CN106467386B - A kind of electroplating sludge cement brick and preparation method thereof - Google Patents
A kind of electroplating sludge cement brick and preparation method thereof Download PDFInfo
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- CN106467386B CN106467386B CN201610826416.8A CN201610826416A CN106467386B CN 106467386 B CN106467386 B CN 106467386B CN 201610826416 A CN201610826416 A CN 201610826416A CN 106467386 B CN106467386 B CN 106467386B
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- electroplating sludge
- cement brick
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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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of electroplating sludge cement brick and preparation method thereof, which includes the raw material of following mass parts: 100 parts of cement；10~80 parts of electroplated heavy metals sludge；5~40 parts of river sands；1~18 part of activated alumina；1~16 part of sodium metasilicate；The water of 0.5~10 part of ordered mesoporous carbon, 0.5~10 part of dithiocarbamate salt derivative and 1.2-1.5 times of solid gross mass number.1) the cement brick preparation method is the following steps are included: carry out acid-base neutralization processing and break process to electroplated heavy metals sludge；2) raw material is uniformly mixed in proportion, is added water and stirred, compression moulding obtains adobe；3) adobe is aged, then spontaneously dried, obtain electroplating sludge cement brick.Electroplating sludge cement brick excellent in mechanical performance of the invention, intensity are high, and heavy metal free Ion release, safety and environmental protection is used for a long time；Method of the invention is simple and efficient, and is not needed to be fired adobe, is reduced energy consumption, reduces production cost.
Description
Technical field
The present invention relates to a kind of electroplating sludge cement bricks and preparation method thereof.
Background technique
Electroplating sludge be electroplating industry various electroplating effluents and cell liquid pass through liquid phase chemical handle after caused by
Solid waste causes the chemical component of electroplating sludge quite multiple since the production technology and treatment process of each plating producer are different
It is miscellaneous, the heavy metal compounds such as cadmium, mercury, lead, chromium, arsenic, nickel, zinc, copper are mainly contained, pathogen, parasitic ovum, organic dirt are also contained
The poisonous and harmful substances such as object are contaminated, one of dangerous solid waste of national regulation is belonged to.
Effective processing technique is all actively being found by governments at all levels and relevant department, mainly uses following several methods at present
Electroplating sludge is handled: 1) electroplating sludge being handled by landfill, to reduce the pollution to environment, but electroplating sludge
Comparison of ingredients it is complicated, moisture content is high, and especially content of beary metal is high, belongs to high pollution danger solid waste, directly landfill
Meeting contaminated soil and groundwater resources, are easy to produce secondary pollution, cause to seriously endanger to environment；2) heavy metal recovery factory is established
Heavy metal recovery is carried out, is used although this method can recycle the part heavy metal recovery of electroplating sludge, heavy metal
Reclaims factory investment is big, at high cost, and not exclusively, the waste residue of generation still needs to carry out subsequent there are also the possibility for polluting environment again for recycling
Secondary processing；3) production sludge brick prepares building brick, but existing brick-making technology curing degree directly using electroplating sludge as raw material
Low, heavy metal can be released gradually, still can endanger environment and personal safety, and some process requirements carry out high temperature firing, consumption
Can it is more, pollute that air, brick quality are irregular, and yield rate is low.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of electroplating sludge cement bricks and preparation method thereof.
The technical solution used in the present invention is:
A kind of electroplating sludge cement brick, the raw material including following mass fraction:
100 parts of cement；10~80 parts of electroplated heavy metals sludge；5~40 parts of river sands；1~18 part of activated alumina；1~16
Part sodium metasilicate；0.5~10 part of ordered mesoporous carbon, 0.5~10 part of dithiocarbamate salt derivative and 1.2-1.5 times are solid
The water of body gross mass number.
Further, the cement is portland cement, and the dithiocarbamate salt derivative is γ-ammonia third
Ylmethyl dimethoxysilane, N- β-aminoethyl-γ-aminopropyltriethoxy dimethoxysilane, γ-divinyl triammonium hydroxypropyl methyl
One of dimethoxysilane, polyethyleneimine dithiocar-bamate, two thio divinyl triammonium base sodium formates are more
Kind.
