Making steel with slag from secondary-aluminum production

Metallurgist ◽  
1987 ◽  
Vol 31 (1-2) ◽  
pp. 13-14
Author(s):  
A. M. Ovsyannikov ◽  
G. Z. Gizatulin ◽  
N. M. Perevorachaev ◽  
A. F. Papuna ◽  
S. P. Terziyan ◽  
...  
Keyword(s):  
Aluminum Production ◽  
Secondary Aluminum

Additions of Salt Cake and KAlF4 from Aluminum Production to Steelmaking Slags

2012 ◽  
Vol 31 (4-5) ◽  
pp. 529-537
Author(s):  
G.A. Sweet ◽  
S. Ferenczy ◽  
W.F. Caley ◽  
G.J. Kipouros
Keyword(s):  
Raw Materials ◽  
Aluminum Production ◽  
Secondary Aluminum ◽  
Promising Alternative ◽  
Salt Cake ◽  
Steelmaking Slags ◽  
Alternative Means ◽  
Temperature Operating ◽  
Plant Trials

AbstractFluorspar, a mineral primarily composed of CaF2 is the most commonly used slag fluidizer in steelmaking. Due to increasing costs for fluorspar steelmakers are seeking alternative means of achieving slag fluidity. The research has concentrated on other minerals or the wastes of other high temperature operating industries. A promising alternative to fluorspar has been identified in a previous work from this laboratory which is the salt cake from secondary aluminum production such as the flux in remelting aluminum scrap and dross. This material is widely available and also considered toxic (meaning that use in steelmaking helps to reduce environmental impacts from disposal). The present work is an investigation of the viability of using mixtures of salt cake and KAlF4 in slag-fluidizing applications by measurements of viscosity and weight loss at high temperatures (to evaluate whether large amounts of potentially harmful gases are formed). In addition, characterization of raw materials and melted slags has been performed. In terms of fluidity the mixtures of aluminum salt cake and KAlF4 are qualified for use as fluidizers. The results of the present study will be used to design plant trials.

scholarly journals Recovery of Aluminum from Industrial Waste (Slag) by Melting and Electrorefining Processes

2018 ◽  
Vol 14 (3) ◽  
pp. 81-91 ◽  
Author(s):  
Maytham Mahmood Ali ◽  
Rabiha Saleh Yassen
Keyword(s):  
Slag Sample ◽  
Melting Process ◽  
Industrial Wastes ◽  
Aluminum Production ◽  
Economic Returns ◽  
Secondary Aluminum ◽  
X Ray ◽  
Melting Temperatures ◽  
Salt Slag ◽  
Melting Experiments

Slag of aluminum is a residue which results during the melting process of primary and secondary aluminum production. Salt slag of aluminum is hazardous solid waste according to the European Catalogue for Hazardous Wastes. Hence, recovery of aluminum not only saves the environment, but also has advantages of financial and economic returns. In this research, aluminum was recovered and purified from the industrial wastes generated as waste from both of State Company for Electrical and Electronic Industries (Baghdad/AlWaziriya) and General Company for Mechanical Industries (Babylon/-Al-Escandria). It was found that these wastes contain tiny proportions of other elements such as iron, copper, nickel, titanium, lead, and potassium. Wastes were recovered for green sustainability, saving energy and cost effectiveness. The method applied for recovering aluminum was pyro-metallurgical method by smelting and refining. X-Ray fluorescence spectroscopy and X- Ray diffraction techniques of the slag sample were used to determine the chemical analysis and phases, respectively. Melting experiments were conducted by using different types of fluxes (KAlF4, NaCl, KCl and AlCl3) at different percentages (0, 5, 10 %) and different melting temperatures (700, 750, 800oC). Design of Experiment (DOE) by Taguchi method, orthogonal array L9, was used in melting experiments. Melting efficiency of aluminum was equal to 84.7%. Electro-refining of aluminum was done by using anhydrous aluminum chloride and NaCl as ionic liquids at low temperature 100 ◦C in electro-refining method producing aluminum of 99% purity.                                  

