CN107056156A - A kind of method that utilization microbial mineralization processing copper ashes prepares building materials - Google Patents
A kind of method that utilization microbial mineralization processing copper ashes prepares building materials Download PDFInfo
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- CN107056156A CN107056156A CN201710275423.8A CN201710275423A CN107056156A CN 107056156 A CN107056156 A CN 107056156A CN 201710275423 A CN201710275423 A CN 201710275423A CN 107056156 A CN107056156 A CN 107056156A
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- copper ashes
- building materials
- slag
- microbial
- utilization
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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
- C04B28/005—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 gelatineous or gel forming binders, e.g. gelatineous Al(OH)3, sol-gel binders
-
- 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)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses the method that a kind of utilization microbial mineralization processing copper ashes prepares building materials, this method comprises the following steps：1) copper ashes, slag and lime are mixed evenly and obtain composite gelled material, slag is used to reduce bleeding, and lime is used to provide calcium source；2) poured into composite gelled material in agitated kettle, the aqueous solution of microbial germ powder, sand are added afterwards and slurry is stirred into, shaping of vibrating afterwards obtains test specimen；3) sample is obtained after the test specimen demoulding, sample is obtained to the building materials after maintenance afterwards.The method that the present invention is provided is using copper ashes as primary raw material, using microbial mineralization as method, realize effective utilization to copper ashes the like waste, have preparation technology simple simultaneously, energy consumption is low, advantages of environment protection, while building materials prepared by this method have certain mechanical strength, the building materials mechanical property for mixing slag is obviously improved compared with fine copper slag building materials.
Description
Technical field
The present invention relates to the method that a kind of utilization microbial mineralization processing copper ashes prepares building materials, belong to environmentally conscious materialses science neck
Domain.
Background technology
Copper ashes is mainly what is produced in copper concentrate matte smelting process, and main copper metallurgy technique is to make sulfonium to melt in the world at present
Refining technology.The technique is under the conditions of 1150~1250 DEG C of high temperature oxidative atmosphere, the copper in copper concentrate is enriched to as far as possible
In copper matte regulus, the ferriferous oxide and gangue of association are enriched in clinker in copper concentrate.Therefore, often containing high-grade in copper ashes
Iron, these iron are main to be existed in the form of ferrous oxide, content 25%~30%, iron content it is too high so that copper ashes often by with
To reclaim the metals such as iron；But the metals such as receipts iron for a long time, are only close to so that the degree of copper ashes recycling is still short of, largely
Copper ashes stacked in slag, be both a kind of wasting of resources, many harm will certainly be also caused to resident living environment, are such as taken
Soil, pollutes air and water source etc..Comprehensive analysis copper ashes, finds its mineral facies predominantly glassy state, can pass through certain alkali
Exciting activates active material therein, but also because activity is inadequate, come the building materials system of progress by way of mixing other ground-slags outside
The preparation of product, the mechanical property of product is lifted finally by the mineralization of microorganism under given conditions.
This technique is used extracts certain microorganism from nature, give its fully suitable existence, breeding and
The condition of activation, by giving enough calcium sources and lifting CO2Concentration, it is anti-that its carbonic anhydrase secreted characteristically accelerates carbonization
Process is answered, product is faster obtained mechanical property.
The technology is one and utilizes solid waste copper ashes, and the advanced technology with carbon sequestration characteristic, is comprehensive utilization copper ashes etc.
The effective ways of solid waste, only copper ashes does not utilize in building materials field and provides a kind of new approach, and the technology also can be in certain journey
Absorbed on degree and store greenhouse gases, and with processing time is short, technique is simple, it is environment-friendly the features such as, possess good
Economic and social profit.
The content of the invention
Technical problem：It is an object of the invention to provide the method that a kind of utilization microbial mineralization processing copper ashes prepares building materials,
This method has that technique is simple, effect is notable, energy resource consumption is low, advantages of environment protection, is that copper ashes is used in building materials field
It is effective to solve the problem of copper ashes utilization rate is not enough there is provided technical support approach.
