Flue gas desulfurization (FGD) steel slag ameliorates salinity, sodicity, and adverse physical properties of saline-sodic soil of middle Yellow River, China

ABSTRACT Flue-gas desulfurization (FGD) gypsum has occasionally been used as an additive to cement. Consequently, appropriate facilities are required to ensure the environmentally safe processing of FGD gypsum and the resulting cement material properties. Such facilities are yet to be developed because the amount of FGD gypsum used is still small when compared with the vast amounts of FGD gypsum generated. In this study, we analyze the effect of FGD gypsum addition on the physical properties, stabilization, and radon count of steam-cured mortar and compare its performance with air-cured mortar. Our results show that the steam-cured pozzolanic hydration products of ettringite and C-S-H promote the densification of the mortar structure, thereby resulting in nanopore size reduction and increased strength of FGD gypsum mortar subsequent to the steam-cured hydration process. Further, our environmental test results indicate that steam-cured pozzolanic materials composed of FGD gypsum are environmentally safer than air-cured cementitious materials.

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Preparation Eco-Cement with Semi Dry FGD Ash from Steel Plant

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.665.379 ◽

2014 ◽

Vol 665 ◽

pp. 379-382

Author(s):

Ren Ping Liu ◽

Rui Yao

Keyword(s):

Flue Gas ◽

Blast Furnace Slag ◽

Setting Time ◽

Steel Slag ◽

Flue Gas Desulfurization ◽

Hydration Properties ◽

Final Setting Time ◽

Steel Factory ◽

Granulated Blast Furnace Slag ◽

Furnace Slag

Some semi-dry Flue Gas Desulfurization ash (SDFGDA) were taken from sinter gas of steel factory and been oxidized at experimental condition. Oxidized ash, granulated blast-furnace slag (GBFS) and steel slag were grinded and used to prepare cementing materials. Scanning electron microscope (SEM) was employed to identify the samples in order to investigate their hydration structure. The result shows that cementing materials have good hydration properties and mechanical properties, the initial and final setting time are qualified. It is recommended to control the Blaine fineness, mount of SDFGDA, ratio of GBFS/steel slag, mount of clinker to be 4500cm2/g, 19%, 1:4, 20%, respectively, when prepare eco-cement with those materials.

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Integrated life cycle assessment of improving saline-sodic soil with flue gas desulfurization gypsum

Journal of Cleaner Production ◽

10.1016/j.jclepro.2018.08.062 ◽

2018 ◽

Vol 202 ◽

pp. 332-341 ◽

Cited By ~ 10

Author(s):

Jiayan Li ◽

Jinman Wang

Keyword(s):

Life Cycle Assessment ◽

Life Cycle ◽

Flue Gas ◽

Flue Gas Desulfurization ◽

Sodic Soil

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Experimental Study on Semi-Dry Flue Gas Desulfurization Ash Used in Steel Slag Composite Material

Characterization of Minerals, Metals, and Materials 2015 ◽

10.1002/9781119093404.ch67 ◽

2015 ◽

pp. 541-547

Author(s):

Lijun Lu ◽

Honghui Fang

Keyword(s):

Experimental Study ◽

Composite Material ◽

Flue Gas ◽

Steel Slag ◽

Flue Gas Desulfurization

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Remediation of heavily saline-sodic soil with flue gas desulfurization gypsum in Arid-Inland China

Soil Science & Plant Nutrition ◽

10.1080/00380768.2018.1471326 ◽

2018 ◽

Vol 64 (4) ◽

pp. 526-534 ◽

Cited By ~ 3

Author(s):

Zhiping Yang ◽

Qiang Zhang ◽

Long Liang ◽

Xunzhong Zhang ◽

Yongliang Wang ◽

...

Keyword(s):

Flue Gas ◽

Flue Gas Desulfurization ◽

Sodic Soil

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ALLEGHENY LUDLUM TYPE 317L, 317LX, 317LXN

Alloy Digest ◽

10.31399/asm.ad.ss0542 ◽

1993 ◽

Vol 42 (4) ◽

Keyword(s):

Corrosion Resistance ◽

Physical Properties ◽

Pitting Corrosion ◽

Flue Gas ◽

Heat Treating ◽

Flue Gas Desulfurization ◽

Low Carbon ◽

Austenitic Alloys ◽

Service Conditions ◽

Nitrogen Contents

Abstract TYPE 317L, 317LX, and 317LXN are austenitic alloys with varying molybdenum and nitrogen contents and thus have varying levels of resistance to pitting corrosion. All are low carbon to resist sensitization. All three alloys are intended for severe service conditions such as flue gas desulfurization systems. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-542. Producer or source: Allegheny Ludlum Corporation.

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