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Beneficiation method for iron-titanium separation of titanium oxide-iron mixed ore

A technology of ferro-titanium oxide and mineral processing methods, which is applied in chemical instruments and methods, magnetic separation, solid separation, etc., and can solve problems such as quality improvement and utilization technology blanks

Active Publication Date: 2020-03-31
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, the upgrading and utilization technology for this type of ferro-titanium oxide mixed ore is basically blank, and it is mainly sold as an ingredient of better raw materials or a low-end product

Method used

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  • Beneficiation method for iron-titanium separation of titanium oxide-iron mixed ore
  • Beneficiation method for iron-titanium separation of titanium oxide-iron mixed ore
  • Beneficiation method for iron-titanium separation of titanium oxide-iron mixed ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A mixture of ilmenite oxide and hematite, TiO 2 Content 35.34%, FeO content 18.60%, Fe 2 o 3 The content is 37.36%, and the total of the three is 91.30%. At a heating temperature of 750°C, a heating time of less than 30min, a fluidized roasting temperature of 600°C, a CO concentration of 50% to 70v / v%, a residence time of 60min, and direct water quenching, here The roasted products obtained under the conditions are subjected to wet weak magnetic separation with a magnetic field strength of 160kA / m. Obtained iron ore concentrate yield 38.99%, TiO 2 content 21.40%, TFe content 53.44%, TFe recovery rate 52.30%; titanium concentrate yield 61.01%, TiO 2 Content 44.84%, FeO content 31.53%, Fe 2 o 3 Content 9.49%, TiO 2 The recovery rate is 76.63%. (See the process Figure 4 )

Embodiment 2

[0056] The raw materials are the same as in Example 1, at a heating temperature of 750°C, a heating time of less than 30min, a fluidized roasting temperature of 650°C, CO+H 2 The concentration is 30%~50v / v%, the residence time is 30min, and the roasted product obtained under the condition of cooling under the protection of reducing gas is subjected to dry weak magnetic separation with a magnetic field strength of 80kA / m. / m dry strong magnetic separation. Obtained iron ore concentrate yield 35.13%, TiO 2 content 18.45%, TFe content 55.98%, TFe recovery rate 48.34%; titanium concentrate yield 58.14%, TiO 2 Content 46.30%, FeO content 33.00%, Fe 2 o 3 Content 8.69%, TiO 2 Recovery rate 77.12%; tailings yield 6.73%, TiO 2 The content is 39.59%, and the TFe content is 29.22%. (See the process Figure 5 )

Embodiment 3

[0058] A mixture of ilmenite oxide and hematite, TiO 2 content 43.04%, FeO content 28.91%, Fe 2 o 3 The content is 21.99%, the total of the three is 93.94%. At a heating temperature of 600°C, a heating time of less than 30min, a fluidized roasting temperature of 550°C, a CO concentration of 70% to 90v / v%, and a residence time of 120min, it is cooled under nitrogen protection. The roasted products obtained under the conditions are subjected to wet weak magnetic separation with a magnetic field strength of 240kA / m. Obtained iron ore concentrate yield 17.92%, TiO 2 content of 19.48%, TFe content of 54.67%, TFe recovery rate of 25.85%; titanium concentrate yield of 82.08%, TiO 2 Content 48.35%, FeO content 35.81%, Fe 2 o 3 Content 9.13%, TiO 2 The recovery rate is 91.92%. (See the process Figure 4 )

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Abstract

The invention relates to a beneficiation method for iron-titanium separation of titanium oxide-iron mixed ore. The method comprises the following steps: firstly, rapidly heating main materials including titaniferous iron ore and hematite to 600-750 DEG C in an oxidizing atmosphere, then roasting materials in a suspension state in a reducing atmosphere, carrying out water quenching cooling, inertgas shielding cooling or reducing gas shielding cooling on an obtained roasted product, and finally, carrying out low-intensity magnetic separation to obtain high-quality iron ore concentrate and high-quality titanium ore concentrate. The method is suitable for severely oxidized ilmenite and hematite mixed raw materials, has the advantages of high reaction efficiency and good separation effect, and can effectively improve the quality of titanium concentrate products.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of mineral resources, in particular to a beneficiation method for separating iron and titanium from ferro-titanium oxide mixed ore. Background technique [0002] At present, 95% of the global titanium ore resources are used in the production of titanium dioxide, and only about 5% of the titanium ore resources are used in the production of metal titanium. The supply of titanium concentrate in my country can only meet half of the domestic demand, and it is mainly consumed in the production of titanium dioxide. The more than 500,000 tons of titanium raw materials required for the production of titanium metal basically need to be imported, because the quality and stability of my country's titanium concentrate cannot meet the needs of high-end titanium sponge. [0003] The source of ferro-titanium oxide mixed ore mainly comes from foreign titanium ore raw materials with low CaO and M...

Claims

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Application Information

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IPC IPC(8): B03C1/00
CPCB03C1/00B03C1/015
Inventor 胡泽松张裕书陈超董文钟金根阎镇张少翔刘能云
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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