Further, the dithiocarbamate salt derivative be γ-aminopropyltriethoxy dimethoxysilane and
N- β-aminoethyl-γ-aminopropyltriethoxy dimethoxysilane.
Further, the moisture content of the electroplated heavy metals sludge is 15%~45%.
Further, the partial size of the river sand is less than 0.15mm.
Further, the partial size of the activated alumina is 0.514nm~0.6nm.
The preparation method of above-mentioned electroplating sludge cement brick, which comprises the following steps:
(1) acid-base neutralization processing and break process are carried out to electroplated heavy metals sludge；
(2) by cement, electroplated heavy metals sludge, river sand, activated alumina, sodium metasilicate, ordered mesoporous carbon and two thio amine
Base formiate derivative is uniformly mixed, and the water stirring of 1.2-1.5 times of solid gross mass number is added, and compression moulding obtains
To adobe；
(3) adobe is aged, then spontaneously dried, obtain electroplating sludge cement brick.
Further, partial size is less than 2mm after the electroplated heavy metals sludge carries out break process.
Further, the briquetting pressure of compression moulding is 20~30MPa in the step (2).
Further, the time being aged in the step (3) is 20~30 hours, and the time of natural drying is 1~2 day.
The beneficial effects of the present invention are:
1) harmful substance is sealed in sclerotic tissue by cement solidification, passes through calcium silicates aquation powdered in cement
Object colloid carries out absorption to harmful substance and forms solid solution, is fettered；
2) by metal-chelator-dithiocarbamates derivative (DTC) in conjunction with metal ion, by metal from
Attached bag is closed to inside chelating agent, becomes stable, the bigger compound of molecular weight；
3) cohesion and Complex effect are reinforced by activated alumina and ordered mesoporous carbon, solidify heavy metal for a long time,
It is not easy can be discharged into environment；
4) electroplating sludge cement brick excellent in mechanical performance of the invention, intensity are high, and heavy metal free Ion release is used for a long time,
Safety and environmental protection；
5) method of the invention is simple and efficient, and is not needed to be fired adobe, is reduced energy consumption, reduces and be produced into
This.
Specific embodiment
A kind of electroplating sludge cement brick, the raw material including following mass fraction:
100 parts of cement；10~80 parts of electroplated heavy metals sludge；5~40 parts of river sands；1~18 part of activated alumina；1~16
Part sodium metasilicate；0.5~10 part of ordered mesoporous carbon, 0.5~10 part of dithiocarbamate salt derivative and 1.2-1.5 times are solid
The water of body gross mass number.
Further, the cement is portland cement, and the dithiocarbamate salt derivative is γ-ammonia third
Ylmethyl dimethoxysilane, N- β-aminoethyl-γ-aminopropyltriethoxy dimethoxysilane, γ-divinyl triammonium hydroxypropyl methyl
One of dimethoxysilane, polyethyleneimine dithiocar-bamate, two thio divinyl triammonium base sodium formates are more
Kind.
Further, the dithiocarbamate salt derivative be γ-aminopropyltriethoxy dimethoxysilane and
N- β-aminoethyl-γ-aminopropyltriethoxy dimethoxysilane.
Further, the moisture content of the electroplated heavy metals sludge is 15%~45%.
Further, the partial size of the river sand is less than 0.15mm.
Further, the partial size of the activated alumina is 0.514nm~0.6nm.
The preparation method of above-mentioned electroplating sludge cement brick, which comprises the following steps:
(1) acid-base neutralization processing and break process are carried out to electroplated heavy metals sludge；
(2) by cement, electroplated heavy metals sludge, river sand, activated alumina, sodium metasilicate, ordered mesoporous carbon and two thio amine
Base formiate derivative is uniformly mixed, and the water stirring of 1.2-1.5 times of solid gross mass number is added, and compression moulding obtains
To adobe；
(3) adobe is aged, then spontaneously dried, obtain electroplating sludge cement brick.
Further, partial size is less than 2mm after the electroplated heavy metals sludge carries out break process.
Further, the briquetting pressure of compression moulding is 20~30MPa in the step (2).
Further, the time being aged in the step (3) is 20~30 hours, and the time of natural drying is 1~2 day.
