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Coal ash heat preservation brick

A technology for fly ash and thermal insulation bricks, which is applied in the field of fly ash thermal insulation bricks, can solve the problems of poor mechanical properties and thermal insulation properties of fly ash bricks, and achieves the improvement of mechanical properties, compressive strength and thermal insulation performance. Effect

Inactive Publication Date: 2019-10-29
杨帮燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem mainly solved by the present invention is: Aiming at the problem of poor mechanical properties and thermal insulation performance of traditional fly ash bricks, a kind of fly ash thermal insulation brick is provided

Method used

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  • Coal ash heat preservation brick

Examples

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Effect test

example 1

[0038] Mix Paulownia wood particles with a particle size of 1.5mm and water at a mass ratio of 1:10, and add dopamine 0.3 times the water quality to the mixture of Paulownia wood particles and water, and set the temperature at 40°C and rotate at 300r / min. Stir and mix for 30 minutes under the same conditions, filter to obtain pretreated paulownia wood; add water to a beaker and heat to 60°C, add ammonium nitrate to the beaker until crystals are precipitated, filter to obtain the filtrate, and obtain a saturated aqueous solution of ammonium nitrate ; Mix cork particles and ammonium nitrate saturated aqueous solution at a mass ratio of 1:10, stir and mix for 30 minutes at a temperature of 60°C and a rotational speed of 300r / min, then cool the mixture of cork particles and ammonium nitrate aqueous solution to 20°C , filtered to obtain a filter cake, and dried the filter cake at a temperature of 70°C for 40 minutes to obtain pretreated cork particles, which were mixed with pretreat...

example 2

[0040] Mix Paulownia wood particles with a particle size of 1.5mm and water at a mass ratio of 1:10, and add dopamine 0.3 times the water quality to the mixture of Paulownia wood particles and water, and set the temperature at 40°C and rotate at 300r / min. Stir and mix for 30 minutes under the same conditions, filter to obtain pretreated paulownia wood; add water to a beaker and heat to 60°C, add ammonium nitrate to the beaker until crystals are precipitated, filter to obtain the filtrate, and obtain a saturated aqueous solution of ammonium nitrate Add diisocyanate into the reactor, drip diethylamine solution with 3 times the quality of diisocyanate into the reactor at a rate of 10mL / min, and feed nitrogen into the reactor at a rate of 20mL / min, at a temperature of 55 ℃, the rotation speed is 300r / min under the condition of heating and stirring for 3 hours, the pretreated isocyanate is obtained, and the pretreated isocyanate is vacuum-dried for 5 days at a temperature of 50℃, an...

example 3

[0042] Mix Paulownia wood particles with a particle size of 1.5mm and water at a mass ratio of 1:10, and add dopamine 0.3 times the water quality to the mixture of Paulownia wood particles and water, and set the temperature at 40°C and rotate at 300r / min. Stir and mix for 30 minutes under the same conditions, filter to obtain pretreated paulownia wood; add water to a beaker and heat to 60°C, add ammonium nitrate to the beaker until crystals are precipitated, filter to obtain the filtrate, and obtain a saturated aqueous solution of ammonium nitrate ; Mix agar and water at a mass ratio of 1:15, and add beef extract 0.3 times the mass of agar and peptone 0.2 times the mass of agar to the mixture of agar and water, at a temperature of 65°C and a rotation speed of 300r / min After stirring and mixing for 50 minutes, the agar mixture was obtained. The cork particle agar mixture was mixed at a mass ratio of 1:5, soaked at a temperature of 55°C for 90 minutes, and then filtered to obtain...

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Abstract

The invention discloses a coal ash heat preservation brick and belongs to the technical field of building materials. The coal ash heat preservation brick is prepared by sequentially weighing the following components in parts by weight: coal ash, quartz mine tailings, modified soft wood granules, pretreated paulownia wood, additives, Portland cement, urea, water, gypsum and quick lime; mixing the Portland cement with the water in a stirring machine, and sequentially adding the additives, the modified soft wood granules, the urea, the coal ash, the quartz mine tailings, the quick lime, the gypsum and the pretreated paulownia wood into the stirring machine, and performing stirring and mixing for 45-100 minutes under conditions that the temperature is 50-60 DEG C and the rotation speed is 200-300r / min so as to obtain a pretreatment blank; performing pressing molding on the pretreatment blank under a condition that the pressure is 25-30MPa so as to obtain a blank material, maintaining the blank material for 10-20 hours under conditions that the temperature is 180-200 DEG C and the vapor pressure is 1.2-1.5MPa, performing cooling to the room temperature, and performing material discharge, so as to obtain the coal ash heat preservation brick. The coal ash heat preservation brick disclosed by the invention has excellent mechanical properties and heat preservation properties.

Description

technical field [0001] The invention discloses a fly ash heat insulating brick, which belongs to the technical field of building materials. Background technique [0002] Fly ash is a kind of industrial solid waste discharged from coal-fired boilers in thermal power plants. It is the fine soot collected from flue gas when coal-fired power plants burn pulverized coal. Stacking is the main way to deal with fly ash at present. The stacking of red mud and fly ash not only occupies land resources, but also consumes more yard construction and maintenance costs, and damages the ecological environment, causing serious pollution and endangering the natural environment and human beings. Health is also a waste of resources. The carbon content in fly ash reaches 10% to 30%, and this part of heat can be fully utilized when firing bricks. The use of industrial waste to produce new wall materials is a new way, new method, and new idea to use waste residue, save energy, and turn waste into...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B20/02
CPCC04B20/023C04B28/14C04B2201/32C04B2201/50C04B18/08C04B18/12C04B18/26C04B7/02C04B24/126C04B7/34C04B24/281C04B24/12C04B20/02
Inventor 杨帮燕万振张烨
Owner 杨帮燕
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