CN107500578A - The production method of binder materials based on red mud desulphurization denitration - Google Patents
The production method of binder materials based on red mud desulphurization denitration Download PDFInfo
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- CN107500578A CN107500578A CN201710939566.4A CN201710939566A CN107500578A CN 107500578 A CN107500578 A CN 107500578A CN 201710939566 A CN201710939566 A CN 201710939566A CN 107500578 A CN107500578 A CN 107500578A
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
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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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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Abstract
The invention discloses a kind of production method of binder materials, including：(1) dry desulfurization denitration is carried out to flue gas using flue gas desulfurization and denitrification agent, so as to form flue gas desulfurization and denitrification accessory substance；The flue gas desulfurization and denitrification agent is made up of the raw material including red mud powder and nanosize metal oxide；(2) the flue gas desulfurization and denitrification accessory substance is well mixed with solid waste, obtains binder materials；The weight ratio of wherein described flue gas desulfurization and denitrification accessory substance and solid waste is 40~70:30~60.The inventive method achieves the recycling of red mud, and high-quality binder materials can be made.
Description
Technical field
The present invention relates to a kind of production method of binder materials, the life of the binder materials of red mud desulphurization denitration is based especially on
Production method.
Background technology
With being on the rise for environmental problem, environmental protection standard is increasingly strict, and people are for the cost of gas cleaning, perception etc.
Demand increasingly increases, and cost is relatively low, the relatively good dry flue gas desulphurization technology of perception is also developed and applied.Dry method cigarette
Desulfurization technology mainly has in-furnace calcium spraying flue gas desulfurization technique, duct injection desulfurization technology, electron beam irradiation flue gas desulfurization technique
Deng.In addition, dry type integration desulfurization denitration technology has also obtained research and development.
Application of the red mud as desulfurization denitrification agent is used at present, in red mud backbone formula desulphurization denitration technology application process
Produce sulfate and nitrate class desulphurization denitration waste residue.The Chinese patent application of Application No. 201310491568.3 disclose with
MnO2And V2O5Combined modified red mud is as flue gas demercuration desulphurization denitration adsorbent, but the technique does not consider desulphurization denitration waste residue
Application.It is sharply increasing, do not given up as the solid that secondary resource is used in addition, with the fast development of national economy
Thing (such as flyash, slag powders etc.) takes a large amount of soils, causes many secondary pollutions, its recycling problem has also turned into
Current study hotspot.CN102515595A discloses a kind of desuifurized composite gelled material, with desuifurized and industrialization
Gypsum is learned as inorganic mineral additive and the K such as primary raw material, addition cement, flyash2SO4Prepared again Deng chemical addition agent
Rubber alloy gel material.But the technique does not possess specific aim, do not consider denitration waste residue, can not to greatest extent to desulphurization denitration waste residue with
And solid waste is recycled.
The content of the invention
It is an object of the present invention to provide a kind of production method of binder materials, and it can both reduce industrial wastes,
Binder materials can also be obtained using flue gas desulfurization and denitrification accessory substance and industrial solid wastes.According to the further mesh of the present invention
, discharged in production process without " three wastes ", it is green so as to realize so as to dramatically reduce the expenditure of enterprise pollution improvement
Color, recyclable economic development.
The purpose of the present invention is achieved by the following technical solution.
The present invention provides a kind of production method of binder materials, comprises the following steps：
(1) dry desulfurization denitration is carried out to flue gas using flue gas desulfurization and denitrification agent, so as to form flue gas desulfurization and denitrification by-product
Thing；The flue gas desulfurization and denitrification agent is made up of the raw material including red mud powder and nanosize metal oxide；Wherein, red mud powder 60
~80 parts by weight, nanosize metal oxide include following component：The parts by weight of MgO 16~29, MnO20.005~0.03 weight
Part, the parts by weight of CuO 1.0~3.5, the parts by weight of CaO 0.2~1.0 and Fe2O30.02~0.12 parts by weight；
(2) the flue gas desulfurization and denitrification accessory substance is well mixed with solid waste, obtains binder materials；Wherein described cigarette
The weight of desulfurization denitration accessory substance and solid waste ratio is 40~70:30~60.
