A direct conversion of blast furnace slag to a mesoporous silica–calcium oxide composite and its application in CO2 captures

2020 ◽  
Vol 22 (12) ◽  
pp. 3759-3768
Author(s):  
Yasutaka Kuwahara ◽  
Aiko Hanaki ◽  
Hiromi Yamashita
Keyword(s):  
Blast Furnace ◽  
Mesoporous Silica ◽  
Calcium Oxide ◽  
Blast Furnace Slag ◽  
Cost Effective ◽  
Direct Conversion ◽  
Oxide Composite ◽  
Adsorption Performance ◽  
Cost Effective Approach ◽  
Furnace Slag

A facile and cost-effective approach is presented that converts blast furnace slag into a mesoporous silica-CaO composite possessing high CO2 adsorption performance.

Uranium extraction by sulfonated mesoporous silica derived from blast furnace slag

2018 ◽  
Vol 509 ◽  
pp. 295-304 ◽  
Author(s):  
Mahmoud O. Abd El-Magied ◽  
Abdelghaffar S. Dhmees ◽  
Abd Allah M. Abd El-Hamid ◽  
Ekramy M. Eldesouky
Keyword(s):  
Blast Furnace ◽  
Mesoporous Silica ◽  
Blast Furnace Slag ◽  
Uranium Extraction ◽  
Furnace Slag

Effect of Using Ground Granulated Blast Furnace Slag in Rigid Pavement Overlays

2022 ◽  
Vol 1048 ◽  
pp. 396-402
Author(s):  
H.C. Guruprasad ◽  
R. Sridhar ◽  
R. Ravi Kumar
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Cost Effective ◽  
Normal Concrete ◽  
Rigid Pavement ◽  
Granulated Blast Furnace Slag ◽  
Curing Period ◽  
Iron Manufacturing ◽  
Pozzolanic Properties ◽  
Furnace Slag

Cement is replaced with Ground Granulated Blast Furnace Slag (GGBS), to produce a cost effective concrete and to gain effective compressive strength. It is produced in iron manufacturing industries. It has pozzolanic properties and has particle size less than 90μ. In this experimental study, cubes of size 150×150×150 mm and cylinders of 150 mm dia and 300 mm height were casted byreplacing GGBS from dosage of 8% up to 65% for curing period of 7days, 14days, 28days and 56days for M 40 grade concrete. Also, Alccofines were added in addition in varying percentage of 3%, 6%, 9% and 12% in order to gain high early strength and increase the workability. Hyper-Plasticizers were also added in order to reduce the water-content of the concrete. The results of GGBSCC were compared with that of normal concrete results.

Blast furnace slag in road construction and maintenance

2021 ◽  
Vol 2021 (23) ◽  
pp. 53-59
Author(s):  
László Gáspár ◽  
◽  
Zsolt Bencze ◽  
Keyword(s):  
Blast Furnace ◽  
Best Practices ◽  
Blast Furnace Slag ◽  
Road Construction ◽  
Cost Effective ◽  
Road Maintenance ◽  
The Road ◽  
Maintenance Techniques ◽  
Furnace Slag ◽  
By Products

Introduction. There is a global trend to increase the sustainability of road construction and maintenance technologies. The growing use of various industrial by-products as economical and eco-friendly construction and maintenance techniques can be observed in many countries.Problem Statement. The utilization of various forms of blast furnace slag in the road sector can be cost effective, however, several special technological measures have to be taken.PurposePresenting best practices for the use of blast furnace slag in road construction and maintenance techniques based on Hungarian and other decade-long experiences.Materials and Methods. The main types investigated are air-cooled blast furnace slag, expanded or foamed slag, pelletized slag, and granulated blast furnace slag. The utilization areas in road sector: asphalt layers, surface treatments, rut repair, hydraulically bound pavement layers, unbound base layers, frost protection layer, subgrade, cement production.Results. Presenting best practices for the use of blast furnace slag in road construction and maintenance can be beneficial for the experts of countries with limited experience in the field. Keywords: blast furnace slag, industrial by-products, road construction, road maintenance, environmental protection

Probing of Iron Ore “Plus Calcium Oxide Grade"

2010 ◽  
Vol 160-162 ◽  
pp. 1253-1256
Author(s):  
Zhi Xia Zhang ◽  
Hai Sheng Yin
Keyword(s):  
Blast Furnace ◽  
Calcium Oxide ◽  
Blast Furnace Slag ◽  
Iron Ore ◽  
Mass Percentage ◽  
Iron Concentrate ◽  
Oxide Addition ◽  
Furnace Slag

A new concept, “Plus Calcium Oxide Grade”, was put forward, which is the very mass percentage of iron element when Calcium Oxide addition fulfills the need of the basicity of the blast furnace slag. The “Plus Calcium Oxide Grade” and “Minus Calcium Oxide Grade” of iron ore, iron concentrate, sinter and pellet was calculated, analyzed and also compared. The results showed that: the Plus Calcium Oxide Grade can reflect the smelting value more objectively and reasonably, while the basic grade and “Minus Calcium Oxide Grade” can not. So it is suggested that the concept of “Plus Calcium Oxide Grade” can be brought into the iron ore dealing and using, and also into the area of iron concentrate, sinter, pellet and furnace mixture.

Effect of Anhydrite on the Hydration of Calcium Oxide-Activated Ground Granulated Blast Furnace Slag Binders

2017 ◽  
Vol 9 (12) ◽  
pp. 2214-2222 ◽  
Author(s):  
Junxiang Wang ◽  
Xianjun Lyu ◽  
Lingyun Wang ◽  
Xiaoqiang Cao ◽  
Haoyu Zang ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Calcium Oxide ◽  
Blast Furnace Slag ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

scholarly journals Preparation of CaMgAl-LDHs and mesoporous silica sorbents derived from blast furnace slag for CO2 capture

RSC Advances ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 6054-6063 ◽  
Author(s):  
Haojie Jiang ◽  
Hongwei Guo ◽  
Peng Li ◽  
Yang Li ◽  
Bingji Yan
Keyword(s):  
Blast Furnace ◽  
Mesoporous Silica ◽  
Co2 Capture ◽  
Blast Furnace Slag ◽  
Furnace Slag ◽  
Mcm 41

A total solution for the utilisation of BFS can be achieved and the resulting valuable products CaMgAl-LDHs and MCM-41 are promising sorbents for CO2 capture.

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