A kind of beneficiation method for the separation of iron and titanium in titania-iron mixed ore

A technology of ferro-titanium oxide and ore dressing method, which is applied in the direction of chemical instruments and methods, solid separation, magnetic separation, etc., can solve the problems of quality improvement and utilization technology blank, so as to improve utilization efficiency and utilization value, improve selectivity, and enhance quality effect

Active Publication Date: 2022-07-05
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI +1
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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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  • A kind of beneficiation method for the separation of iron and titanium in titania-iron mixed ore
  • A kind of beneficiation method for the separation of iron and titanium in titania-iron mixed ore
  • A kind of beneficiation method for the separation of iron and titanium in titania-iron mixed ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

Embodiment 2

[0056] The raw materials are the same as those in Example 1, at a heating temperature of 750 °C, a heating time of less than 30 min, a fluidized roasting temperature of 650 °C, and CO+H 2 The concentration is 30%~50v / v%, the residence time is 30min, and the roasted product obtained under this condition is cooled by reducing gas protection. After the magnetic field strength of 80kA / m, the dry weak magnetic separation is carried out, and the tailings are separated by weak magnetic field. After 320kA / m dry strong magnetic separation. Obtained iron concentrate rate of 35.13%, TiO 2 Content 18.45%, TFe content 55.98%, TFe recovery rate 48.34%; titanium concentrate rate 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 rate 6.73%, TiO 2 Content 39.59%, TFe content 29.22%. (For the procedure, see Figure 5 )

Embodiment 3

[0058] A mixture of ilmenite 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%, the heating temperature is 600 ° C, the heating time is less than 30 minutes, the fluidized roasting temperature is 550 ° C, the CO concentration is 70% ~ 90v / v%, the residence time is 120 minutes, and it is cooled by nitrogen protection. The calcined products obtained under the same conditions were subjected to wet weak magnetic separation with a magnetic field strength of 240kA / m. Obtained iron concentrate rate of 17.92%, TiO 2 Content 19.48%, TFe content 54.67%, TFe recovery rate 25.85%; titanium concentrate rate 82.08%, TiO 2 Content 48.35%, FeO content 35.81%, Fe 2 O 3 Content 9.13%, TiO 2 The recovery rate was 91.92%. (For the procedure, see Figure 4 )

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Abstract

The present invention is a beneficiation method for separating iron and titanium from ilmenite mixed ore. In the suspended state, the material is roasted in a reducing atmosphere, and the obtained roasted product is cooled by water quenching, inert gas protection cooling or reducing gas protection cooling, and finally subjected to weak magnetic separation to obtain high-quality iron ore concentrate and high-quality titanium. concentrate; the method of the invention is suitable for the mixed raw material of ilmenite and hematite with serious oxidation, has high reaction efficiency and good separation effect, and can effectively improve the quality of ilmenite concentrate product.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of mineral resources, in particular to a beneficiation method used for the separation of iron and titanium from a mixed ore of titanium oxide and iron. Background technique [0002] Currently, 95% of the world's 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 titanium metal. 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 sponge titanium. [0003] The source of ilmenite mixed ore mainly comes from foreign titanium ore raw materials with low c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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