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

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Abstract 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.

Key words： Binder Ilmenite pelletizing Adhesive film Gelatinization

Received: 22 September 2017 Published: 23 January 2019

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	Articles by authors
	CHEN Feng
	GUO Yu-Feng
	JIANG Shou
	YU Shuai
	ZHENG Fu-Jiang

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CHEN Feng,GUO Yu-Feng,JIANG Shou, et al. Development and mechanism analysis of a highly efficient binder in pelletizing of ilmenite used in electric furnace[J]. Journal of Iron and Steel Research International, 2018, 25(12): 1232-1236.

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