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A method for preparing titanium-rich material by using high calcium magnesium ilmenite and the prepared titanium-rich material

A technology of titanium-rich material and ilmenite, which is applied in the direction of improving process efficiency, can solve the problems of high cost of titanium-rich material and high equipment requirements, and can solve the problems of high energy consumption, lower energy consumption and lower preparation cost in the production process. Effect

Inactive Publication Date: 2020-07-28
YANGTZE NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a method for preparing titanium-rich materials by using high-calcium magnesia ilmenite and the prepared titanium-rich materials. This method solves the problems of high cost and high equipment requirements for preparing titanium-rich materials by traditional techniques, and can effectively Impurities such as iron, calcium, and magnesium in ilmenite are removed to prepare high-quality titanium-rich materials

Method used

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  • A method for preparing titanium-rich material by using high calcium magnesium ilmenite and the prepared titanium-rich material
  • A method for preparing titanium-rich material by using high calcium magnesium ilmenite and the prepared titanium-rich material
  • A method for preparing titanium-rich material by using high calcium magnesium ilmenite and the prepared titanium-rich material

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Embodiment 1

[0033] A method for preparing titanium-rich material by using high-calcium ilmenite, which uses Panzhihua high-calcium ilmenite as raw material to prepare titanium-rich material, and chemically analyzes the composition and content of the Panzhihua high-calcium ilmenite Analysis, its composition and its mass fraction are as shown in Table 1:

[0034] Table 1 Composition and mass fraction of Panzhihua high calcium magnesium ilmenite

[0035]

[0036]

[0037] Such as figure 1 As shown, it is a process flow chart of the method for preparing titanium-rich material by using high-calcium ilmenite of the present invention, and the method is specifically as follows:

[0038] (1) Lubrication step: mix ilmenite and additives according to the weight percentage of 90:0.1, add them into the lubricating mill and grind for 15 minutes; wherein, the additive used is analytically pure LiCl, and the impurities brought in by analytical pure Less, LiCl is used as the additive of the presen...

Embodiment 2

[0044] A method for preparing a titanium-rich material by using high-calcium ilmenite, using the high-calcium ilmenite described in Example 1 to prepare a titanium-rich material, the specific steps are as follows:

[0045] (1) Wetting and grinding step: mixing ilmenite and additives according to the weight percentage of 100:0.2, and adding them to the wetting mill to grind for 20 minutes; wherein, the additive used is analytically pure LiCl;

[0046] (2) Pre-oxidation step: using an electromagnetic induction tube to carry out pre-oxidation in stages, the temperature of pre-oxidation is 850 ° C, the time of pre-reduction is 45 minutes, and the reaction is carried out under a protective atmosphere of oxygen;

[0047] (3) Fluidized leaching and atomization steps: cooling the oxide material to room temperature during the removal stage, adding it to an ultrasonic fluidized reactor, leaching in 7:3 HCl and HF mixed acid for 2.5 hours, and filtering the separated filter residue It is...

Embodiment 3

[0051] A method for preparing a titanium-rich material by using high-calcium ilmenite, using the high-calcium ilmenite described in Example 1 to prepare a titanium-rich material, the specific steps are as follows:

[0052] (1) Wetting and grinding step: mixing ilmenite and additives according to the weight percentage of 120:0.4, and adding them to the wetting mill to grind for 25 minutes; wherein, the additive used is analytically pure LiCl;

[0053] (2) Pre-oxidation step: use electromagnetic induction tube to carry out pre-oxidation in stages, the temperature of pre-oxidation is 900°C, the time of pre-reduction is 50 minutes, and react under the protective atmosphere of oxygen;

[0054] (3) Fluidized leaching and atomization steps: cooling the oxide material to room temperature during the removal stage, adding it to an ultrasonic fluidized reactor, leaching in 7:3 HCl and HF mixed acid for 3 hours, and filtering the separated filter residue It is a water-containing titanium-...

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Abstract

The invention discloses a method for preparing a titanium-rich material from high-calcium high-magnesium ilmenite and the titanium-rich material prepared thereby. The method comprises the following steps: (1) wet grinding: uniformly mixing ilmenite and an additive according to a weight ratio of (90-120): (0.1-0.4) and then carrying out wet grinding; (2) pre-oxidation: carrying out a pre-oxidationreaction at 800 to 900 DEG C in a protective atmosphere of oxygen; (3) fluidization leaching and atomization: taking out an oxidized material obtained in the pre-oxidation stage, carrying out leachingwith mixed acid of HCl and HF in fluidization leaching, carrying out separating to obtain a filter residue which is a water-containing titanium-rich material, subjecting a filtrate obtained in the fluidization leaching to spray atomization and concentration, and returning the concentrated filtrate to the leaching process for recycling; and (4) drying: drying the obtained water-containing titanium-rich material to obtain the titanium-rich material. The method of the invention can effectively remove impurities such as iron, calcium and magnesium in ilmenite, and the mass fraction of TiO2 in theprepared titanium-rich material is greater than or equal to 91%.

Description

technical field [0001] The invention relates to a method for preparing a titanium-rich material, in particular to a method for preparing a titanium-rich material by using high-calcium magnesite ilmenite and the prepared titanium-rich material. Background technique [0002] Titanium-rich material generally refers to TiO 2 Electric furnace smelting titanium slag or artificial rutile with a content of not less than 75% is an important raw material for the production of titanium dioxide and titanium sponge. my country's Panxi region is rich in titanium resources, accounting for about 35.7% of the world's total proven titanium resources and 90.5% of the domestic proven titanium resources according to statistics. Primary rock ore, compact structure, large reserves, TiO 2 The content is low, while CaO, MgO, SiO 2 The high content of impurities such as titanium has led to the production of titanium-rich materials to become a weak technical link in my country's titanium industry. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/12
CPCC22B34/1227C22B34/1245Y02P10/20
Inventor 刘松利
Owner YANGTZE NORMAL UNIVERSITY