Firm can plastic and preparation method thereof

Abstract

The invention discloses firm can plastic and a preparation method thereof. The firm can plastic comprises the following components in percentage by mass: 80 to 90 percent of a mixture of silicon carbide and mullite, 2 to 12 percent of silicon-containing micropowder of which the particle size is less than 2,200 meshes and 8 to 18 percent of low-temperature agglutinant, wherein the silicon carbide accounts for 5 to 15 percent of the mixture and the mullite accounts for 85 to 95 percent of the mixture. The preparation method comprises the following specific steps of: sequentially mixing for the first time, bundling, mixing for the second time, extruding, blanking and packing by taking the mullite and silicon carbide as a matrix material, and phosphoric acid and aluminium phosphate as a bonding agent. The firm can plastic has the advantages of effectively prolonging the service life of a refractory material, effectively improving the reliability of the refractory material, reducing the consumption and blowing out times of the refractory material, being used under the working condition of a dry coke quenching furnace, increasing the economic benefit and saving resources, along with high wear resistance and high compressive strength and compactness at normal temperature. The preparation method has the advantages of capability of improving the quality of the product, simple process and easy operation.

Description

technical field [0001] The invention relates to a refractory material and a preparation method thereof, in particular to a refractory plastic and a preparation method thereof. Background technique [0002] During the production process of the CDQ coke oven, coke is in contact with the working surface of the refractory material from top to bottom, causing friction. For the working surface, this friction is long-standing mechanical wear. Wear and tear, rough and gradually peeling refractory particles appear on the working surface, and the surface structure is loose. In addition, the cold inert gas nitrogen mixed with carbon powder continuously impacts and scours the already loose working surface with the airflow. Under this working condition , The wear resistance of the refractory material has been subjected to an unprecedented test. As time goes by, the lining working surface is eroded a little bit. [0003] Since the mortar used for masonry joints during masonry has not und...

AI Technical Summary

Problems solved by technology

[0003] Due to the mortar joint masonry during masonry, it has not undergone the firing process like carbon bricks, and its strength and compactness are poorer than bricks. Moreover, the volume of the mortar joints shrinks after drying, and gaps appear.

The all-pervasive airflow entrains carbon powder to fill the gaps, expands after heating, and gradually expands the gaps, resulting in damage to the wall structure, and the silica bricks are gradually cracked due to changes in stress conditions. In severe cases, the whole brick may crack. After several trials and tribulations, the bearing capacity of the entire wall is getting worse and worse until the function is lost

If measures are not taken in time to repair, there is a danger of collapse