Effect of BaO and MnO on high-temperature properties and structure of blast furnace slag

2021 ◽  
Vol 571 ◽  
pp. 121066
Author(s):  
Jian Zhang ◽  
Cui Wang ◽  
Kexin Jiao ◽  
Jianliang Zhang ◽  
Zhengjian Liu ◽  
...  
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Blast Furnace Slag ◽  
High Temperature Properties ◽  
Furnace Slag

Reviews on the Geopolymer Materials for Coating Application

2012 ◽  
Vol 626 ◽  
pp. 958-962 ◽  
Author(s):  
Yahya Zarina ◽  
Mohd Mustafa Al Bakri Abdullah ◽  
H. Kamarudin ◽  
I. Khairul Nizar ◽  
Rafiza Abd Razak
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Fly Ash ◽  
Blast Furnace Slag ◽  
Coating Application ◽  
Existing Structures ◽  
Granulated Blast Furnace Slag ◽  
Temperature Exposure ◽  
New Applications ◽  
Furnace Slag

The application of geopolymer has been expand in many areas where before this it only used for the production of cement and concrete. One of the new applications of geopolymer is for coating. Metakaolin, fly ash and granulated blast furnace slag has been used as source for the production of geopolymer coating. The result for the geopolymer coating showed that it can prevent corrosion in seawater structure, high bonding strength between existing structures (OPC concrete), lower water permeability and also stable during high temperature exposure.

Research and Development of Mineral Wool Production with High Temperature Industrial Residual Materials

2013 ◽  
Vol 743-744 ◽  
pp. 301-305
Author(s):  
Guo Chao Qi ◽  
Feng Jun Shan ◽  
Qu Kai Zhang
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Energy Conservation ◽  
Solid Waste ◽  
Blast Furnace Slag ◽  
Ferrous Metal ◽  
Mineral Wool ◽  
Insulation Material ◽  
Wool Production ◽  
Furnace Slag

Mineral wool is a type of important material for basic infrastructure development and national economy. It is widely used as insulation material in construction industries. Some high temperature industrial solid waste materials, such as blast furnace slag, cyclone slag and some metal slag, after composition adjusting and reheating, can be directly used to produce mineral wool. The recycle of residual heat in the hot solid wastes can decrease the cost of mineral wool and is beneficial for energy conservation, environmental protection and social sustainable development. The development and technical characteristics of mineral wool production with blast furnace slag, cyclone slag and some non-ferrous metal slag have been analyzed in this paper, and the energy conservation technique in managing high temperature solid waste has been also discussed.

scholarly journals Characterization of Supplementary Cementitious Materials and Fibers to Be Implemented in High Temperature Concretes for Thermal Energy Storage (TES) Application

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5190
Author(s):  
Laura Boquera ◽  
David Pons ◽  
Ana Inés Fernández ◽  
Luisa F. Cabeza
Keyword(s):  
Tensile Strength ◽  
Blast Furnace ◽  
High Temperature ◽  
Blast Furnace Slag ◽  
Steel Slag ◽  
Cementitious Materials ◽  
Iron Silicate ◽  
Supplementary Cementitious Materials ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

Six supplementary cementitious materials (SCMs) were identified to be incorporated in concrete exposed to high-temperature cycling conditions within the thermal energy storage literature. The selected SCMs are bauxite, chamotte, ground granulated blast furnace slag, iron silicate, silica fume, and steel slag. A microstructural characterization was carried out through an optical microscope, X-ray diffraction analysis, and FT-IR. Also, a pozzolanic test was performed to study the reaction of SCMs silico-aluminous components. The formation of calcium silica hydrate was observed in all SCMs pozzolanic test. Steel slag, iron silicate, and ground granulated blast furnace slag required further milling to enhance cement reaction. Moreover, the tensile strength of three fibers (polypropylene, steel, and glass fibers) was tested after exposure to an alkalinity environment at ambient temperature during one and three months. Results show an alkaline environment entails a tensile strength decrease in polypropylene and steel fibers, leading to corrosion in the later ones.

scholarly journals Improvement of Calcium Aluminate Cement Containing Blast Furnace Slag at 50°C and 315°C

