Experimental report on the selectivity of hematite ore in a certain area of ​​Shanxi

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Report Name: Shanxi Zuoquan County to red iron ore optional test study report format: word
Completion time: 2006 12
Publisher: Guo Changqing guidance of experts: exchanging views Gong Meiling Project leader: Zhang World Bank report <br> number of pages: Foreword beginning Total 32

Introduction to the report:

Foreword:
In December 2006, the Sucheng Hetie Mine in Zuoquan County, Shanxi Province, entrusted Xi'an Tianzhou Mining Technology Development Co., Ltd. to conduct an ore optional test study on the iron ore for the development and utilization of the mine. Reasonable process flow and economic and technical indicators provide reference for mine development and utilization.
After receiving the test sample, the tester first carried out the rock ore identification of the ore of the iron ore, and initially found that the rock deposited by the iron ore was a basic complex. Synchronous crystallization and melting of iron ore and basic complex rocks is the magnetite mineralization and mineralization of the magma crystallization during the magma, which belongs to the magma genetic type related to the basic complex. Due to the late weathering and hydrolysis, the ore suffers from a considerable oxidation, and a large amount of magnetite has been limonated, and then under the surface leaching, a secondary rich ore of amorphous colloidal Iron Oxide is formed. Due to the presence of these amorphous colloidal iron oxides, inevitably will affect the beneficiation index.
The main iron mineral of the Suxian iron ore mine in Shanxi is red limonite, containing a small amount of magnetite and hematite. For the nature of the ore, three processes are used for testing, namely: (1) weak magnetic-strong magnetic process Process; (2) re-election process; (3) magnetization roasting magnetic separation process. After comparison of the test data, it is finally recommended that the iron ore is suitable for the magnetic roasting magnetic separation process, which can obtain 62.64% of the iron concentrate grade and 71.26% of the iron recovery rate.

Conclusion:

1. The main iron mineral of an iron ore in Shanxi Suxian is red limonite, with a share of 79.66%, a magnetite of 4.65%, and an occupancy rate of only 11.44%. It is seen from the results of rock and mineral signing and iron phase analysis. The iron ore is mainly limonite.
2. The main iron-bearing mineral of the iron ore is limonite. The theoretical content of iron in limonite is about 57%. Heavy, magnetic and flotation are used, and high grade and recovery rate are not obtained. Only magnetized roasting can be adopted. ——The magnetic separation process can obtain 62.64% of iron concentrate grade and 71.26% of iron recovery rate.
3. Identification by rock ore: The main reason for affecting the grade of iron concentrate is: due to weathering, rain and hydrolysis in the later stage of mineralization, the ore is subject to considerable oxidation, and most magnetite has been limonated, and then Under the action of rain, the secondary enrichment of amorphous colloidal iron oxide is formed. These colloidal iron oxides are another reason for affecting the grade of iron concentrate.

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