Technical scheme：The invention provides the method that a kind of microbial mineralization processing copper ashes prepares building materials, this method includes
Following steps：
1) copper ashes, slag and lime are mixed evenly and obtain composite gelled material, wherein slag is used to reduce bleeding,
Lime is used to provide calcium source；
2) composite gelled material is poured into agitated kettle, the aqueous solution that microbial germ powder is added afterwards continues to stir to equal
It is even, it is subsequently added sand and is stirred into slurry, slurry is poured into mould shaping of vibrating afterwards, test specimen is obtained；
3) by step 2) to be placed in relative humidity be maintenance in the environment that 60% ± 3%, temperature is 20 ± 2 DEG C for obtained test specimen
The demoulding obtains sample, and it is maintenance, Zhi Houzai in the standard chamber that more than 95%, temperature is 20 ± 2 DEG C that sample is placed in into relative humidity
Sample is put into autoclave pressure, the utilization microbial mineralization processing copper ashes is obtained after being conserved through carbon and is prepared into building materials.
Wherein：
The mass ratio of described copper ashes and the gross mass of slag and lime is 7:3, the mass ratio of wherein copper ashes and slag is
1:1~5:1；The microbial germ powder refers to that the microbial germ powder of carbonic anhydrase can be produced, and its volume is composite gelled material quality
1%~2%；The aqueous solution reclaimed water of the microbial germ powder and the mass ratio of composite gelled material are 0.4~0.6, compound adhesive
The mass ratio of gel material and sand is 1:2~1:3.
Described microbial germ powder is colloid bacillus cereus.
Step 3) described in the maintenance demoulding refer in relative humidity be the environment that 60% ± 3%, temperature is 20 ± 2 DEG C it is foster
Protect after 1~2d and be stripped, obtain sample；The described when a length of 2~3d conserved in standard chamber.
Step 3) described in carbon maintenance refer in CO2Volume fraction be 15%~50%, environment temperature be 22 DEG C~25 DEG C,
1~3d is conserved under conditions of relative humidity 40%~80%, or in relative humidity 70% ± 3%, CO2Pressure be 0.1~
4~6h is conserved under conditions of 0.3MPa.
The size of the test specimen is 160mm × 40mm × 40mm.
In the building materials preparation process, after the microbial germ powder for adding production carbonic anhydrase, pass through the carbonic acid of microorganism secretion
Acid anhydride enzyme, can specifically lifting prepare the speed that carbon sequestration is reacted during building materials, the mineralization of microorganism in itself can be obviously improved
The mechanical property of the building materials；On the other hand, correlative study shows that microbial mineralization can consolidate the heavy metal of free state in waste residue.
It is described in certain C O2Under pressure in maintenance processes, carbonic acid inha enzyme can absorb, convert CO2It is and multiple for carbonate
Close the Ca in cementitious material system2+Generate CaCO3, the hole of the building materials is filled, optimizes pore structure, makes the mechanical property of building materials
It is obviously improved.
Beneficial effect：Compared with prior art, the present invention has advantages below：
1st, the present invention prepares building material product by primary raw material of solid wastes such as melting waste slag copper ashes, slags, turns waste into wealth,
It is effective to realize effective utilization to solid waste, land seizure and problem of environmental pollution are reduced, is that the use of copper ashes is carried
New thinking has been supplied, the downstream industry of copper smelting industrial chain is added, with good economic, ecological and environmental benefit, effect shows
Write.
2nd, the method that the copper ashes and slag used in the present invention is combined, mainly uses the easy aquation of slag, and aquation is molten
Liquid is alkalescence, can be very good to provide alkaline environment for the dissolving of vitreum in copper ashes；In addition it is to supplement calcium using lime
Source, makes have enough calcium ions to generate calcium carbonate after microbial mineralization in product, compact article hole, energy resource consumption is low.
3rd, the microbial mineralization method that uses of the present invention, with it is simple, efficient the characteristics of；On the one hand harsh carbon is not needed
Change condition, energy-conserving and environment-protective；On the other hand, carbonation reaction can be substantially speeded up, shortens production life cycle, more good warp is produced
Ji property.Meanwhile, preparation process adds effective capture to carbon dioxide, slows down greenhouse effects.
