Contribution to the recycling of rotary kiln dust in nickeliferous laterite reduction. Reductive behavior of the dust

Rigopoulos, E; Kostika, I-P; Zevgolis, EN; Halikia, I

dc.contributor.author	Rigopoulos, E	en
dc.contributor.author	Kostika, I-P	en
dc.contributor.author	Zevgolis, EN	en
dc.contributor.author	Halikia, I	en
dc.date.accessioned	2014-03-01T02:49:44Z
dc.date.available	2014-03-01T02:49:44Z
dc.date.issued	2004	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/34715
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-2642532772&partnerID=40&md5=18e3b49bf9da3f3964bd7c95a986bbbd	en
dc.subject	Ferronickel	en
dc.subject	Laterites	en
dc.subject	Metallurgy	en
dc.subject	Pellets	en
dc.subject	Reduction	en
dc.subject.other	Agglomeration	en
dc.subject.other	Dust	en
dc.subject.other	Electric furnaces	en
dc.subject.other	Gasification	en
dc.subject.other	Grain size and shape	en
dc.subject.other	Metallurgy	en
dc.subject.other	Operations research	en
dc.subject.other	Ore pellets	en
dc.subject.other	Pelletizing	en
dc.subject.other	Recycling	en
dc.subject.other	Reduction	en
dc.subject.other	Rotary kilns	en
dc.subject.other	Silicates	en
dc.subject.other	Smelting	en
dc.subject.other	Ferronickel	en
dc.subject.other	Lacro process	en
dc.subject.other	Laterites	en
dc.subject.other	Melting points	en
dc.subject.other	Nickel ore treatment	en
dc.title	Contribution to the recycling of rotary kiln dust in nickeliferous laterite reduction. Reductive behavior of the dust	en
heal.type	conferenceItem	en
heal.publicationDate	2004	en
heal.abstract	In the present study the reductive behavior of dust from the rotary kilns (R/K), in ferronickel production from nickeliferous Greek laterites, is investigated. The study concerns dust of various origins (washing towers, electrostatic filters, polycyclones) and pellets made from the dust. Reducibility was studied in the temperature range of 700°C to 850°C in a laboratory tube furnace. Experimental results showed that reduction degree increases with temperature up to about 800°C. The rate of reduction is great during the first minutes, giving a reduction degree R% equal to about 25%, in only a few minutes. After this, the rate is decreasing until it diminishes to zero after about 10-20 minutes of reaction. Maximum reduction degree achieved is 26 to 28%. Rates and reduction degrees at various temperatures are higher for the dust samples than those of the respective pellet samples.	en
heal.journalName	International Laterite Nickel Symposium	en
dc.identifier.spage	479	en
dc.identifier.epage	492	en