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Method for recycling iron and titanium in vanadium titano-magnetite

A technology of vanadium titanomagnetite and recovery method, applied in chemical instruments and methods, magnetic separation, solid separation and other directions, can solve the problems of inability to recover titanium concentrate, low recovery efficiency of titanium concentrate, etc., and achieves low cost and operation. Simple, avoid over-grinding effect

Inactive Publication Date: 2014-07-30
CHANGSHA RES INST OF MINING & METALLURGY
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Problems solved by technology

[0003] There are multiple methods for reclaiming vanadium-titanium magnetite at present, such as the Chinese patent with the publication number CN101791588A disclosing a kind of ore dressing method for low-grade vanadium-titanium magnetite. Magnetic field strength and belt speed during magnetic separation, successively through twice grinding magnetic separation obtains iron ore concentrate; Publication number is that the Chinese patent of CN102225358A discloses a kind of beneficiation method of vanadium-titanium magnetite, vanadium-titanium magnetite fine Grinding and screening, finely grinding to a particle size of ≤3mm, and then magnetic separation at a field strength of 3000e to 50000e to obtain coarse concentrate and tailings; grinding the above coarse concentrate to >80 mesh, using magnetic separation at a field strength of 1000e to 15000e Then use a magnetic separator with a field strength of 800e to 10000e for magnetic separation to obtain iron concentrate and tailings; these two beneficiation methods can only recover iron concentrate from vanadium-titanium magnetite, and cannot Recycled Titanium Concentrate
[0004] The Chinese patent with the application number 200910302361.0 discloses a method for beneficiation of vanadium-titanium magnetite, which uses a three-stage grinding and beneficiation process for magnetic separation. The field strength of the first stage of magnetic separation is 3000Gs ~ 4000Gs, and the field strength of the second stage of magnetic separation is 1800Gs~2200Gs, the field strength of the three-stage magnetic separation is 1300Gs~1700Gs; the tailings of the above-mentioned first, second, and third-stage magnetic separation are concentrated and then enter the rotary chute to obtain titanium middlings and spiral tailings, and the titanium middlings are dried Titanium concentrate and dry-selected titanium tailings can be obtained through selection; although this method of beneficiation can simultaneously recover iron concentrate and titanium concentrate in vanadium-titanium magnetite, the recovery efficiency of titanium concentrate is low

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  • Method for recycling iron and titanium in vanadium titano-magnetite

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Embodiment 1

[0065] according to figure 1 The shown flow process recovers iron and titanium in vanadium-titanium magnetite, figure 1 The flow chart of the method for reclaiming iron and titanium in the vanadium-titanium magnetite provided by the embodiment of the present invention, the concrete process is:

[0066] The mass content of 10000 tons of Fe is 28%, TiO 2 The vanadium-titanium magnetite ore with a mass content of 11% is crushed in three stages of closed circuit to obtain mineral powder with a particle size of ≤15mm; the mineral powder with a particle size of ≤15mm is subjected to a stage of ball milling, and the mineral powder obtained from the stage of ball milling is sieved The vibrating screen 200 mesh under the sieve is subjected to a stage of weak magnetic separation with a magnetic field strength of 0.2T to obtain coarse iron ore and tailings of a stage of weak magnetic separation; the coarse iron ore is Two-stage ball milling, the ore powder obtained by the two-stage bal...

Embodiment 2

[0071] according to figure 1 The shown flow process recovers iron and titanium in vanadium-titanium magnetite, figure 1 The flow chart of the method for reclaiming iron and titanium in the vanadium-titanium magnetite provided by the embodiment of the present invention, the concrete process is:

[0072] The mass content of 10000 tons of Fe is 25%, TiO 2 The vanadium-titanium magnetite ore with a mass content of 9.5% is crushed in three stages of closed circuit to obtain ore powder with a particle size of ≤15mm; the ore powder with a particle size of ≤15mm is subjected to one-stage ball milling, and the ore powder obtained by the one-stage ball milling is sieved The vibrating screen 200 mesh under the sieve is subjected to a stage of weak magnetic separation with a magnetic field strength of 0.25T to obtain iron coarse ore and a stage of weak magnetic separation tailings; the iron coarse ore is Two-stage ball milling, the ore powder obtained by the two-stage ball milling is cl...

Embodiment 3

[0077] according to figure 1 The shown flow process recovers iron and titanium in vanadium-titanium magnetite, figure 1 The flow chart of the method for reclaiming iron and titanium in the vanadium-titanium magnetite provided by the embodiment of the present invention, the concrete process is:

[0078] The mass content of 10000 tons of Fe is 20%, TiO 2 The vanadium-titanium magnetite ore with a mass content of 9.0% is crushed in three stages of closed circuit to obtain ore powder with a particle size of ≤15mm; the ore powder with a particle size of ≤15mm is subjected to one-stage ball milling, and the ore powder obtained by the one-stage ball milling is sieved The vibrating screen 200 mesh under the sieve is subjected to a stage of weak magnetic separation with a magnetic field strength of 0.3T to obtain coarse iron ore and tailings of a stage of weak magnetic separation; the coarse iron ore is Two-stage ball milling, the ore powder obtained by the two-stage ball milling is ...

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Abstract

The invention provides a method for recycling iron and titanium in vanadium titano-magnetite. The method comprises the following steps: performing primary ore grinding and primary magnetic separation on vanadium titano-magnetite ore to obtain crude iron ore and primary magnetic separation tailing ore; performing secondary ore grinding and secondary magnetic separation on the crude iron ore to obtain concentrate iron ore and secondary magnetic separation tailing ore; performing third magnetic separation or reselection on the primary magnetic separation tailing ore with a particle size being 0.1mm-0.4mm to obtain crude titanium ore; performing electric separation on the crude titanium ore to obtain concentrate crude titanium ore; mixing the secondary magnetic separation tailing ore with the primary magnetic separation tailing ore with a particle size being less than 0.1mm, then performing crude and fine separation, and performing fourth magnetic separation on a mixture with a particle size being greater than 0.038mm to obtain concentrate fine titanium ore; and performing fifth magnetic separation on a mixture with a particle size being less than or equal to 0.038mm to obtain concentrate superfine titanium ore. By adopting order grinding, order separation and separation of crude and fine particles, the recycling method is capable of efficiently recycling the concentrate iron ore and the concentrate titanium ore in the vanadium titano-magnetite.

Description

technical field [0001] The invention relates to the technical field of ferrous metal beneficiation, in particular to a method for recovering iron and titanium in vanadium-titanium magnetite. Background technique [0002] The rock masses containing vanadium-titanium magnetite are divided into two categories: basic rock (gabbro) type rock mass and basic-ultrabasic rock (gabbro-pyroxene-pyroxene) type rock mass. There are deposits in Panzhihua, Baima and Taihe, and the latter has deposits in Hongge and Xinjie. Vanadium-titanium magnetite is not only an important source of iron, but also associated with various components such as vanadium, titanium, chromium, cobalt, nickel, platinum and scandium, which has high comprehensive utilization value. [0003] There are multiple methods for reclaiming vanadium-titanium magnetite at present, such as the Chinese patent with the publication number CN101791588A disclosing a kind of ore dressing method for low-grade vanadium-titanium magne...

Claims

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Application Information

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IPC IPC(8): B03C1/00B03C7/00
Inventor 曾维龙曾尚林李跃辉安凳气
Owner CHANGSHA RES INST OF MINING & METALLURGY
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