Recycling Of Non-ferrous Metals Research Articles

Design and Manufacturing of Metal & Non-metal Sorting Using Metal Detector

Abstract: In recent years, sorting of scrap material using various automated techniques has gained a lot of focus. One of the multiple steps in the recycling of non-ferrous metals is the separation of shredded material into different groups. In our project, we propose the concept of "Metal & Non-metal Sorting Using Metal Detector". This system of sorting products is optimized to differentiate between metal & non-metals product, which is done with the help of a metal detector. A continuous conveyor belt carries the different products, and with the help of a control motor it separates metal from non-metal. In a nutshell, this system consists of a metal sensor. When the conveyor belt carries the products, it goes through a metal detector, if it's a metal product the control motor separates it with the help of a bar and the skipped product goes further to another container for non-metal. GSM technique is also introduced for mobiles messaging. The counter displays the metal count. This project is useful in automobile industries, steel plants and industry for separation of metal and non-metal element in the industry on a large basis. It can also be used for waste management so also beneficial for the environment.

Recovery of Non-Ferrous Metals from PCBs Scrap by Liquation from Lead.

This article presents the results of research on the recycling of non-ferrous metals from PCB scrap using melting in metallic lead. The idea of this process is to dissolve (transfer) metals from PCB scrap in lead, and then liquation them by cooling the lead-metals alloy. PCB scrap was crushed and then melted into liquid lead. The lead after process was then poured into the casting mold and its chemical composition was examined. Among the various metals in the PCB scrap, copper and tin in particular are dissolved in lead. The more scrap dissolved in lead, the higher the concentration of copper and tin in the alloy. The highest obtained concentration of copper in lead were about 2.2 wt.%, and for tin about 0.8 wt.%.

Recovering Aluminium for Recycling in Reusable Backyard Foundry that Melts Aluminium Cans

In a world which is increasingly demanding sustainability, nonferrous metal recycling has become a very important practice. Millions of tons of nonferrous scrap are recovered annually and used by smelters, refiners, ingot makers, foundries, and other manufacturers. Secondary materials are essential to the industry’s survival because even new metals often require the combined use of recycled materials. The recovered materials are melted down in a furnace, poured into casters and shaped into ingots. These ingots are either used in the foundry industry or they can be transformed into flat sheets and other wrought products, which are then used to manufacture new products. Aluminium offers intelligent and practical solutions to recovering for recycling. The main activities described in this article are carried out during the experimental phase of the research and they are oriented towards the recovering aluminium for recycling. The objective of the research is to develop some recycling facilities for re–smelt and re–cast of aluminium by using charcoal briquettes into a mini metal foundry, designed and manufactured in laboratory. In this research we experimented a reusable backyard foundry that melts aluminium cans (soda and beer) easily and safely.

Analysis of recycling of non-ferrous metals as a part of recycling of sea-going ships

The object of research is the processes of recycling non-ferrous metals in the recycling of sea-going ships. Recycling is the main direction for development of non-ferrous metallurgy. As the world experience shows, the use of secondary raw materials is more economically effective and environmentally safer than the use of primary resources. One of the most problematic places is the lack of recycling and modern environmental recycling technologies in Ukraine. In the study, the analysis method was used to study the dynamics of copper production in the world and the method of classification when considering the properties, the use of non-ferrous metals in shipbuilding, and also when identifying potential consumers of non-ferrous metals . In paper the analysis of properties of non-ferrous metals used in ship-building is carried out, their application in a ship design is shown. The analysis of enterprises of Ukraine, which are the main potential consumers of non-ferrous metals, as recyclables, is carried out. The largest non-ferrous metal processing plant in Ukraine – OJSC «Non-Ferrous Metals Processing Plant» (Bakhmut) – uses only non-ferrous scrap as its raw material. The rationale for the role of secondary scrap in the development of the production of non-ferrous metals in Ukraine is obtained. The dynamics of copper production in the world is analyzed. It is emphasized that the methodology used in Ukraine for assessing the benefits of different recycling classes is obsolete and does not allow correctly calculating the revenue and expenditure parts and assessing the risks. Due to the changes in the integrated approach in assessing the economic efficiency of the use of new technologies in production, the adoption of the state program for the recycling of sea-going ships can provide an increase in annual profits, the period of recoupment of costs, profitability, and the percentage of non-ferrous metal recycling.

