Sulfur in iron ore pellets and its liberation in the Midrex direct reduction process

1990 ◽  
Vol 7 (3) ◽  
pp. 141-143
Author(s):  
J. A. M. Cano ◽  
F. Wendling ◽  
G. M. Peixoto
Author(s):  
Y. Shajari ◽  
A. Reyhanizadeh ◽  
N. Towhidi ◽  
Z. S. Seyedraoufi ◽  
H. Bakhtiari

Iron ore pellets are the raw materials for direct reduction process of iron ore to sponge iron pellets and is an important step in the iron and steel production chain. Many of the defects in direct reduction and steel making processes could be identify in the iron ore processing stage. Therefore, the purpose of this study was to select the correct suppliers of iron ore pellets for direct reduction units based on criteria affecting the strength of cooked pellets, which played a key role in optimizing the production criteria of sponge iron and ultimately increasing production efficiency in the steelmaking stage which can be very effective. For this purpose, using the hierarchical analysis model, the parameters affecting the strength of pellets have been identified and studied by experts of several iron and steel production units, and finally, for example, several iron ore pellet production plants have been compared and ranked. According to AHP decision criteria, particle size is the most important parameter affecting the strength of cooked pellets.


2016 ◽  
Vol 55 (3) ◽  
pp. 345-355 ◽  
Author(s):  
T. Jiang ◽  
L. Yang ◽  
G. Li ◽  
J. Luo ◽  
J. Zeng ◽  
...  

2016 ◽  
Vol 148 ◽  
pp. 276-281 ◽  
Author(s):  
Dabin Guo ◽  
Liandong Zhu ◽  
Sheng Guo ◽  
Baihui Cui ◽  
Shipeng Luo ◽  
...  

2013 ◽  
Vol 746 ◽  
pp. 533-538 ◽  
Author(s):  
Ying Yi Zhang ◽  
Yuan Hong Qi ◽  
Zong Shu Zou ◽  
Yun Gang Li

Summarized the development situation of rotary hearth furnace (RHF) direct reduction technology, ore resource allocation situation and direct reduction iron demand. The survey results show that: China's iron ore resource allocation heavily rely on imported iron ore, gas-based direct reduction process (MIDREX, HYL-III, FINMET) is not likely to be the mainly direct reduced iron (DRI) process in China. However, non coking coal resources is very rich in China, research and development of coal-based direct reduction process (such as FASTMET and ITMK3 process) has important practical significance, it can strengthen the comprehensive utilization on low grade iron ore, associated mineral resources and iron & steel plant dust and sludge. It has great significance to alleviate steel scrap demand and stable development of the iron and steel industry and protect the national economic security in China.


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