CN110357543A - A kind of light flame-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge - Google Patents

A kind of light flame-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge Download PDF

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Publication number
CN110357543A
CN110357543A CN201910819979.8A CN201910819979A CN110357543A CN 110357543 A CN110357543 A CN 110357543A CN 201910819979 A CN201910819979 A CN 201910819979A CN 110357543 A CN110357543 A CN 110357543A
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China
Prior art keywords
desulfurization wastewater
brick
retardant
wastewater sludge
sludge
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Pending
Application number
CN201910819979.8A
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Chinese (zh)
Inventor
谷建辉
焦江涛
陈庆磊
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Zhengzhou Heng Bo Environment Polytron Technologies Inc
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Zhengzhou Heng Bo Environment Polytron Technologies Inc
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Priority to CN201910819979.8A priority Critical patent/CN110357543A/en
Publication of CN110357543A publication Critical patent/CN110357543A/en
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Abstract

The present invention discloses a kind of light flame-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge, and comprise the following raw materials by weight percent: desulfurization wastewater sludge 45-55%, cement 33-43%, animal protein foaming agent 5-7%, remaining is water.The desulfurization wastewater sludge is the sludge that Northern Part of China power plant desulfurization wastewater handles that engineering generates, and wherein the weight ratio of magnesium hydroxide is greater than 60% in solids, moisture percentage in sewage sludge 45-55%.Compared with prior art, advantages of the present invention is as follows: desulfurization wastewater sludge is used to prepare light flame-retardant wall body brick by 1. present invention, makes full use of waste resource, environmentally protective;2. in inventive formulation, the flame retardant property of wall body brick is improved using the magnesium hydroxide contained in desulfurization wastewater sludge;3. in inventive formulation, forming closing spherical shape, disconnected stomata using animal protein foaming agent, improving the anti-flammability of wall body brick, substantially reduce density of material, mitigate weight.

