Mineralogy, Chemical Characteristics and Upgrading of Beach Ilmenite of the Top Meter of Black Sand Deposits of the Kafr Al-Sheikh Governorate, Northern Egypt
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:


Mineralogy, Chemical Characteristics and Upgrading of Beach Ilmenite of the Top Meter of Black Sand Deposits of the Kafr Al-Sheikh Governorate, Northern Egypt
Author:
Affiliation:

Fund Project:

The authors acknowledge the journal reviewers, for their very constructive and helpful comments as well as for Editors-in-Chief (Drs. Degan Shu and Fei Hongcai) comments and handling, which helped to improve the manuscript.

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    Abstract:

    Egyptian beach ilmenite occurs in a relatively high content in the naturally highly concentrated superficial black sand deposits at specific beach zones in the northern parts of the Nile Delta at Rosetta.?Microscopic study shows that the ilmenite occurs as fresh homogeneous black or heterogeneous multicoloured altered grains and exhibits three types (homogeneous, exsolved and altered) of ilmenite varieties. XRD data of ilmenite indicates their association with minor hematite and quartz, whereas leucoxene shows its association with Nb-rutile, pseudorutile and hematite.?Grain size distribution suggests a very fine sand size of >89% and 80% and a fine sand size of 10.5% and 18.3% for?fresh and altered ilmenites, respectively. The density of fresh, altered ilmenite and leucoxene concentrates varies from 2.70, 2.50 to 2.40 ton/m3, suggesting a gradual decrease from high grade fresh to leucoxene and consistent with variation in magnetic susceptibility as a consequence of the leaching of iron. Mass magnetic susceptibility reveals 97.6% of ilmenite and 92% of the altered form are obtained at 0.20 and 0.48 ampere. Fresh ilmenite exhibits variable TiO2?(47.18%) and Fe2O3T?(46.10%) with minor MnO, MgO and Cr2O3?(1.22, 1.10 and 0.51%). The altered ilmenite is higher in TiO2?(76.16%) and SiO2?(4.68%) and lower in Fe2O3T?(14.45%), MnO, MgO and Cr2O3?(0.39, 0.52 and 0.11%) compared with the fresh form.??Three concentrates of ilmenites (G1, G2 and G3) were prepared from crude ore using a Reading cross belt magnetic separator under different conditions, revealing a gradual increase of TiO2, SiO2, Al2O3?and CaO accompanied by a decrease of Fe2O3T, MgO and Cr2O3?with repetition of the separation?processes. Several ore dressing techniques were carried out to upgrade the ilmenite concentrate.

    参考文献
    相似文献
    引证文献
引用本文

Abdel-Aal M.?ABDEL-KARIM, Mohamed I. MOUSTAFA, Adel H. El-AFANDY, Mohamed G. BARAKAT.2017. Mineralogy, Chemical Characteristics and Upgrading of Beach Ilmenite of the Top Meter of Black Sand Deposits of the Kafr Al-Sheikh Governorate, Northern Egypt[J]. ACTA GEOLOGICA SINICA(English edition),91(4):1326~1338

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2016-03-13
  • 最后修改日期:2016-05-16
  • 录用日期:
  • 在线发布日期: 2017-08-18
  • 出版日期: