CN106882932A - A kind of method of comprehensive utilization of red mud - Google Patents
A kind of method of comprehensive utilization of red mud Download PDFInfo
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- CN106882932A CN106882932A CN201710126298.4A CN201710126298A CN106882932A CN 106882932 A CN106882932 A CN 106882932A CN 201710126298 A CN201710126298 A CN 201710126298A CN 106882932 A CN106882932 A CN 106882932A
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- Prior art keywords
- red mud
- calcareous
- comprehensive utilization
- dealkalize
- mixing slurry
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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
- 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
-
- 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
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
-
- 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
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/126—Semi-solid reactants, e.g. slurries
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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
Abstract
The invention discloses a kind of method of comprehensive utilization of red mud, the method first mixes red mud with calcareous dealkalize agent, add water stirring, it is made the calcareous dealkalize agent mixing slurry of red mud, the calcareous dealkalize agent mixing slurry of red mud and sulfur-containing smoke gas counter current contacting sulfur dioxide absorption in tower, desulfurization fume tower top is discharged, and red mud mixing slurry is discharged by bottom of towe, and red mud mixing slurry continues with prepared Portland cement.The present invention is realized using multinomial benefits such as industrial residue, flue gas high-efficiency desulfurization, the efficient dealkalize of red mud and regenerations simultaneously.
Description
Technical field
Field is recycled the present invention relates to industrial waste, and in particular to a kind of method of comprehensive utilization of red mud.
Background technology
The coal savings amount resource structures feature of China's abundant is determined with fire coal as main production capacity mode, produced therewith
Sulfur dioxide and Acid Rain Pollution cause serious influence to normal life, agricultural production and the building construction of resident.Cause
This, reduces SO in flue gas2Content, the pollution for controlling sulfur dioxide is most urgent in current In The Atmosphere Over China field of environmental improvement
One of task.
There is many research currently for flue gas desulfurization technique, specifically as listed in table 1：
The existing flue gas desulfurization technique of table 1
Substantial amounts of red mud can be produced in aluminum oxide industry mine tailing, and often produces 1t aluminum oxide, the red of output 0.8-1.5t can be attached
Mud.With the development and the decline of bauxite grade of aluminum oxide industry, red mud quantum of output will be more and more big.Because China lacks red
The practicable techniques that mud is largely utilized, the comprehensive utilization ratio of red mud is constantly in reduced levels, and only 4% or so, far below complete
The average of state's industrial solid wastes 65% utilizes level, causes a large amount of of red mud and stores up.Current most red mud can not be by
Effectively utilize, the stockyard of large area can only be relied on to stack, not only occupy substantial amounts of soil, and red mud in itself with high-alkali
Property, very big influence can be caused to the environment of surrounding.Therefore, the exploitation for reducing the high alkalinity increasing red mud of red mud seem outstanding
For eager.
The comprehensive recycling aspect for red mud has substantial amounts of research both at home and abroad, and direction is concentrated mainly on red mud and extracts oxidation
Iron, slag cement made from red mud, sulphate aluminium cement, road silicate cement are prepared, red mud slurry desulfurization etc., but the red mud after desulfurization
Slag for comprehensive is neutralized using above rarely having research, how to realize that red mud comprehensive utilization truly needs for the one of solution and dashes forward
It is broken.
The content of the invention
Process what sulfur-containing smoke gas were comprehensively utilized to red mud slag simultaneously using red mud it is an object of the invention to provide a kind of
Method.
To achieve the above object, the present invention uses following technical scheme：
A kind of method of comprehensive utilization of red mud, comprises the following steps：1）Red mud is mixed with calcareous dealkalize agent, add water stirring, made
Into red mud-calcareous dealkalize agent mixing slurry；
2）Red mud-calcareous dealkalize agent mixing slurry and sulfur-containing smoke gas counter current contacting sulfur dioxide absorption in tower, desulfurization fume tower top
Discharge, when the pH value of red mud-calcareous dealkalize agent mixing slurry is close to neutrality, red mud mixing slurry is discharged by bottom of towe, while supplement is new
Red mud-calcareous dealkalize agent mixing slurry.
Step 1）Middle red mud is 85 ~ 95% with calcareous dealkalize agent mass percent: 5~15%.
Step 1）The consumption of reclaimed water is 5-9 times of red mud and calcareous dealkalize agent gross mass.
Step 2）Middle red mud-calcareous dealkalize agent mixing slurry is 12-20 with the liquid-gas ratio of sulfur-containing smoke gas:1（L/m3）.
