Preparation method of high-strength alkali-resistant brick

Abstract

The invention discloses a preparation method of a high-strength alkali-resistant brick, and relates to the technical field of brick making. The method comprises a mixing stage, a green brick forming stage and a drying stage, a preheating stage, a roasting stage, a heat preservation stage and a cooling stage, wherein the raw materials used in the method comprise 30-40 parts of pretreated acid leaching manganese slag, 70-80 parts of mixed stone slurry, 20-25 parts of porous fine sand, 10-15 parts of triethanolamine, 20-30 parts of quick lime, 3-5 parts of cobalt nitrate and 4-5 parts of nickel nitrate. The pretreated acid-leached manganese slag comprises acid-leached manganese slag, quick lime and distilled water in a mixing mass ratio of 4 : 1 : 7, and the specification of the molded greenbrick is 240mm * 115mm * 53mm. The organic binding agent, the organic acid and the dispersing agent are mixed into the raw materials, so that after the brick is fired and cooled, the density of a brick body is guaranteed; meanwhile, the alkali resistance of the brick body is improved, and the safety of a building built by the brick is guaranteed.

Description

technical field

[0001] The invention relates to the technical field, in particular to a method for preparing high-strength alkali-resistant bricks. Background technique

[0002] Bricks are generally fired from clay. Clay is the product of some aluminosilicate minerals weathered for a long time. It is named after its strong viscosity. The clay is mixed with water to make bricks, which are then calcined in a brick kiln to make bricks. Clay contains iron, and when it is completely oxidized in the firing process, it will produce ferric oxide, which is red, which is the most commonly used red brick; and if it is cooled by adding water during the firing process, the iron in the clay is incompletely oxidized (Fe3O4), and it will turn red. Cyan, that is, blue bricks.

[0003] In the existing firing technology of red bricks or blue bricks, only clay or other ingredients are usually used to mix into a compact, and then fired into shape. This kind of brick body has poor alkali resista...

Examples

Embodiment 1

[0030] A method for preparing high-strength alkali-resistant bricks, comprising a mixing stage, a brick forming stage, a drying stage, a preheating stage, a roasting stage, a heat preservation stage and a cooling stage, and the specific steps are as follows:

[0031] S1: In the mixing stage, the raw materials are fully mixed and stirred according to the predetermined ratio, and humidified after stirring;

[0032] S2: In the adobe forming stage, the stirred and humidified raw materials are molded with a mold to form a block of cuboids to obtain adobe;

[0033] S3: In the drying stage, the bricks are placed on the conveyor belt of the firing kiln, and the bricks are heated by the hot air system of the firing kiln;

[0034] S4: In the preheating stage, the firing exhaust gas from the firing kiln in other firing stages is introduced, and the bricks are preheated in conjunction with the heating system in the firing kiln in the preheating stage. The upper limit of the preheating tem...

Embodiment 2

[0045] A method for preparing high-strength alkali-resistant bricks, comprising a mixing stage, a brick forming stage, a drying stage, a preheating stage, a roasting stage, a heat preservation stage and a cooling stage, and the specific steps are as follows:

[0046] S1: In the mixing stage, the raw materials are fully mixed and stirred according to the predetermined ratio, and humidified after stirring;

[0047] S2: In the adobe forming stage, the stirred and humidified raw materials are molded with a mold to form a block of cuboids to obtain adobe;

[0048] S3: In the drying stage, the bricks are placed on the conveyor belt of the firing kiln, and the bricks are heated by the hot air system of the firing kiln;

[0049] S4: In the preheating stage, the firing exhaust gas from the firing kiln in other firing stages is introduced, and the bricks are preheated in conjunction with the heating system in the firing kiln in the preheating stage. The upper limit of the preheating tem...

