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Method for manufacturing high-grade building materials of landscape bricks and archaized bricks from coal gangue

A technology of building materials and coal gangue, which is applied in the field of using coal gangue to make high-grade building materials such as landscape bricks and antique bricks, can solve the problems of low strength and high sintering deformation rate, and achieve the goals of improving density, stable product quality and reducing moisture Effect

Pending Publication Date: 2021-07-02
北票天宝耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are generally low strength and high sintering deformation rate
The market has not made a breakthrough in the use of coal gangue sintered landscape bricks and antique bricks that meet the national standard (GB / T 26001-2010) for many years.

Method used

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  • Method for manufacturing high-grade building materials of landscape bricks and archaized bricks from coal gangue
  • Method for manufacturing high-grade building materials of landscape bricks and archaized bricks from coal gangue
  • Method for manufacturing high-grade building materials of landscape bricks and archaized bricks from coal gangue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) coal gangue (1# product in Table 1 for composition) 76.8kg; bentonite 18kg; sodium hexametaphosphate 0.5kg; hydroxymethyl methylcellulose 2.5kg; water 6kg;

[0027] (2) Get the coal gangue and grind it through a 0.42mm sieve and pass it through, get the bentonite and grind it through a 0.18mm sieve and pass it through, and fully mix the sieved coal gangue and bentonite to obtain a mixture;

[0028] (3) Get sodium hexametaphosphate, get hydroxymethyl cellulose and put them into water for dilution, spray the diluted water mixture evenly on the surface of the mixture in step (2), stir evenly; put it into the aging bin and age for 48h , put it into the forming mold, the size of the mold is length × width × height 200mm × 100mm × 100mm; use 350 tons of hydraulic press to press, press statically for 0.2 seconds, and dynamically press twice to obtain length × width × Semi-finished body with a height of 200mm×100mm×(55.6±0.6mm);

[0029] (4) Put the semi-finished green bod...

Embodiment 2

[0031] (1) Coal gangue (see 1# product in Table 1 for composition) 80kg; Bentonite 15kg; Sodium hexametaphosphate 0.6kg; Hydroxymethyl methylcellulose 1.5kg; Water 6kg;

[0032] (2) Get the coal gangue and grind it through a 0.42mm sieve and pass it through, get the bentonite and grind it through a 0.18mm sieve and pass it through, and fully mix the sieved coal gangue and bentonite to obtain a mixture;

[0033] (3) Get sodium hexametaphosphate, get hydroxymethyl cellulose and put them into water for dilution, spray the diluted water mixture evenly on the surface of the mixture in step (2), stir evenly; put it into the aging bin and age for 48h , put it into the forming mold, the size of the mold is length × width × height 200mm × 100mm × 100mm; use 350 tons of hydraulic press to press, press statically for 0.2 seconds, and dynamically press twice to obtain length × width × Semi-finished body with a height of 200mm×100mm×(55.6±0.6mm);

[0034] (4) Put the semi-finished green b...

Embodiment 3

[0036] (1) coal gangue (2# product in Table 1 for composition) 78kg; bentonite 16kg; sodium hexametaphosphate 0.55kg; hydroxymethyl methylcellulose 2kg; water 6kg;

[0037] (2) Get the coal gangue and grind it through a 0.42mm sieve and pass it through, get the bentonite and grind it through a 0.18mm sieve and pass it through, and fully mix the sieved coal gangue and bentonite to obtain a mixture;

[0038](3) Get sodium hexametaphosphate, get hydroxymethyl cellulose and put them into water for dilution, spray the diluted water mixture evenly on the surface of the mixture in step (2), stir evenly; put it into the aging bin and age for 48h , put it into the forming mold, the size of the mold is length × width × height 200mm × 100mm × 100mm; use 350 tons of hydraulic press to press, press statically for 0.2 seconds, and dynamically press twice to obtain length × width × Semi-finished body with a height of 200mm×100mm×(55.6±0.6mm);

[0039] (4) Put the semi-finished green body in...

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Abstract

The invention relates to a method for manufacturing a high-grade building materials of landscape bricks and archaized bricks from coal gangue, which comprises the following steps of: finely grinding the coal gangue to pass through a 0.42 mm sieve, finely grinding bentonite to pass through a 0.18 mm sieve, and fully and uniformly mixing and stirring the sieved coal gangue and bentonite to obtain a mixed material; putting sodium hexametaphosphate and hydroxymethyl cellulose into water to be diluted, uniformly spraying on the surface of the mixed material, and uniformly stirring the materials ; after aging, putting into a forming mold, and pressing by using a 350-ton hydraulic machine to obtain a semi-finished blank; and drying the semi-finished green body for 24 hours in an environment with the temperature of 42 DEG C and the relative humidity of 70%, putting the dried semi-finished green body into a tunnel kiln, carrying out gradient heating roasting, cooling in a reducing atmosphere, and discharging the cooled semi-finished green body out of the tunnel kiln to obtain the landscape brick. The high-grade building material for the landscape bricks and the archaized bricks takes the coal gangue as a main raw material, is environment-friendly and economical, has the characteristic of high strength, is high in product yield, and is a high-grade building material for the landscape bricks and the archaized bricks with high ornamental value and practicability.

Description

technical field [0001] The invention relates to a method for making high-grade building materials such as landscape bricks and antique bricks by using coal gangue. Background technique [0002] Chaoyang Beipiao is located in the west of Liaoning, and Beipiao has a coal mining history of more than 100 years. There is a large area of ​​waste coal and gangue piled up, causing serious pollution to the local environment. The coal gangue of Beipiao has a calorific value of 400Kcal / Kg-800Kcal / Kg and a total reserve of more than 100 million tons. At present, there is only small-scale sorting, mainly ordinary sintered standard bricks. The industry is low-end, and the annual processing capacity does not exceed 10 10,000 tons, the stockpiled coal gangue occupies land, makes planting difficult, and causes air and groundwater pollution, which is the main source of environmental disasters and needs to be treated as soon as possible. [0003] Coal gangue is a good raw material for buildi...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B33/32C04B33/13
CPCC04B33/132C04B33/32C04B33/131C04B33/1305C04B2235/6562C04B2235/6567Y02P40/60
Inventor 屈振世李明真庞爱学
Owner 北票天宝耐火材料有限公司
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