Magnesium high-temperature ceramic bond, preparation and application thereof

Abstract

The invention belongs to the technical field of a refractory material and specifically relates to a magnesium high-temperature ceramic bond, a preparation and an application thereof. The magnesium high-temperature ceramic bond is prepared from the following raw materials in parts by weight: 30-70 parts of light calcined magnesia (containing 92%-98% of MgO), 3-12 parts of aluminum sulfate, 3-12 parts of sodium citrate, 3-12 parts of magnesium sulfate, 3-12 parts of boric anhydride, 1-10 parts of yellow dextrin powder and 0.1-0.15 part of hydroxypropyl methyl cellulose. The magnesium high-temperature ceramic bond can be applied to a magnesium-rich unburned brick system, an aluminum-rich unburned brick, a magnesium-rich burned brick and an amorphous product system. The magnesium high-temperature ceramic bond provided by the invention has the advantages of no pollution, energy-saving effect, high binding capacity, simple adding mode, capability of prolonging service life of the refractory material and binding functions under low, medium and high temperatures. The preparation method provided by the invention is simple in operation and wide in application.

Description

technical field

[0001] The invention belongs to the technical field of refractory materials, and in particular relates to a magnesia high-temperature ceramic bond and its preparation and application. Background technique

[0002] Refractory materials refer to inorganic non-metallic solid materials with a refractoriness greater than 1580 ° C. They are widely used in various fields of the national economy such as steel, non-ferrous metals, glass, cement, ceramics, petrochemicals, machinery, boilers, light industry, electric power, and military industry. It plays an irreplaceable important role in the development of high temperature industrial production. Refractory materials are used in the largest amount in the metallurgical industry, accounting for 50% to 70% of the total output. There are many kinds of refractory materials, and there are many classification methods, mainly including chemical attribute classification, chemical mineral composition classification, production ...

Examples

Embodiment 1

[0039] The preparation method of the magnesia high-temperature ceramic bond of the present invention has the following steps.

[0040] (1) Weigh 8 parts of aluminum sulfate, 7 parts of sodium citrate, 8 parts of magnesium sulfate, 8 parts of boric anhydride, 7 parts of yellow dextrin powder and 0.12 parts of hydroxypropyl methylcellulose in stainless steel by weight. In an electrically heated reactor, the temperature in the reactor is 150° C., the pressure in the reactor is 5 kg, the stirring speed of the reactor is 15 r / min, and the stirring time of the reactor is 3 minutes to prepare the mixed powder.

[0041] (2) Put the mixed powder prepared in step (1) into a ball mill, then weigh 50 parts of light-burned magnesium oxide (MgO content is 98%) by weight and put it into the ball mill, the ball milling time is 3min, and the ball milling speed 20r / min, the total grinding particle size reaches 325 mesh to get the finished product.

Embodiment 2

[0043] The preparation method of the magnesia high-temperature ceramic bond of the present invention has the following steps.

[0044] (1) Take 6 parts of aluminum sulfate, 6 parts of sodium citrate, 9 parts of magnesium sulfate, 9 parts of boric anhydride, 4 parts of yellow dextrin powder and 0.12 part of hydroxypropyl methylcellulose by weight and put them into the stainless steel electric In the heated reactor, the temperature in the reactor is 145° C., the pressure in the reactor is 6 kg, the stirring speed of the reactor is 28 r / min, and the stirring time of the reactor is 5 minutes, to obtain the mixed powder.

[0045] (2) Put the mixed powder prepared in step (1) into a ball mill, then weigh 55 parts of light-burned magnesium oxide (MgO content is 96%) by weight and put it into the ball mill, the ball milling time is 5min, and the ball milling speed 30r / min, the total grinding particle size reaches 325 mesh to get the finished product.

Embodiment 3

[0047] The preparation method of the magnesia high-temperature ceramic bond of the present invention has the following steps.

[0048] (1) Weigh 11 parts of aluminum sulfate, 4 parts of sodium citrate, 4 parts of magnesium sulfate, 10 parts of boric anhydride, 8 parts of yellow dextrin powder and 0.12 parts of hydroxypropyl methylcellulose by weight and put them into a stainless steel electric In the heated reactor, the temperature in the reactor is 160° C., the pressure in the reactor is 7 kg, the stirring speed of the reactor is 25 r / min, and the stirring time of the reactor is 4 minutes to prepare the mixed powder.

