Preparation method of environment-friendly high-temperature initiated resin for blast furnaces

Abstract

The invention discloses a preparation method of an environment-friendly high-temperature initiated resin for blast furnaces, which comprises the following steps: adding polyformaldehyde and diphenyl methane diamine to react, adding phenol, heating to carry out condensation, dehydrating under reduced pressure, and adding an ester solvent; and when the viscosity is adjusted to 500-1000 mPa.s / 25 DEGC, adding inorganic micropowder to obtain the environment-friendly high-temperature initiated resin for blast furnaces. The preparation technique disclosed by the invention is simple. When the environment-friendly high-temperature initiated resin is used for preparing a stemming material, the binder consumption is obviously lowered, the utilization coefficient of a blast furnace is effectively enhanced, the tap hole mixture consumption per ton of iron is lowered, and no polluting fume is generated. The stemming prepared from the resin has the characteristics of appropriate setting rate, high quality stability, high strength and excellent slag erosion resistance.

Description

technical field [0001] The invention relates to a preparation method of a binder for blast furnace iron hole clay, in particular to a preparation method of an environment-friendly high-temperature initiation resin for a blast furnace. Background technique [0002] Gun mud is an amorphous mixture specially used for the blast furnace taphole. It is made of coke powder, clay, silicon carbide, asphalt powder, etc. as the main raw materials. It plays an important "switch" role in the process. However, it faces serious environmental pollution problems: at present, coal tar, anthracene oil, and washing oil are mainly used as binders in China, but the tar material components are polycyclic aromatic hydrocarbons, anthracene, naphthalene, and nitrogen, oxygen, and sulfur compounds. Heterocycles, etc., and its main component, polycyclic aromatic hydrocarbons, benzopyrene, have been identified as strong carcinogens. Under heating conditions, this type of binder only volatilizes rather...

AI Technical Summary

Problems solved by technology

However, it faces serious environmental pollution problems: at present, coal tar, anthracene oil, and washing oil are mainly used as binders in China, but the tar material components are polycyclic aromatic hydrocarbons, anthracene, naphthalene, and nitrogen, oxygen, and sulfur compounds. Heterocycles, etc., whose main component, polycyclic aromatic hydrocarbons, benzopyrene, has been identified as a strong carcinogen

[0004] Chinese patent CN101244943A "Binder for large-scale blast furnace clay and blast furnace clay" adopts a certain proportion of tar, resin and asphalt as the binder of clay, which reduces the smell of clay to a certain extent, but still uses tar, no Fundamentally solve the environmental protection problem of gun clay

[0005] The environmental protection of gun clay is mainly reflected in the choice of binder. The basic starting point of the above methods is to start from the process, but not to solve the problem fundamentally.