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Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet

A technology of metallized pellets and vanadium-titanium magnetite, applied in magnetic separation, chemical instruments and methods, solid separation, etc., can solve the problems of lack of research on low-grade chromium-containing vanadium-titanium magnetite, etc., and meet the requirements of production On-site requirements, simple operation, beneficial to the effect of iron recovery

Active Publication Date: 2016-08-31
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on ordinary vanadium-titanium magnetite is relatively mature, but the research on chromium-containing vanadium-titanium magnetite still needs to be further systematic, and the research on chromium-containing vanadium-titanium magnetite mainly focuses on high-grade vanadium-titanium magnetite. chromium-type vanadium-titanium magnetite, while the research on low-grade chromium-containing vanadium-titanium magnetite is still relatively scarce, and the related research work needs to be further developed.

Method used

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  • Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet
  • Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet
  • Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet

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Effect test

Embodiment 1

[0055] A method for magnetic separation of low-grade chromium-containing type vanadium-titanium magnetite metallized pellets is carried out according to the following steps:

[0056] Step 1, mixing ingredients:

[0057] Weigh low-grade chromium-containing vanadium-titanium magnetite powder, reduced coal powder, and bentonite and put them into a ball mill for mixing. The mixing time is 4 hours to obtain a mixed material; wherein, the carbon in the reduced coal powder and the low-grade Oxygen of iron oxide in the chromium-containing type vanadium-titanium magnetite powder, by carbon-oxygen ratio (C / O)=1.2, namely by mass ratio, low-grade chromium-containing type vanadium-titanium magnetite powder: reduced coal powder=4.27, The bentonite content is 2% of the mass of the mixed material;

[0058] Step 2, making balls:

[0059] (1) Add water to the mixed material, mix, and stew the material for 40 minutes; wherein, according to the mass ratio, the amount of water added to the mixe...

Embodiment 2

[0070] A method for magnetic separation of low-grade chromium-containing type vanadium-titanium magnetite metallized pellets is carried out according to the following steps:

[0071] Step 1, mixing ingredients:

[0072] Weigh low-grade chromium-containing vanadium-titanium magnetite powder, reduced coal powder, and bentonite and put them into a ball mill for mixing. The mixing time is 5 hours to obtain a mixed material; wherein, the carbon in the reduced coal powder and the low-grade Oxygen of iron oxide in the chromium-containing type vanadium-titanium magnetite powder, by carbon-oxygen ratio (C / O)=1.1, namely by mass ratio, low-grade chromium-containing type vanadium-titanium magnetite powder: reducing coal powder=4.66, The bentonite content is 1.5% of the mass of the mixed material;

[0073] Step 2, making balls:

[0074] (1) Add water to the mixed material, mix, and stew the material for 30 minutes; wherein, according to the mass ratio, the amount of water added to the m...

Embodiment 3

[0085] A method for magnetic separation of low-grade chromium-containing type vanadium-titanium magnetite metallized pellets is carried out according to the following steps:

[0086] Step 1, mixing ingredients:

[0087] Weigh low-grade chromium-containing vanadium-titanium magnetite powder, reduced coal powder, bentonite and CaF 2 Put it into a ball mill, mix the materials, and the mixing time is 5h to obtain the mixed material; wherein, the carbon in the reduced coal powder and the oxygen of the iron oxide in the low-grade chromium-containing type vanadium-titanium magnetite powder are calculated according to the carbon-oxygen ratio (C / O)=1.2, that is, by mass ratio, low-grade chromium-containing type vanadium-titanium magnetite powder: reduced coal powder=4.27, bentonite content is 2% of the mixed material quality, CaF 2 The content is 8% of the total mixed material;

[0088] Step 2, making balls:

[0089] (1) Add water to the mixed material, mix, and stew the material fo...

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Abstract

The invention discloses a magnetic separation method for a low-grade chromium-containing vanadium titanium magnetite metalized pellet, belonging to the technical field of non-blast furnace smelting in comprehensive utilization methods of low-grade chromium-containing vanadium titanium magnetite powder. The method is carried out through the following steps of (1) mixing low-grade chromium-containing vanadium titanium magnetite powder, reduced pulverized coal, a binder and an additive by weighing; (2) preparing a pellet from the mixture, and drying; (3) carrying out coal-based pellet self-reduction high-temperature roasting on the dried pellet; (4) cooling the metalized pellet subjected to high-temperature roasting; and (5) smashing the cooled metalized pellet to obtain metalized pellet powder, and then, carrying out magnetic separation by using a magnetic separation tube to obtain an iron-enriched magnetic matter and titanium-enriched nonmagnetic matters. By using the method, the utilization ratios of strategic metal vanadium, titanium and chromium are maximized on the premise that the metallization ratio and iron recovery ratio for coal-based forced reduction of the low-grade chromium-containing vanadium titanium magnetite metalized pellet are increased.

Description

technical field [0001] The invention belongs to the non-blast furnace smelting technical field in the comprehensive utilization method of low-grade chromium-containing vanadium-titanium magnetite powder, and particularly relates to a method for magnetic separation and separation of metallized pellets of low-grade chromium-containing vanadium-titanium magnetite powder. Background technique [0002] Vanadium-titanium magnetite powder is a multi-metal co-associated ore rich in iron, vanadium, titanium and other valuable components, with extremely high application value. At present, the research on ordinary vanadium-titanium magnetite is relatively mature, but the research on chromium-containing vanadium-titanium magnetite still needs to be further systematic, and the research on chromium-containing vanadium-titanium magnetite mainly focuses on high-grade vanadium-titanium magnetite. Chromium-type vanadium-titanium magnetite, while the research on low-grade chromium-containing v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B1/243B03C1/02
CPCB03C1/02C22B1/02C22B1/243
Inventor 薛向欣程功金高子先姜涛杨合段培宁
Owner NORTHEASTERN UNIV
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