In accordance with the present production process, it is preferable that in step (1), the moisture content of the flue gas desulfurization and denitrification accessory substance
For 0.8~1wt%, particle diameter is less than or equal to 0.074mm；And in flue gas desulfurization and denitrification accessory substance sulphates content be 50~
80wt%, Si oxide content are 6~20wt%, and aluminium oxide content is 6~20wt%, and nitrate content be 5~
15wt%.
In accordance with the present production process, it is preferable that in step (1), the red mud powder is 60~70 parts by weight, described to receive
Meter level metal oxide includes following component：The parts by weight of MgO 16~19, MnO20.005~0.02 parts by weight, CuO 1.0~
The parts by weight of 2.0 parts by weight, CaO0.2~0.5 and Fe2O30.02~0.08 parts by weight.
In accordance with the present production process, it is preferable that in step (1), the nanosize metal oxide also includes V2O5
0.005~0.02 parts by weight.
In accordance with the present production process, it is preferable that in step (1), the attached liquid of the red mud for preparing the red mud powder
Basicity be 3000~15000mg/L；The particle diameter of the red mud powder is more than or equal to 200 mesh；The nanosize metal oxide
Particle diameter is 10~60nm.
In accordance with the present production process, it is preferable that in step (2), the flue gas desulfurization and denitrification accessory substance gives up with solid
The weight ratio of thing is 55~70:30~45.
In accordance with the present production process, it is preferable that in step (2), the solid waste is selected from flyash, slag, built
One or more in building refuse.
In accordance with the present production process, it is preferable that in step (2), the solid waste is made up of flyash and slag,
And flyash and slag weight ratio are 15~40:7~15.
In accordance with the present production process, it is preferable that in step (2), the forming method of the binder materials is including as follows
Step：Solid waste is ground to solid waste powder by (1 ')；(2 ') mix desulphurization denitration accessory substance with the solid waste powder
And grind, obtain binder materials；The specific surface area of the binder materials is 350~450m2/kg。
In accordance with the present production process, it is preferable that in step (1 '), the preparation method of solid waste powder is：By solid
It is 1 in material ball ratio in waste input ball mill:0.5~1h of controlled lapping under conditions of 9~11, so as to obtain solid waste powder；
In step (2 '), the preparation method of binder materials is：Flue gas desulfurization and denitrification accessory substance and above-mentioned solid waste powder input are ground
It is 1 in material ball ratio in machine:1~3h of controlled lapping under conditions of 9~11, obtains binder materials.
The desulfurization denitrification agent of the present invention contains nanosize metal oxide using red mud as primary raw material, its obtained cigarette
The composition of desulfurization denitration accessory substance is advantageous to fill up the inside airway of other building materials materials.The present invention takes full advantage of above-mentioned cigarette
The characteristic of desulfurization denitration accessory substance, and without carrying out high-temperature calcination to the accessory substance, using unburned handling process, given up with solid
Thing mixes, and reduces energy consumption and material cost, and obtained binder materials property is stable, intensity is high, energy consumption is low, waste residue utilization rate
Height, it is a kind of environment-friendly, economy, multifunction green construction material, there is significant energy economy ＆ environment benefit.
Embodiment
With reference to specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to
This.
In the present invention, red mud refers to that aluminium industry extracts the contaminative waste residue discharged during aluminum oxide, and it has strong basicity, and
Contain the components such as substantial amounts of ferriferous oxide, calcium oxide, aluminum oxide, silica.In the present invention, the attached liquid of the red mud is also referred to as
" wastewater from red mud ", refer to the liquid phase contained in red mud.
In the present invention, " wt% " represents mass percent, and " vol% " represents percentage by volume.In the present invention, " nanoscale "
It is 1~100nm to refer to average grain diameter.
The binder materials of the present invention is a kind of construction material.The production method of the binder materials of the present invention includes：(1) flue gas
Desulphurization denitration step；(2) blend step.Introduce in detail below.
