Preparation method of iron runner castable containing graphene oxide

Abstract

The invention provides a preparation method of an iron runner castable containing graphene oxide, comprising the following steps: step 1: premixing materials, and mixing raw materials and auxiliary materials evenly, wherein the raw materials contain dense corundum, white corundum, carborundum, alpha-Al2O3 micropowder, silicon dioxide micropowder, aluminate cement, ball pitch and monatomic silicon powder, and the auxiliary materials comprise a water reducer and explosion-proof fiber; step 2, adding graphene oxide solution and an antioxidant for the graphene oxide. By applying the technical scheme, the preparation method has the following effects: (1) preparation steps are simplified, and are suitable for industrial production; (2) the added graphene oxide can reduce the usage amount of common carbonaceous materials such as the ball pitch, and the production of poisonous and carcinogenic gas can be reduced when the iron runner castable is used in a high temperature environment; (3) the content of carbon in the castable can be effectively increased by the addition of the graphene oxide, the additive quantity of water and the porosity of the iron runner castable can be reduced, and the structural strength, thermal shock resistance and corrosion resistance of the iron runner castable are enhanced.

Description

technical field [0001] The invention relates to the field of iron trench castables, in particular to a method for preparing iron trench castables containing graphene oxide. Background technique [0002] The blast furnace iron trough is a channel for guiding high-temperature molten iron and slag, and its refractory lining is subjected to high temperature, mechanical and chemical erosion of molten iron and slag. With the development of large-scale blast furnace smelting technology, the temperature of molten iron is higher, the amount of iron passing is increased, the time of iron passing is prolonged, the interval between tapping iron is shortened, and the oxidation of slag and iron is enhanced, which makes the high temperature molten iron and slag scouring and wearing the refractory Increase, which puts forward more stringent requirements on the erosion resistance, thermal shock resistance, burst resistance and erosion resistance of refractory materials. [0003] At present,...

AI Technical Summary

Problems solved by technology

Such as "a method for preparing granulated graphite for refractory castables" (CN102491760A) patent technology, which discloses the replacement of flake graphite with granulated graphite, the amount of water added to the castable is reduced, and the fluidity is improved to a certain extent, but The graphite introduced by this method is not easy to disperse evenly in the matrix, and the efficiency of granulation is very low, so it is not suitable for large-scale production; "A kind of iron trench castable containing modified graphite and its preparation method" (CN104402479A) patent technology, It is disclosed that the addition of Al with modified graphite 2 o 3 -SiC-C castables improve its flexural strength and slag resistance, but its density becomes smaller, and the strength of the sample decreases a lot after drying

Images