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A method for producing blue bricks and tiles

A technology for bricks and bricks, which is applied to the field of building materials, can solve the problems of increasing production costs, complicated production processes, etc., and achieves the effects of avoiding secondary oxidation, simple production processes and low pollution.

Active Publication Date: 2015-10-28
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that nitrogen and hot air are introduced into the bell jar when cooling the bricks and tiles, which increases the production cost and the production process is relatively complicated.

Method used

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  • A method for producing blue bricks and tiles
  • A method for producing blue bricks and tiles
  • A method for producing blue bricks and tiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In this embodiment, the raw materials of brick and tile blanks are clay and 60% coal gangue accounting for 40% of the total mass of raw materials, and the bulk materials are spontaneous combustion coal gangue slag.

[0033] Coal gangue is crushed twice by jaw type, and the maximum particle size after crushing is 5mm; the raw materials are dispersed and mixed, and the amount of water added to the mixture during the mixing process is 11%; the aging time of the mixture is 10 days, and the aging time is 10 days. Add water to the melted mixture to 12% while stirring; the green body is formed by pressing, and the forming pressure is 20MPa; the shaped bricks are naturally air-dried for 20 days.

[0034] The dried brick and tile adobe 1 is loaded into the preheating zone A of the tunnel kiln with the kiln car 2 for preheating, and the preheated brick and tile adobe enters the roasting zone B for reduction roasting, and the heating rate of the roasting is 60°C / h. The sintering t...

Embodiment 2

[0038] In this embodiment, the raw materials of brick and tile adobe are clay and 60% coal gangue, which account for 40% of the total mass of raw materials, and iron tailings are used as bulk materials.

[0039] Coal gangue is crushed twice by jaw type, and the maximum particle size after crushing is 5mm; the raw materials are dispersed and mixed, and the amount of water added to the mixture during the mixing process is 11%; the aging time of the mixture is 10 days, and the aging time is 10 days. Add water to the melted mixture to 12% while stirring; the green body is formed by pressing, and the forming pressure is 20MPa; the shaped bricks are naturally air-dried for 20 days.

[0040] The dried brick and tile adobe 1 is loaded into the preheating zone A of the tunnel kiln by the kiln car 2 for preheating, and the preheated brick and tile adobe enters the roasting zone B for roasting, and the roasting zone B is divided into an oxidation roasting zone and reduction roasting bel...

Embodiment 3

[0044] In this embodiment, the raw materials of brick and tile blanks are clay which accounts for 80% of the total mass of raw materials and coal gangue which accounts for 20%. .

[0045] Coal gangue is crushed twice by jaw type, and the maximum particle size after crushing is 5mm; the raw materials are dispersed and mixed, and the amount of water added to the mixture during the mixing process is 13%; the aging time of the mixture is 10 days, and the aging time is 10 days. Add water to the melted mixture to 14% while stirring; the green body is formed by pressing, and the forming pressure is 20MPa; the shaped bricks are naturally air-dried for 20 days.

[0046] The dried brick and tile adobe 1 is loaded into the preheating zone A of the tunnel kiln by the kiln car 2 for preheating, and the preheated brick and tile adobe enters the roasting zone B for oxidative roasting, and the heating rate of the roasting is 60°C / h. The sintering temperature is 950°C, and the holding time is...

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Abstract

The invention belongs to the field of building materials, in particular to a method for manufacturing blue brick tiles. According to the invention, dried brick tiles are loaded onto a kiln car and transported into a tunnel kiln for preheating and baking; the kiln car is pulled out and transported to a scattered material placing zone; a kiln car shield is placed onto the kiln car; a scattered material placing opening is formed in the upper part of the kiln car shield; the scattered material is placed inside the kiln car shield through the scattered material placing opening, and covers the periphery of the brick tile blanks; a gas pressurizing nozzle is arranged below the kiln car shield and is used for ejecting non oxidizing gas into the kiln car shield so that the gaps among the brick tile blanks are filled with scattered materials; when coverage using the scattered materials is complete, the kiln car is pulled to a cooling zone, the scattered materials are separated from the brick tile blanks, and the blue brick tile products in caesious appearances are obtained. The scattered materials adopted by the invention is used as a cooling medium, water spraying into the kiln chamber for cooling is not required, the cooling rate and cooling uniformity can be controlled, damage caused by water to the brick tile blanks and the kiln is prevented, and the quality of the blue brick products is improved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a method for producing green bricks and tiles. Background technique [0002] Blue bricks and tiles carry the unique and heavy architectural aesthetic orientation of the Chinese nation, giving people a sense of elegance, simplicity and tranquility. They are irreplaceable building materials for many new antique buildings and restoration of ancient buildings. In addition, although the strength and hardness of blue bricks are similar to those of red bricks, they are better than red bricks in terms of oxidation resistance, hydration, and atmospheric erosion. [0003] When firing bricks and tiles, the iron element in the adobe material makes the product appear red when fired in an oxidizing atmosphere, and makes the product appear blue or gray when fired in a reducing atmosphere. The traditional method of producing blue bricks mostly uses a horseshoe kiln for firing, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/32
Inventor 海龙隋淑梅赵庆彪宋杨游志忠东巳宙
Owner LIAONING TECHNICAL UNIVERSITY
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