| Date |
Title |
Summary |
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 Apr 10 |
The secondary industry is ready to restart |
2008: a star that became a black hole. So began our article, dated January, 2009, in which we asked Roberta Niboli, then Assiral president, to provide an overview on the state of aluminium recycling which had ended the previous year with a minus sign in front of all the sector’s indexes.
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Mar 10 |
The first zero emissions foundry |
From 2010, BMW's Landshut plant will boast the world's first foundry with emission-free sand core production.
The light-alloy foundry at the BMW plant is introducing a new production method for gravity diecasting, whereby conventional organic binders will be replaced by highly eco-friendly inorganic binders, which generate virtually no pollutant emissions.
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Oct 09 |
Disposal of ELV: what is the status? |
In May 2008 the Italian Ministry of the Environment, the Italian Ministry of Economic Development and the main associations of the automotive sector signed a “Framework agreement timetable for the management of end of life vehicles” with the aim of limiting the environmental impact of the waste resulting from the disposal of End of Life Vehicles (ELV). In April 2009, during the Metalriciclo meeting sessions, carmakers, motor vehicle demolishers and recycling associations discussed the topic during the encounter entitled “Experiences on the metal recovery in the end of life vehicles”.
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Jun 09 |
New technologies to very low environmental impact and reduced energy consumption for the recycling of lead acid batteries at end of life |
The first newly patented process in batteries scrap recycle involves lead paste.
By this new process, the lead paste is processed in presence of aqueous solutions at atmospheric pressure value and at low temperature value.
Lead compounds contained in lead paste is entirely recovered without any losses as very pure lead oxycarbonate which can easily be reduced into lead oxide and/or into lead oxysulphate: the raw materials needed for the batteries production.
This process can be also used to recover lead carbonate from galena. The main benefits of this new technology are listed.
1. Lead compounds content into lead paste is totally converted into lead oxycarbonate at a very high purity degree. (more than 99,99%). 2. Reactions on which the process is based are carried out at low temperature value and in presence of water solutions. 3. There are no waste emissions (either solid or liquid or gaseous). 4. Processing costs are lower than those of the traditional battery scrap recycling processes. 5. Co-product, synthesized by this process, is very pure Sodium Sulphate, which can easily be sold. 6. Co-product sale makes up for a large part of reagents. 7.Process equipment is well known and already utilized in many chemical processes.
The second newly patented process in batteries scrap recycling covers heavy plastics.
This new process allows recovering top quality silica, at low costs, and recovering lead which is mixed with plastic materials (approx. 3-6% w/w).
By pyrolysis, top-quality silica and hydrocarbons, useful as fuel for powering engines, are produced. The main benefits of this new process are summarized. 1. Heavy plastics don’t need to be delivered to special waste landfills, 2. lead compounds are recovered, 3. top-quality silica ( its price is now ranging at 6 Euros/Kg.) is recovered, 4. energy recovery.
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Apr 09 |
Advance immersion melting for scrap |
The historic and well established recycling aluminium sector continues to demand the continual
development of efficient metal recovery systems and with low environmental impact. The justification are provided from economic drivers, the intrinsic value of aluminium, end of life directives and with the every increasing demand to recycle scrap from a wide variety of various sources.
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Mar 09 |
New Developments for Achieving Environmentally Friendly Sinter Production |
Environmental aspects are already decisive criteria in the design and operation of sinter plants. It is now mandatory in many urban areas and municipalities that permission for the installation of new sinter plants or for the expansion of existing facilities will only be granted when strict environmental emission values are guaranteed. With conventional technologies it is often not possible to meet currently imposed emission limits - without even considering the continually increasing demands expected in the short- to mid-term future. Siemens VAI, a leading plant builder for the metallurgical industry, has therefore developed and implemented new technologies which enable environmental emissions in sinter production to be reduced to previously unattained levels.
This has been achieved with the introduction of a selective sinter-waste-gas recirculation system, referred to as eposint - jointly developed with the Austrian steel producer voestalpine Stahl - in addition to a new dry-type gas-cleaning system known as MEROS®, developed by Siemens VAI. Both of these processes are now in operation at the Sinter Plant No. 5 of voestalpine Stahl and the environmental benefits have exceeded expectations by far.
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Jul 08 |
Hints and remarks from the 8th IARC |
On the third issue of ‘Alluminio & leghe’ we dedicated a long article to the 8th IARC-International Automobile Recycling Congress held last March in Munich.
We have chosen three, among the several speeches given over the three days of the congress, that we think are the most significant, respectively by Rolf Willeke (German Association of Car Recyclers), Caroline Polders (Flemish Institute for Technological Research) and the connected speech by Dieter Myeller (Institute of Production and Logistics in Bremen), and by Chen Ming (University of Jiao Jong).
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May 08 |
Aluminium chips recycling |
The success of any melting system depends on the physical characteristics and nature of the feedstock, therefore, the integration of durable, efficient pre-treatment equipment is crucial in achieving full processing efficiency and hence, a high metal recovery and payback.
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Mar 08 |
Evolution of the fume testing systems |
The meeting ‘Environmental Impact and Sustainable Development’ – held at the territorial office of the Region Lombardy in Brescia on February 20th, 2008 – explained the Legislative Decree No 152/2006 which sets the values, the prescriptions, the sampling and analysis methods of the emissions, and tried to ‘tidy up’ a legislative scenario which has been characterized for years by a ‘jungle’ of decrees difficult to disentangle and which has now, thanks to the consolidated act, to be explained in a clear and suitable way.
Here follows an aspect the Decree deals with (text edited by Davide Peli – consulting services – and Federico Van Der Velden - Siram).
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Feb 08 |
The recycling of aluminium scrap |
Donau Carbon, based in Guanzate (Como), is an engineering company producing plants for the environmental protection using the pyrolysis process to recycle aluminium scrap.
Pyrolysis can be carried out through the direct or indirect heating inside a rotary furnace. The Siri-Donau Carbon technology is actually based on the direct heating allowing to obtain cleaner materials.
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