Browsing by Keyword "Foundry"
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Item Dioxinas en Cubilotes, Hornos Rotativos y de Arco Eléctrico: Métodos de Fusión Libres de Emisión para Fundiciones(2009-05) Meléndez-Arranz, Antton; Uribe-Astorquia, Leire; Tecnalia Research & InnovationThe emission limit value of the Incineration Directive is being assumed more and more by other industrial sectors. Following this and despite the BREF document developed by the EIPPCB does not establish a limit as an obligation to fulfil, European foundries have decided to tackle this problem which is becoming a common problem for many of them. In the first place, it has been determined the current situation in terms of dioxin emission in cupolas, rotary and electric arc furnaces as more probable equipments producing dioxins in the melting process of steel or cast iron. The scope includes not only determining the current situation (up streams) but implementing feasible and suitable capture systems (down streams). All these solutions customized for every studied furnaces.Item La medición rigurosa de emisiones brutas de partículas en la fusión de hierro como herramienta para su óptima gestión(2012) Meléndez-Arranz, Antton; Gutiérrez-Cañas Mateo, Cristina; Tecnalia Research & InnovationIn this article, the author is going to present the results of a large research project related to the particulate matter within the iron foundries melting shops. It was decided to analyze the raw emissions, in other words, emissions produced behind the fabric filters, in order to assure that obtained data could complete the available low quality databases for the foundry sector. After samplings and calculated amounts, the collected particles were analyzed and related to used raw materials and processes (the most common ones). Based on these results different and standardized emission factors will be proposed, justifying their usefulness or competitiveness improvement for foundries and taking into account environmental aspects. Additionally, these data are going to provide the manufacturers and designers of fabric filters who will find up in the results of this project the sufficient information for developing new techniques and devices in order to minimize the most critic and harmful particle fractions, where metals are present.Item New developments in hybrid use of induction and plasma heating technologies for melting and holding ferrous and non-ferrous alloys(World Foundry Organization, 2014) Eguizabal, D.; Cobos, L.; Iparraguirre, J. A.; Rodriguez, P.; Arocena, I.; CIRMETAL; Tecnalia Research & InnovationIn the following decade Europe will invest huge efforts to save energy and resources in energy intensive industrial processes. Foundry industry is one of the most energy intensive industries in the world and reducing this energy usage is a primary goal for the sector. The metal casting industry is heavily dependent on natural gas and electricity, and growing interest in energy efficiency has been driven by the impacts of energy cost volatility. Over the years, the foundry industry has been looking for an energy efficient rapid melting furnace with reduced losses from oxidation and contamination. The employ of hybrid heating technologies for foundry industry processes should be seen as one of the most innovative and efficient alternatives of the last years in the sector. This Research has the objective of assess the effect of hybridizing induction and plasma heating technologies in energy consumption for melting and holding ferrous and non-ferrous alloys. Tests have been carried out in a 125 litres capacity prototype using a plasma torch of 200 kW and an induction coil of 300 kW as maximum heating power. The materials used at these trials are commonly used at Aluminium and Cast Iron foundry industry, and the use of low-cost scraps has been specifically tested too. The main objective of the tests has been to measure the global energy consumption of melting and holding at casting temperature industrial alloys. An additional effect of the use of induction-plasma heating consists in increased melting rate. According to the methods presented, the energy supplied to the induction furnace and plasma device as well as melting duration counted from switching on the induction and plasma to overheating of the liquid metal to casting temperature was measured. It was found in next to industrial conditions that induction-plasma melting rate was significantly higher as compared to the single induction melting process. In the same way, the energy consumption is lower. The research carried out under these next to industrial conditions (1 ton of steel capacity furnace) has shown that the use of plasma torch in hybrid heating system with an induction furnace is effective, improves energetic indices of the melting process and increases the output of the induction furnace.Item New induction wireless manufacturing efficient process for energy intensive industries (NIWE)(Stowarzyszenie Techniczne Odlewnikow Polskich/Polish Foundrymen's Association, 2018) Meléndez, A.; Obregón, A.; Tecnalia Research & Innovation; PROMETAL