<Flue gas desulfurization and denitrification step>
Dry desulfurization denitration is carried out to flue gas using flue gas desulfurization and denitrification agent, so as to form flue gas desulfurization and denitrification accessory substance.
The conventional equipment in this area can be used to carry out flue gas desulfurization and denitrification, repeated no more here.The desulfurization denitrification agent of the present invention is by wrapping
The raw material for including red mud powder and nanosize metal oxide is made.
In the present invention, based on 100 parts by weight flue gas desulfurization and denitrification agent, the dosage of red mud powder is 60~80 parts by weight, excellent
Elect 60~70 parts by weight as.Desulfurization off sulfide effect can so be improved.The component of the red mud powder of the present invention is not particularly limited.
For example, the red mud powder includes following component：6~50wt% of calcium oxide, 2~10wt% of sodium oxide molybdena, 5~20wt% of aluminum oxide,
3~25wt% of 5~50wt% of iron oxide and silica.It so can further improve desulfurization off sulfide effect.For preparing
The basicity for stating the attached liquid of the red mud of red mud powder is 3000~15000mg/L, preferably 5000~10000mg/L.It can so enter
One step improves the synergy of red mud and other components, so as to improve desulfurization off sulfide effect.
The nano-metal-oxide of the present invention includes following component：The parts by weight of MgO 16~29, MnO20.005~0.03
Parts by weight, the parts by weight of CuO 1.0~3.5, the parts by weight of CaO 0.2~1.0 and Fe2O30.02~0.12 parts by weight.According to this hair
A bright embodiment, the nanosize metal oxide include following component：The parts by weight of MgO 16~19, MnO2 0.005
~0.02 parts by weight, the parts by weight of CuO 1.0~2.0, the parts by weight of CaO 0.2~0.5 and Fe2O30.02~0.08 parts by weight.It is preferred that
Ground, the nanosize metal oxide include following component：The parts by weight of MgO 17~19, MnO20.008~0.015 parts by weight,
The parts by weight of CuO 1.2~1.8, the parts by weight of CaO 0.3~0.5 and Fe2O3Form 0.04~0.06 parts by weight.It is it is highly preferred that described
Nanosize metal oxide includes following component：The parts by weight of MgO 18, MnO20.011 parts by weight, the parts by weight of CuO 1.539, CaO
0.4 parts by weight and Fe2O3Form 0.05 parts by weight.In the present invention, nanosize metal oxide can be only by said components group
Into.According to another implementation of the invention, the nanosize metal oxide also comprises the following components：V2O50.005~
0.02 parts by weight；Preferably 0.008~0.015 parts by weight；Such as 0.015 parts by weight.Said components are controlled in above range,
Desulfurization off sulfide effect can further be improved.In the present invention, nanosize metal oxide only can be made up of said components.
According to the flue gas desulfurization and denitrification agent of the present invention, the particle diameter of the red mud powder can be more than or equal to 200 mesh.The nanometer
The particle diameter of level metal oxide can be 10~60nm, preferably 10~50nm, more preferably 15~40nm, further preferably for 20~
30nm.In the present invention, when metal oxide uses nanoscale, the increase of its specific surface area, metal oxide and oxygen, cigarette are added
The contact area of gas, for SO in flue gas2And NOXAdsorption function increase, so as to improve the efficiency of desulphurization denitration.Work as metal oxygen
When compound is using particle diameter of the invention, SO in its specific surface area flue gas preferably2And NOXAbsorption, can further improve desulfurization and take off
Nitre efficiency.
In the flue gas desulfurization and denitrification step of the present invention, the flue gas desulfurization and denitrification agent is dry state.The oxygen content of flue gas is 10
~20vol%, such as 10~15vol%.SO in flue gas2Content can be less than or equal to 3000mg/Nm3, preferably 1000~
2000mg/Nm3；NOXContent can be less than or equal to 600mg/Nm3, preferably 200~600mg/Nm3.Temperature at smoke inlet
Spend for 110~160 DEG C.It so may further ensure that flue gas desulfurization and denitrification agent plays preferably effect.
