Process for producing nodular graphite cast iron and gray cast iron with cast iron filings in cupola furnace

Abstract

A process for producing nodular graphite iron casting and gray iron casting frame cast iron filings in cupola furnace includes mixing said cast iron filings, coagulant, antioxidizing agent, carbon increaser, flux and water together, stirring, shaping blocks, coagulating, drying and charging them into cupola furnace. Its advantage is very low cost.

Description

Technical field [0001] The invention relates to a process for producing ductile iron castings and gray iron castings by smelting cast iron scraps in a cupola, and belongs to the casting field. Background technique [0002] Background There are two main types of technology: (1) The process of using the cupola to produce ductile iron castings and gray iron castings is the process of putting the cast iron into the cupola; (2) The original recycling technology of cast iron scraps is through the recycling department The cast iron scraps are recycled to the ironmaking production unit for remelting treatment in the ironmaking furnace and smelted into cast iron blocks. From the above two existing technologies, cast iron scraps cannot directly enter the cupola to produce iron castings, but can only enter the cupola to produce cast irons after the cast iron scraps are smelted into cast iron blocks in the ironmaking furnace. Summary of the invention [0003] The technical problem to be sol...

AI Technical Summary

Problems solved by technology

Judging from the above two existing technologies, cast iron shavings cannot directly enter the cupola to produce iron castings, but can only be smelted into cast iron blocks in the ironmaking furnace before entering the cupola to produce iron castings