Brief description of the drawings
Fig. 1 copper ashes mineralogical composition is analyzed；
Fig. 2 flow sheets；
The mechanical property comparison diagram of product under the conditions of Fig. 3 different ratios, different mineralisings, wherein SC represents common carbonization, h tables
Show hour, d represents day, and M corresponds to MPa.
Embodiment
Microorganism fungus kind colloid bacillus cereus of the present invention derives from Chinese industrial Culture Collection,
The strain is 20666 in platform numbering.
The method that the present invention prepares copper ashes carbonization product using microbial mineralization effect, method and step is as follows：
(1) mineralogical composition analysis is carried out to copper ashes, copper ashes, slag and lime is mixed into plural gel material by a certain percentage
Material.
(2) specimen molding：The mixture of a certain amount of copper ashes, slag and lime is poured into agitated kettle, bacterium powder, which is dissolved in, to be needed
The water of addition is simultaneously added in agitated kettle, is stirred until homogeneous, and continues to stir after adding sand, slurry is poured into and vibrated into mould
Type, obtains test piece mould as shown in Figure 2.
(3) test specimen is placed in relative humidity 60% ± 3%, the environment of 20 ± 2 DEG C of temperature to conserve to be stripped after 1~2d and obtained
Sample, 2~3d of maintenance in relative humidity more than 95%, the standard chamber of 20 ± 2 DEG C of temperature is placed in by sample；Then supported in different carbon
Oxidation of coal mineralising is carried out under the conditions of shield.By means of in specific CO2Under pressure curing condition, carbonic acid inha enzyme can absorb, convert
CO2For the Ca in carbonate, with composite gelled material system2+Into CaCO3, the hole of building materials is filled, optimizes pore structure, not
Mechanical property with different ratio building materials under Carbonization Conditions is contrasted as shown in Figure 3, and building materials mechanical property is with steel as figure shows
Slag volume increases and gradually increased, while the mineralising time needed for mineralising of pressurizeing reaches identical mechanical property is more commonly carbonized less.
Generally speaking, the method has the advantages that cost is low, technological process is simple, effect is notable, environment-friendly.
Example 1：
(1) copper ashes, slag and lime are mixed into complex cementitious system, fixed cement mortar rate in the ratios numbered of B1 in table 1
For 1:2, water-cement ratio is 0.5, and microbial germ powder volume is 1.5%；
(2) 450g composite gelled materials are poured into after being stirred in agitated kettle, bacterium powder is added in 225g water and stirs equal
After even, import in agitated kettle and stir, be subsequently added sand and persistently stir, slurry is poured into and vibrated into mould
Type, obtains test specimen.
(3) test specimen is placed in relative humidity 57%, the environment that 18 DEG C of temperature and conserved, the demoulding obtains sample after 1d, will try
Sample is placed in relative humidity 95%, the standard chamber that 18 DEG C of temperature and conserved 3 days, then in common carbonization environment (CO2Volume fraction is
15%th, environment temperature is 25 DEG C, relative humidity 40%) carbon maintenance 1d under normal pressure, obtain the utilization microbial mineralization processing copper
Slag is prepared into building materials.
(4) intensity of copper ashes carbonization product is prepared using microbial mineralization under already close to 10MPa, while finding it
, can be for the colored building material of preparation with absinthe-green feature.The method can effectively handle copper ashes the like waste, together
When have preparation technology simple, with short production cycle, energy consumption is low, advantages of environment protection.
The different conservation system designs of 1 copper ashes of table-slag compounding product
Embodiment 2：
(1) copper ashes, slag and lime are mixed into complex cementitious system, fixed cement mortar rate in the ratios numbered of C1 in table 1
For 1:3, water-cement ratio is 0.5, and microbial germ powder volume is 1%；
(2) 450g composite gelled materials are poured into after being stirred in agitated kettle, bacterium powder is added in 225g water and stirs equal
After even, import in agitated kettle and stir.It is subsequently added sand and persistently stirs, slurry is poured into and vibrated into mould
Type, obtains test specimen.
