scholarly journals Recovery of Titanium Compounds from Ti-enriched Product of Alkali Melting Ti-bearing Blast Furnace Slag by Dilute Sulfuric Acid Leaching

2016 ◽  
Vol 31 ◽  
pp. 977-984 ◽  
Author(s):  
Siqi He ◽  
Hongjuan Sun ◽  
Daoyon g Tan ◽  
Tongjiang Peng
Keyword(s):  
Blast Furnace ◽  
Sulfuric Acid ◽  
Blast Furnace Slag ◽  
Acid Leaching ◽  
Sulfuric Acid Leaching ◽  
Dilute Sulfuric Acid ◽  
Titanium Compounds ◽  
Furnace Slag

scholarly journals Sulfuric Acid Resistance of Concrete with Blast Furnace Slag Fine Aggregate

2014 ◽  
Vol 8 (11) ◽  
Author(s):  
Paweena Jariyathitipong ◽  
Kazuyoshi Hosotani ◽  
Takashi Fujii ◽  
Toshiki Ayano
Keyword(s):  
Blast Furnace ◽  
Sulfuric Acid ◽  
Blast Furnace Slag ◽  
Acid Resistance ◽  
Fine Aggregate ◽  
Furnace Slag

Durability of Blended PFA and POFA Geopolymer Concrete

2015 ◽  
Vol 754-755 ◽  
pp. 359-363
Author(s):  
M. Azreen ◽  
M.W. Hussin
Keyword(s):  
Blast Furnace ◽  
Sulfuric Acid ◽  
Structural Analysis ◽  
Blast Furnace Slag ◽  
Cement Industry ◽  
Supplementary Cementitious Materials ◽  
Palm Oil Fuel Ash ◽  
Sulfate Solutions ◽  
Fuel Ash ◽  
Furnace Slag

Ordinary Portland Cement (OPC) concrete is one of the most widely used construction materials globally, though its production in construction has negative environmental impact. About 0.9 ton of CO2is emitted for every one (1) ton of cement produced. In order to reduce the amount of CO2emission from cement industry, the utilization of supplementary cementitious materials such as pulverized fuel ash (PFA), blast-furnace slag and natural pozzolans is common and effective. Geopolymer is an inorganic binder material and can be produced by a geopolymeric reaction of alkali activating solution with silica and alumina rich source materials such as PFA and blast-furnace slag. In this study, the durability of concrete such as the resistance to sulfuric acid and sulfate solutions due to the effect of blended as of PFA and palm oil fuel ash (POFA), along with alkaline activators were investigated. Consequently, the optimum mix design of the blended ash geopolymer (BAG) concrete and OPC concrete specimens were prepared with water to cement ratio of 0.5 by mass as control. The micro structural analysis by X-ray diffraction (XRD) was done. BAG concrete showed better performance in 2% sulfuric acid and 5% sulfate solutions. From micro structural analysis, it was evident that BAG binder gel (N-A-SH) produced more durable material compared with C-S-H binder gel of OPC. The BAG concrete is strongly recommended to be used as an alternative to OPC concrete in addition to its environmental friendliness. Abundant PFA and POFA can be efficiently utilized to produce a high performance concrete.

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

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