Life Cycle Assessment of Secondary Aluminium Refining

Gilstad, Gro; Hammervold, Johanne

doi:10.1007/978-3-319-48144-9_150

Cited by 4 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Metode yang digunakan untuk menghilangkan logam pengotor pada proses peleburan adalah metode fluxing, yaitu perlakuan yang diberikan saat peleburan dengan menambahkan senyawa kimia pada leburan aluminium. Proses fluxing dilakukan untuk meningkatkan kadar aluminium dan mengurangi kadar logam pengotor, dengan cara membentuk lapisan protektif diantara leburan dan udara (Gilstad, 2013).…”

Section: Pendahuluanunclassified

PENGARUH MASSA FLUX DAN WAKTU TAHAN FLUXING TERHADAP PENGURANGAN Mg PADA RECYCLING KALENG MINUMAN ALUMUNIUM

Oediyani¹,

Zain

Juniarsih

2017

tjst

View full text Add to dashboard Cite

ABSTRAKPemanfaatan pengolahan scrap kaleng minuman aluminium dapat digunakan sebagai bahan sekunder pada proses manufaktur produk aluminium. Ingot hasil daur ulang scrap kaleng minuman aluminium diharapkan dapat mengurangi biaya produksi, mengurangi polusi yang ditimbulkan serta dapat memenuhi kebutuhan aluminium di Indonesia. Penggunaan flux merupakan salah satu metode yang digunakan untuk mengurangi unsur pengotor pada aluminium paduan disamping itu flux dapat melindungi logam cair berikatan dengan oksigen. Di dalam penelitian ini digunakan scrap kaleng minuman yang terdiri dari scrap kaleng minuman berkarbonasi, isotonik dan penyegar. Pembuatan ingot dari bahan baku scrap kaleng minuman aluminium menggunakan variasi waktu tahan proses fluxing selama 60, 120, 180 dan 240 menit dan variasi penambahan massa flux sebanyak 5, 10 dan 15% dari total massa scrap. Kemudian dilakukan pengujian terhadap ingot yang dihasilkan untuk mengetahui persen penurunan kadar Mg dan perolehan Al menggunakan analisa teknik XRF, pengujian metalografi terhadap ingot untuk melihat strukturmikro hasil daur ulang. Hasil penelitian menunjukkan bahwa persen reduksi Mg tertinggi adalah 77,83% pada sampel penambahan 15% flux dengan waktu tahan selama 120 menit, perolehan Al tertinggi didapatkan sebesar 97,49% pada sampel penambahan 15% flux dengan waktu tahan 240 menit. Untuk nilai persen yield, recovery dan recycling efficiency, nilai tertinggi pada penambahan 10% flux dengan waktu tahan 180 menit dengan masingmasing nilai sebesar 98,82% untuk yield, 71,84% untuk recovery dan 70,53% untuk recycling efficiency. ABSTRACTThe utilization of aluminum beverage scrap processing can be used as a secondary material in the manufacturing process of aluminum products. Ingot recycled scrap aluminum beverage cans are expected to reduce production costs, reduce pollution generated and can meet the needs of aluminum in Indonesia. The use of flux is one of the methods used to reduce the impurity element on aluminum alloy beside that flux can protect molten metal binds to oxygen. In this study used scrap beverage cans consisting of carbonated beverage scrap cans, isotonic and refreshing. Ingot ingredients from scrap aluminum beverage cans using variation of fluxing resistance time for 60, 120, 180 and 240 minutes and variations of flux mass increase of 5, 10 and 15% of total scrap mass. Then tested the resulting ingot to know the percent decrease of Mg and Al recovery using XRF technique, metallographic test to ingot to see recycled microstructure. The results showed that the highest reduction percentage of Mg was 77.83% in a sample of 15% flux addition with a duration of 120 minutes, the highest Al gain was 97.49% in the sample of 15% flux addition with 240 min. For percent yield, recovery and recycling efficiency, the highest value is 10% flux with 180 minutes of duration with 98.82% for yield, 71.84% for recovery and 70.53% for recycling efficiency.

