نتایج جستجو برای: converter slag

تعداد نتایج: 30425  

2006

EPA has completed a substantial study to re-evaluate use of the presence of slag wool fibers as a potential marker for World Trade Center (WTC)-derived dust contamination. Slag wool is an insulating material (made from blast furnace slag) that was used in the construction of the WTC. Large quantities of slag wool were released into lower Manhattan by the collapse of the WTC. Samples of dust col...

Journal: :Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering 2005
Yi-Chin Huang Kung-Cheh Li Hui-Hsien Chiang

This study presents the result of using melting to recover both industrial sludge slag (the main constituent of which is calcium fluoride) and water works sludge slag as fine aggregate in cement. The main characteristics of both slag and cement mortars were measured to evaluate the feasibility of using slag as aggregate. In this study, the slag replacement ratios were 0, 10, 20, 30, 40, and 50%...

2010
Yong-Soo Jeong Kazuyo Matsubae-Yokoyama Tetsuya Nagasaka

The dephosphorization slag has a great potential as the secondary resources of manganese and phosphorus, while quite a large amount of slag is landfilled and simply reused such as cement. The objective of this study is to investigate the recovery of manganese and phosphorus by wet magnetic separation technique. The hot metal pretreatment slag (dephosphorization slag) generally contains a Ca3P2O...

2017
Helena Hybská Emília Hroncová Juraj Ladomerský Karol Balco Jozef Mitterpach

This paper focuses on research concerning the ecotoxicological properties of granulated slag from the pilot production of gray iron with red mud addition and concrete composites with the application of this slag. Red mud is a hazardous waste generated in the production of aluminium oxide. Negative ecotoxicological tests are, therefore, one of the basic prerequisites for the ability to use granu...

Journal: :Isij International 2023

In the current study, reaction behavior between bottom blowing CO2 and molten steel at different converter stages was studied by thermodynamic calculation. At initial stage, reacts with [C] before turning point then [Si] simultaneously after that. completely twice volume of CO generates middle stage. The ratio gradually decreases final stage due to reacting [Fe] residual unreacted increases. Th...

2014
Daniela M. UROSEVIC Mile D. DIMITRIJEVIC Zoran D. JANKOVIC Dejan V. ANTIC D. M. Urosevic M. D. Dimitrijevic Z. D. Jankovic D. V. Antic

Copper smelter slag and copper smelter slag flotation tailings were leached using sulphuric acid solutions, without or with the addition of either ferric sulphate or hydrogen peroxide. Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were ...

A. Shafyei Samad Ghasemi,

Using wastes as starting raw materials is a common method to reduce the production costs and the environmental pollution problems arising from such wastes. In this study the production and crystallization behavior of an iron rich glass prepared by iron and steel making wastes has been investigated. The raw materials used, were the blast furnace slag, the blast furnace dust, converter slag and s...

2015
Lianyong Wang Wenqiang Sun Xiaoling Li Jiuju Cai

As a valuable byproduct of iron-making process, blast furnace slag contains tremendous amount of sensible heat. Granulation of blast furnace slag is the first step for its heat recovery. Due to environmental and energy issues, dry centrifugal granulation has received a considerable amount of attention. However, the flight dynamics of blast furnace slag, which is of great importance for size des...

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