CN110357542A - A kind of fire-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge - Google Patents
A kind of fire-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge Download PDFInfo
- Publication number
- CN110357542A CN110357542A CN201910819978.3A CN201910819978A CN110357542A CN 110357542 A CN110357542 A CN 110357542A CN 201910819978 A CN201910819978 A CN 201910819978A CN 110357542 A CN110357542 A CN 110357542A
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- CN
- China
- Prior art keywords
- desulfurization wastewater
- wall body
- fire
- wastewater sludge
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The present invention discloses a kind of fire-retardant wall body brick and preparation method thereof containing desulfurization wastewater sludge, and comprise the following raw materials by weight percent: desulfurization wastewater sludge 50-60%, cement 35-45%, remaining is water.The sludge that the desulfurization wastewater sludge is generated using Northern Part of China power plant desulfurization wastewater processing engineering, wherein the weight ratio of magnesium hydroxide is greater than 60% in solids, moisture percentage in sewage sludge 50-60%.Compared with prior art, advantages of the present invention is as follows: desulfurization wastewater sludge is used to prepare fire-retardant wall body brick by 1. present invention, makes full use of waste resource, environmentally protective；2. in inventive formulation, what cement played the role of is the intensity of adhering and solidifying and reinforcing material；The magnesium hydroxide contained in desulfurization wastewater sludge is good fire proofing, can improve the flame retardant property of wall body brick.
Description
Technical field
The invention belongs to Environmental-protection recyclings and building materials manufacturing technology field, and in particular to a kind of containing desulfurization wastewater sludge
Fire-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 salinity high, aqueous
The characteristics such as rate is high, viscosity is big, volume is big, is not easy to be dehydrated, it is very unstable, it is largely water, magnesium hydroxide, sulfuric acid in constituent
Calcium, coal ash, aluminium-silicon oxide and a small amount of heavy metal hydroxide etc..If improper to Treatment of Sludge, not only environment can be produced
Raw pollution, can also cause serious injury the health of people.
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, develops a kind of more simple and effective resource
The method of change 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 fire-retardant wall body brick.
To achieve the above object, the solution of the present invention is as follows:
A kind of fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater sludge
50-60%, cement 35-45%, remaining is water.
The sludge that the desulfurization wastewater sludge is generated using Northern Part of China power plant desulfurization wastewater processing engineering, wherein solid
The weight ratio of magnesium hydroxide is greater than 60% in body object, moisture percentage in sewage sludge 50-60%.
The cement uses ordinary portland cement.
The preparation method of the fire-retardant wall body brick containing desulfurization wastewater sludge, successively by desulfurization wastewater sludge, cement
It is added to the container, is stirred evenly under room temperature, then average rate is added water and is stirred, and after mixing evenly, is transferred into molding equipment
Forming processes are carried out, are transferred to time control in 60min, carry out natural curing later to get fire-retardant wall body brick finished product is arrived.
In the stirring, speed of agitator 25-35r/min, mixing time 10-20min.
The maintenance refers to be conserved under 10 DEG C of temperature or more of natural conditions, and maintenance obtains flame-retardant wall body after 28 days
Brick finished product.
Compared with prior art, advantages of the present invention is as follows:
1. desulfurization wastewater sludge is used to prepare fire-retardant wall body brick by the present invention, waste resource is made full use of, it is environmentally protective；
2. in inventive formulation, what cement played the role of is the intensity of adhering and solidifying and reinforcing material；In desulfurization wastewater sludge
The magnesium hydroxide contained is good fire proofing, can improve the flame retardant property of wall body brick.
Specific embodiment
A kind of fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater
Sludge 50-60%, cement 35-45%, remaining is water.
The sludge that the desulfurization wastewater sludge is generated using Northern Part of China power plant desulfurization wastewater processing engineering, wherein solid
The weight ratio of magnesium hydroxide is greater than 60% in body object, moisture percentage in sewage sludge 50-60%.
The cement uses ordinary portland cement.
The preparation method of the fire-retardant wall body brick containing desulfurization wastewater sludge, successively by desulfurization wastewater sludge, cement
It is added to the container, is stirred evenly under room temperature, then average rate is added water and is stirred, and after mixing evenly, is transferred into molding equipment
Forming processes are carried out, are transferred to time control in 60min, carry out natural curing later to get fire-retardant wall body brick finished product is arrived.
In the stirring, speed of agitator 25-35r/min, mixing time 10-20min.
The maintenance refers to be conserved under 10 DEG C of temperature or more of natural conditions, and maintenance obtains flame-retardant wall body after 28 days
Brick finished product.
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 fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater sludge
50%, cement 45%, remaining is water.
The preparation method of the fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the steps of: desulfurization is given up
Sewage sludge, cement sequentially add in container, and 30r/min, which stirs 15min, under room temperature makes it uniformly, and then average rate addition water is stirred
It mixes, after mixing evenly, is transferred into molding equipment and carries out forming processes, time control is transferred in 60min, later in temperature 10
DEG C or more natural conditions under conserve, maintenance after 28 days to get arrive fire-retardant wall body brick finished product.
Embodiment 2
Difference from example 1 is that:
A kind of fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater sludge
53%, cement 42%, remaining is water.
Embodiment 3
Difference from example 1 is that:
A kind of fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater sludge
55%, cement 40%, remaining is water.
