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Method for producing aluminum-Me intermediate alloy by one-step electrolysis method

A technology of master alloy and electrolytic method, which is applied in the field of production of aluminum master alloy, can solve problems such as difficulties, difficulty in reducing products, secondary pollution, etc., and achieve the effects of improving resource utilization, reducing production costs, and reducing emissions

Inactive Publication Date: 2008-11-05
熊超
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The first method has difficulty in producing master alloys with high melting point difference, high specific gravity difference and high content of components. The materials used at the same time are all pure metals, which must be remelted, causing secondary pollution and increasing energy consumption. ; The second method is difficult to obtain the reduction products of stable components, the environmental pollution is large, and the process control requirements for the thermite reduction process are high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: produce Al-10%Si alloy, the raw material ratio that adds in existing aluminum electrolyzer is:

[0013] Cheap metal oxides that can be reduced by aluminum A: bauxite (weight ratio content of ingredients: Al 2 o 3 80%, SiO 2 15%, Fe 2 o 3 5%);

[0014] Metal oxide B: SiO 2 (the weight ratio content of composition: SiO 2 95%, Fe 2 o 3 5%);

[0015] When opening the tank, the cheap metal oxide A that can be reduced by aluminum is 80% and the metal oxide B is 20% by weight; Metal oxide A 95%, metal oxide B 5% feed, stable production of Al-Si10%-Fe1% alloy, and the power consumption per ton of product is 16000 degrees / ton;

[0016] The present embodiment adopts self-baking anode experimental electrolyzer production, and electrolysis technical parameter is as follows:

[0017] Tank working voltage: 4.2V, electrolysis temperature: 950°C,

[0018] Pole distance: 4.0cm, Molecular ratio: 2.6,

[0019] Additives (weight ratio): calcium fluoride 3%, magne...

Embodiment 2

[0025] Embodiment 2: produce Al-10Mn-Fe alloy, the raw material ratio that adds in the electrolyzer is:

[0026] Cheap metal oxides that can be reduced by aluminum A: pyrolusite (weight ratio content of ingredients: MnO 2 75%, FeO 20%, SiO 2 5%);

[0027] Metal oxide B: electrolytic alumina;

[0028] When opening the tank, only cheap metal oxide A that can be reduced by aluminum is added. After the Mn reaches 10% in the pre-tank inspection, 10% of cheap metal oxide A that can be reduced by aluminum and 90% metal oxide B are fed in a weight ratio. Stable production of Al-Mn10%-Fe2% alloy; power consumption per ton of product is 15000 kWh / ton.

[0029] The present embodiment adopts self-baking anode experimental electrolyzer production, and electrolysis technical parameter is as follows:

[0030] Tank working voltage: 4.2V, electrolysis temperature: 980°C,

[0031] Pole distance: 4.0cm, Molecular ratio: 2.6,

[0032] Additives (weight ratio): calcium fluoride 3%, magnesium...

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Abstract

The invention discloses a method for producing an Al-Me master alloy through one-step electrolysis, which comprises following steps: by utilizing the conditions of existing aluminum electrolysis techniques, a cheap metallic oxide A that can be reduced by aluminum is taken as a raw material, and according to the ingredients of an aluminum master alloy to be prepared, a metallic oxide B that contains the corresponding ingredients is added into an existing aluminum electrolysis slot so as to produce the Al-Me master alloy. The method for producing the Al-Me master alloy through one-step electrolysis can remarkably lower the production cost of the Al-Me master alloy; and as the raw material with lower decontamination standard is used, the method can obtain greatly raised utilization rate of resources, reduce the dump leaching and discharging for raw material decontamination, and reduce the energy consumption of secondary remelting.

Description

technical field [0001] The invention relates to a method for producing an aluminum master alloy by adding metal oxides that can be reduced by aluminum in an aluminum electrolytic cell. Background technique [0002] Among the existing master alloys, Al-Si alloys, Al-Mn-Si alloys, Al-Mn alloys, Al-Zr alloys and Al-Ti alloys are widely used in aluminum processing, casting and steel industries. At present, the methods commonly used in the production of this type of alloy in the market are: a. Use aluminum ingots for remelting and other pure metals that make up the alloy components to directly stir, smelt and cast at the alloying temperature; b. Use aluminum ingots for remelting after melting Reduction of another component metal salt or metal oxide by the thermite method. [0003] The first method has difficulty in producing master alloys with high melting point difference, high specific gravity difference and high content of components. The materials used at the same time are a...

Claims

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Application Information

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IPC IPC(8): C25C3/36
Inventor 熊超刘志宏李启厚
Owner 熊超
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