Characterization of Blast Furnace Slag−Ca(OH)2Sorbents for Flue Gas Desulfurization

2008 ◽  
Vol 47 (20) ◽  
pp. 7897-7902 ◽  
Author(s):  
Guozhuo Gong ◽  
Shufeng Ye ◽  
Yajun Tian ◽  
Yanbin Cui ◽  
Yunfa Chen
Keyword(s):  
Blast Furnace ◽  
Flue Gas ◽  
Blast Furnace Slag ◽  
Flue Gas Desulfurization ◽  
Furnace Slag

scholarly journals Effect of Flue Gas Desulfurization Gypsum on the Properties of Calcium Sulfoaluminate Cement Blended with Ground Granulated Blast Furnace Slag

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 382 ◽  
Author(s):  
Danying Gao ◽  
Zhenqing Zhang ◽  
Yang Meng ◽  
Jiyu Tang ◽  
Lin Yang
Keyword(s):  
Blast Furnace ◽  
Mechanical Strength ◽  
Flue Gas ◽  
Blast Furnace Slag ◽  
Setting Time ◽  
Flue Gas Desulfurization ◽  
Calcium Sulfoaluminate Cement ◽  
Calcium Sulfoaluminate ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

This work aims to investigate the effect of additional flue gas desulfurization gypsum (FGDG) on the properties of calcium sulfoaluminate cement (CSAC) blended with ground granulated blast furnace slag (GGBFS). The hydration rate, setting time, mechanical strength, pore structure and hydration products of the CSAC-GGBFS mixture containing FGDG were investigated systematically. The results show that the addition of FGDG promotes the hydration of the CSAC-GGBFS mixture and improves its mechanical strength; however, the FGDG content should not exceed 6%.

Preparation and Characterization of Desulfurization Sorbent from Hydrated Lime and Blast Furnace Slag

2008 ◽  
Vol 368-372 ◽  
pp. 1548-1551
Author(s):  
Guo Zhuo Gong ◽  
Shu Feng Ye ◽  
Feng Li ◽  
Yan Bin Cui ◽  
Ya Jun Tian ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Flue Gas ◽  
Calcium Silicate ◽  
Blast Furnace Slag ◽  
Hydrated Lime ◽  
Experiment Design ◽  
Factorial Experiment ◽  
Calcium Silicate Hydrates ◽  
Furnace Slag

A series of sorbents for SO2 in flue gas were prepared from hydrated lime and blast furnace slag using a factorial experiment design. It is found that the reaction between hydrated lime and blast furnace slag is fast. The reactivities of the as-prepared sorbents are higher than those of hydrated lime alone due to the formation of calcium silicate hydrates, and hence the utilization of hydrated lime as well as the Ca in the blast furnace slag is improved. Furthermore, the effects of preparation variables on the reactivity of the sorbents are also discussed.

Experimental Investigation of Sintering Flue Gas Desulfurization with Steel Slag Using Dry CFB Method

2011 ◽  
Vol 71-78 ◽  
pp. 2547-2550 ◽  
Author(s):  
Jian An Zhou ◽  
Sheng Jun Zhong ◽  
Jun Xiang Dang ◽  
Xu Li
Keyword(s):  
Blast Furnace ◽  
Flow Rate ◽  
Flue Gas ◽  
Blast Furnace Slag ◽  
Gas Flow ◽  
Converter Slag ◽  
Steel Slag ◽  
Flue Gas Desulfurization ◽  
So2 Emission ◽  
Furnace Slag

SO2 Emission of sintering flue gas accounts for more than 70% of total SO2 emission of steel industry. The purpose of this paper was to use steel slag for desulfurization of sintering flue gas. Based on traditional circulating fluidized beds (CFB) for flue gas desulfurization (FGD), a new dry digestion CFB-FGD process was developed. The new process eliminated the traditional digestion procedure, and the functions of the reactor include preliminary dust collection, digestion and desulfurization. An pilot CFB installation with maximum flow rate of 8000 Nm3/h for flue gas desulfurization was established. The desulfurization effects of calces, converter slag and blast furnace slag were investigated under the following experimental conditions: temperature of inlet flue gas, 150 °C; temperature of outlet flue gas, 75 °C. Relative humidity, 13%; flue gas flow rate, 6800 Nm3/h; Ca/S ratio, 1.2. The results showed that all of the desulfurization agents had desulfurization capability and the desulfurization efficiency of calces was the best, followed by converter slag and blast furnace slag. The removal efficiency of steel slag ranged from 75% to 82%. Considering solid waste utilization, the application of steel slag in desulfurization using dry CFB has a promising future.

Characterization of a blast-furnace slag reference material SMP/E1-002

1995 ◽  
Vol 351 (2-3) ◽  
pp. 173-180
Author(s):  
J. J. LaBrecque ◽  
D. V. de Leyt ◽  
C. Vazquez
Keyword(s):  
Blast Furnace ◽  
Reference Material ◽  
Blast Furnace Slag ◽  
Furnace Slag

Synthesis and Characterisation of Slag Based Geopolymers

2010 ◽  
Vol 636-637 ◽  
pp. 155-160 ◽  
Author(s):  
C. Panagiotopoulou ◽  
Glykeria Kakali ◽  
Sotiris Tsivilis ◽  
T. Perraki ◽  
Maria Perraki
Keyword(s):  
Compressive Strength ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Starting Material ◽  
Alkaline Media ◽  
High Compressive Strength ◽  
Geopolymer Matrix ◽  
Furnace Slag ◽  
Alkali Ion

In the present work the geopolymerisation of blast furnace slag (GGBS) under varying conditions is being investigated. The experimental comprises the following parts: i) dissolution of slag in alkaline media and the investigation of the effect of the alkali ion (K or Na) on the dissolution of Al+3 and Si4+, ii) synthesis of slag based geopolymers and the investigation of the effect of the Si/Al ratio and the kind of alkaline ion on the development of the compressive strength and iii) characterization of geopolymers by means of XRD, FTIR and SEM/EDS measurements. As it is concluded, blast furnace slag geopolymers exhibit high compressive strength, with the maximum being 112.7±2 MPa. The Si/Al ratio of the starting material is found to affect strongly the development of the geopolymer compressive strength. The microstructure of slag–based geopolymers and the incorporation of Ca in the geopolymer matrix are also discussed.

Characterization of Delayed Coke and Fluid Coke Gasification Using Blast Furnace Slag as a Disposable Catalyst

2019 ◽  
Vol 33 (7) ◽  
pp. 6734-6741 ◽  
Author(s):  
Rongxuan Linghu ◽  
Yindong Liu ◽  
Yuming Zhang ◽  
Yongmin Zhang ◽  
Jinsen Gao ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Fluid Coke ◽  
Furnace Slag
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