Calcium slag-sticking-prevention spray paint for converter mouth

Abstract

The invention belongs to the technical field of refractory materials, and particularly relates to a calcium slag-sticking-prevention spray paint for a converter mouth. The calcium slag-sticking-prevention spray paint is prepared from, by weight, 85-90% of calcium carbonate powder, 2-5% of zirconium metal powder, 2-5% of silicon carbide powder, 1-3% of a dispersing agent and 2-4% of a thickening agent by adding water to the materials, wherein the dispersing agent is one ore more of carbon black, petroleum coke powder and graphite, and the thickening agent is formed by mixing starch and xanthangum powder according to the weight ratio of (1-2):(1-2). The calcium slag-sticking-prevention spray paint is simple in formula, convenient to prepare and good in slag-sticking-prevention effect, the spray paint is sprayed once after steelmaking is conducted three times through a converter, the spray paint can insist after being continuously sprayed twice after steelmaking is conducted six to ten times through the converter, the individual spraying time is 1-3 minutes, it only takes workers 8-12 minutes to conduct slag striking, the slag striking time is saved, the steelmaking time is prolonged, and the spray paint has high economic benefits.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a calcareous anti-sticking slag spray coating for a converter mouth. Background technique [0002] During the use of converter steelmaking equipment in steel plants, serious slag sticking often occurs. The sticky slag at the converter mouth will increase and thicken, which will affect the size of the converter mouth. When the furnace mouth is reduced, the speed of pouring molten iron and adding scrap Lowering will also make the oxygen lance go down at the same time. Since the sticky slag is firmly bonded to the refractory material on the equipment, it is very difficult to remove the slag. On average, it takes 30-40 minutes to remove the slag once, which takes a long time to remove the slag and delays steelmaking. At present, various steelmaking plants have taken various measures to reduce sticky slag. Generally, the mouth of the converter is sprayed with...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings in the prior art when dealing with sticky slag at the converter mouth, the slagging time is long, the anti-sticky slag spray coating coagulates quickly, and the anti-slag effect is not good, the purpose of the present invention is to provide a calcium anti-slag for the converter mouth. Sticky residue spray coating

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