Analysis of Aluminum Supply and Demand Development Trend in China and the United States

2014 ◽  
Vol 962-965 ◽  
pp. 1936-1942 ◽  
Author(s):  
Xin Li ◽  
Xiang Zhang
Keyword(s):  
United States ◽  
Comparative Method ◽  
Supply And Demand ◽  
Development Trend ◽  
The United States ◽  
Primary Aluminum ◽  
Aluminum Production ◽  
Secondary Aluminum ◽  
Production Ratio ◽  
Primary Aluminum Production

Abstract: In this paper we use comparative method to analyze the evolution law and development trend of aluminum resources supply and demand in China and the United States, the purpose is to predict the future China aluminum supply and demand trend. This paper analyses the primary aluminum production, secondary aluminum production, import and export volume, consumption of aluminum and other data in China from 1956 to 2013, and in the United States from 1900 to 2013. The results show that: (1) the aluminum resources supply and demand trend of the United States are in line with "S" shape, while the primary aluminum development show a trend of inverted "U" curve; (2) China primary aluminum production and consumption trend both appears inverted "U" curve; (3) China begin to reduce the external dependency of secondary aluminum with its self-sufficiency ability raise; (4) China secondary aluminum production ratio will be more than primary aluminum ratio.

scholarly journals Recovery of Aluminum from Industrial Waste (Slag) by Melting and Electrorefining Processes

2018 ◽  
Vol 14 (3) ◽  
pp. 81-91
Author(s):  
Maytham Mahmood Ali ◽  
Rabiha Saleh Yassen
Keyword(s):  
Slag Sample ◽  
Melting Process ◽  
Industrial Wastes ◽  
Aluminum Production ◽  
Economic Returns ◽  
Secondary Aluminum ◽  
X Ray ◽  
Melting Temperatures ◽  
Salt Slag ◽  
Melting Experiments

Slag of aluminum is a residue which results during the melting process of primary and secondary aluminum production. Salt slag of aluminum is hazardous solid waste according to the European Catalogue for Hazardous Wastes. Hence, recovery of aluminum not only saves the environment, but also has advantages of financial and economic returns. In this research, aluminum was recovered and purified from the industrial wastes generated as waste from both of State Company for Electrical and Electronic Industries (Baghdad/AlWaziriya) and General Company for Mechanical Industries (Babylon/-Al-Escandria). It was found that these wastes contain tiny proportions of other elements such as iron, copper, nickel, titanium, lead, and potassium. Wastes were recovered for green sustainability, saving energy and cost effectiveness. The method applied for recovering aluminum was pyro-metallurgical method by smelting and refining. X-Ray fluorescence spectroscopy and X- Ray diffraction techniques of the slag sample were used to determine the chemical analysis and phases, respectively. Melting experiments were conducted by using different types of fluxes (KAlF4, NaCl, KCl and AlCl3) at different percentages (0, 5, 10 %) and different melting temperatures (700, 750, 800oC). Design of Experiment (DOE) by Taguchi method, orthogonal array L9, was used in melting experiments. Melting efficiency of aluminum was equal to 84.7%. Electro-refining of aluminum was done by using anhydrous aluminum chloride and NaCl as ionic liquids at low temperature 100 ◦C in electro-refining method producing aluminum of 99% purity.                                  

scholarly journals Depletion of Slag from Almalyk Copper Plant with Aluminum Containing Waste

2019 ◽  
Vol 9 (2) ◽  
pp. 2831-2837
Keyword(s):  
Negative Impact ◽  
Raw Materials ◽  
Copper Slag ◽  
Reducing Agent ◽  
Aluminum Production ◽  
Secondary Aluminum ◽  
Residual Concentration ◽  
Factors Affecting ◽  
Maximum Reduction ◽  
Main Factors

