Carbon dioxide mineralization for the disposition of blast‐furnace slag: reaction intensification using NaCl solutions

2018 ◽  
Vol 10 (2) ◽  
pp. 436-448 ◽  
Author(s):  
Enze Ren ◽  
Siyang Tang ◽  
Changjun Liu ◽  
Hairong Yue ◽  
Chun Li ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Carbon Dioxide Mineralization ◽  
Furnace Slag

scholarly journals Microwave roasting of blast furnace slag for carbon dioxide mineralization and energy analysis

RSC Advances ◽  
2020 ◽  
Vol 10 (30) ◽  
pp. 17836-17844 ◽  
Author(s):  
Zike Han ◽  
Jianqiu Gao ◽  
Xizhi Yuan ◽  
Yanjun Zhong ◽  
Xiaodong Ma ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Blast Furnace ◽  
Solid Waste ◽  
Blast Furnace Slag ◽  
Energy Analysis ◽  
Waste Treatment ◽  
Microwave Roasting ◽  
Solid Waste Treatment ◽  
Carbon Dioxide Mineralization ◽  
Furnace Slag

This paper highlights the potential of microwave roasting in solid-waste treatment and carbon dioxide storage.

scholarly journals New technology in 3D Concrete Printing by Using Ground Granulated Blast-Furnace Slag: A Review

2021 ◽  
Vol 1200 (1) ◽  
pp. 012007
Author(s):  
Norhafizah Salleh ◽  
Nur Syahera Jamalulail ◽  
Noor Azlina Abdul Hamid ◽  
Zalipah Jamellodin ◽  
Masni A Majid ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Blast Furnace ◽  
3D Printing ◽  
Blast Furnace Slag ◽  
Research Study ◽  
Mix Design ◽  
Co2 Gas ◽  
Granulated Blast Furnace Slag ◽  
Carbon Dioxide Co2 ◽  
Furnace Slag

Abstract 3D building printing is a technology for producing 3D models of an object to build any shape or size in layers by using computer software. The development of 3D printing was going to be more famous and commercial in the future to reduce the construction cost and labor demands, sustainability, and to the greenest way. Concrete is the mixture that consists of the ingredients of water, binder (cement) and aggregates (rock, sand, gravel). The productions of Portland cement in construction leads to the emissions of carbon dioxide (CO2) gas into the air. Waste material has been used as cement replacement in this research study to reduce carbon dioxide (CO2) gas emissions. This research study was going to evaluate the viability of concrete for 3D printing and printing emphasizing the impact on potential opportunities of this innovative industry. The behaviour of 3D concrete printing and potential of modified mortar in 3D concrete mix design by using Ground Granulated Blast-Furnace Slag (GGBS) is used to evaluate the potential uses of GGBS in concrete mixture for 3D building printing. This research study involved the review of concrete compressive strength and workability of 3D concrete printing with the control aspect during process manufacturing. The result shows that the mix design of 3D concrete printing with 30% and 40% produced concrete strength of 47.33MPa and 47.67MPa respectively. Furthermore, control aspect requirements of concrete for 3D printing were discussed in the field extrudability, flowability, buildability, strength between layers, aggregates, and water-cement ratio. Throughout this study, the manufactures of 3D building printing materials using environmentally friendly elements can contribute effectively create a sustainable environment automatically.

scholarly journals Properties of Lightweight Matrix Using Industrial by-Products according to Mixing Ratio of NaOH and KOH

2018 ◽  
Vol 7 (3.34) ◽  
pp. 576
Author(s):  
Jin Hyun Shin ◽  
Won Gyu ◽  
Sang Soo Lee
Keyword(s):  
Carbon Dioxide ◽  
Blast Furnace ◽  
Comparative Analysis ◽  
Blast Furnace Slag ◽  
Absorption Rate ◽  
Air Bubbles ◽  
Mixing Ratio ◽  
Bubble Generation ◽  
Furnace Slag ◽  
By Products

Background/Objectives:When producing 1 ton of cement, it produces 0.9 tons of carbon dioxide, so it is very important to reduce the use of cement or to find an alternative material.Methods/Statistical analysis: In order to replace cement which is frequently used to make lightweight cured products, blends of blast furnace slag, polysilicon and paper ash were used as binders. In order to stimulate the hardening of blast furnace slag, comparative analysis of characteristics of alkali stimulants was carried out by using KOH and NaOH as alkali stimulants.Findings: In order to improve the foaming performance for the production of lightweight Matrix, we used polysilicon and paper ash as well as blast furnace slag as one of industrial by - product a binder. KOH and NaOH were used as alkali stimulants. The experimental results are as follows.When alkali stimulants are used, the density decreases and the absorption rate increases. It is considered that the use of an alkali stimulant causes air bubbles to occur, resulting in a lower density and an increased absorption rate. The use of NaOH rather than KOH seems to result in better bubble generation. Strength was significantly decreased when alkali stimulants were used, but it was confirmed that the strength of NaOH was increased than that of KOH.Improvements/Applications: As a result of this study, we will fabricate a lightweight matrix that can be used as a prototype by using NaOH according to KS F 2701 standards. 

