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Refining flux used for purifying and processing aluminum or aluminum alloy melt, and its preparation method

A technology for aluminum alloy melt and purification treatment, which is applied in the field of refining flux for aluminum or aluminum alloy melt purification treatment, can solve the problems of increased silicon content, blocked pores, adverse effects, etc., and achieves the promotion of decomposition and reaction. ability, the effect of efficient dry slag making ability

Inactive Publication Date: 2011-10-26
SOUTH CHINA UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But aluminum melt is the same as K 2 TiF 6 、KBF 4 The reaction must generate viscous K 3 AlF 6 and liquid KAlF 4 , the viscosity of the former has a tendency to block holes; 5-10% SiO 2 The main function of slagging is to react with aluminum melt to form silicon and alumina, and the reaction product Si will be dissolved in aluminum melt, resulting in an increase in silicon content in aluminum and aluminum alloys, which may have adverse effects

Method used

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  • Refining flux used for purifying and processing aluminum or aluminum alloy melt, and its preparation method
  • Refining flux used for purifying and processing aluminum or aluminum alloy melt, and its preparation method
  • Refining flux used for purifying and processing aluminum or aluminum alloy melt, and its preparation method

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Embodiment A-H

[0033] Table 1 shows the composition of refining flux formulations for the purification treatment of aluminum or aluminum alloy melts in Examples A-H and the refining flux formulations in Comparative Examples I-M. When preparing the refining flux for the purification of aluminum or aluminum alloy melts, the NaCl, KCl, Na 3 AlF 3 、K 3 AlF 3 、Na 2 CO 3 , CaCO 3 、Na 2 SO 4 、K 2 SO 4 、LaF 3 、LaCl 3 , CeF 3 Wait for the raw materials to dry, then according to the composition of the raw material formulas of different examples in Table 1, weigh the proportioning according to the proportion, put the raw materials after the proportioning in the examples into the mixer, and mix for 30-50 minutes under normal temperature conditions, the product It is a white powdery mixture. Put the white powder mixture product into a baking oven and bake it at 200-250°C for 2-3 hours before using it.

[0034] Flux M is a commercially available 2# scouring agent for aluminum alloys produced...

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Abstract

The invention discloses a refining flux used for purifying and processing aluminum or aluminum alloy melt, and its preparation method. The invention is characterized in that the raw material formula of the refining flux is a powder mixture composed of the following components by mass: 25 to 35% of NaCl, 25 to 35% of KCl, 15 to 25% of Na3AlF6 and / or K3AlF6, 4 to 10% of Na2SO4 and / or K2SO4, 3 to 10% of CaCO3 and / or Na2CO3, 3 to 6% of REF3 and / or RECl3; wherein, a mass ratio of NaCl to KCl is 1:1; RE is Ce or La. The refining flux can be fully diffused after entering the melt without adsorption agglomeration and pore plugging; and has high efficient capability for producing dry slag without viscous aluminum melt; even the refining flux has a slight reaction with aluminum melt, the reaction products can be removed with slag; the refining flux provided in the invention has high efficiency of gas and slag removing.

Description

technical field [0001] The present invention relates to the purification treatment of aluminum or aluminum alloy melts, in particular to the refining flux used for the purification treatment of aluminum or aluminum alloy melts; . Background technique [0002] The quality of aluminum or aluminum alloy castings is determined by the degree of purification of the melt. The goal of melt purification is to remove the gas and non-metallic inclusions in the melt as much as possible, thereby reducing various metallurgical defects such as porosity, pores, and inclusions in the casting, improving the mechanical properties of the casting, or creating condition. The traditional melt purification process completely separates the degassing process from the slag removal process, and the purification capacity of this method is limited. Combining various melt purification technologies can greatly improve the purification ability of aluminum alloy melts. [0003] Chinese invention patent "...

Claims

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Application Information

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IPC IPC(8): C22B9/10C22B21/06C22C1/06C22C21/00
Inventor 彭继华唐小龙何健亭李绍康范卫忠陈学文许德英
Owner SOUTH CHINA UNIV OF TECH
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