The article discusses the method of depletion of copper slag using local secondary technogenic formations. When performing this study, slag of secondary aluminum production was used as a reducing agent. It has been established that the developed and widely used in industry technologies for slag decontamination only partially solve the problem and lead to significant irretrievable losses of metal with dump slag. The main factors affecting the magnitude of the losses are established and suggestions for reducing their negative impact are recommended. The use of melting units in laboratory conditions is recommended, as in this case, it is possible to achieve a maximum reduction in the residual concentration of copper in the waste slag. Together, it is possible to achieve an increase in the complexity of the use of raw materials with the organization and implementation of low-waste technology.

Characterization of salt cake from secondary aluminum production

2014 ◽  
Vol 273 ◽  
pp. 192-199 ◽  
Author(s):  
Xiao-Lan Huang ◽  
Amro El Badawy ◽  
Mahendranath Arambewela ◽  
Robert Ford ◽  
Morton Barlaz ◽  
...  
Keyword(s):  
Aluminum Production ◽  
Secondary Aluminum ◽  
Salt Cake

scholarly journals Analysis of Aluminum Resource Supply Structure and Guarantee Degree in China Based on Sustainable Perspective

2016 ◽  
Author(s):  
Shaoli Liu ◽  
Xin Li ◽  
Minxi Wang
Keyword(s):  
Mineral Resource ◽  
Raw Materials ◽  
Mainland China ◽  
Primary Aluminum ◽  
Aluminum Production ◽  
Structure Model ◽  
Secondary Aluminum ◽  
Resource Recycling ◽  
High Dependency ◽  
Production And Consumption

Aluminum is a strategic mineral resource, and China’s aluminum production and consumption is fairly large. However, its supply guarantee is uncertain because of a high dependency on external raw materials. This uncertainty may expand, so finding a way to reduce the uncertainty of aluminum resource supply is especially important. This paper applies the SFA method to analyze the aluminum flows in mainland China from 1996 to 2014, and establishes a supply structure model to measure its supply guarantee degree. The results claim that: (1) China’s aluminum production can satisfy demand and even create a surplus; (2) Domestic self-productive primary and secondary aluminum increased at an annual rate of 12% and 24%; (3) The proportion of self-productive secondary aluminum in the supply structure increased from 7.7% in 1996 to 12.8% in 2014, while that of primary aluminum decreased from 79.6% to 42.8%; (4) The total supply guarantee degree decreased from 87.3% to 55.6% in this period. These results provide a feasible way to solve this plight: the proportion of secondary aluminum in the supply structure should be enhanced, and an efficient aluminum resource recycling system needs to be established as soon as possible to ensure its sustainable supply.

scholarly journals Using of aluminium slags and products of their pro‑cessing in metallurgical production

2021 ◽  
pp. 42-49
Author(s):  
L. V. Tribushevskiy ◽  
B. M. Nemenenok ◽  
G. A. Rumiantseva ◽  
A. V. Arabey
Keyword(s):  
Chloride Content ◽  
Aluminum Production ◽  
Secondary Aluminum ◽  
Technical Literature ◽  
Metallurgical Production ◽  
Production Wastes ◽  
Steel Processing ◽  
Furnace Steel ◽  
Sodium And Potassium ◽  
Steel Treatment

The work contains the results of the analysis of technical literature and author’s research on the use of aluminium slags and products of their processing in metallurgical production. It has been shown that the bulk of reagents derived from secondary aluminum production wastes (APWs) are used with increased sodium and potassium chloride. This creates some inconvenience for out‑of‑furnace steel treatment due to the increased chloride content in the working area. It is proposed for steel processing to use APWs formed during flux‑free melting or dump aluminium slags. This allows to reduce the content of salt fluxes residues to 1.0–1.5 % and to improve working conditions at ladle furnaces when liquefying refining slags.

Sign in / Sign up

Export Citation Format

Share Document