Spheroidizing treater and process

Abstract

A spheroidizing treater for producing spheroidal graphite cast iron is carried out by adjusting bearing rod head and dam seam and controlling iron-water and nodulizer contact. It adopts waste-heat one-step method and controls spheroidizing reactive time and strength; the spheroidizing agent consists of Mg<=20%, RE<=3% and Si<=65%. It's simple, cheap and can be used for large-scale continuous production.

Description

technical field The invention relates to a spheroidizing treatment device and a spheroidizing treatment process for producing nodular cast iron, more specifically a production process for spheroidizing treatment by using a rare earth magnesium ferrosilicon nodulizing agent to rush into a bag. Background technique In the production of ductile iron castings, the production process of spheroidizing by flushing into the ladle is generally adopted. During the spheroidizing process of flushing into the bag, rare earth magnesium-silicon-iron alloy is widely used as the spheroidizing agent. The spheroidizing treatment by flushing into the ladle is easy to operate, and the molten iron does not need to be poured after the spheroidizing treatment to reduce the temperature. For a long time, counterparts at home and abroad have made unremitting efforts to study the technology of spheroidizing treatment by flushing into the bag and the production process of ...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problem of violent reaction and low absorption rate of effective elements when entering into the bag for spheroidization treatment, stabilize and improve product quality, reduce production cost and achieve energy recycling

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