show abstract

Section: Pendahuluanunclassified

PENGARUH MASSA FLUX DAN WAKTU TAHAN FLUXING TERHADAP PENGURANGAN Mg PADA RECYCLING KALENG MINUMAN ALUMUNIUM

Oediyani¹,

Zain

Juniarsih

2017

tjst

View full text Add to dashboard Cite

show abstract

“…Aluminum alloy is recognized as recyclable material, and by using recycled aluminum alloy has lower greenhouse gas emissions than virgin metal because of low melting temperature [1][2][3]. However, most aluminum scraps are recycled to cast alloy due to impurity elements such as Si, Fe, etc.…”

Section: Introductionmentioning

confidence: 99%

Control of Amount of α-Al Phase Particles in near Eutectic Al-Si Alloy by Electromagnetic Stirring

Murakami

Omura

2022

SSP

View full text Add to dashboard Cite

Al-Si alloy is widely used as a casting alloy. The α-Al phase in the semi-solid state has low Si content in the Al-Si alloy. Then by separation of these α-Al phases from semi-solid Al-Si alloy, refining of aluminum can be possible. But, in near eutectic Al-Si alloy, few primary α-Al phases can be crystallized. If the fraction ratio of the α-Al phase can be increased, near eutectic Al-Si alloy can refine, and this method can be used for recycling. In this study, the effect of electromagnetic stirring (EMS) on the microstructure, especially the amount of the α-Al phase particles was investigated. A rotational magnetic field was applied to JIS ADC12 alloy which has near eutectic content during slow cooling from the liquid state to the solid-state, by using a three-phase AC coil. By applying EMS at solidification, the shape of the α-Al phase became particle shape from dendrite shape, and the amount of α-Al phase particles was increased. Moreover, by applying unidirectional intermittent EMS, the volume fraction of α-Al phase particles was decreased with increasing intermittent applying time. In ADC12 alloy, the primary α-Al phases can be crystallized only 10% generally, but it could be obtained over 40% by applying EMS. This means that the semi-solid slurry of near eutectic alloy with over 40% of fraction solid can be obtained by applying EMS.

show abstract

“…Aluminum scrap, as it is comprised from different aluminum grades, has a significant amount of impurities. For instance, the production of high purity aluminum alloy from scrap requires the incorporation of Hoopes process which requires more energy than primary production (17-18 kWh/kg) [8]. Therefore, it might be just as energy consuming as primary production.…”

Section: Introductionmentioning

confidence: 99%

How to Design the Utilization of Larger Scrap Share in Aluminum Production

Bouzouni¹,

Papaefthymiou

2021

International Conference on Raw Materials and Circular Economy

View full text Add to dashboard Cite

The production of Al-alloys is mainly based on electrolytic pure Al alloyed with the necessary other elements, which are added in high purity into the melt pool during smelting processes. This fact is responsible for high costs and emissions during aluminum production. The usage of aluminum scrap in its downstream production processes provides multiple benefits since it reduces the overall cost of aluminum production by preserving raw materials through the utilization of scrap streams. This work provides some indicative examples with the aim to propose and demonstrate alternative ways to exploit aluminum waste for the production of aluminum alloys.

show abstract

Life Cycle Assessment of Secondary Aluminium Refining

Cited by 4 publications

References 9 publications

PENGARUH MASSA FLUX DAN WAKTU TAHAN FLUXING TERHADAP PENGURANGAN Mg PADA RECYCLING KALENG MINUMAN ALUMUNIUM

PENGARUH MASSA FLUX DAN WAKTU TAHAN FLUXING TERHADAP PENGURANGAN Mg PADA RECYCLING KALENG MINUMAN ALUMUNIUM

Control of Amount of α-Al Phase Particles in near Eutectic Al-Si Alloy by Electromagnetic Stirring

How to Design the Utilization of Larger Scrap Share in Aluminum Production

Contact Info

Product

Resources

About