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Method for magnetic separation of low-grade chromium-containing vanadium-titanium magnetite metallized pellets

A technology of vanadium-titanium magnetite and metallized pellets, which is applied in the fields of magnetic separation, chemical instruments and methods, and solid separation, can solve the problems of lack of research on low-grade chromium-containing vanadium-titanium magnetite, and meet the needs of production On-site requirements, beneficial to separation, and the effect of reducing energy consumption

Active Publication Date: 2017-12-01
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method for magnetic separation of low-grade chromium-containing vanadium-titanium magnetite metallized pellets
  • Method for magnetic separation of low-grade chromium-containing vanadium-titanium magnetite metallized pellets
  • Method for magnetic separation of low-grade chromium-containing vanadium-titanium magnetite metallized pellets

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Experimental program
Comparison scheme
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

A method for magnetic separation of metallized pellets of low-grade chromium-containing vanadium-titanium magnetite belongs to the field of non-blast furnace smelting technology in the comprehensive utilization method of low-grade chromium-containing vanadium-titanium magnetite powder. The method is carried out according to the following steps: (1) Weigh low-grade chromium-containing vanadium titanium magnetite powder, reduced coal powder, binder and additives and mix them; (2) Make the mixed materials into pellets and bake them Dry; (3) perform self-reduction high-temperature roasting of coal-based pellets on the dried pellets; (4) cool the metallized pellets roasted at high temperature; (5) crush the cooled metallized pellets to obtain metallized pellets. The pellet powder is then magnetically separated using a magnetic separation tube to obtain iron-rich magnetic materials and titanium-rich non-magnetic materials. This method maximizes the utilization of strategic metals vanadium, titanium, and chromium on the premise of improving the metallization rate and iron recovery rate of coal-based enhanced reduction of low-grade chromium-containing vanadium-titanium magnetite pellets.

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 Patents(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 LIAONING
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