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
CN102226239AInactive Publication Date: 2011-10-26SOUTH CHINA UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2011-10-26
Estimated Expiration
Not applicable · inactive patent

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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.
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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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