Embodiment 4
Difference from example 1 is that:
A kind of fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater sludge
58%, cement 37%, remaining is water.
Embodiment 5
Difference from example 1 is that:
A kind of fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater sludge
60%, cement 35%, remaining is water.
Embodiment 6
A kind of fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater sludge
60%, cement 35%, remaining is water.
The preparation method of the fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the steps of: desulfurization is given up
Sewage sludge, cement sequentially add in container, and 25r/min, which stirs 20min, under room temperature makes it uniformly, and then average rate addition water is stirred
It mixes, after mixing evenly, is transferred into molding equipment and carries out forming processes, time control is transferred in 60min, later in temperature 10
DEG C or more natural conditions under conserve, maintenance after 28 days to get arrive fire-retardant wall body brick finished product.
Embodiment 7
A kind of fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the following raw materials by weight percent: desulfurization wastewater sludge
50%, cement 45%, remaining is water.
The preparation method of the fire-retardant wall body brick containing desulfurization wastewater sludge, comprises the steps of: desulfurization is given up
Sewage sludge, cement sequentially add in container, and 35r/min, which stirs 10min, under room temperature makes it uniformly, and then average rate addition water is stirred
It mixes, after mixing evenly, is transferred into molding equipment and carries out forming processes, time control is transferred in 60min, later in temperature 10
DEG C or more natural conditions under conserve, maintenance after 28 days to get arrive fire-retardant wall body brick finished product.
For proof effect of the invention, quantitative measurement is carried out by taking the product of embodiment 1 to 5 as an example below:
1. control group is arranged: 2 control groups are arranged according to brick body material commonly used in the prior art, respectively control group 1(is more
Hole brick), control group 2(autoclaved fly ash brick).
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
The record of sintered perforated brick and porous building-brick of the related data of group 1 in GB 13544-2011, the dependency number of control group 2
According to the record in JCT 239-2014.
The testing result of 1 different tests group of table compares
| Test group | Density kg/m3 | Thermal coefficient w/ (mK) | Compression strength MPa |
| Control group 1(porous brick) | 800-1200 | 0.58 | 3.5-30 |
| Control group 2(autoclaved fly ash brick) | 1400-1500 | 0.65 | 10-20 |
| Test group 1 | 1334 | 0.47 | 11 |
| Test group 2 | 1336 | 0.47 | 11 |
| Test group 3 | 1330 | 0.46 | 11 |
| Test group 4 | 1330 | 0.46 | 11 |
| Test group 5 | 1290 | 0.46 | 11 |
As it can be seen from table 1 the density for the product that the embodiment of the present invention 1-5 is obtained, thermal coefficient, compression strength with compare
The relevant parameter of group 1-2 is close or more excellent, this illustrates that product of the invention can be acceptable to the market completely, and former material of the invention
Expect the sludge that half is generated from power plant desulfurization wastewater processing, almost without cost, and vention fully achieves wastes
The target of recycling.
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 (6)
1. a kind of fire-retardant wall body brick containing desulfurization wastewater sludge, it is characterised in that: comprise the following raw materials by weight percent:
Desulfurization wastewater sludge 50-60%, cement 35-45%, remaining is water.
2. as described in claim 1 containing the fire-retardant wall body brick of desulfurization wastewater sludge, it is characterised in that: the desulfurization wastewater is dirty
Mud using Northern Part of China power plant desulfurization wastewater processing engineering generate sludge, wherein in solids magnesium hydroxide weight ratio
Greater than 60%, moisture percentage in sewage sludge 50-60%.
3. as described in claim 1 containing the fire-retardant wall body brick of desulfurization wastewater sludge, it is characterised in that: the cement is using general
Logical portland cement.
4. the preparation method of the fire-retardant wall body brick as described in any one of claims 1-3 containing desulfurization wastewater sludge, feature
It is: desulfurization wastewater sludge, cement is sequentially added in container, is stirred evenly under room temperature, then average rate is added water and is stirred,
After mixing evenly, it is transferred into molding equipment and carries out forming processes, be transferred to time control in 60min, carry out nature later and support
It protects to get fire-retardant wall body brick finished product is arrived.
5. the preparation method of the fire-retardant wall body brick containing desulfurization wastewater sludge as claimed in claim 4, it is characterised in that: described
In stirring, speed of agitator 25-35r/min, mixing time 10-20min.
6. the preparation method of light flame-retardant diatomite brick as claimed in claim 4, it is characterised in that: the maintenance refers in temperature
It is conserved under the natural conditions of 10 DEG C of degree or more, maintenance obtains flame-retardant wall body brick finished product after 28 days.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910819978.3A CN110357542B (en) | 2019-08-31 | 2019-08-31 | Flame-retardant wall brick containing desulfurization wastewater sludge and preparation method thereof |
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| CN201910819978.3A CN110357542B (en) | 2019-08-31 | 2019-08-31 | Flame-retardant wall brick containing desulfurization wastewater sludge and preparation method thereof |
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| CN110357542A true CN110357542A (en) | 2019-10-22 |
| CN110357542B CN110357542B (en) | 2021-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963768A (en) * | 2019-12-31 | 2020-04-07 | 郑州恒博环境科技股份有限公司 | Brick containing aluminum processing solid waste and preparation method thereof |
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| CN110357542B (en) | 2021-12-07 |
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