Effects of Raw Material Contaminants on the Ferrosilicon Melting Process in the Submerged Arc Furnace

2013 ◽  
Vol 212 ◽  
pp. 183-186 ◽  
Author(s):  
Bolesław Machulec ◽  
Wojciech Bialik
Keyword(s):  
Melting Process ◽  
Raw Material ◽  
Smelting Process ◽  
Arc Furnace ◽  
System A ◽  
Model Sets ◽  
Reaction Zones ◽  
Lower Temperature ◽  
Submerged Arc Furnace ◽  
Submerged Arc

Based on the Minimum Gibbs Free Enthalpy algorithm (FEM) and a model of reaction zones located around electrode tips in the submerged arc furnace, an analysis of the raw material chemical composition influence on the ferrosilicon smelting process was carried out. A model of the ferrosilicon process in the submerged arc furnace is a system of two closed isothermal reactors: an upper one with a lower temperature T1, and a lower one with a higher temperature T2. Between the reactors and the environment as well as between the reactors inside the system, a periodical exchange of mass occurs at the moments when the equilibrium state is reached. Based on the model, sets of calculations were performed: for a Fe-Si-O-C system and, subsequently, for a more complex Fe-Si-O-C-Al-Ca-Mg-Ti system. For both systems, the energy and mass balance values were calculated and the effects of raw material contaminants on the efficiency of the ferrosilicon melting process were determined.

Evaluation and synergy of material and energy in the smelting process of ferrochrome pellets in steel belt sintering-submerged arc furnace

Energy ◽  
2019 ◽  
Vol 179 ◽  
pp. 792-804 ◽  
Author(s):  
Yang Yu ◽  
Baokuan Li ◽  
Changjun Wang ◽  
Zhengzhe Fang ◽  
Xiao Yang ◽  
...  
Keyword(s):  
Smelting Process ◽  
Arc Furnace ◽  
Submerged Arc Furnace ◽  
Submerged Arc

scholarly journals Comparison the Physico-Chemical Model of Ferrosilicon Smelting Process with Results Observations of the Process under the Industrial Conditions

2016 ◽  
Vol 61 (1) ◽  
pp. 265-270 ◽  
Author(s):  
B. Machulec ◽  
W. Bialik
Keyword(s):  
Reduction Process ◽  
Smelting Process ◽  
System A ◽  
Physico Chemical ◽  
Charge Zone ◽  
Calculation Results ◽  
Higher Temperature ◽  
Lower Temperature ◽  
Submerged Arc Furnace ◽  
Silica Reduction

Based on the minimum Gibbs Free Enthalpy algorithm (FEM), model of the ferrosilicon smelting process has been presented. It is a system of two closed isothermal reactors: an upper one with a lower temperature T1, and a lower one with a higher temperature T2. Between the reactors and the environment as well as between the reactors inside the system, a periodical exchange of mass occurs at the moments when the equilibrium state is reached. The condensed products of chemical reactions move from the top to the bottom, and the gas phase components move in the opposite direction. It can be assumed that in the model, the Reactor 1 corresponds to the charge zone of submerged arc furnace where heat is released as a result of resistive heating, and the Reactor 2 corresponds to the zones of the furnace where heat is produced by electric arc. Using the model, a series of calculations was performed for the Fe-Si-O-C system and was determined the influence of temperatures T1, T2 on the process. The calculation results show a good agreement model with the real ferrosilicon process. It allows for the determination of the effects of temperature conditions in charge zones and arc zones of the ferrosilicon furnace on the carbothermic silica reduction process. This allows for an explanation of many characteristic states in the ferrosilicon smelting process.

The Research on Effects of Different Binders on Performances of Carbonaceous Pelletizing in Industrial Silicon Production

2015 ◽  
Vol 833 ◽  
pp. 101-106
Author(s):  
Ni Yang ◽  
Gang Xie ◽  
Chong Jun Bao ◽  
Huai Ren Li ◽  
Xiao Hua Yu ◽  
...  
Keyword(s):  
Production Cost ◽  
Production Costs ◽  
Smelting Process ◽  
Powder Materials ◽  
Arc Furnace ◽  
Pore Former ◽  
Silicon Production ◽  
Submerged Arc Furnace ◽  
Submerged Arc

The use of powder materials in smelting process has some impact on the breathability of the burden, and it ultimately results in poor production and quality of industrial silicon. If pelletizing is prepared by these powder materials, it not only reduces production cost but also reuses waste effectively. It could protect forest resources productively and contributes to sustainable development if charcoal is replaced by pelletizing using as carbonaceous reducing agent. Different powders such as anthracite fine, petroleum coke powders, charcoal powders, silica fume have been produced in the production process of industrial silicon. Briquetting of these powders with a binder starch D was voted into submerged arc furnace not only utilizes the resources sufficiently, but also reduces the production costs. Effects of content of starch D as binder and CaO as pore former on compressive strength, the shatter strength, the heat intensity and porosity of pelletizing were investigated in this paper. The following results were got: first, the performances of pelletizing except porosity were excellent when starch D was used as binder; second, CaO could efficiently improve porosity, and the pelletizing could satisfy requirement of industrial silicon production.

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