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Environment-friendly brick manufacturing method

A manufacturing method and technology of environmentally friendly bricks, applied in the field of building materials, can solve problems such as brick cracking, brick damage, and high energy consumption, and achieve the effects of improving compressive strength, avoiding the output of waste gas, and reducing environmental pollution rates

Active Publication Date: 2017-01-04
GUIZHOU ANSHUN JIAYU NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, no matter which one of the above, or which kind of environmental protection bricks in the prior art is prepared, it cannot avoid high temperature treatment, so that the energy consumption in the production process of environmental protection bricks is large, the cost is high, and in the process of high temperature treatment In the middle, it is very easy to cause the formed bricks to crack during the water shrinkage process, resulting in damage to the bricks

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for manufacturing environmentally friendly bricks. The environmentally friendly brick adobe formed by extrusion is placed in a sealed container with a temperature of 30-40°C, and nitrogen is introduced into the sealed container to increase the pressure in the sealed container to 1.3- Under 1.5MPa, place it under constant pressure for 10-20 days, take it out, and bake it in a baking oven at 30-40°C for 10-30 minutes. During the preparation process of the brick, its raw material composition can be the brick adobe that is crushed, aged, and extruded after the raw material is prepared according to the following parts by weight:

[0022] Construction waste 18-23, river mud 18-27, sludge 19-28, slag 15-20, slag powder 20-28 and oxygenator 0.5-1.

Embodiment 2

[0024] A method for manufacturing environmentally friendly bricks. The extruded environmentally friendly brick adobe is placed in a sealed container with a temperature of 35°C, and carbon dioxide gas is introduced into the sealed container to increase the pressure in the sealed container to below 1.4MPa , place it under constant pressure for 15 days, take it out, put it in a baking oven with a temperature of 35°C and bake for 20 minutes. The environmental protection brick, its raw material composition by weight is 5 parts of yellow phosphorus furnace tailings, 6 parts of fly ash, 40 parts of river sand, 0.2 parts of PVC, 0.5 parts of phosphogypsum, and 9 parts of water.

Embodiment 3

[0026] A method for manufacturing environmentally friendly bricks. The environmentally friendly brick adobe formed by extrusion is placed in a sealed container with a temperature of 30°C, and an inert gas is introduced into the sealed container to increase the pressure in the sealed container to below 1.5 MPa. , place it under constant pressure for 10 days, take it out, and bake it in a baking oven at 40°C for 10 minutes. The inert gas is argon. The inert gas is introduced at a rate of 3mL / min. The environmental protection brick, its raw material composition by weight is 5 parts of yellow phosphorus furnace tailings, 6 parts of fly ash, 40 parts of river sand, 0.2 parts of PVC, 0.5 parts of phosphogypsum, and 9 parts of water. The fineness of the yellow phosphorus furnace tailings is 60 mesh; the fineness of the river sand is 50 mesh. The treatment of the environmental protection brick adobe before forming is to mix the yellow phosphorous furnace tailings and fly ash uniform...

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Abstract

The invention relates to the technical field of building materials, in particular to an environment-friendly brick manufacturing method. Formed green bricks are subjected to constant-temperature pressurization treatment in a sealed container, and the formed green bricks are dried and formed, and when the pressure in the container is increased, the bricks are extruded and shrunk from the periphery through the pressure inside the container, so as to prevent the phenomenon of damage or deformation of the bricks caused by uneven shrinkage during the high-temperature calcinations forming process, improve the integral appearance of the bricks after the green bricks are formed, simultaneously improve the bending resistance and the compressive strength of the formed green bricks, the energy consumption of curing treatment after the green bricks are formed is reduced, the waste gas is prevented from being produced, and the environmental pollution rate is reduced.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for manufacturing environmentally friendly bricks. Background technique [0002] With the continuous development of basic construction, the demand for building bricks is also increasing; 2. In the prior art, building load-bearing bricks are mainly based on clay bricks, which are formed through clay, molding and roasting, so that in the process of manufacturing In the process, it will not only cause damage to a large amount of cultivated land, but also release a large amount of harmful gas during the firing process, causing pollution to the environment. [0003] In view of this, some researchers have done a lot of research on environmental protection bricks, such as the environmental protection brick with the patent number 201110065904.9 and its preparation method, which uses stone tailings, fly ash, quicklime, river sand and water as raw materials for full sti...

Claims

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Application Information

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IPC IPC(8): C04B28/08
CPCC04B28/087C04B18/08C04B14/06C04B24/2682C04B22/144
Inventor 郭建培
Owner GUIZHOU ANSHUN JIAYU NEW MATERIALS
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