The present invention is got information about to allow those skilled in the art to be more clear, it below will be by embodiment 1-8 to this
Invention is further described, and DTC is γ-aminopropyltriethoxy dimethoxysilane and N- β-aminoethyl-γ-in embodiment 1-8
The equal mass mixings object of aminopropyltriethoxy dimethoxysilane.
Embodiment 1:
The electroplating sludge cement brick of the present embodiment, solid material composition as shown in table 1, when preparation water add 1.5 times it is solid
The water of body gross mass number.
Table 1
| Cement | Electroplated heavy metals sludge | River sand | Activated alumina | Sodium metasilicate | Ordered mesoporous carbon | DTC |
| 100 parts | 80 parts | 40 parts | 18 parts | 16 parts | 10 parts | 10 parts |
Embodiment 2:
The electroplating sludge cement brick of the present embodiment, solid material composition as shown in table 2, when preparation water add 1.5 times it is solid
The water of body gross mass number.
Table 2
| Cement | Electroplated heavy metals sludge | River sand | Activated alumina | Sodium metasilicate | Ordered mesoporous carbon | DTC |
| 100 parts | 70 parts | 38 parts | 15 parts | 15 parts | 8 parts | 8 parts |
Embodiment 3:
The electroplating sludge cement brick of the present embodiment, solid material composition as shown in table 3, when preparation water add 1.4 times it is solid
The water of body gross mass number.
Table 3
| Cement | Electroplated heavy metals sludge | River sand | Activated alumina | Sodium metasilicate | Ordered mesoporous carbon | DTC |
| 100 parts | 60 parts | 35 parts | 14 parts | 12 parts | 6 parts | 6 parts |
Embodiment 4:
The electroplating sludge cement brick of the present embodiment, solid material composition as shown in table 4, when preparation water add 1.4 times it is solid
The water of body gross mass number.
Table 4
| Cement | Electroplated heavy metals sludge | River sand | Activated alumina | Sodium metasilicate | Ordered mesoporous carbon | DTC |
| 100 parts | 50 parts | 20 parts | 10 parts | 10 parts | 5 parts | 5 parts |
Embodiment 5:
The electroplating sludge cement brick of the present embodiment, solid material composition as shown in table 5, when preparation water add 1.3 times it is solid
The water of body gross mass number.
Table 5
| Cement | Electroplated heavy metals sludge | River sand | Activated alumina | Sodium metasilicate | Ordered mesoporous carbon | DTC |
| 100 parts | 40 parts | 15 parts | 8 parts | 9 parts | 4 parts | 4 parts |
Embodiment 6:
The electroplating sludge cement brick of the present embodiment, solid material composition as shown in table 6, when preparation water add 1.3 times it is solid
The water of body gross mass number.
Table 6
| Cement | Electroplated heavy metals sludge | River sand | Activated alumina | Sodium metasilicate | Ordered mesoporous carbon | DTC |
| 100 parts | 30 parts | 10 parts | 7 parts | 7 parts | 3 parts | 3 parts |
Embodiment 7:
The electroplating sludge cement brick of the present embodiment, solid material composition as shown in table 7, when preparation water add 1.2 times it is solid
The water of body gross mass number.
Table 7
| Cement | Electroplated heavy metals sludge | River sand | Activated alumina | Sodium metasilicate | Ordered mesoporous carbon | DTC |
| 100 parts | 20 parts | 8 parts | 5 parts | 5 parts | 1 part | 1 part |
Embodiment 8:
The electroplating sludge cement brick of the present embodiment, solid material composition as shown in table 8, when preparation water add 1.2 times it is solid
The water of body gross mass number.
Table 8
| Cement | Electroplated heavy metals sludge | River sand | Activated alumina | Sodium metasilicate | Ordered mesoporous carbon | DTC |
| 100 parts | 10 parts | 5 parts | 1 part | 1 part | 0.5 part | 0.5 part |
Test case:
Heavy metal analysis (examination criteria and the sides such as lead, chromium, arsenic are carried out to the electroplating sludge cement brick of Examples 1 to 8 preparation
Method: GB/T5750.6-2006), testing result is as shown in table 9.
