In this paper, the refining process of aluminum and its alloys are described in detail, including flux, flotation and filtration, as well as modern technology such as sedimentation and distillation technologies, electrolysis and segregation methods. However, there are several issues that need to be carefully considered for revision or correction. There are as follows:
1. In section 2.1.1, please supplement the literature research on vacuum distillation technology for refining aluminum and its alloys as support.
2. In section 2.3.2, the description of Formula 2 mentioned is repeated, please correct it.
3. In section 4, please correct the grammatical errors in the first sentence. Be sure to check the full text for grammatical errors.
4. Please reorganize your language to summarize the problems in refining aluminum in section 4 in more concise terms.

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