Resal - grupo-otua.com

Resal. Our company specialises in recovering salt slag generated in the aluminium recycling process. We use our own technology to provide a "green" solution and offer a comprehensive service for managing the waste generated by the secondary smelting process at aluminium refineries. Our recycling process is based on classifying the different ...

Aluminum Dross Furnace Salt Slags Processing

May 31, 2017· Disposal of the salt slag produced during the processing of aluminum dross and scrap is of particular interest to the secondary aluminum industry. Melting of these materials is carried out under a salt flux cover to dissolve the contaminants, mostly aluminum oxide, and to optimize the recovery of aluminum metal.

Metal Entrapment in Slag during the Aluminium Recycling ...

Metal losses are due to two main reasons during an aluminium recycling process in Tilting Rotary Furnace with salt use: oxidation and metal entrapment in the salt slag. The oxidized metal cannot be recovered again, which is not the case of entrapped metal: the droplets have to settle down through the salt slag in order to get back to the metal ...

Aluminium salt slag characterization and utilization--a ...

Aluminium salt slag (also known as aluminium salt cake), which is produced by the secondary aluminium industry, is formed during aluminium scrap/dross melting and contains 15-30% aluminium oxide, 30-55% sodium chloride, 15-30% potassium chloride, 5-7% metallic aluminium and impurities (carbides, nitrides, sulphides and phosphides).

Development of aluminium scrap melting technology

aluminium slags recycling. ... Salt slag was placed in mucks, which nowadays is developed by attempts of small enterprises. Shot metal, recovered on the Spanish line ... There is given a brief review of technology of melting and refining of secondary aluminium alloys. …

Aluminium recycling and environmental issues of salt slag ...

Jan 01, 2005· Salt slags are the byproducts of the secondary aluminium industry, which should be recycled and processed in a proper way by taking the environmental impact into consideration. This article provides qualitative assessment on 10 different commercial aluminium scraps for their relative recyclability via well-designed and controlled laboratory ...

Aluminum Waste Recycling by BEFESA

Salt Slag Recycling. Befesa's aluminum waste recycling system involves the recovery and integral valorization of all the waste generated by the aluminum industry and also the goods produced from aluminium at the end of its life cycle. It is precisely the salt slag recycling business that brings this process round full circle and makes it a ...

Ultromex remediates salt slag landfill site in Europe ...

The company has assembled a team of engineers and chemistry experts to work with both primary and secondary aluminium smelters designing, building, installing and operating plants to treat a range of aluminium industry wastes including dross, salt slag (salt cake) and spent pot lining.

ARTICLE: Secondary Aluminum Processing Waste – Ensuring ...

Nov 14, 2018· However, aluminum recycling also generates waste products and these are referred to as secondary aluminum processing wastes, which are comprised of two components. By far the largest in terms of generation is saltcake, which is the slag generated during the recovery of aluminum scrap and dross in rotary furnaces.

Recycled Alumina from Aluminium Salt Slag: Origins ...

Aluminium Granules Returned to secondary aluminium production cycle Salt Returned to refiners for melting process Recycled Alumina (Valoxy) Non-metallurgical applications as substitute bauxite/alumina The conversion of salt slag, a hazardous waste of the aluminium …

Aluminium dross recycling - Wikipedia

Thermo-mechanical metal extraction. The mechanical process of recycling does not use any toxic chemicals previously used in the process of extracting the valuable aluminium in the dross.. Hot dross processing system whereby the majority of metal is recovered without chemically reducing the aluminium oxides. The dross is first crushed then separated into aluminium metal rich particles and ...

Aluminum Scraps Recycling Melting Furnace Manufacturer

Fig.1 shows a typical secondary Aluminum recycling with the rotary furnace process. ... between the salt and the metal [4], and hinders the metal separation from ... The molten metal and the salt slag were shortly stirred with an alumina rod, and quickly put …

A synthetic source of alumina from aluminium slags - …

salt slag. This salt slag is a hazardous waste which must be disposed of under controlled conditions. Historically, in Europe, aluminium salt slag was landfilled. More recently, a combination of tighter environmental regulation and high landfill costs has terminated this practice. Instead, aluminium salt slag is recycled in dedicated plants ...

Recycling of waste from the

•Salt protects metal from oxidation and facilitates removal of impurities •Molten aluminum is separated from molten salt and solids •Aluminium ingots are cast •Salt with solids solidified, resulting in salt cake •Salt cake is sent to the UK for recycling •Salt for reuse in process •Aluminium …

New Dry Recycling System for Aluminium Salt Cake from ...

