Method for preparing titanium-enriched material from high-impurity-content ilmenite concentrate

A technology of titanium-rich materials and ilmenite, which is applied in the field of production of titanium-rich materials, can solve problems such as the inability to realize industrialization, and achieve the effects of less output of three wastes, easy handling, and convenient operation

Inactive Publication Date: 2011-09-14
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Abstract
  • Description
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Problems solved by technology

However, due to problems in process technology, equipment, product quality, and recycling of hydrochloric acid and by-product iron, it is impossible to realize industrialization

Method used

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  • Method for preparing titanium-enriched material from high-impurity-content ilmenite concentrate
  • Method for preparing titanium-enriched material from high-impurity-content ilmenite concentrate
  • Method for preparing titanium-enriched material from high-impurity-content ilmenite concentrate

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Embodiment 1

[0043] Aiming at the mineral characteristics of rock ore type ilmenite (such as Panxi vanadium titanomagnetite), the present invention provides a combined process flow consisting of many general processes, which is suitable for processing rock ore type ilmenite concentrate with high impurity content, And can produce high-quality titanium slag products, its technical route is: raw ore - magnetic separation - iron (vanadium) concentrate - tailings - flotation - ilmenite concentrate - roasting - magnetic separation - reduction smelting - titanium slag ( TiO 2 >80%)—purification—titanium-rich material (high-titanium slag), in which the production process of ilmenite concentrate is the same as the current production process, and the key point of the invention technology is the production of rich ilmenite concentrate (referred to as titanium concentrate) Titanium (TiO 2 >92%), taking Panxi ilmenite concentrate (referred to as titanium concentrate) as an example, the process is as f...

Embodiment 2

[0058] 1. Raw material of titanium concentrate

[0059] The raw material is titanium concentrate obtained by beneficiation and enrichment of Panzhihua vanadium-titanium magnetite ore, with a particle size of -200 mesh accounting for 29.8%. Its chemical composition is shown in Table 1.

[0060] Table 1 Chemical composition of titanium concentrate %

[0061]

[0062] 2. Roasting of titanium concentrate

[0063] Roasting is carried out in a rotary kiln. The optimal roasting conditions when the magnetic difference between ilmenite and gangue minerals is the largest are: roasting temperature 600-700°C, roasting time 1-3h.

[0064] ,magnetic separation

[0065] Grind the roasted titanium concentrate to -200 mesh, accounting for 50-85%, and perform titanium-rich and impurity removal magnetic separation under the condition of a magnetic field strength of 0.3T to produce titanium concentrate grade TiO 2 >49%, TiO 2 Yield > 95%, total impurities in titanium concentrate decrease...

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Abstract

The invention discloses a method for preparing a titanium-enriched material from high-impurity-content ilmenite concentrate, which relates to the technical field of a preparation method of a titanium-enriched material. The technical route is as follows: raw ore, magnetic separation, iron concentrate, tailings, floatation, ilmenite concentrate, roasting, magnetic separation, reduction smelting, titanium slag, purification and titanium-enriched material. The invention integrates the advantages of an electric-furnace smelting method and an acid leaching method, and overcomes the defects of the two methods; and thus, the method provided by the invention can be used for treating high-impurity-content rock-type ilmenite concentrate, and can also be used for producing a high-quality titanium slag product.

Description

[0001] technical field [0002] The present invention relates to the technical field of preparation methods of titanium-rich materials, in particular to a method for preparing titanium-rich materials from rock ore-type ilmenite with high content of impurities such as calcium and magnesium (such as Panxi vanadium-titanium magnetite in my country) Methods. Background technique [0003] Ilmenite can be divided into two categories: rock ore and placer. The rock deposit is a primary ore, which is a massive titanium deposit formed by magma differentiation. Rock ore ilmenite has dense ore structure, high gangue content, TiO 2 The ilmenite concentrate obtained through ore dressing contains more non-ferrous impurities, especially high MgO, and the concentrate TiO 2 The grade is generally between 44% and 48%, which is difficult to handle, and the recovery rate of ore dressing is low. [0004] The placer deposit is a secondary ore and belongs to a sedimentary titanium deposit. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/12C22B1/02C22B5/10C22B3/08C22B3/10
Inventor 李元坤刘亚川史光大闫武张裕书钟庆文徐建林余平
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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