scholarly journals Carbon Dioxide Absorption by Blast-Furnace Slag Mortars in Function of the Curing Intensity

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2346 ◽  
Author(s):  
Miguel Ángel Sanjuán ◽  
Esteban Estévez ◽  
Cristina Argiz
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Blast Furnace ◽  
Greenhouse Gas ◽  
Blast Furnace Slag ◽  
Ghg Emissions ◽  
Cement Clinker ◽  
Co2 Uptake ◽  
Controlled Conditions ◽  
Furnace Slag

Climate change is one of the most important issues affecting the future of the planet. Then, a lot of resources are being used to actively work on climate change issues and greenhouse gas reduction. Greenhouse gas (GHG) emissions are monitored by each country and reported yearly to the United Nations Framework Convention on Climate Change (UNFCCC). The Intergovernmental Panel on Climate Change (IPCC) published the document entitled “2006 IPCC Guidelines for National Greenhouse Gas Inventories” to provide the calculation rules and the way to inform the UNFCCC of the national GHG emissions. Currently, this document does not give a procedure to calculate the net carbon dioxide emissions to the atmosphere due to the Portland cement clinker production. The purpose of this paper is to get reliable relationships to better calculate the CO2 uptake by ground granulated blast-furnace slag (GGBFS) mortars. The application of this material cured under controlled conditions could help minimize environmental impact. Carbonation coefficient versus 28-day compressive strength relationship of mortars elaborated with GGBFS and cured underwater for 0, 1, 3, 7, 14, or 28 days were obtained. The main finding is the extreme sensitivity of the GGBFS mortars to the curing intensity and, therefore, they can be used cured under controlled conditions to minimize carbon footprints.

scholarly journals CO2 mineral sequestration with the use of ground granulated blast furnace slag

2017 ◽  
Vol 33 (1) ◽  
pp. 111-124 ◽  
Author(s):  
Alicja Uliasz-Bocheńczyk ◽  
Eugeniusz Mokrzycki
Keyword(s):  
Carbon Dioxide ◽  
Blast Furnace ◽  
Carbon Dioxide Emissions ◽  
Blast Furnace Slag ◽  
Binding Capacity ◽  
Steel Production ◽  
Waste Products ◽  
Iron And Steel ◽  
Mineral Sequestration ◽  
Furnace Slag

Abstract The mineral sequestration using waste products is a method of reducing CO2 emissions that is particularly interesting for major emitters and producers of mineral wastes, such as iron and steel industries. The CO2 emissions from iron and steel production amounted to 6,181.07 kt in 2014 (PNIR 2016). The aforementioned industry participates in the EU emission trading system (EU ETS). However, blast furnace processes produce mineral waste - slag with a high content of CaO which can be used to reduce CO2 emissions. Metallurgical slag can be used to carry out direct (a one-step process) or indirect (two-stage process) process of mineral sequestration of carbon dioxide. The paper presents the degree of carbonation of the examined samples of granulated blast furnace slags defined by the six-digit code (10 02 01) for the waste and the respective two-digit (10 02) chapter heading, according to the Regulation of the Minister of the Environment of 9 December 2014 on the waste catalogue. The carbonation process used the direct gas-solid method. The slags were wetted on the surface and treated with CO2 for 28 days; the obtained results were compared with the analysis of fresh waste products. The analyzed slags are characterized by a high content of calcium (nearly 24%), while their theoretical binding capacity of CO2 is up to 34.1%. The X-ray diffraction (XRD) analysis of the phase composition of slags has revealed the presence of amorphous glass phase, which was confirmed with the thermogravimetric (DTA/TG) analysis. The process of mineral sequestration of CO2 has resulted in a significant amount (9.32%) of calcium carbonate - calcite, while the calculated degree of carbonation of the examined blast furnace slag is up to 39%. The high content of calcium, and a significant content of CaCO3-calcite, has confirmed the suitability of the discussed waste products to reduce carbon dioxide emissions.

Study on the Shrinkage of a Full-Scale Wall Made with Blast Furnace Slag Fine Aggregates

CONCREEP 10 ◽  
2015 ◽  
Author(s):  
Tomiyuki Kaneko ◽  
Keiichi Imamoto ◽  
Chizuru Kiyohara ◽  
Akio Tanaka ◽  
Ayuko Ishikawa
Keyword(s):  
Blast Furnace ◽  
Blast Furnace Slag ◽  
Full Scale ◽  
Fine Aggregates ◽  
Furnace Slag
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