Method for centrifugally removing harmful elements and impurities in iron-containing mixture

Abstract

The invention relates to a method for centrifugally removing harmful elements and impurities in an iron-containing mixture. The method comprises the following steps that (1), the molten mixture at thetemperature of exceeding 650 DEG C is put into a centrifugal rotating device; (2), the centrifugal rotating device completely contains the molten mixture, and intermetallic compound crystals are precipitated and grow up; (3), centrifugal separation treatment is carried out on the molten mixture manufacturing supergravity field in the device; and (4), various products are stripped by using a manual or mechanical method, and subsequent remelting and ingot casting or refining are carried out. According to the method, substances such as solid-phase compounds are precipitated when the mixture is subjected to liquid phase cooling, the mixture and the impurities are separated by means of the supergravity effect generated by centrifugal rotating motion by utilizing the difference between the density of the intermetallic compounds and the like and the density of the liquid-phase metal, and then a plurality of products are obtained through the method of settling, floating, peeling and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and relates to the impurity removal and purification of mixed metals, in particular to a method for centrifugally removing harmful elements and impurities in iron-containing mixtures. Background technique [0002] In industry, the separation and purification of mixtures containing iron and other harmful elements and impurities are usually treated with refining agents containing manganese and other elements. The iron remover used in this method is high in cost and limited in effect. Although the currently widely used metallurgical technology of aluminum-silicon and other alloys by electrothermal method (fire method) has certain overall advantages, impurities such as iron, titanium, calcium, and carbon are inevitably brought into the electrothermal smelting process, which greatly affects the downstream of aluminum and silicon. The performance of high-value products restricts the application marke...

AI Technical Summary

Problems solved by technology

However, most of the current conventional methods can only process one impurity element at a time, and have low efficiency, high cost, or strict requirements on raw material purity or impurity content.

[0003] Through the applicant's careful search, there is no technical literature that uses the centrifugation method of this patent application to remove harmful elements and impurities in the metal mixture

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