Optimization of wet shaking table process using response surface methodology applied to the separation of copper and aluminum from the fine fraction of shredder ELVs

With the purpose of reducing the waste generated by end-of-life vehicles (ELVs) by enhancing the recovery and recycling of nonferrous metals, an experimental study was conducted with the finest size fraction of nonferrous stream produced at an ELV shredder plant. The aim of this work was to characterize the nonferrous stream and to evaluate the efficiency of a gravity concentration process in separating light and heavy nonferrous metal particles that could be easily integrated in a ELV shredder plant (in this case study the separation explicitly addressed copper and aluminum separation). The characterization of a sample of the 0–10mm particle size fraction showed a mixture of nonferrous metals with a certain degree of impurity due to the present of contaminants such as plastics. The majority of the particles exhibited a wire shape, preventing an efficient separation of materials without prior fragmentation. The gravity concentration process selected for this study was the wet shaking table and three operating parameters of the equipment were manipulated. A full factorial design in combination with a central composite design was employed to model metals recovery. Two second order polynomial equations were successfully fitted to describe the process and predict the recovery of copper and aluminum in Cu concentrate under the conditions of the present study. The optimum conditions were determined to be 11.1° of inclination, 2.8L/min of feed water flow and 4.9L/min of wash water flow. All three final products of the wet shaking table had a content higher than 90% in relation to one of the metals, wherein a Cu concentrate product was obtained with a Cu content of 96%, and 78% of Cu recovery and 2% of Al recovery.

非鉄金属リサイクルの現状について

非鉄金属リサイクルの現状について

Book Review : The Recycling of Non-Ferrous Metals by Michael Henstock. A publication by the International Council on Metals and the Environment (ICME) 294 Albert Street, Ottawa, Ontario, Canada KIP 6E6, 360 pages $27.00 (1996)

Book Review : The Recycling of Non-Ferrous Metals by Michael Henstock. A publication by the International Council on Metals and the Environment (ICME) 294 Albert Street, Ottawa, Ontario, Canada KIP 6E6, 360 pages $27.00 (1996)

A review of: “The Recycling of Non-Ferrous Metals (1996)”, Michael Henstock, The International Council on Metals and the Environment, Ottawa.

A review of: “<i>The Recycling of Non-Ferrous Metals (1996)</i>”, Michael Henstock, The International Council on Metals and the Environment, Ottawa.

Recycling effects on the composition of non-ferrous metals

As in steel, the basic problem in the recycling of non-ferrous metals is the dispersion of individual metals or alloys in composite artefacts and in mixed scrap loads. A general view of the non-ferrous situation is not easily achieved, and recycling effects tend, in the natural thermodynamic order of things, to be specific to particular metals. There are, however, some overall differences from iron and steel which arise in relation to the intrinsic value of the materials themselves, their use both as high purity metals as well as in alloys (which has led to long-established refining techniques), and the potential for scrap use in the production of chemicals. The statistics of reuse are considered for Al, Cu, Zn, Pb and Ni, and the ways in which some specific impurities are dealt with are considered. Aspects of ‘design for recycling' are introduced.

The recycling of metals—II. Nonferrous metals

This paper deals primarily with the recycling of copper, aluminium, lead and zinc and also with some aspects of that of other nonferrous metals. Nonferrous metal recycling is highly developed. Home scrap, prompt industrial scrap and old scrap are recovered. Old scrap is most important for metals such as copper which have been in use for a long time. Nonferrous scrap is beginning to be recovered by auto shredders. The recovery of nonferrous metals from municipal solid waste will mainly involve aluminium. The nonferrous secondary industry collects, sorts and physically processes scrap. Some scrap, in particular copper and lead, is metallurgically processed either in primary or secondary circuits; others, such as aluminium, are usually recovered in separate secondary circuits. The purity of the scrap determines the extent of processing carried out. Alloys are largely recovered as alloys. The secondary metals produced may be of the same quality as primary metals but some are of lower quality and are used in appropriate applications. Prompt industrial and old scrap make appreciable contributions to supplies; they are ca. 50% of current consumption for copper and lead and ca. 20% for aluminium. Secondary production of nonferrrous metals is less capital-intensive, consumes less energy and tends to be less polluting than primary production.