred subintervals being following:
- --
- 50-90% de escoria negra de HAE:50-90% black slag of HAE:
- --
- 20-50% de arcilla:20-50% of 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% oxide calcium or calcium oxide derivatives with respect to the total weight of the 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 classification granulometric
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 earthmoving of the work itself, and the proportion of silica plus alumina in it They 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, black slag grains are coated by the mixture clay and calcium oxide or calcium oxide derivatives that form silicates and aluminates calcium that generate the encapsulating matrix of the slag black
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.They do not alter the essentiality of this invention variations in materials, shape, size and arrangement of component elements, described in a non-limiting manner, sufficient this one to proceed to its reproduction by an expert.
Claims (9)
- --
- 25-95% de escoria negra de HAE:25-95% black slag of HAE:
- --
- 10-75% de arcilla:10-75% of clay:
- --
- 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% oxide calcium or calcium oxide derivatives with respect to the total weight of black HAE slag plus clay.
- --
- 50-90% de escoria negra de HAE:50-90% black slag of HAE:
- --
- 10-50% de arcilla:10-50% of 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% oxide calcium or calcium oxide derivatives with respect to the total weight of black HAE slag plus clay.
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 true ES2356976A1 (en) | 2011-04-15 |
| ES2356976B1 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) |
Citations (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 |
| WO1988010243A1 (en) * | 1987-06-18 | 1988-12-29 | Bethlehem Steel Corporation | Process for chemical stabilization of heavy metal bearing dusts and sludges, such as eaf dust |
-
2009
- 2009-10-01 ES ES200901934A patent/ES2356976B1/en active Active
Patent Citations (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 |
| WO1988010243A1 (en) * | 1987-06-18 | 1988-12-29 | Bethlehem Steel Corporation | Process for chemical stabilization of heavy metal bearing dusts and sludges, such as eaf dust |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2356976B1 (en) | 2012-02-27 |
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|---|---|---|---|
| FG2A | Definitive protection |
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