High-performance fire-resistant abrasion-proof composite material

Abstract

The present invention discloses a high-performance flame-proof abrasion-resisting composite material which is prepared mainly by the components of particle material alumina or/and corundum or/and mullite 50-70 parts; hard particle 5-25 parts; binding agent 8-25 parts; aluminum oxide micro powder or/and silicon micronized quartz powder 8-15 parts and surfactant 0.1 parts. The composite material is developed according to the scientific knowledge obtained in the long-term researching and producing for the flame-proof abrasion-resisting composite material in our company and absorbing the latest accomplishment of the present material science, the material has the advantages of increasing the high-temperature bonding strength and toughness of the composite material, increasing the binding ability of the interface between the composite material and the equipment, facilitating the two sides forming a compact and high-strength whole body, optimizing the capability of the composite material in the high-temperature state, prolonging the service lifetime of the equipment, reducing the number of the breakdown maintenance, reducing the material consumption and the labor intensity of the worker thereby obtaining the purpose of increasing the economic benefit of the enterprise.

Description

technical field [0001] The invention relates to a special composite material for equipment in the iron and steel smelting industry, in particular to a high-performance refractory and wear-resistant composite material with long service life. Background technique [0002] With the rapid development of China's economy, the iron and steel industry has obtained good development opportunities and is showing a rapid development momentum. China's iron and steel output has reached 400 million tons, ranking first in the world. Pillar industry. However, during the smelting process of iron and steel, many equipment parts wear very seriously, such as (1) blast furnace slag discharge ditch (water slag ditch), cement concrete, cast stone, and cast steel are generally used as raw materials for slag discharge ditch in small and medium iron and steel enterprises, because of these The hardness of the material is low, it is difficult to meet the use requirements of large slag discharge, and th...

AI Technical Summary

Problems solved by technology

However, during the smelting process of iron and steel, many equipment parts wear very seriously, such as (1) blast furnace slag discharge ditch (water slag ditch), cement concrete, cast stone, and cast steel are generally used as raw materials for slag discharge ditch in small and medium iron and steel enterprises, because of these The hardness of the material is low, it is difficult to meet the use requirements of large slag discharge, and the wear is very serious. If a large piece of sticky slag appears, the local temperature of the concrete will rise rapidly, and explosion will occur, which will greatly reduce the service life; large and medium-sized steel Enterprises generally use high manganese steel plate as the substrate of slag discharge ditch, which has better wear resistance, but its hardness is too low to cope with the impact of high hardness and large displacement blast furnace water-quenched slag, and when slag sticks, high temperature It will greatly reduce the hardness of the high manganese steel plate, reduce its wear resistance, and the cavitation resistance of the high manganese steel plate is poor, and pitting will occur, which increases the friction resistance during use, accelerates its wear, and affects the high manganese steel plate. (2) The upper and lower troughs of the single-roll diversion of the sintering machine use alloy steel with a service life of only about 30 days at 800-1100°C, which is difficult to meet the requirements of normal production; in addition, there are blast furnace cyclone dust removal The traditional refractory bulk materials or refractory shaped materials are used for the pipes of the hot blast stove, the air supply branch pipes of the hot blast stove, and the circulation pipes of the steelmaking and refining equipment. Due to the addition of cement and other cementing materials, the Al 2 o 3 , SiO 2 , Fe 2 o 3 Such reactions produce low-melting materials, high-temperature wear resistance and impact resistance decrease, and the service life cannot meet the requirements of normal production and use. The shaped refractory materials have high impurities in their own materials, and lime, fluorite, Dolomite, etc. generate a large amount of glass phase at high temperature, which reduces the hardness, aggravates wear, and causes erosion and block loss, which limits the service life and hinders the normal operation of the equipment