scholarly journals Kinetic studies of Ni(II) ions adsorption from aqueous solutions using the blast furnace slag (BF slag)

2021 ◽  
Vol 68 (1) ◽  
Author(s):  
Toufik Chouchane ◽  
Ouahida Khireddine ◽  
Atmen Boukari
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Chemical Characterization ◽  
Kinetic Studies ◽  
Physico Chemical ◽  
Intra Particle Diffusion ◽  
Pseudo Second Order ◽  
Bf Slag ◽  
Furnace Slag ◽  
Nickel Adsorption

AbstractIn this work, we used the blast furnace slag for the nickel adsorption in aqueous solution. The physico-chemical characterization showed that the BF slag consists mainly of the silica, lime, and alumina. The specific surface area of the BF slag grains is of the order of 275.8 m2/g. The optimum elimination parameters are the agitation speed 200 rpm, pH 4.5, the adsorption temperature 20 °C, and particle size between 200 and 500 μm. The adsorption capacity and the efficiency of nickel removal by the BF slag after 90 min of agitation are respectively 53.58 mg/g and 92.7%.The experimental adsorption data showed that the pseudo-second-order model was the most appropriate in nickel adsorption kinetics; the adsorption isotherm could be described well by the Langmuir model indicating that the process was monolayer, and intra-particle diffusion is not the sole mechanism involved in this process. Thermodynamic study showed that the Ni(II) elimination by BF slag process is spontaneous, exothermic, and less entropic.

Application of High Ti-Bearing Blast Furnace Slag in Field of Building Materials

2014 ◽  
Vol 1052 ◽  
pp. 392-395 ◽  
Author(s):  
Li Xia He
Keyword(s):  
Sustainable Development ◽  
Blast Furnace ◽  
Environmental Protection ◽  
Blast Furnace Slag ◽  
Building Materials ◽  
Waste Material ◽  
Great Production ◽  
Bf Slag ◽  
Furnace Slag

High Ti-bearing blast furnace (BF) slag is the smelting waste of vanadium titano-magnetite. It has great production but low utilization. The high Ti-bearing BF slag is used in building materials industry, which recycles waste material, saves resources and energy, benefiting environmental protection and achieving sustainable development of resources. Study on the recycling of high Ti-bearing BF slag will be an important subject of our researches in future.

Cognition on the Molten Blast Furnace Slag Granulation Techniques in Contemporary China

2013 ◽  
Vol 634-638 ◽  
pp. 3118-3122
Author(s):  
Lin Li ◽  
Guang Xiao Ma ◽  
Dai Jun Wang ◽  
Ruo Yu Zang ◽  
Yong Qi Li
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Molten Slag ◽  
Waste Heat ◽  
Water System ◽  
Contemporary China ◽  
Bf Slag ◽  
Design Ideas ◽  
Furnace Slag ◽  
Slag Granulation

Introduce characters and applications of granulation techniques of the molten blast furnace slag in contemporary China, describe characters and design ideas of two types of granulation boxes, represent three types of circulating granulation water systems, put forward matching proposal between the molten slag granulation system and the circulating granulation water system, analyze contemporary research and problems of waste heat recovery of the molten BF slag.

Progress in Molten Blast Furnace Slag Treatment Using Dry Centrifugal Granulation Technology

2014 ◽  
Vol 675-677 ◽  
pp. 1406-1410
Author(s):  
Jia Bin Zhu ◽  
Shu Zhong Wang ◽  
Ming Luo
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Waste Heat ◽  
Recovery Process ◽  
Water Quenching ◽  
Huge Amount ◽  
Slag Treatment ◽  
Bf Slag ◽  
Granulation Technology ◽  
Furnace Slag

The molten blast furnace slag (BF slag) is discharged at the temperature of about 1400-1550 °C, which contains a large amount of heat. At present, water quenching is the main technology to treat the BF slag, but this method not only consumes a huge amount of water, but also fails to recover the waste heat. Compared with water quenching, the dry centrifugal granulation has obvious advantages. There is no water consumed and the waste heat can be recovered efficiently, thus this technology has great potential. This technology mainly contains two processes: the granulating process and the heat recovery process. The present development statuses on those two processes are summarized respectively and the prospect of dry centrifugal granulation technology is forecasted.