Table 9
As shown in Table 9: electroplating sludge is before and after the processing from the point of view of the testing result of heavy metal, lead in the sample of embodiment 1-8,
Chromium, arsenic the detection level of water logging aqueous solution be remarkably decreased compared with the sample before processing, it was demonstrated that treated for formula of the invention
Electroplating sludge can achieve environmental requirement substantially.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (9)
1. a kind of electroplating sludge cement brick, which is characterized in that the raw material including following mass fraction:
100 parts of cement；10 ~ 80 parts of electroplated heavy metals sludge；5 ~ 40 parts of river sands；1 ~ 18 part of activated alumina；1 ~ 16 part of sodium metasilicate；
0.5 ~ 10 part of ordered mesoporous carbon, 0.5 ~ 10 part of dithiocarbamate salt derivative and 1.2-1.5 times of solid gross mass part
Several water.
2. electroplating sludge cement brick according to claim 1, which is characterized in that the cement is portland cement, described
Dithiocarbamate salt derivative be γ-aminopropyltriethoxy dimethoxysilane, N- β-aminoethyl-γ-aminopropyl first
Base dimethoxysilane, γ-divinyl triammonium hydroxypropyl methyl dimethoxysilane, polyethyleneimine dithiocar-bamate,
One of two thio divinyl triammonium base sodium formates are a variety of.
3. electroplating sludge cement brick according to claim 2, which is characterized in that the dithiocarbamate salt spreads out
Biology is γ-aminopropyltriethoxy dimethoxysilane and N- β-aminoethyl-γ-aminopropyltriethoxy dimethoxysilane.
4. electroplating sludge cement brick according to claim 1, which is characterized in that the moisture content of the electroplated heavy metals sludge
It is 15% ~ 45%.
5. electroplating sludge cement brick according to claim 1, which is characterized in that the partial size of the river sand is less than 0.15 mm.
6. the preparation method of electroplating sludge cement brick described in any one of claim 1 ~ 5, which is characterized in that including following
Step:
(1) acid-base neutralization processing and break process are carried out to electroplated heavy metals sludge；
(2) by cement, electroplated heavy metals sludge, river sand, activated alumina, sodium metasilicate, ordered mesoporous carbon and two thioamido first
Hydrochlorate analog derivative is uniformly mixed, and the water stirring of 1.2-1.5 times of solid gross mass number is added, and compression moulding obtains brick
Base；
(3) adobe is aged, then spontaneously dried, obtain electroplating sludge cement brick.
7. the preparation method of electroplating sludge cement brick according to claim 6, which is characterized in that the electroplated heavy metals are dirty
Partial size is less than 2mm after mud carries out break process.
8. the preparation method of electroplating sludge cement brick according to claim 6, which is characterized in that pressure in the step (2)
Making molding briquetting pressure is 20 ~ 30MPa.
9. the preparation method of electroplating sludge cement brick according to claim 6, which is characterized in that old in the step (3)
The time of change is 20 ~ 30 hours, and the time of natural drying is 1 ~ 2 day.
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| CN201610826416.8A CN106467386B (en) | 2016-09-14 | 2016-09-14 | A kind of electroplating sludge cement brick and preparation method thereof |
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| CN201610826416.8A CN106467386B (en) | 2016-09-14 | 2016-09-14 | A kind of electroplating sludge cement brick and preparation method thereof |
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| CN106467386B true CN106467386B (en) | 2019-01-11 |
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| CN109400035B (en) * | 2018-11-06 | 2021-08-13 | 泰州华昊废金属综合利用有限公司 | Method for preparing concrete brick by utilizing metal surface treatment waste |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812888A (en) * | 2010-03-09 | 2010-08-25 | 上海师范大学 | Concrete brick containing sludge burning ash residue |
| CN103193504A (en) * | 2013-03-10 | 2013-07-10 | 海拉建材科技大丰有限公司 | Processing technology of water treatment sludge self-insulation brick |
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2016
- 2016-09-14 CN CN201610826416.8A patent/CN106467386B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101812888A (en) * | 2010-03-09 | 2010-08-25 | 上海师范大学 | Concrete brick containing sludge burning ash residue |
| CN103193504A (en) * | 2013-03-10 | 2013-07-10 | 海拉建材科技大丰有限公司 | Processing technology of water treatment sludge self-insulation brick |
Non-Patent Citations (1)
| Title |
|---|
| "电镀污泥制砖试验研究";聂鑫淼等;《污染防治技术》;20061231;第19卷(第6期);第20-22页 |
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