Alkaline granule steel ladle covering agent

Abstract

The composition of coverflux contains (wt) SiO2 10%-20%, Al2O3 1%-5%, CaO 50%-60%, MgO 5%-12%, Fe2O3 1%-3%, MnO 0.01%-0.1% and fixed carbon 0%-1%. Said coverflux possesses proper melting point and good heat-insulating property, can prevent secondary oxidation of molten steel, and can prolong ladle life.

Description

technical field

[0001] The invention relates to a ladle covering agent, in particular to an alkaline particle ladle covering agent. Background technique

[0002] At present, the general ladle covering agent generally adopts acidic covering agent, which contains high SiO 2 Although it has good thermal insulation performance, it is easy to cause secondary oxidation of molten steel, and Al in molten steel 2 o 3 The inclusion content increases, and the acidic covering agent slag will attack the basic ladle refractory. Contents of the invention

[0003] The object of the present invention is to provide a basic Al with low fixed carbon content, low reducible oxide content, initial Al 2 o 3 An alkaline granular ladle covering agent with low content and high alkalinity. The technical scheme of the present invention is to design a kind of alkaline particle ladle covering agent, it is characterized in that: the chemical composition of covering agent is by weight percentage: SiO...