The operation of flue gas desulfurization and denitrification agent and pending smoke contacts is carried out in the recirculating fluidized bed in desulphurization denitration tower,
So that flue gas desulfurization and denitrification agent fully contacts with pending flue gas, dry desulfurization denitration process is carried out.In the present invention, the cigarette
Desulfurization denitrfying agent can use duct injection mode with smoke contacts.In the present invention, it is preferable that the flue gas desulfurization and denitrification agent with
While smoke contacts, industrial wastewater containing alkali is sprayed into desulphurization denitration tower, the pH of the industrial wastewater containing alkali is 7~13.Institute
It can be 7 for the odorless from enterprises such as printing and dyeing mill, paper mill, oil plants, the pH without organic matter to state industrial wastewater containing alkali
~13 alkaline waste water.
Flue gas after processing can enter deduster and carry out dust removal process, be purified flue gas and lime-ash；The smoke-purifying
Gas can be directly discharged into air, discharged at least partially as the flue gas flue gas desulfurization and denitrification accessory substance in lime-ash.In lime-ash
Also another part can return recycles in desulphurization denitration tower.In the flue gas desulfurization and denitrification accessory substance containing sulfate,
Nitrate and dust etc..
According to the preferred embodiment of the present invention, the flue gas desulfurization and denitrification accessory substance can pass through at dry and screening
Reason, makes its moisture control less than 1wt%, more preferably 0.8~1wt%；Size controlling is in below 0.074mm.The present invention
In, it is preferable that sulphates content is 50~80wt% in flue gas desulfurization and denitrification accessory substance, and Si oxide content is 6~20wt%,
Aluminium oxide content is 6~20wt%, and nitrate content is 5~15wt%.When flue gas desulfurization and denitrification accessory substance has so
Component when, performance more preferably binder materials can be obtained.
<Blend step>
Above-mentioned flue gas desulfurization and denitrification accessory substance is well mixed with solid waste, so as to form binder materials.The thing
Material can also include additive.The flue gas desulfurization and denitrification accessory substance is that above-mentioned flue gas desulfurization and denitrification step obtains, here no longer
Repeat.
The blend step of the present invention specifically may include steps of：
Solid waste is ground to solid waste powder by (1 ')；
Desulphurization denitration accessory substance is mixed and ground with the solid waste powder by (2 '), obtains binder materials；The gelling
The specific surface area of material is 350~450m2/kg。
In the present invention, the weight ratio of the flue gas desulfurization and denitrification accessory substance and solid waste is 40~70:30~60, preferably
For 55~70:30~45.
Method in accordance with the invention it is preferred that the one kind of the solid waste in flyash, slag, building waste
Or a variety of, more preferably flyash and/or slag.According to an embodiment of the invention, the solid waste is by flyash
Formed with slag, and the two weight ratio is 15~40:7~15, more preferably 20~35:10.
Method in accordance with the invention it is preferred that the particle diameter of the solid waste is more than or equal to 200 mesh, more preferably greater than etc.
In 250 mesh.
In step (1 '), specifically, solid waste is put into ball mill, is 1 in material ball ratio:It is strong under conditions of 9~11
System 0.5~1h of grinding, so as to obtain solid waste powder.
In step (2 '), specifically, flue gas desulfurization and denitrification accessory substance and above-mentioned solid waste powder are put into grinder,
Material ball ratio is 1:1~3h of controlled lapping under conditions of 9~11, obtains binder materials.Preferably, the binder materials specific surface area
For 350~450m2/kg。
" part " in following preparation example and embodiment represents parts by weight, unless specifically stated otherwise.
The performance of the binder materials of following examples is measured using GBT50448-2008.
In following preparation example, red mud powder be by by red mud at 180 DEG C heating, drying, be then crushed to particle diameter as 200
What~250 mesh obtained.The basicity of the attached liquid of wherein used red mud is 8000mg/L.Nano-scale oxide is by using ball
Corresponding metal oxide is ground to what particle diameter obtained for 25nm by grinding machine.
Preparation example 1
The red mud powder that table 1 is formulated is well mixed with nanosize metal oxide, the flue gas desulfurization based on red mud is obtained and takes off
Nitre agent.