[0049] (2) Put the mixed powder obtained in step (1) into a ball mill, then weigh 65 parts of light-burned magnesium oxide (MgO content is 93%) by weight and put it into the ball mill, the ball milling time is 6min, and the ball milling speed 15r / min, the total grinding particle size reaches 325 mesh to get the finished product.

technical field

[0001] The invention belongs to the technical field of refractory materials, and in particular relates to a magnesia high-temperature ceramic bond and its preparation and application. Background technique

[0002] Refractory materials refer to inorganic non-metallic solid materials with a refractoriness greater than 1580 ° C. They are widely used in various fields of the national economy such as steel, non-ferrous metals, glass, cement, ceramics, petrochemicals, machinery, boilers, light industry, electric power, and military industry. It plays an irreplaceable important role in the development of high temperature industrial production. Refractory materials are used in the largest amount in the metallurgical industry, accounting for 50% to 70% of the total output. There are many kinds of refractory materials, and there are many classification methods, mainly including chemical attribute classification, chemical mineral composition classification, production ...

Examples

Embodiment 1

[0039] The preparation method of the magnesia high-temperature ceramic bond of the present invention has the following steps.

[0040] (1) Weigh 8 parts of aluminum sulfate, 7 parts of sodium citrate, 8 parts of magnesium sulfate, 8 parts of boric anhydride, 7 parts of yellow dextrin powder and 0.12 parts of hydroxypropyl methylcellulose in stainless steel by weight. In an electrically heated reactor, the temperature in the reactor is 150° C., the pressure in the reactor is 5 kg, the stirring speed of the reactor is 15 r / min, and the stirring time of the reactor is 3 minutes to prepare the mixed powder.

[0041] (2) Put the mixed powder prepared in step (1) into a ball mill, then weigh 50 parts of light-burned magnesium oxide (MgO content is 98%) by weight and put it into the ball mill, the ball milling time is 3min, and the ball milling speed 20r / min, the total grinding particle size reaches 325 mesh to get the finished product.

Embodiment 2

[0043] The preparation method of the magnesia high-temperature ceramic bond of the present invention has the following steps.

[0044] (1) Take 6 parts of aluminum sulfate, 6 parts of sodium citrate, 9 parts of magnesium sulfate, 9 parts of boric anhydride, 4 parts of yellow dextrin powder and 0.12 part of hydroxypropyl methylcellulose by weight and put them into the stainless steel electric In the heated reactor, the temperature in the reactor is 145° C., the pressure in the reactor is 6 kg, the stirring speed of the reactor is 28 r / min, and the stirring time of the reactor is 5 minutes, to obtain the mixed powder.

[0045] (2) Put the mixed powder prepared in step (1) into a ball mill, then weigh 55 parts of light-burned magnesium oxide (MgO content is 96%) by weight and put it into the ball mill, the ball milling time is 5min, and the ball milling speed 30r / min, the total grinding particle size reaches 325 mesh to get the finished product.

Embodiment 3

[0047] The preparation method of the magnesia high-temperature ceramic bond of the present invention has the following steps.

[0048] (1) Weigh 11 parts of aluminum sulfate, 4 parts of sodium citrate, 4 parts of magnesium sulfate, 10 parts of boric anhydride, 8 parts of yellow dextrin powder and 0.12 parts of hydroxypropyl methylcellulose by weight and put them into a stainless steel electric In the heated reactor, the temperature in the reactor is 160° C., the pressure in the reactor is 7 kg, the stirring speed of the reactor is 25 r / min, and the stirring time of the reactor is 4 minutes to prepare the mixed powder.

[0049] (2) Put the mixed powder obtained in step (1) into a ball mill, then weigh 65 parts of light-burned magnesium oxide (MgO content is 93%) by weight and put it into the ball mill, the ball milling time is 6min, and the ball milling speed 15r / min, the total grinding particle size reaches 325 mesh to get the finished product.

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