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A method for direct electrolysis of titanium-containing electric furnace slag to produce low-titanium aluminum alloy

A technology for titanium electric furnace slag and titanium aluminum alloy, which is applied in the field of producing low titanium aluminum alloy, can solve the problems of reduced rutile titanium resources, high cost, high energy consumption in aluminum alloy industrial production, etc. simple effect

Inactive Publication Date: 2017-04-26
GUIZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Provide a method for direct electrolysis of titanium-containing electric furnace slag to produce low-titanium aluminum alloys, so as to solve the technical problems in the prior art that rutile titanium resources are decreasing day by day, and the industrial production of aluminum alloys has high energy consumption and high cost

Method used

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  • A method for direct electrolysis of titanium-containing electric furnace slag to produce low-titanium aluminum alloy
  • A method for direct electrolysis of titanium-containing electric furnace slag to produce low-titanium aluminum alloy

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Embodiment 1

[0015] The invention is carried out in a small molten salt electrolysis test cell. The electrolytic test cell is composed of a corundum crucible (3) and a graphite crucible (4). In the upper part, the graphite guide rod (1) is connected to the carbon anode (2) to form the anode part, and the current electrolyte (6) for aluminum electrolysis production is added to the tank, and the cathode guide rod (7) is connected to the graphite crucible (4).

[0016] The titanium-containing electric furnace slag is directly added to the small molten salt electrolysis test cell, and its composition is: TiO 2 : 50.62%, Al 2 o 3 : 19.01%, MgO: 12.35%, CaO: 4.52%, SiO 2 : 8.3%, V 2 o 5 : 0.21%, TFe: 1.52%, others: 3.47%. The technical conditions of the electrolysis process are as follows: electrolysis temperature 950°C-960°C, pole distance 38-42cm, aluminum liquid level 18-22cm, electrolyte molecular ratio 2.3-2.45, electrolysis current density 0.78-0.8A / cm 2 , the electrolysis time is 1...

Embodiment 2

[0018] The titanium-containing electric furnace slag is directly added to the small molten salt electrolysis test cell, and its composition is: TiO 2 : 50.62%, Al 2 o 3 : 19.01%, MgO: 12.35%, CaO: 4.52%, SiO 2 : 8.3%, V 2 o 5 : 0.21%, TFe: 1.52%, others: 3.47%. The technical conditions of the electrolysis process are as follows: electrolysis temperature 950°C-960°C, pole distance 38-42cm, aluminum liquid level 18-22cm, electrolyte molecular ratio 2.3-2.45, electrolysis current density 0.78-0.8A / cm 2 , the electrolysis time is 18h, and the electrolyte quality is 720g. Add 7.2g of high-titanium electric furnace slag to the small-scale electrolytic test cell. Under the action of direct current, the cathode begins to precipitate metal aluminum and metal titanium, and finally forms a low-titanium alloy with a titanium content of 0.93%. content of aluminum alloy.

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Abstract

The invention discloses a method for utilizing titaniferous electric furance slag for direct electrolysis to produce low-titanium-aluminum alloy. The titaniferous electric furance slag serves as a raw material to be directly added in a small test electrolytic bath, the adding amount of the titaniferous electric furance slag is smaller than the weight of the electrolyte by 2 percent, the current aluminum electrolysis electrolyte is adopted as the electrolyte, the electrolyte molecular ratio is 2.3-2.45, the electrolysis temperature ranges from 950 DEG C to 960 DEG C, the polar distance is 38-42 cm, the molten aluminum level is 18-22 cm, the electrolytic current density is 0.78-0.8 A / cm<2>, and the electrolysis time is 17-19 hours. Compared with the prior art, the root position electrolysis of the titanium element is achieved, the utilization process of the titanium slag is shortened, the sufficient utilization of the titanium resource and the aluminum resource is achieved, the method is not limited by a groove type, the improvement on an existing technology is small, the process is simple, cost is low, and energy consumption is small.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of metallurgical slag and aluminum electrolysis, and in particular relates to a method for directly electrolytically producing low-titanium aluminum alloy by using titanium-containing electric furnace slag. Background technique [0002] Titanium is a strategic resource. In the future, the realization of a series of "powerful projects" including "space strategy" and "marine strategy" will require strong support from my country's titanium material industry. my country is rich in vanadium-titanium magnetite resources, and about 90% of the titanium element exists in the form of vanadium-titanium magnetite in the Panzhihua-Xichang area in southwest China. Since vanadium-titanium magnetite is a polymetallic paragenetic ore, the utilization rate of titanium resources is only about 12% in the prior art. At present, China mainly uses two methods to process vanadium-titanium magnetite: on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C3/36
Inventor 张念炳刘卫黎志英杨波周军姚帧
Owner GUIZHOU NORMAL UNIVERSITY
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