Contact sorption drying of chromite concentrates
DOI:
https://doi.org/10.17159/Abstract
It's not uncommon for chromite ore to have elevated moisture contents, after dewatering, which must be reduced to levels between 8% and 10% per mass for further reprocessing. Contact sorption drying has shown promise in work done on fine coal. This method was used to study the dewatering of chromite ore using 3 mm spherical activated alumina ceramic beads as a sorbent. Three different sorbent-to-chromite mass ratios, namely 0.5:1, 1:1 and 2:1, were tested with different process conditions. One of these conditions included testing the sorbent’s dewatering capability in a stationary and a rotational bed. The experimental work showed that it was possible to achieve the target moistures in less than 10 minutes, irrespective of the ratios used. The ratios where the sorbents were equal or abundant in mass, however, proved to be the best. The sorbent reusability of both the 1:1 and 2:1 mass ratios were therefore tested. In a 1:1 mass ratio, the sorbents could be reused for three cycles while in the 2:1 ratio, the number of cycles increased to six. The sorbent-to-chromite mass ratio used had a significant influence on the required contact time and the reusability of the sorbents.
Downloads
Published
Issue
Section
License
Copyright (c) 2024 Cheranté Snyman, Marco le Roux, Shani Engelbrecht, Quentin Peter Campbell
This work is licensed under a Creative Commons Attribution 4.0 International License.
THE INSTITUTE, AS A BODY, IS NOT RESPONSIBLE FOR THE STATEMENTS AND OPINIONS ADVANCED IN ANY OF ITS PUBLICATIONS.
Copyright© 1978 by The Southern African Institute of Mining and Metallurgy. All rights reserved. Multiple copying of the contents of this publication or parts thereof without permission is in breach of copyright, but permission is hereby given for the copying of titles and abstracts of papers and names of authors. Permission to copy illustrations and short extracts from the text of individual contributions is usually given upon written application to the Institute, provided that the source (and where appropriate, the copyright) is acknowledged. Apart from any fair dealing for the purposes of review or criticism under The Copyright Act no. 98, 1978, Section 12, of the Republic of South Africa, a single copy of an article may be supplied by a library for the purposes of research or private study. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means without the prior permission of the publishers. Multiple copying of the contents of the publication without permission is always illegal.
U.S. Copyright Law applicable to users In the U.S.A.
The appearance of the statement of copyright at the bottom of the first page of an article appearing in this journal indicates that the copyright holder consents to the making of copies of the article for personal or internal use. This consent is given on condition that the copier pays the stated fee for each copy of a paper beyond that permitted by Section 107 or 108 of the U.S. Copyright Law. The fee is to be paid through the Copyright Clearance Center, Inc., Operations Center, P.O. Box 765, Schenectady, New York 12301, U.S.A. This consent does not extend to other kinds of copying, such as copying for general distribution, for advertising or promotional purposes, for creating new collective works, or for resale.
