Method for producing titanium iron alloy with titanic iron ore

A technology of titanium ferroalloy and ilmenite, which is applied in the field of titanium ferroalloy preparation, can solve the problems of high energy consumption and long production process, and achieve the effects of avoiding waste, low cost and wide application range

Inactive Publication Date: 2009-08-19
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] At present, titanium alloys are prepared from pure metals by high-temperature vacuum melting and powder metallurgy. The preparation process requires specific production equipment, long production process and high energy consumption.

Method used

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  • Method for producing titanium iron alloy with titanic iron ore

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Embodiment 1

[0024] Such as figure 1 Shown, the method for preparing titanium ferroalloy by ilmenite of the present invention, comprises the following steps:

[0025] Step 1. Preparation of ilmenite electrode: the ilmenite raw material whose main impurity elements are P, S, Mg, Al, Ca, O and Si after beneficiation is subjected to conventional crushing, uniform mixing, and cold isostatic pressing to form And after high-temperature sintering, the ilmenite electrode is made, and the powder particle size of the pulverized ilmenite raw material is below 50 μm.

[0026] When preparing the ilmenite electrode described in this step, the pulverized and uniformly mixed ilmenite raw material powder is pressed and formed by a press under a pressure of 100-200 MPa, and then the ilmenite raw material powder is pressed and formed by a high-temperature sintering furnace at 800° C. to 1000 ° C. The pressed ilmenite blank is subjected to high-temperature sintering at a temperature of °C to make an ilmenite...

Embodiment 2

[0033] In this embodiment, the difference from Embodiment 1 is that in step 1, when the pressed ilmenite billet is sintered in a high-temperature sintering furnace, the high-temperature sintering temperature is 900°C. When the molten salt electrolysis reaction is carried out in step 2, the electrolysis temperature is 950° C., the electrolysis voltage is 3.1 V, and the electrolysis time is 8 hours. In the ferro-titanium alloy obtained after vacuum smelting, the mass percentage of titanium is 35-45%, and the impurity contents are: 0<0.5%, V<2.0%, Si<2.5%, P<0.02%, Cu<0.2 %, C<0.50%, S<0.02%, Mn<2.5%, and the balance is Fe. Other process steps and process parameters of this embodiment are the same as those of Embodiment 1.

Embodiment 3

[0035]In this embodiment, the difference from Embodiment 1 is that in step 1, when the pressed ilmenite billet is sintered in a high-temperature sintering furnace, the high-temperature sintering temperature is 900°C. When carrying out the molten salt electrolysis reaction in step 2, the electrolysis temperature is 850°C, the electrolysis voltage is 3.3V, and the electrolysis time is 8 hours. In the ferro-titanium alloy obtained after vacuum smelting, the mass percentage of titanium is 35-45%, and the impurity contents are: 0<0.5%, V<2.0%, Si<2.5%, P<0.02%, Cu<0.2 %, C<0.20%, S<0.02%, Mn<2.5%, and the balance is Fe.

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Abstract

The invention discloses a method for preparing ferrotitanium with titanic iron ore, comprising the following steps: 1, preparing titanic iron ore electrode by crushing, evenly mixing, press-forming and high-temperature sintering the titanic iron ore raw material in the selected ore, of which the main impurity elements are P, S, Mg, Al, Ca, O and Si; 2, carrying out fused salt electrolysis by taking titanic iron ore electrode as the cathode, and graphite rod as the anode under the protection of argon to obtain the primary titanic iron ore product in which the main impurity elements are S, P and Si; and 3, vacuum melting the washed and dried primary titanic iron ore product in a vacuum furnace to remove the impurity elements of S, P and Si contained in the primary product so as to obtain the ferrotitanium. The method has simple preparing steps and convenient operation and low cost, can greatly reduce the energy consumption and environment pollution in metallurgy process and can effectively avoid waste of mineral resources.

Description

technical field [0001] The invention relates to the technical field of ferro-titanium alloy preparation, in particular to a method for preparing ferro-titanium alloy from ilmenite. Background technique [0002] my country's ilmenite deposits are widely distributed and rich in reserves. The Panzhihua-Xichang area is the main metallogenic belt of ilmenite in my country and one of the important production areas of similar deposits in the world. The chemical composition of the raw ore is shown in Table 1: [0003] Table 1 Chemical composition of ilmenite concentrate in Panzhihua, Sichuan [0004] Chemical Element ΣFe TiO 2 V 2 o 5 CaO MgO SiO 2 al 2 o 3 MnO S P percentage content (wt%) 31.75 47.74 0.10 1.16 4.60 2.64 1.20 0.75 0.64 0.013 [0005] At present, ilmenite concentrate has three m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/36B22F3/12C22B9/04C22C14/00C22C35/00C22C38/14C22C38/28C22C38/50
Inventor 杜继红奚正平李晴宇李争显杨升红王少鹏唐勇马秀芬
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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