Preparation of TiC by carbothermal reduction in vacuum and acid leaching using blast furnace slag bearing titania

2016 ◽  
Vol 5 (2) ◽  
Author(s):  
Meilong Hu ◽  
Ruirui Wei ◽  
Zhengfeng Qu ◽  
Fangqing Yin ◽  
Yuzhou Xu ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Carbothermal Reduction ◽  
Blast Furnace Slag ◽  
Acid Leaching ◽  
Carbon Powder ◽  
Mass Ratio ◽  
Combined Process ◽  
Temperature And Pressure ◽  
Bf Slag ◽  
Furnace Slag

AbstractA combined process of carbothermal reduction in vacuum and acid leaching is proposed to produce TiC from titanium bearing blast furnace (BF) slag from Pan Steel in Panzhihua city in China. Thermodynamics calculation shows that TiC can be obtained in the appropriate temperature and pressure range. Moreover, the results of the experiment indicate that TiC can be prepared by the combined process. The optimized parameters include particle size of original slag ideally below 200 mesh, reduction temperature of 1400°C, pressure of 1~10 Pa and mass ratio of slag and reduction (carbon powder) of 100/38. The x value in TiC

scholarly journals Kinetics and physico-chemical properties of alkali activated blast-furnace slag/basalt pastes

HBRC Journal ◽  
2012 ◽  
Vol 8 (3) ◽  
pp. 170-176 ◽  
Author(s):  
H. El Didamony ◽  
H.H. Assal ◽  
T.M. El Sokkary ◽  
H.A. Abdel Gawwad
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Chemical Properties ◽  
Physico Chemical ◽  
Furnace Slag ◽  
Alkali Activated

Study on Viscosity of Titania Bearing Blast Furnace Slag

2011 ◽  
Vol 467-469 ◽  
pp. 1742-1745 ◽  
Author(s):  
Jin Zhu Zhang ◽  
Ling Wen ◽  
Ming Hua Long ◽  
Bi Neng Yang
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Orthogonal Design ◽  
Al2o3 Content ◽  
Slag Viscosity ◽  
Iron And Steel ◽  
Analytical Reagent ◽  
Bf Slag ◽  
Furnace Slag

The viscosity of blast furnace slag which was taken from Shuicheng Iron and Steel Group Co. Limited was experimentally measured by column whirling method using the ND-II slag viscosity tester. By adding analytical reagent CaO, SiO2, Al2O3, MgO and TiO2 in accordance with orthogonal design, the contents of compositions in slag were adjusted in CaO/SiO2=1.16-1.24, 14.06-17.06mass%Al2O3, 5-7mass%TiO2, 8.96-9.96mass%MgO. The results showed that the viscosity of BF slag decreased with increasing TiO2; when the Al2O3 content in the slag was 14.06%, the viscosity of BF slag had a lowest value, a highest value had for 15.56% Al2O3 content, and a lower value for 17.06% Al2O3 content. There is no significant effect on the viscosity by both the magnesia and the binary basicity.

scholarly journals ADSORPTIVE REMOVAL OF FIVE HEAVY METALS FROM WATER USING BLAST FURNACE SLAG AND FLY ASH

2018 ◽  
Vol 54 (2A) ◽  
pp. 314
Author(s):  
Nguyen Thuy Chung
Keyword(s):  
Heavy Metals ◽  
Blast Furnace ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Model Fitting ◽  
Aquatic Organisms ◽  
Second Order ◽  
Kinetics Of Adsorption ◽  
Pseudo Second Order ◽  
Furnace Slag

Heavy metals can be serious pollutants of natural water bodies causing health risks to humans and aquatic organisms. A study was conducted to remove five heavy metals from water by adsorption onto an iron blast furnace slag and a fly ash in batch experiments. Increase of pH increased adsorption of all metals. Equilibrium adsorption of all metals was successfully modelled using Langmuir, Freundlich and Dubinin-Radushkevich models, with Freundlich model fitting the data the best. Langmuir adsorption maximum at pH 6.5 for fly ash ranged 3.4 - 5.1 mg/g with the adsorption capacity for the metals in the order, Pb > Cu > Cd, Zn, Cr. The corresponding values for furnace slag were 4.3 - 5.2 mg/g, and the order of adsorption capacities, Pb, Cu, Cd > Cr > Zn. The kinetics of adsorption fitted well to both the pseudo-first order and pseudo-second order models, but the fit was slightly better for the pseudo-second order model.

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