Flue gas desulfurization and denitrification agent proportioning of the table 1 based on red mud
| Component | Parts by weight |
| Red mud powder | 80 |
| Nanoscale MgO | 18 |
| Nanoscale MnO2 | 0.011 |
| Nanoscale CuO | 1.539 |
| Nanoscale CaO | 0.4 |
| Nanoscale Fe2O3 | 0.05 |
The flue gas desulfurization and denitrification agent is added in Circulating Fluidized Bed Process system, desulphurization denitration is synchronized using dry method,
So as to obtain flue gas flue gas desulfurization and denitrification accessory substance.Wherein, inlet flue gas is have passed through pre- dust removal process, and adjust oxygen content to
15vol% pending flue gas.The basic parameter of inlet flue gas and exiting flue gas is as described in table 2 and table 3.
The desulphurization denitration inlet flue gas parameter of table 2
| Sequence number | Project | Quantity | Unit |
| 1 | Inlet flue gas amount (operating mode) | 780000 | m3/h |
| 2 | Standard state exhaust gas volumn | 515593 | Nm3/h |
| 3 | Absorption tower inlet temperature | 140 | ℃ |
| 4 | Sulfur dioxide entrance concentration | 1650 | mg/Nm3 |
| 5 | Nitrogen oxides entrance concentration | 450 | mg/Nm3 |
| 6 | Absorption tower entrance flue dust | 113 | mg/Nm3 |
| 7 | Humidity of flue gas | 5.2 | % |
The desulphurization denitration exiting flue gas parameter of table 3
| Sequence number | Project | Quantity | Unit |
| 1 | Exiting flue gas amount (operating mode) | 624350 | m3/h |
| 2 | Standard state exhaust gas volumn | 511855 | Nm3/h |
| 3 | Exhaust gas temperature | 60 | ℃ |
| 4 | Sulfur dioxide emissioning concentration | 41 | mg/Nm3 |
| 5 | Desulfuration efficiency | 97.5 | % |
| 6 | Discharged nitrous oxides concentration | 47 | mg/Nm3 |
| 7 | Denitration efficiency | 89.6 | % |
| 8 | Export dust concentration | 22 | mg/Nm3 |
| 9 | Efficiency of dust collection | 80.7 | % |
Embodiment 1
Flyash and slag are put into ball mill, are 1 in material ball ratio:Controlled lapping 1h under conditions of 10, obtains solid
Waste powder；The flue gas desulfurization and denitrification accessory substance of preparation example 1 and the solid waste powder are put into grinder, are 1 in material ball ratio:10
Under conditions of controlled lapping 2h, it is 350~450m to obtain specific surface area2/ kg binder materials.The consumption proportion of raw material is shown in Table 4.
4 each raw material dosage of table matches
| Raw material | Desulphurization denitration accessory substance | Flyash | Slag |
| Parts by weight | 55 | 35 | 10 |
Embodiment 2
Except being matched using the raw material dosage of table 5, binder materials is made with embodiment 1 in remaining step.
5 each raw material dosage of table matches
| Raw material | Desulphurization denitration accessory substance | Flyash | Slag |
| Parts by weight | 65 | 25 | 10 |
Embodiment 3
Except being matched using the raw material dosage of table 6, binder materials is made with embodiment 1 in remaining step.
6 each raw material dosage of table matches
| Raw material | Desulphurization denitration accessory substance | Flyash | Slag |
| Parts by weight | 70 | 20 | 10 |
The main performance index for the binder materials that embodiment 1~3 is obtained is measured, and the results are shown in Table 7.
The binder materials performance table of the embodiment 1~3 of table 7
As can be seen from Table 7, binder materials 7d and 28d of the invention rupture strength, compression strength are higher, and material is basic
Good mechanical properties.
The present invention is not limited to above-mentioned embodiment, in the case of without departing substantially from the substantive content of the present invention, this area skill
Any deformation, improvement, the replacement that art personnel are contemplated that each fall within the scope of the present invention.