Description

A kind of light flame-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge
Technical field
The invention belongs to Environmental-protection recycling and building materials to form technical field, and in particular to a kind of containing desulfurization wastewater sludge Light flame-retardant wall body brick and preparation method thereof.
Background technique
Currently, the most widely used flue gas desulfurization technique in coal-burning power plant is mainly one gypsum of Wet Limestone.Flue gas is de- Sulphur process will generate more Waste Water Containing Sulfur, and Waste Water Containing Sulfur processing generates a large amount of desulfurization wastewater sludge again.National requirements is each Power plant starts flue gas desulfurization project, and incident is that desulfurization wastewater sludge yield increasingly goes up, and the desulfurization of bulk deposition is useless Sewage sludge seriously restricts the development of enterprise, and causes damages to environment and ecology.
Desulfurization wastewater sludge has the characteristics such as salinity is high, moisture content is high, viscosity is big, volume is big, is not easy to be dehydrated, very unstable It is fixed, it is largely water, magnesium hydroxide, calcium sulfate, coal ash, aluminium-silicon oxide and a small amount of heavy metal hydroxide in constituent Deng.If improper to Treatment of Sludge, pollution not only can be generated to environment, can also cause serious wound to the health of people Evil.
Currently used desulfurization wastewater sludge disposal technology mainly fills, and polluted underground water problem easily occurs.
There are also make cement retarder, insulation blocks etc. using desulfurization wastewater sludge on a small quantity.It can be improved as cement retarder The intensity of cement still has an improvement result to the structure of hardening of cement body and performance, but due in desulfurization wastewater sludge containing big Magnesium hydroxide is measured, the expansion of cement is easily caused.As heat preservation stripping and slicing, water repelling property and intensity are significantly better than that common building material Material, but since insulation blocks need to calcine, sulfur dioxide is released again, is polluted.
Above-mentioned desulfurization wastewater recycling sludge method has respective limitation, how to develop a kind of more simple and effective The method of recycling is of great significance to environmental protection and resource in utilization.
Summary of the invention
The purpose of the present invention is to solve above-mentioned recycling confinement problems of the existing technology, providing a kind of will take off The method that sulphur wastewater sludge is cured as light flame-retardant wall body brick.
To achieve the above object, the solution of the present invention is as follows:
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater Sludge 45-55%, cement 33-43%, animal protein foaming agent 5-7%, remaining is water.
The desulfurization wastewater sludge is the sludge that Northern Part of China power plant desulfurization wastewater handles that engineering generates, wherein solid The weight ratio of magnesium hydroxide is greater than 60% in object, moisture percentage in sewage sludge 45-55%.
The cement is portland cement.
The animal protein foaming agent is animal hoof and foot foaming agent.
The preparation method of the light flame-retardant wall body brick containing desulfurization wastewater sludge, specific steps are as follows: desulfurization is given up Sewage sludge, cement sequentially add in container, closed, stir evenly under room temperature, and then water is added after mixing evenly in average rate, are starched Material reuses foaming machine and injects animal protein foaming agent in slurry, is stirred, then be transferred to and poured into molding equipment Molding is transferred to time control in 20min, carries out natural curing later and obtains light flame-retardant wall body brick finished product.
The method of the natural curing specifically: after being conserved 28 days under the conditions of 10 DEG C of temperature or more of natural curing to obtain the final product Finished product.
The condition of the stirring are as follows: mixing time 10-20min, speed of agitator 25-35r/min.
The utility model has the advantages that
Compared with prior art, advantages of the present invention is as follows:
1. desulfurization wastewater sludge is used to prepare light flame-retardant wall body brick by the present invention, waste resource is made full use of, it is environmentally protective;
2. in inventive formulation, the flame retardant property of wall body brick is improved using the magnesium hydroxide contained in desulfurization wastewater sludge;
3. in inventive formulation, forming closing spherical shape, disconnected stomata using animal protein foaming agent, improving wall body brick Anti-flammability substantially reduces density of material, mitigates weight.
Specific embodiment
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization Wastewater sludge 45-55%, cement 33-43%, animal protein foaming agent 5-7%, remaining is water.
Further, the desulfurization wastewater sludge is the dirt that Northern Part of China power plant desulfurization wastewater handles that engineering generates Mud, wherein the weight ratio of magnesium hydroxide is greater than 60% in solids, moisture percentage in sewage sludge 45-55%.
Further, the cement is portland cement, it is preferred to use the common commercially available silicate of label 325 or 425 Cement.
The animal protein foaming agent is animal hoof and foot foaming agent, and animal hoof and foot foaming agent is commercial product, such as can be with The animal hoof and foot foaming agent produced using the prosperous industrial and mineral Machinery Co., Ltd. of Jining remittance.
The present invention also provides the preparation methods of the light flame-retardant wall body brick containing desulfurization wastewater sludge described in one kind, specifically Step are as follows: desulfurization wastewater sludge, cement are sequentially added in container, it is closed, it is stirred evenly under room temperature, then average rate is added water and stirs Mix uniformly after, obtain slurry, reuse foaming machine by animal protein foaming agent inject slurry in, be stirred, then be transferred to at Pouring molding is carried out in type equipment, is transferred to time control in 20min, is carried out natural curing later and is obtained light flame-retardant wall Brick finished product.