2022 ◽  
Vol 8 ◽  
Author(s):  
Wu Zhiqiang ◽  
Liu Hengjie ◽  
Qu Xiong ◽  
Wu Guangai ◽  
Xing Xuesong ◽  
...  
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Low Temperature ◽  
Calcium Aluminate ◽  
Heavy Oil ◽  
Blast Furnace Slag ◽  
Thermal Recovery ◽  
Calcium Aluminate Cement ◽  
Aluminate Cement ◽  
Furnace Slag

During the thermal recovery of heavy oil thermal recovery wells, improving the mechanical properties and integrity of the cement ring is of great significance for the safe and efficient exploitation of heavy oil resources. This paper studies the relative properties of calcium aluminate cement and three kinds of slags under the conditions of 50°C × 1.01 MPa and 315°C × 20.7 MPa. CAC-slag composite material performance was evaluated using the cement paste compressive strength and permeability tests to study the physical properties of CAC with blast furnace slag. X-ray diffraction analysis, scanning electron microscopy (SEM), and thermal analysis (DSC/TG) were carried out to investigate the mineralogical composition of CAC with blast furnace slag. Results show that adding blast furnace slag did not affect the performance of cement slurry. Moreover, C2ASH8 curing occurred at low temperature, the microstructure of CAC paste was compact, and the permeability resistance was improved, thus improving the low-temperature properties of neat CAC. When cured at a high temperature, the CAC paste was mainly hydrated with C3ASH4 and AlO(OH), which had a well-developed crystal structure. Adding blast furnace slag can improve the CAC resistance to high temperature.

Effect of High Temperature on Properties of Bricks Using Granulated Blast-Furnace Slag as Aggregate Replacement

2014 ◽  
Vol 600 ◽  
pp. 227-239
Author(s):  
Hanan A. El Nouhy
Keyword(s):  
Compressive Strength ◽  
Blast Furnace ◽  
High Temperature ◽  
Blast Furnace Slag ◽  
Room Temperature ◽  
Dry Weight ◽  
Fine Aggregate ◽  
Load Bearing ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

This research investigates the influence of high temperature on the properties of bricks containing non-ground granulated blast-furnace slag (GBFS) as fine aggregate replacement. Replacement percentages were 0%, 25% and 50% by dry weight of fine aggregates. The manufactured bricks were exposed to 200°С, 400°С, 600°С, and 800°С for a constant duration of two hours after 28 days of curing. Tests were conducted according to both Egyptian Standard Specifications (ESS) and American Society for Testing and Materials (ASTM) in order to determine compressive strength, absorption percentage, oven-dry weight, and ultrasound pulse velocity. Also, loss in weight was performed. Compressive strength limit regarding load-bearing units was met by mix 1 at all tested temperatures. Mixes 2 and 3, resulted in compressive strength that satisfied the requirement for load-bearing units at temperatures ranging from room temperature to 600°С.Compressive strength obtained regarding mixes 2 and 3 met the requirements of non-load bearing units at 800°С. The control mix resulted in normal weight bricks when tested at the various temperatures till 600°С. At 800°С, mixes 2 and 3 yielded light weight and medium weight bricks, respectively. There was a significant reduction in mass when comparing the mass at 800°С with the corresponding mass at room temperature concerning the three mixes. Results showed that it is feasible to partially replace fine aggregate with GBFS even when bricks are subjected to elevated temperature.

An environmental procedure to extract titanium components and metallic iron from Ti-bearing blast furnace slag

2015 ◽  
Vol 4 (4) ◽  
Author(s):  
Wu Zhang ◽  
Li Zhang ◽  
Yuhai Li ◽  
Xin Li
Keyword(s):  
Blast Furnace ◽  
High Temperature ◽  
Metallic Iron ◽  
Blast Furnace Slag ◽  
Gravity Separation ◽  
Modification Process ◽  
Temperature Modification ◽  
The Matrix ◽  
Furnace Slag ◽  
High Temperature Modification

AbstractAn environmental procedure to extract titanium components and metallic iron from Ti-bearing blast furnace slag is accomplished via three steps, which are high-temperature modification, gravity separation and hydrometallurgy method. The behaviors of metallic iron during the high-temperature modification process are studied. The feasibility of separating rutile from the matrix phase are investigated; based on the feasibility analysis results, the gravity separation experiment is carried out in order to improve the TiO

Sign in / Sign up

Export Citation Format

Share Document