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Firm can plastic and preparation method thereof

A technology that can plasticize and harden armor is applied in the field of hardening plastic and its preparation, which can solve the problems of poor wall bearing capacity, volume shrinkage of ash joints, and damage to wall structure, so as to reduce the number of furnace shutdowns and reduce refractory materials. Consumption and the effect of improving economic efficiency

Active Publication Date: 2013-12-11
宜兴市炉顶密封工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: a kind of hard shell plastic of the present invention, comprises the mixture of 80% silicon carbide and mullite, and low temperature sintering agent is 18%, and in mixture, silicon carbide is 5%, and mullite is 95%, is less than 2200 The target siliceous micropowder is 2%, and the above percentages are mass percentages. The low-temperature sintering agent adopts Yixing mud obtained after being calcined at 1100°C, and the mass percentage of aluminum oxide in Yixing mud is 35-40%; the purity of siliceous micropowder is 99.99%.

[0026] The critical particle size of the tough plastic is 10-20 mm. The size of the critical particle size is determined with the thickness of the hard plastic masonry that needs to be built during the construction process.

[0027] The backbone plastic of the present invention has the following characteristics:

[0028] a. Compressive strength:

[0029] Compressive strength is the ultimate stress of a material sample in failure u...

Embodiment 2

[0035] Embodiment 2: a kind of hard shell plastic of the present invention, comprises the mixture of 90% silicon carbide and mullite, low-temperature sintering agent is 8%, is less than 2200 order siliceous micropowders and is 12%, and silicon carbide is 15% in the mixture %, mullite is 85%, and the above percentages are mass percentages. The low-temperature sintering agent adopts Yixing mud obtained after being calcined at 1100°C, and the mass percentage of aluminum oxide in Yixing mud is 35-40%; the purity of siliceous micropowder is 99.99%.

[0036] The purpose of adding SiC in the present invention is that due to the presence of nitrogen atmosphere in the furnace, this cold inert gas will directly react with SiC to form silicon nitride, which is a material with high wear resistance and can The furnace lining itself plays a strong protective role, thereby enhancing the wear resistance of the masonry.

Embodiment 3

[0037] Embodiment 3: a kind of hard shell plastic of the present invention, comprises the mixture of 85% silicon carbide and mullite, low-temperature sintering agent is 13%, is less than 2200 order siliceous micropowders and is 8%, and silicon carbide is 10% in the mixture %, mullite is 90%, and the above percentages are mass percentages. The low-temperature sintering agent adopts Yixing mud obtained after being calcined at 1100°C, and the mass percentage of aluminum oxide in Yixing mud is 35-40%; the purity of siliceous micropowder is 99.99%.

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 李洪明邵志君
Owner 宜兴市炉顶密封工程有限公司
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