Further, the method for the natural curing specifically: conserved under the conditions of 10 DEG C of temperature or more of natural curing It is got product after 28 days.
Further, the condition of the stirring are as follows: mixing time 10-20min, speed of agitator 25-35r/min.
The present invention is further explained in the light of specific embodiments, and the raw material total amount of following example is 50kg.
Embodiment 1
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater Sludge 45%, cement 43%, animal protein foaming agent 5%, remaining is water.
The preparation method of the light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the steps of: will take off Sulphur wastewater sludge, cement sequentially add in container, closed, and 25r/min, which stirs 10min, under room temperature keeps it uniform, and then average rate adds Enter water after mixing evenly, obtain slurry, reuses foaming machine and inject animal protein foaming agent in slurry, be stirred, then turn Enter into molding equipment and carry out pouring molding, time control is transferred in 20min, later in 10 DEG C of temperature or more of natural conditions Lower maintenance can carry for the time 7 days or more, can form within 28 days finished product use.
Embodiment 2
Difference from example 1 is that:
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater Sludge 48%, cement 40%, animal protein foaming agent 6%, remaining is water.
Embodiment 3
Difference from example 1 is that:
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater Sludge 51%, cement 37%, animal protein foaming agent 7%, remaining is water.
Embodiment 4
Difference from example 1 is that:
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater Sludge 53%, cement 35%, animal protein foaming agent 7%, remaining is water.
Embodiment 5
Difference from example 1 is that:
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater Sludge 55%, cement 33%, animal protein foaming agent 7%, remaining is water.
Embodiment 6
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater Sludge 55%, cement 33%, animal protein foaming agent 7%, remaining is water.
The preparation method of the light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the steps of: will take off Sulphur wastewater sludge, cement sequentially add in container, closed, and 35r/min, which stirs 20min, under room temperature keeps it uniform, and then average rate adds Enter water after mixing evenly, obtain slurry, reuses foaming machine and inject animal protein foaming agent in slurry, be stirred, then turn Enter into molding equipment and carry out pouring molding, time control is transferred in 20min, later in 10 DEG C of temperature or more of natural conditions Lower maintenance can carry for the time 7 days or more, can form within 28 days finished product use.
Embodiment 7
A kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater Sludge 45%, cement 43%, animal protein foaming agent 5%, remaining is water.
The preparation method of the light flame-retardant wall body brick containing desulfurization wastewater sludge, comprises the steps of: will take off Sulphur wastewater sludge, cement sequentially add in container, closed, and 30r/min, which stirs 15min, under room temperature keeps it uniform, and then average rate adds Enter water after mixing evenly, obtain slurry, reuses foaming machine and inject animal protein foaming agent in slurry, be stirred, then turn Enter into molding equipment and carry out pouring molding, time control is transferred in 20min, later in 10 DEG C of temperature or more of natural conditions Lower maintenance can carry for the time 7 days or more, can form within 28 days finished product use.
To prove effect of the invention, physical property test test is carried out by taking the product of embodiment 1 to 5 as an example below:
1. control group is arranged: 4 control groups are arranged according to brick body material commonly used in the prior art, respectively control group 1(steams Pressing fly ash brick), control group 2(porous brick), control group 3(air-entrained concrete building block), control group 4(foamed concrete).
2. test group is arranged: being followed successively by test group 1-5 with the product of embodiment 1 to 5.
3. detection: detection method is carried out according to relevant national standard, testing result such as the following table 1, wherein in table 1, control Record of the related data of group 1 in JCT 239-2014, the related data of control group 2 is in GB 13544-2011 The record of sintered perforated brick and porous building-brick, steam pressurized coagulation of the related data of control group 3 in GB 11968-2006 The record of earth building blocks, the record of foam concrete of the related data of control group 4 in JGT 266-2011.
The testing result of 1 different tests group of table compares
Project Density kg/m3 Thermal coefficient w/ (mK) Compression strength MPa
Control group 1(autoclaved fly ash brick) 1400-1500 0.65 10-20
Control group 2(porous brick) 800-1200 0.58 3.5-30
Control group 3(air-entrained concrete building block) 500-600 0.16-0.28 1.0-10
4 foamed concrete of control group) 300-1200 0.19-0.22 0.3-0.5
Test group 1 740 0.17 0.65
Test group 2 737 0.17 0.63
Test group 3 732 0.16 0.58
Test group 4 730 0.16 0.57
Test group 5 730 0.16 0.58
As it can be seen from table 1 the density for the product that the embodiment of the present invention 1-4 is obtained is less than control group 1, control group 2, control group 3 density, and it is close with the density of control group 4, show that weight of the invention is close compared with prior art or relatively light;The present invention Thermal coefficient be approximately less than the thermal coefficient of control group 1-4, show that heat insulation effect of the invention is more preferable, flame retardant property is more preferable; Fire-retardant wall body brick is used as the wall inner lining or interior wall of not pressure-bearing, and compression strength requires lower.Raw material half of the invention The sludge generated from power plant desulfurization wastewater processing, almost without cost, and vention fully achieves waste resource recovery Target.
The above is optimization formula of the invention, it is noted that for those skilled in the art, the present invention is not It is restricted to the described embodiments, under the premise of not departing from general idea of the present invention, several changes of component ratio can also be made Change and improve, these also should be considered as protection scope of the present invention.