Claims (10)
1. a kind of production method of binder materials, it is characterised in that comprise the following steps：
(1) dry desulfurization denitration is carried out to flue gas using flue gas desulfurization and denitrification agent, so as to form flue gas desulfurization and denitrification accessory substance；Institute
Flue gas desulfurization and denitrification agent is stated to be made up of the raw material including red mud powder and nanosize metal oxide；Wherein, red mud powder is 60~80
Parts by weight, nanosize metal oxide include following component：The parts by weight of MgO 16~29, MnO20.005~0.03 parts by weight,
The parts by weight of CuO 1.0~3.5, the parts by weight of CaO 0.2~1.0 and Fe2O30.02~0.12 parts by weight；
(2) the flue gas desulfurization and denitrification accessory substance is well mixed with solid waste, obtains binder materials；Wherein described flue gas takes off
The weight of sulphur denitration accessory substance and solid waste ratio is 40~70:30~60.
2. production method according to claim 1, it is characterised in that in step (1), the flue gas desulfurization and denitrification accessory substance
Moisture content be 0.8~1wt%, particle diameter is less than or equal to 0.074mm；And sulphates content is 50 in flue gas desulfurization and denitrification accessory substance
~80wt%, Si oxide content are 6~20wt%, and aluminium oxide content is 6~20wt%, and nitrate content be 5~
15wt%.
3. production method according to claim 1 or 2, it is characterised in that in step (1), the red mud powder is 60~70
Parts by weight；The nanosize metal oxide includes following component：The parts by weight of MgO 16~19, MnO20.005~0.02 weight
Part, the parts by weight of CuO 1.0~2.0, the parts by weight of CaO 0.2~0.5 and Fe2O30.02~0.08 parts by weight.
4. production method according to claim 1 or 2, it is characterised in that in step (1), the nano level metal oxidation
Thing also includes V2O50.005~0.02 parts by weight.
5. production method according to claim 1 or 2, it is characterised in that in step (1), for preparing the red mud powder
The basicity of attached liquid of red mud be 3000~15000mg/L；The particle diameter of the red mud powder is more than or equal to 200 mesh；The nanoscale
The particle diameter of metal oxide is 10~60nm.
6. production method according to claim 1 or 2, it is characterised in that in step (2), the flue gas desulfurization and denitrification pair
The weight of product and solid waste ratio is 55~70:30~45.
7. production method according to claim 6, it is characterised in that in step (2), the solid waste is selected from fine coal
One or more in ash, slag, building waste.
8. production method according to claim 1 or 2, it is characterised in that in step (2), the solid waste is by fine coal
Ash and slag composition, and flyash and slag weight ratio are 15~40:7~15.
9. production method according to claim 1 or 2, it is characterised in that in step (2), the formation of the binder materials
Method comprises the following steps：
Solid waste is ground to solid waste powder by (1 ')；With
Desulphurization denitration accessory substance is mixed and ground with the solid waste powder by (2 '), obtains binder materials；The binder materials
Specific surface area be 350~450m2/kg。
10. production method according to claim 9, it is characterised in that：
In step (1 '), the preparation method of solid waste powder is：Solid waste is put into ball mill, is 1 in material ball ratio:9~
0.5~1h of controlled lapping under conditions of 11, so as to obtain solid waste powder；With
In step (2 '), the preparation method of binder materials is：Flue gas desulfurization and denitrification accessory substance and above-mentioned solid waste powder are put into
It is 1 in material ball ratio in grinder:1~3h of controlled lapping under conditions of 9~11, obtains binder materials.
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| CN108686651A (en) * | 2018-05-30 | 2018-10-23 | 临沂大学 | A kind of catalyst and its preparation method and application of flue gas denitration demercuration simultaneously |
| CN111499227A (en) * | 2020-04-23 | 2020-08-07 | 昆明理工大学 | Method for preparing gel material by synchronous flue gas desulfurization and denitrification treatment of smelting industrial waste residues and application of obtained gel material |
| CN113480259A (en) * | 2021-07-21 | 2021-10-08 | 鞍钢股份有限公司 | High-crack-resistance large-volume concrete prepared from metallurgical solid wastes and method thereof |
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Application publication date: 20171222 |