Reduction of composite pellet containing indonesia lateritic iron ore as raw material for producing TWDI

Adji Kawigraha, Johny Wahyuadi Soedarsono, Sri Harjanto., Pramusanto

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Citations (Scopus)

Abstract

Blast furnace process is still an important process for producing pig iron. The process needs high grade iron ore and coke. The two materials can not be found easily. In addition blast furnace process needs cooking and sintering plant that produces polluted gases. Utilization of composite pellet for pig iron production can simplify process. The pellet is made of iron ore and coal. In addition the pellet can be made from other iron source and coal. This paper discusses the evolution of phase during reduction of composite pellet containing lateritic iron ore. Fresh iron ore and coal were ground to 140 mesh separately. They were mixed and pelletized. The quantity of coal added was varied from 0%, 20% and 29% of pellet weight. Pellets were heated with 10 °C/minute to 1100 °C, 1200 °C, 1300 °C and 1350 °C in a tube furnace and temperature was held during 10 minutes. Heated pellets were analyzed with XRD equipment. XRD of reduced pellets showed that iron phase change with coal and temperature. Lack of coal during heating results the re-oxidaton of iron phases. This process is due to replacement of reductive atmosphere by oxidative atmosphere.

Original languageEnglish
Title of host publication2nd International Conference on Mechanical Engineering, Materials and Energy, ICMEME 2012
Pages490-495
Number of pages6
DOIs
Publication statusPublished - 1 Feb 2013
Event2nd International Conference on Mechanical Engineering, Materials and Energy, ICMEME 2012 - Dalian, China
Duration: 26 Oct 201227 Oct 2012

Publication series

NameApplied Mechanics and Materials
Volume281
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2nd International Conference on Mechanical Engineering, Materials and Energy, ICMEME 2012
CountryChina
CityDalian
Period26/10/1227/10/12

Keywords

  • Composite pellet
  • Iron ore reduction
  • Lateritic iron ore

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