Applications of Process Engineering Principles in Materials Processing, Energy and Environmental Technologies: An EPD Symposium in Honor of Professor Ramana G. Reddy: Poster Session
Sponsored by: TMS Extraction and Processing Division, TMS Light Metals Division, TMS: Energy Committee, TMS: Hydrometallurgy and Electrometallurgy Committee
Program Organizers: Shijie Wang, Rio Tinto Kennecott Utah Copper; Michael Free, University of Utah; Shafiq Alam, University of Saskatchewan; Mingming Zhang, Arcelor Mittal; Patrick Taylor, Colorado School of Mines
Tuesday 6:00 PM
February 28, 2017
Room: Hall B1
Location: San Diego Convention Ctr
Session Chair: Brad Wesstrom, Freeport McMoRan Company
N-1: Effect of Particle Size of Coal and Pyrolysis Temperature on Combustion Reactivity of Coal Char: Implications for Granular Coal Char Injection in a Blast Furnace: Chong Zou1; Cheng Ma1; Junxue Zhao1; 1Xi’an University of Architecture and Technology
The low-temperature pyrolysis technology is being developed in China for upgrading the low-rank coal quality. However, abundant coal char is difficult to be utilized reasonably. Using the granular coal char instead of pulverized coal in the fuel injection of blast furnace is likely to be a promising approach for making use of the coal char. In this paper, the impact of particle size of coal and pyrolysis temperature on combustion reactivity of coal char was investigated. Coal particles with different sizes were heated by temperature programming to a definite temperature under an inert atmosphere, and then the produced coal chars were reheating during an oxidizing atmosphere for examining the combustion reactivity. The results show that the particle size of raw coal could be enlarged but still meet the demand of blast furnace for the combustion reactivity of fuel, in the event that the pyrolysis temperature was reduced.
N-2: Influence of Diluents Dosage on the Performance of High Solid Anti-corrosion Coating by Converter Dust: Jinglong Liang1; Hui Li1; Ramana Reddy2; Yungang Li1; 1North China University of Science and Technology; 2The University of Alabama
High solid corrosion protective coatings were prepared by the dust of the converter with an average particle size of 59.33μm. The effect of different amount of diluent on the performance of high solid anti-corrosion coatings was studied with benzyl alcohol as diluent. With the increase of the amount of diluent, the viscosity of high solid anti-corrosion coatings reducing, the film apparent bubble content decreasing, and film resistant to salt water corrosion ability decreased, while acid corrosion capacity enhancement. When the dosage of diluents is 15%, the coating film is more resistant to acid corrosion.
N-3: Treatment of Blast Furnace Gas Washing Water by Utilization of Coagulation Associated with Microwave: Jun-hong Zhang1; Qing-hai Pang1; 1University of Science and Technology Liaoning
The condition for treating blast furnace gas washing water with coagulation in microwave field was determined. It indicates the affected factors in descending order on removal of SS in BF gas’s washing water: Added PAC Level, Added Phosphoric Acid Level, Time of Microwave Irradiation, and Microwave Power while those parameters that can affect suspended solids(SS)’s hardness reduction in descending order are Added Phosphoric Acid Level, Added PAC Level, Time of Microwave Irradiation, and Microwave Power. Also, it demonstrates those parameters that can affect washing water’s turbidity in descending order: Added PAC Level, Time of Microwave Irradiation, Added Phosphoric Acid Level, and Microwave Power. The results showed that PAC coagulation associated with microwave on treatment of Blast Furnace gas washing wastewater has such benefits: short treatment time, strong sedimentation velocity and other excellent characteristics, it can effectively remove suspended solids in wastewater, the SS hardness and turbidity can be reduced.
N-4: Permselectivity Study of Ion-exchange Membranes in the Presence of Cu-HEDP Complexes from a Copper Plating Wastewater Treatment: Juliana Jesus1; Tatiana Scarazzato1; Jorge Tenório1; Denise Espinosa1; 1University of São Paulo
The development of separation process for the wastewater treatment in distinct industrial process have been applied for recover water and inputs. Electrodialysis is an example of separation process with have been studied for electroplating wastewater treatment. The use of ion-exchange membranes and an electric energy allows the selectivity separation of ions in a solution. The HEDP is an organic acid with has been applied for the cyanide substitution in electroplating baths, and in this condition the electrodialysis has showed recover potential. The ion-exchange membrane used in an electrodialysis process with organic samples are exposed for extreme conditions. These conditions can provide degradation structure and loss of permeselectivity, which became the membrane unusual. The aim of this study is evaluate the influence of CuHEDP complexes in synthetic ion-exchange membranes using electrochemical test.
N-5: High Temperature Properties of Molten Nitrate Salt for Solar Thermal Energy Storage Application: Mehedi Mohammad1; Geoffrey Alan Brooks1; Muhammad Akbar Rhamdhani1; Muhamad Firdaus1; 1Swinburne University of Technology
Molten alkali nitrates are used commercially as thermal storage fluids (HTF) for solar thermal electricity generation. Their range of operation is limited by the thermal stability and this limits the energy (steam-Rankine cycle) efficiency of these processes. In this study, the effect of atmosphere on the thermal stability of nitrates was studied using simultaneous thermal analysis techniques (STA). The use of Oxygen as a blanket gas was found to delay the decomposition point of the ternary NaNO3-KNO3-LiNO3 (13.23-57.14-29.63 weight ratio) mixture by 55°C. By which operating range will increase 65°C more compared to the binary solar salt. Higher heating rates increased the decomposition point but has less effect on premelting and melting properties. NO, and O2 evolution after melting indicates concurrent reversible reactions. Similar phenomena were observed for single and binary nitrates. The eutectic melting point of ternary nitrate obtained from the STA agreed well with FactSage eutectic composition prediction.