Claims (7)

1. a kind of light flame-retardant wall body brick containing desulfurization wastewater sludge, it is characterised in that: by the raw material of following weight percent Composition: desulfurization wastewater sludge 45-55%, cement 33-43%, animal protein foaming agent 5-7%, remaining is water.
2. the light flame-retardant wall body brick containing desulfurization wastewater sludge as described in claim 1, it is characterised in that: the desulfurization is useless Sewage sludge be Northern Part of China power plant desulfurization wastewater handle engineering generate sludge, wherein in solids magnesium hydroxide weight Than being greater than 60%, moisture percentage in sewage sludge 45-55%.
3. the light flame-retardant wall body brick containing desulfurization wastewater sludge as described in claim 1, it is characterised in that: the cement is Portland cement.
4. the light flame-retardant wall body brick containing desulfurization wastewater sludge as described in claim 1, it is characterised in that: the animal egg White hair infusion is animal hoof and foot foaming agent.
5. the preparation method of the light flame-retardant wall body brick according to any one of claims 1-4 containing desulfurization wastewater sludge, It is characterized in that: specific steps are as follows: desulfurization wastewater sludge, cement are sequentially added in container, it is closed, it is stirred evenly under room temperature, so Water is added after mixing evenly in average rate afterwards, obtains slurry, reuses foaming machine and injects animal protein foaming agent in slurry, is stirred It mixes, then is transferred into molding equipment and carries out pouring molding, be transferred to time control in 20min, carry out natural curing later to obtain the final product To light flame-retardant wall body brick finished product.
6. the preparation method of the light flame-retardant wall body brick containing desulfurization wastewater sludge as claimed in claim 5, it is characterised in that: The method of the natural curing specifically: got product after being conserved 28 days under the conditions of 10 DEG C of temperature or more of natural curing.
7. the preparation method of the light flame-retardant wall body brick containing desulfurization wastewater sludge as claimed in claim 5, it is characterised in that: The condition of the stirring are as follows: mixing time 10-20min, speed of agitator 25-35r/min.
CN201910819979.8A 2019-08-31 2019-08-31 A kind of light flame-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge Pending CN110357543A (en)

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Publication number Priority date Publication date Assignee Title
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CN101381212A (en) * 2008-10-24 2009-03-11 重庆大学 Sludge building material and preparation method thereof
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CN102643070A (en) * 2012-05-11 2012-08-22 同济大学 Ceramsite heat-preservation building block using non-calcined desulfurized gypsum as main cementing material and preparation method thereof
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CN101381212A (en) * 2008-10-24 2009-03-11 重庆大学 Sludge building material and preparation method thereof
CN101851086A (en) * 2010-03-26 2010-10-06 王爱瑞 Method for producing sludge self-insulation brick
CN102643070A (en) * 2012-05-11 2012-08-22 同济大学 Ceramsite heat-preservation building block using non-calcined desulfurized gypsum as main cementing material and preparation method thereof
KR20140131698A (en) * 2013-05-06 2014-11-14 박재석 The manufacturing method of block using industrial byproducts
CN106430794A (en) * 2016-12-20 2017-02-22 大唐国际化工技术研究院有限公司 Resourceful treatment method and treatment system for desulfuration wastewater

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