Method for producing magnesium olivine iron pellet

Abstract

A process for preparing the forsterite-type iron ore ball includes such steps as proportionally mixing the powder of forsterite containing MgO (more than 43%) with bentone or wkd, grinding, spheroidizing, drying and calcining. It can increase the flowability of slog and the soft heat temp of burden, and decrease soft heat band, drop band, SiO2 activity and coke rate.

Description

technical field [0001] The invention relates to a production method of iron ore pellets, in particular to a production method of producing forsterite iron ore pellets by adding forsterite powder. Background technique [0002] With the continuous development of the iron and steel industry, the blast furnace urgently needs a reasonable charge structure, and an increase in the proportion of pellets is considered to be an ideal charge structure for the blast furnace. Therefore, in recent years, many qualified domestic enterprises have used their own iron ore concentrates to produce pellets. The production of pellets in my country has been rising all the way, but most of them only produce pure acid pellets, that is, the production of pellets is basically controlled at natural alkalinity, and no limestone, dolomite or olivine is added in the production process , and the iron grade is low, the metallurgical properties of the pellets are affected to a certain extent. [0003] There...

AI Technical Summary

Problems solved by technology

Most pelletizing plants use bentonite as a binder. Although it is an effective binder and can be used as a moisture control agent in the pelletizing process, it brings in alkali metals and other impurities, which are not good for reduction. Impact

Therefore, in order to seek new binders, a variety of high-efficiency organic binders have been studied, but there are still some unresolved problems in practical applications.

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