Embodiment 3

[0061] A method for preparing high-strength alkali-resistant bricks, comprising a mixing stage, a brick forming stage, a drying stage, a preheating stage, a roasting stage, a heat preservation stage and a cooling stage, and the specific steps are as follows:

[0062] S1: In the mixing stage, the raw materials are fully mixed and stirred according to the predetermined ratio, and humidified after stirring;

[0063] S2: In the adobe forming stage, the stirred and humidified raw materials are molded with a mold to form a block of cuboids to obtain adobe;

[0064] S3: In the drying stage, the bricks are placed on the conveyor belt of the firing kiln, and the bricks are heated by the hot air system of the firing kiln;

[0065] S4: In the preheating stage, the exhaust gas from the firing kiln in other firing stages is introduced, and the brick is preheated in conjunction with the heating system in the firing kiln in the preheating stage. The upper limit of the preheating temperature ...

technical field

[0001] The invention relates to the technical field, in particular to a method for preparing high-strength alkali-resistant bricks. Background technique

[0002] Bricks are generally fired from clay. Clay is the product of some aluminosilicate minerals weathered for a long time. It is named after its strong viscosity. The clay is mixed with water to make bricks, which are then calcined in a brick kiln to make bricks. Clay contains iron, and when it is completely oxidized in the firing process, it will produce ferric oxide, which is red, which is the most commonly used red brick; and if it is cooled by adding water during the firing process, the iron in the clay is incompletely oxidized (Fe3O4), and it will turn red. Cyan, that is, blue bricks.

[0003] In the existing firing technology of red bricks or blue bricks, only clay or other ingredients are usually used to mix into a compact, and then fired into shape. This kind of brick body has poor alkali resista...

Examples

Embodiment 1

[0030] A method for preparing high-strength alkali-resistant bricks, comprising a mixing stage, a brick forming stage, a drying stage, a preheating stage, a roasting stage, a heat preservation stage and a cooling stage, and the specific steps are as follows:

[0031] S1: In the mixing stage, the raw materials are fully mixed and stirred according to the predetermined ratio, and humidified after stirring;

[0032] S2: In the adobe forming stage, the stirred and humidified raw materials are molded with a mold to form a block of cuboids to obtain adobe;

[0033] S3: In the drying stage, the bricks are placed on the conveyor belt of the firing kiln, and the bricks are heated by the hot air system of the firing kiln;

[0034] S4: In the preheating stage, the firing exhaust gas from the firing kiln in other firing stages is introduced, and the bricks are preheated in conjunction with the heating system in the firing kiln in the preheating stage. The upper limit of the preheating tem...

Embodiment 2

[0045] A method for preparing high-strength alkali-resistant bricks, comprising a mixing stage, a brick forming stage, a drying stage, a preheating stage, a roasting stage, a heat preservation stage and a cooling stage, and the specific steps are as follows:

[0046] S1: In the mixing stage, the raw materials are fully mixed and stirred according to the predetermined ratio, and humidified after stirring;

[0047] S2: In the adobe forming stage, the stirred and humidified raw materials are molded with a mold to form a block of cuboids to obtain adobe;

[0048] S3: In the drying stage, the bricks are placed on the conveyor belt of the firing kiln, and the bricks are heated by the hot air system of the firing kiln;

[0049] S4: In the preheating stage, the firing exhaust gas from the firing kiln in other firing stages is introduced, and the bricks are preheated in conjunction with the heating system in the firing kiln in the preheating stage. The upper limit of the preheating tem...

Embodiment 3

[0061] A method for preparing high-strength alkali-resistant bricks, comprising a mixing stage, a brick forming stage, a drying stage, a preheating stage, a roasting stage, a heat preservation stage and a cooling stage, and the specific steps are as follows:

[0062] S1: In the mixing stage, the raw materials are fully mixed and stirred according to the predetermined ratio, and humidified after stirring;

[0063] S2: In the adobe forming stage, the stirred and humidified raw materials are molded with a mold to form a block of cuboids to obtain adobe;

[0064] S3: In the drying stage, the bricks are placed on the conveyor belt of the firing kiln, and the bricks are heated by the hot air system of the firing kiln;

[0065] S4: In the preheating stage, the exhaust gas from the firing kiln in other firing stages is introduced, and the brick is preheated in conjunction with the heating system in the firing kiln in the preheating stage. The upper limit of the preheating temperature ...

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