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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Problems solved by technology

[0008] At present, the upgrading and utilization technology for this type of ferro-titanium oxide mixed o

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

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Example Embodiment

[0053] Example 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%. At the heating temperature of 750℃, the heating time is less than 30min, the fluidized roasting temperature is 600℃, the CO concentration is 50%~70v / v%, the residence time is 60min, and it is directly cooled by water quenching. The calcined product obtained under the conditions is subjected to wet weak magnetic separation with a magnetic field strength of 160kA / m. The yield rate of iron concentrate is 38.99%, TiO 2 The content is 21.40%, the TFe content is 53.44%, the TFe recovery rate is 52.30%; the titanium concentrate yield is 61.01%, TiO 2 The content is 44.84%, FeO content is 31.53%, Fe 2 O 3 Content 9.49%, TiO 2 The recovery rate was 76.63%. (See the process Figure 4 )

Example Embodiment

[0055] Example 2

[0056] The raw materials are the same as in Example 1. When the heating temperature is 750℃, the heating time is less than 30min, the fluidized roasting temperature is 650℃, CO+H 2 The concentration is 30%~50v / v%, the residence time is 30min, and the roasted product obtained under this condition is protected and cooled by reducing gas. After a magnetic field strength of 80kA / m, dry weak magnetic separation and weak magnetic tailings are carried out after 320kA. / m dry strong magnetic separation. Obtained an iron concentrate yield of 35.13%, TiO 2 The content is 18.45%, the TFe content is 55.98%, the TFe recovery rate is 48.34%; the titanium concentrate yield is 58.14%, TiO 2 Content 46.30%, FeO content 33.00%, Fe 2 O 3 Content 8.69%, TiO 2 The recovery rate is 77.12%; the tailings yield is 6.73%, TiO 2 The content is 39.59%, and the TFe content is 29.22%. (See the process Figure 5 )

Example Embodiment

[0057] Example 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%. When the heating temperature is 600℃, the heating time is less than 30min, the fluidized roasting temperature is 550℃, the CO concentration is 70%~90v / v%, the residence time is 120min, and it is cooled by nitrogen protection. The calcined product obtained under the conditions is subjected to wet weak magnetic separation with a magnetic field strength of 240kA / m. Obtained an iron concentrate yield of 17.92%, TiO 2 The content is 19.48%, the TFe content is 54.67%, the TFe recovery rate is 25.85%; the titanium concentrate yield is 82.08%, TiO 2 The content is 48.35%, FeO content is 35.81%, Fe 2 O 3 Content 9.13%, TiO 2 The recovery rate was 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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