(3) test specimen is placed in relative humidity 60, the environment that 20 DEG C of temperature and conserved, the demoulding obtains sample after 2d, by sample
Be placed in relative humidity 96%, the standard chamber that 20 DEG C of temperature conserve 2 days, then high pressure carbonization environment (humidity be 67%,
CO2Pressure is under the conditions of 0.1MPa) carbon maintenance 6h, obtain the utilization microbial mineralization processing copper ashes and be prepared into building materials.
Embodiment 3：
(1) copper ashes, slag and lime are mixed into complex cementitious system, wherein copper ashes in the ratio of B2 in table 1：Slag
Mass ratio is 5:1, i.e. copper ashes 262.5g, slag 52.5g, fixed cement mortar rate is 1:3, water-cement ratio is 0.4, microbial germ powder volume
For 2%；
(2) 450g composite gelled materials are poured into after being stirred in agitated kettle, bacterium powder is added in 180g water and stirs equal
After even, import in agitated kettle and stir.It is subsequently added sand and persistently stirs, slurry is poured into and vibrated into mould
Type, obtains test specimen.
(3) test specimen is placed in relative humidity 63%, the environment that 22 DEG C of temperature and conserved, the demoulding obtains sample after 1.5d, will
Sample is placed in relative humidity 98%, the standard chamber that 20 DEG C of temperature and conserved 1.5 days, then in common carbonization environment (CO2Volume integral
Number 50%, environment temperature are 22 DEG C, relative humidity 80%, normal pressure) carbon maintenance 2d, obtain utilization microbial mineralization processing copper
Slag is prepared into building materials.
Embodiment 4：
(1) copper ashes, slag and lime are mixed into complex cementitious system in the ratio of C2 in table 1, fixed cement mortar rate is 1:
3, water-cement ratio is 0.4, and microbial germ powder volume is 1.5%；
(2) 450g composite gelled materials are poured into after being stirred in agitated kettle, bacterium powder is added in 180g water and stirs equal
After even, import in agitated kettle and stir.It is subsequently added sand and persistently stirs, slurry is poured into and vibrated into mould
Type, obtains test specimen.
(3) test specimen is placed in relative humidity 63%, the environment that 22 DEG C of temperature and conserved, the demoulding obtains sample after 1d, will try
Sample be placed in relative humidity 99%, the standard chamber that 22 DEG C of temperature conserve 3 days, then high pressure carbonization environment (humidity be 73%,
CO2Pressure is under the conditions of 0.3MPa) carbon maintenance 4h, obtain the utilization microbial mineralization processing copper ashes and be prepared into building materials.
Claims (5)
1. a kind of method that utilization microbial mineralization processing copper ashes prepares building materials, it is characterised in that：This method comprises the following steps：
1) copper ashes, slag and lime are mixed evenly and obtain composite gelled material；
2) composite gelled material is poured into agitated kettle, the aqueous solution that microbial germ powder is added afterwards continues to be stirred until homogeneous, with
Sand is added afterwards and slurry is stirred into, and slurry is poured into mould shaping of vibrating afterwards, test specimen is obtained；
3) by step 2) to be placed in relative humidity be to conserve the demoulding in the environment that 60% ± 3%, temperature is 20 ± 2 DEG C for obtained test specimen
Sample is obtained, it is maintenance in the standard chamber that more than 95%, temperature is 20 ± 2 DEG C that sample is placed in into relative humidity, afterwards again will examination
Sample is put into autoclave pressure, and the utilization microbial mineralization processing copper ashes is obtained after being conserved through carbon and is prepared into building materials.
2. the method that a kind of utilization microbial mineralization processing copper ashes as claimed in claim 1 prepares building materials, it is characterised in that：Institute
The copper ashes and the gross mass of slag and the mass ratio of lime stated are 7:3, the wherein mass ratio of copper ashes and slag is 1:1~5:1；Institute
State microbial germ powder to refer to that the microbial germ powder of carbonic anhydrase can be produced, its volume is the 1%~2% of composite gelled material quality；
The quality of the aqueous solution reclaimed water of the microbial germ powder and the mass ratio of composite gelled material are 0.4~0.6, composite gelled material
Mass ratio with sand is 1:2~1:3.
