Synthesis of high temperature (1150 °C) resistant materials after extraction of oxides of Al and Mg from Aluminum dross

Ramaswamy, Parvati; Ranjit, Shravan; Bhattacharjee, Sushmit; Gomes, Sylvester Avijit

doi:10.1016/j.matpr.2019.07.751

Cited by 16 publications

(8 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other scholars have also made certain achievements in the comprehensive utilization of aluminum ash. For example, the aluminum ash is used to prepare refractory materials [11,12], steelmaking deoxidizer [13,14], inorganic flocculants [15][16][17], chemical raw materials [18][19][20], and building materials [21,22]. Nevertheless, most of the above applications are in the theoretical and laboratory stages, which have a high production cost, and may cause secondary pollution.…”

mentioning

confidence: 99%

Preparation and Performance Optimization of Original Aluminum Ash Coating Based on Plasma Spraying

Zhang

et al. 2019

Coatings

View full text Add to dashboard Cite

As an industrial solid waste, the original aluminum ash (OAA) will cause serious pollution to the air and soil. How to reuse the OAA has been a research difficulty. Thus, a method of preparing a plasma spray powder using OAA is proposed. The OAA was hydrolyzed and ball milled, and the flowability of original aluminum ash spray powder (OAASP) was evaluated by the angle of repose. The coating properties were determined via analyzing the microstructure and the phase of the coating, and the effects of plasma spray parameters on the coating properties were investigated by the orthogonal experiment to optimize spray parameters. The results show that the angle of repose of OAASP after granulation was less than 40°, which met the requirements of plasma spraying. When the spraying current was 600 A, the spraying voltage was 60 V, the main gas flow was 33 slpm, and the powder flow rate was 22 g/min, and the prepared original aluminum ash coating (OAAC) had excellent comprehensive performance. After the spraying process parameters were optimized, the microhardness of the coating was 606.54 HV, which is about twice the hardness of the substrate; the abrasion rate was 12.86 × 10−3 g/min; the porosity was 0.16%; and the adhesive strength was 16 MPa. When the amount of Al2O3 added was 50%, the hardness of the coating was increased by 17.61%.

show abstract

mentioning

confidence: 99%

Preparation and Performance Optimization of Original Aluminum Ash Coating Based on Plasma Spraying

Zhang

et al. 2019

Coatings

View full text Add to dashboard Cite

show abstract

“…Aluminum oxide and magnesium aluminate are basic compounds contained in the refractory composition, which are products that have low thermal conductivity and high-temperature shock conditions of more than 1000 o C. Aluminum black dross can be an alternative material because it has these compounds. Aluminum black dross contains aluminum nitride which is a compound that has a high thermal conductivity which is not ideal for refractories; therefore, it is necessary to remove AlN (Ramaswamy et al, 2019a;Ramaswamy et al, 2019b;). Zirconia addition can be performed on refractory synthesis to increase thermal shock resistance with a 1:1 ratio with 10% polyvinyl alcohol (Ramaswamy et al, 2019a).…”

Section: Refractorymentioning

confidence: 99%

Utilization of hazardous waste of black dross aluminum: processing and application-a review

Lukita¹,

Abidin²,

Riani³

et al. 2022

J.Degrade.Min.Land Manage.

View full text Add to dashboard Cite

Aluminum black dross is produced by the secondary smelting process of aluminum. Aluminum black dross is classified as hazardous waste because it is reactive with water and produces substances and gases that are harmful to humans and the environment. Generally, aluminum black dross is managed by landfill method, but because it is produced in large amounts every year, the aluminum black dross needs to be utilized to reduce the impact on the environment. Aluminum black dross consists of large amounts of metal oxide and salts. The amount of metal oxide content in aluminum black dross can be used as raw material. This paper review types of processes for utilizing black dross aluminum as raw material in value-added products. aluminum black dross can be used as alumina, adsorbent, zeolite, composites, geopolymers, refractories, and fillers. By utilizing aluminum black dross waste into various products that have economic value, besides being able to protect the environment, it can also reduce environmental resource use.

show abstract

“…In the process of preparing alumina by alkaline baking of AD-1, AlN in the slurry is heated to generate ammonia gas, which not only corrodes the equipment but also degrades the operating environment. When AD-1 is directly used as a raw material for refractory 12,13 or ceramic materials 14 at high temperature, oxidation of aluminum nitride will generate exhaust gas that will form pores during the baking process, thus affecting the structural stability and overall performance of the final product.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Denitrification of Black Aluminum Dross

Chen

Liu³

2021

JOM

View full text Add to dashboard Cite

A novel process for denitrification of black aluminum dross has been studied. The effects of the baking temperature, reagent addition ratio, and holding time on the denitrification ratio of aluminum dross were studied. X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM) with energydispersive spectrometry (EDS), x-ray fluorescence (XRF), and nitrogen element analysis were used to evaluate the aluminum dross before and after baking. Aluminum nitride in aluminum dross could be removed effectively by baking a mixture of the aluminum dross with a reagent. A satisfactory denitrification ratio was obtained when applying a baking temperature of 890°C to 920°C, reactant additive dose of 30 wt.% to 40 wt.%, and holding time of 2 h to 3 h, reaching a maximum value of 98.13%. During the baking process, AlN reacted with O 2 in air to form Al 2 O 3 and N 2 , CaCO 3 in carbonates reacted with fluorides and changed into CaF 2 , and Na 2 CO 3 in carbonates reacted with Al 2 O 3 and SiO 2 to form Na 1.95 (Al 1.95 Si 0.05 O 4 ), called zeolite, a compound with cellular structure. This denitrification process is environmentally friendly and could accelerate reutilization of aluminum dross.

show abstract

Synthesis of high temperature (1150 °C) resistant materials after extraction of oxides of Al and Mg from Aluminum dross

Cited by 16 publications

References 5 publications

Preparation and Performance Optimization of Original Aluminum Ash Coating Based on Plasma Spraying

Preparation and Performance Optimization of Original Aluminum Ash Coating Based on Plasma Spraying

Utilization of hazardous waste of black dross aluminum: processing and application-a review

Experimental Study on Denitrification of Black Aluminum Dross

Contact Info

Product

Resources

About

Synthesis of high temperature (1150 °C) resistant materials after extraction of oxides of Al and Mg from Aluminum dross

Cited by 16 publications

References 5 publications

Preparation and Performance Optimization of Original Aluminum Ash Coating Based on Plasma Spraying

Preparation and Performance Optimization of Original Aluminum Ash Coating Based on Plasma Spraying

Utilization of hazardous waste of black dross aluminum: processing and application-a review

Experimental Study on Denitrification of Black Aluminum Dross

Contact Info

Product

Resources

About

Synthesis of high temperature (1150 °C) resistant materials after extraction of oxides of Al and Mg from Aluminum dross