Development and mechanism analysis of a highly efficient binder in pelletizing of ilmenite used in electric furnace

The development and mechanism of a highly efficient binder in pelletizing of ilmenite from Panzhihua, China, were investigated. It shows that both the drop strength of green pellets and compressive strength of dried pellets were improved when using the mixtures of starch, NaOH and sodium silicate as...

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Bibliographic Details
Published inJournal of iron and steel research, international Vol. 25; no. 12; pp. 1232 - 1236
Main Authors Chen, Feng, Guo, Yu-feng, Jiang, Tao, Wang, Shuai, Zheng, Fu-qiang
Format Journal Article
LanguageEnglish
Published Singapore Springer Singapore 01.12.2018
Subjects
Applied and Technical Physics
Engineering
Machines
Manufacturing
Materials Engineering
Materials Science
Metallic Materials
Original Paper
Physical Chemistry
Processes
Binder
Pelletizing
Gelatinization
Ilmenite
Adhesive film
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Summary:The development and mechanism of a highly efficient binder in pelletizing of ilmenite from Panzhihua, China, were investigated. It shows that both the drop strength of green pellets and compressive strength of dried pellets were improved when using the mixtures of starch, NaOH and sodium silicate as the adhesive. Adhesive film was formed on the surface of particles as the function of sodium silicate, promoting the filling of gelatinized starch between the adhesive films to bond the particle tightly. The drop strength of green pellet was 1.3 times/(pellet 700 mm), and the compressive strength of dried pellet of 250 °C was 1825 N/pellets when 0.5 wt% NaOH, 1.0 wt% sodium silicate and 2.0 wt% starch were added as adhesive.
ISSN:1006-706X
2210-3988
DOI:10.1007/s42243-018-0060-0