3. the method that a kind of utilization microbial mineralization processing copper ashes as claimed in claim 1 prepares building materials, it is characterised in that：Institute
The microbial germ powder stated is colloid bacillus cereus.
4. the method that a kind of utilization microbial mineralization processing copper ashes as claimed in claim 1 prepares building materials, it is characterised in that：Step
It is rapid 3) described in maintenance the demoulding refer to during relative humidity be the environment that 60% ± 3%, temperature is 20 ± 2 DEG C maintenance 1~2d after
The demoulding, obtains sample；The described when a length of 2~3d conserved in standard chamber.
5. the method that a kind of utilization microbial mineralization processing copper ashes as claimed in claim 1 prepares building materials, it is characterised in that：Step
It is rapid 3) described in carbon maintenance refer in CO2Volume fraction is that 15%~50%, environment temperature is 22 DEG C~25 DEG C, relative humidity
1~3d is conserved under conditions of 40%~80%, or in relative humidity 70% ± 3%, CO2Pressure is 0.1~0.3MPa bar
4~6h is conserved under part.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108383462A (en) * | 2018-04-18 | 2018-08-10 | 肥西县碧涛建材有限公司 | A kind of building material and preparation method thereof handled using microbial mineralization |
| CN111775270A (en) * | 2020-06-30 | 2020-10-16 | 东南大学 | Method for preparing building material by mineralization of compound microorganisms |
| CN114149244A (en) * | 2021-12-10 | 2022-03-08 | 临沂海螺新材料科技有限公司 | Method for preparing red mud building material product based on composite microbial technology |
| CN115159935A (en) * | 2022-06-20 | 2022-10-11 | 东南大学 | Carbon-fixing auxiliary cementing material, and preparation method and application thereof |
| CN116283143A (en) * | 2023-03-03 | 2023-06-23 | 湖北工业大学 | Method for preparing material of corrosion-resistant pipe sheet by using copper carbide slag |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553519A (en) * | 2013-09-11 | 2014-02-05 | 苏州负碳谷材料科技有限公司 | Carbon-supported copper ash cement brick and making method thereof |
| CN105481469A (en) * | 2015-12-09 | 2016-04-13 | 东南大学 | Method used for preparing solid waste building material products based on microorganism mineralization induction technology |
-
2017
- 2017-04-25 CN CN201710275423.8A patent/CN107056156A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553519A (en) * | 2013-09-11 | 2014-02-05 | 苏州负碳谷材料科技有限公司 | Carbon-supported copper ash cement brick and making method thereof |
| CN105481469A (en) * | 2015-12-09 | 2016-04-13 | 东南大学 | Method used for preparing solid waste building material products based on microorganism mineralization induction technology |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108383462A (en) * | 2018-04-18 | 2018-08-10 | 肥西县碧涛建材有限公司 | A kind of building material and preparation method thereof handled using microbial mineralization |
| CN111775270A (en) * | 2020-06-30 | 2020-10-16 | 东南大学 | Method for preparing building material by mineralization of compound microorganisms |
| CN111775270B (en) * | 2020-06-30 | 2021-07-27 | 东南大学 | Method for preparing building material by mineralization of compound microorganisms |
| CN114149244A (en) * | 2021-12-10 | 2022-03-08 | 临沂海螺新材料科技有限公司 | Method for preparing red mud building material product based on composite microbial technology |
| CN115159935A (en) * | 2022-06-20 | 2022-10-11 | 东南大学 | Carbon-fixing auxiliary cementing material, and preparation method and application thereof |
| CN116283143A (en) * | 2023-03-03 | 2023-06-23 | 湖北工业大学 | Method for preparing material of corrosion-resistant pipe sheet by using copper carbide slag |
| CN116283143B (en) * | 2023-03-03 | 2024-08-16 | 湖北工业大学 | Method for preparing material of corrosion-resistant pipe sheet by using copper carbide slag |
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