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Low-iron low-silicon aluminum liquid and preparation method and application thereof

A low-silicon aluminum and aluminum solution technology, which is applied in the field of metal materials, can solve the problems of reducing alloy performance and complex process, and achieves low cost, simple operation process and good effect

Inactive Publication Date: 2021-07-13
GUANGDONG HONGBANG ALUMINUM METAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of these methods is greatly affected by factors such as the critical iron content, the amount of alloying elements added, the processing temperature, and the standing time. The process is complicated. In addition, the alloying elements themselves are also a kind of impurity. performance
Therefore, the existing iron removal method can no longer meet the requirements of industrial development, and an effective iron removal method is urgently needed to make up for this defect and fundamentally solve the problems caused by impurity iron in aluminum alloys

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Prepare aluminum solution

[0030] A. Put the aluminum material into the crucible to heat and melt it and raise the temperature to 720°C to obtain the melt;

[0031] B. Add slagging agent to the melt and stir evenly;

[0032] C. Remove scum;

[0033] D Use a mixer to stir the melt while continuously feeding inert gas into the melt, and add 0.1% refining agent to the melt;

[0034] E. Stop stirring after the stirring time of the mixer reaches the first preset time, and remove the scum;

[0035] F. After heating the melt to 730±10°C, let it stand still according to the second preset time to obtain the final aluminum melt;

[0036] 2) Preparation of polynuclear polymeric hydroxyl

[0037] Dissolve the aluminum salt in water, stir to form a solution, slowly add sodium hydroxide solid particles until the pH is adjusted to 4.5, let it stand for 4 hours, pour out the supernatant, put the turbid solution in an oven to dry for 9 hours, and grind;

[0038] 3) Multi-nuclea...

Embodiment 2

[0042] 1) Prepare aluminum solution

[0043] A. Put the aluminum material into the crucible to heat and melt it and raise the temperature to 725°C to obtain the melt;

[0044] B. Add slagging agent to the melt and stir evenly;

[0045] C. Remove scum;

[0046] D using a stirrer to stir the melt while continuously feeding inert gas into the melt, and adding 0.13% refining agent by mass percentage to the melt;

[0047] E. Stop stirring after the stirring time of the mixer reaches the first preset time, and remove the scum;

[0048] F. After heating the melt to 730±10°C, let it stand still according to the second preset time to obtain the final aluminum melt;

[0049] 2) Preparation of polynuclear polymeric hydroxyl

[0050] Dissolve the aluminum salt in water, stir to form a solution, slowly add sodium hydroxide solid particles until the pH is adjusted to 5, let it stand for 5 hours, pour out the supernatant, put the turbid solution in an oven to dry for 9 hours, and grind; ...

Embodiment 3

[0055] 1) Prepare aluminum solution

[0056] A. Put the aluminum material into the crucible to heat and melt it and raise the temperature to 730°C to obtain the melt;

[0057] B. Add slagging agent to the melt and stir evenly;

[0058] C. Remove scum;

[0059] D using a stirrer to stir the melt while continuously feeding inert gas into the melt, and adding 0.15% refining agent to the melt;

[0060] E. Stop stirring after the stirring time of the mixer reaches the first preset time, and remove the scum;

[0061] F. After heating the melt to 730±10°C, let it stand still according to the second preset time to obtain the final aluminum melt;

[0062] 2) Preparation of polynuclear polymeric hydroxyl

[0063] Dissolve the aluminum salt in water, stir to form a solution, slowly add sodium hydroxide solid particles until the pH is adjusted to 6, let it stand for 56 hours, pour out the supernatant, put the turbid solution in an oven to dry for 910 hours, and grind;

[0064] 3) Multi...

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Abstract

The invention discloses low-iron low-silicon aluminum liquid and a preparation method and application thereof, and relates to a method for removing impurities in the technical field of metal materials. The method comprises the following steps that turbid liquid is placed in a drying oven to be dried for 9h, grinding is carried out, clarified causticized section aluminum liquid is poured into a beaker, heating is carried out to 92-100 DEG C, then multi-core polymerized hydroxyl aluminum obtained by multi-core polymerized hydroxyl is weighed according to the mass-volume concentration of the multi-core polymerized hydroxyl aluminum and the aluminum liquid being 2-13g / L and added into the aluminum liquid, stirring reaction is carried out for 4-9 min, filtering is carried out, a refining agent and borax are ground, 0.1-0.2% of refining agent and 0.3-0.9% of borax are weighed according to the mass percent of to-be-treated aluminum alloy, the refining agent and the borax are wrapped with aluminum foil paper and placed in the drying oven, the temperature is raised to 210-240 DEG C, heat preservation is carried out for 4-5h, the refining agent is pressed into the aluminum liquid through a bell jar, heat preservation is carried out for 6-12min, then slagging-off is carried out, the borax is pressed into the aluminum liquid, and slagging-off is carried out after reaction is completed; and heat preservation and standing are carried out for 40-80 min, iron elements in a melt are captured to be gathered and precipitated, the iron removal effect is good, and the efficiency is high.

Description

technical field [0001] The invention relates to a method for removing impurities in the technical field of metal materials, in particular to a low-iron and low-silicon aluminum liquid and its preparation method and application. Background technique [0002] In recent years, with the continuous increase of the amount of aluminum alloy, the requirements for its performance are also getting higher and higher. Usually people use heat treatment, alloying and other methods to improve the performance of aluminum materials, but these methods can improve the performance of aluminum materials to a limited extent. , It becomes a big problem to remove the influence of harmful impurities. Among them, the impurity element iron in aluminum alloy is well known to be harmful to cast aluminum alloy or deformed aluminum alloy. The iron element in aluminum alloy mainly comes from the industrial process of aluminum smelting and iron tools in the process of industrial smelting and casting. In a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C21/00C22C1/02
CPCC22C1/026C22C1/06C22C21/00
Inventor 杨镇江黄建良闫俊
Owner GUANGDONG HONGBANG ALUMINUM METAL IND CO LTD
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