Apr 28, 2016· A simplified dry recycling process to recover the 5-10% of aluminium which remains in the aluminium salt cake produced in the smelting process of secondary aluminium, has been developed by German recycling equipment manufacturer, -Sonthofen. According to the company, to date the recovery of this aluminium has thus far proven difficult, costly and time consuming.

Aluminium Recycling and Flowsheet Simulation

Exercise. Aluminium production from secondary sources (with exercise) Exercise: Hall-Héroult process. The industrial aluminium recycling process (with exercise) Pre-treatment. Melting furnaces and additions. Exercise - Processing of salt slag. Solution - Processing of salt slag. 3.

Method of recycling salt slag aluminum production

The closest in technical essence of the present invention is a method of recycling of salt slag secondary aluminum production by washing it with water, followed by drying the obtained precipitate at a temperature of 100-110 o With its grinding, to obtain a powder, which is used in the preparation of concrete mixture as a blowing agent [4].

Maximising revenue streams from dross generation and …

To provide a cost effective solution for recycling salt slag at source of generation From 1000tpy to 20,000tpy Benefits:- Massive reduction in transportation of salt slag around Europe Fuel cost savings Environmental issues reduced CO 2 footprint reduction Re-use of own salt (avoids other things being in it) Re-use of own aluminium

Rio Tinto signs up Ultromex to treat landfill aluminium ...

Nov 16, 2020· Salt slag, also referred to as salt cake or black dross is a waste material generated by secondary aluminium processing (the recycling and smelting of new aluminium from aluminium scrap, dross and other industry wastes). Due to its reactivity with water and the nature of the contaminants it contains, salt slag (or salt cake as it sometimes ...

Saltcake | The Aluminum Association

Jun 01, 2021· Saltcake is the slag generated during the recovery of aluminum in Rotary Furnaces. To maximize metal recovery, a salt flux is often added to aluminum scrap and dross in the recovery process, and the residue resulting from that aluminum recovery process is referred to as saltcake or saltslag. Saltcake typically contains 3-10% metallic aluminum ...

Salt Cake Recycling - Salt slag recycling / salt cake ...

Salt cake is an unavoidable waste product from the secondary aluminum smelting. It is a hazardous waste stream with landfill banned in many counties. Treatment options to remediate salt cake are few; those that are available are expensive.

RVA Process – RVA – Recycling

Firstly, salt slag is milled with optional recirculation to liberate aluminium by eddy current separator and iron by magnet. Fine particulate from the mill plant is removed by a de-duster. (2) Dissolution/Reaction. Next, the remaining salty material is introduced to a dissolution section where it is mixed with water (recovered later in the ...

Befesa Aluminium :: Salt slags and SPL Recycling Services

Salt slags and SPL Recycling Services. Through a 5 steps process: Service, collection and transporting of hazardous residues. Milling and sorting depending on the corn measure from the received residue. Reaction and dissolution of the hazardous components and salts. Separation and washing of the secondary oxide products. Crystallisation of salts.

Origins of Aluminium Salt Slag – RVA – Recycling

Origins of Aluminium Salt Slag. In the aluminium refining process, scrap is melted in rotary or reverbatory furnaces under a bath of molten salt which floats on the metal surface. The salt is typically a eutectic or near-eutectic mixture of sodium and potassium chlorides …

Recycling Nickel Slag by Aluminum Dross: Iron-extraction ...

KEY WORDS: recycling; nickel slag; aluminum dross; iron-exaction; secondary slag stabilization. base and precious metals, and in the past years, extensive researches have been carried out.12–16) Although most of the works are focused on the copper and other waste slags, the thermal reduction techniques they used can still provide lots of ...

Aluminium salt slag characterization and utilization – A ...

May 30, 2012· Aluminium salt slag (also known as aluminium salt cake), which is produced by the secondary aluminium industry, is formed during aluminium scrap/dross melting and contains 15–30% aluminium oxide, 30–55% sodium chloride, 15–30% potassium chloride, 5–7% metallic aluminium and impurities (carbides, nitrides, sulphides and phosphides).

Aluminium recycling and environmental issues of salt slag ...

Salt slags are the byproducts of the secondary aluminium industry, which should be recycled and processed in a proper way by taking the environmental impact into consideration. This article provides qualitative assessment on 10 different commercial aluminium scraps for their relative recyclability via well-designed and controlled laboratory ...

Secondary aluminum (REKAL) - K+S Aktiengesellschaft

It is even better to think the recycling idea through. K+S recycles salt slag from the secondary aluminum industry completely residue-free. By this we mean: completely, one hundred percent. Our specially developed REKAL® plant extracts the reusable aluminum from the slag. The process is rounded off by the separated substances potassium ...