Red mud mixing slurry carries out separation of solid and liquid, and solid portion is dried to moisture content and red mud slag is obtained less than 10%；Take following
The raw material of mass percent：Red mud slag 45-55%, lime stone 35-45%, sandstone 3-8%, flyash 1-3%, mix, and grinding is to thin
80 μm of degree tails over and cement slurry is obtained less than 18%, and cement slurry carries out calcining to obtain clinker；By mass percentage by 85-95%
Clinker is mixed with 5-15% mixing materials, and grinding is tailed over less than 10% for 80 μm to fineness, and portland cement is obtained.
The moisture content of cement slurry is less than 0.5%, and temperature during calcining is 1300 DEG C -1450 DEG C, and calcination time is 15-
20min。
Alkali content in red mud slag<1%th, industry by-product gypsum content is 6 ~ 17%.
Mixing material is flyash or slag, and flyash is F grades of flyash for meeting GB/T1596, and slag is to meet GB/
The granulated blast-furnace slag of T203.
Present invention reaction of generation when red mud-calcareous dealkalize agent mixing slurry carries out desulfurization to sulfur-containing smoke gas is as follows：
The present invention is realized using multinomial effects such as industrial residue, flue gas high-efficiency desulfurization, the efficient dealkalize of red mud and regenerations simultaneously
Benefit, specific advantage and feature are as follows：
1st, the present invention adds calcareous dealkalize agent when being processed sulfur-containing smoke gas using red mud in advance, can be by the chemistry in red mud
It is sufficiently displaced from out with reference to alkali and is aged, be then used further to adverse current desulfurization, such operation treatment can realizes red mud in itself
Efficient dealkalize, can also realize the high-efficiency desulfurization of flue gas, can make the sulfur dioxide in sulfur-containing smoke gas by 520 ~ 2600mg/Nm3, reduce
To 25 ~ 130mg/Nm3, so as to realize the sulfur dioxide efficient absorption in sulfurous gas.
2nd, the red mud-calcareous dealkalize agent mixing slurry interactive mode desulfurization dealkalization method that the present invention is utilized, dealkalize rate up to 80% with
On, desulfuration efficiency is up to 90-95% and flue gas after desulfurization content of sulfur dioxide is less than 400mg/Nm3, meet state specified standards.
Substantial amounts of desulfurizing agent can be saved simultaneously, desulfurizing agent expense units up to a million can be saved every year.
3rd, the present invention can be with the chemical bond in exsolution red mud using the displacement reaction that calcareous dealkalize agent carries out alkali to red mud
Alkali, it is low by the alkali content in the red mud slag after dealkalize desulfurization, 1% is usually no more than, hardly made when for preparing cement
Into alkali, and the firing temperature of clinker is low compared with normal water mud sinter leaching temperature, and heat consumption is few, and yield is high.
4th, containing 6 ~ 17% industry by-product gypsum in the red mud slag obtained by the present invention, the gypsum of the part is through high-temperature calcination
The anhydrite of transformation can completely replace the natural gypsum as the slow setting additive of cement, be red mud without extra addition retarder
Slag prepares the important basis of Portland cement place mat, realizes wet recycle high-efficiency desulfurization and waste red mud residues highly efficient regeneration
The double effectses for utilizing.
Specific embodiment
For a better understanding of the present invention, present invention is described further with reference to embodiment, but this hair
Bright content is not limited solely to the following examples, and embodiment is not construed as limitation of the invention.
Flyash used in following examples is F grades of flyash for meeting GB/T1596, and slag is to meet GB/T203
Granulated blast-furnace slag.
Embodiment 1：
The preparation of a, red mud-calcareous dealkalize agent mixing slurry：
By red mud from sintering process and calcium oxide（Calcareous dealkalize agent）According to 85:15 component mixes than injection red mud-calcareous dealkalize agent
In slurry preparation vessel, agitating device is installed at the two ends of preparation vessel, adds water and stir, it is 9 to be prepared into liquid-solid ratio: 1（kg/kg）
Red mud-calcareous dealkalize agent mixing slurry；
The desulfurization of b, red mud-calcareous dealkalize agent mixing slurry：
The red mud that step a is made-calcareous dealkalize agent mixing slurry is imported in storagetank, using slurry circulating pump by storagetank
Red mud-calcareous dealkalize agent mixing slurry is sent to desulfurization column overhead and the spray equipment point by tower top is spilt into desulfurizing tower, and contains
SO2Flue gas（Content of sulfur dioxide is 1600mg/Nm3）Then entered in desulfurizing tower from the bottom of desulfurizing tower by booster fan, from
Top enter red mud-calcareous dealkalize agent mixing slurry and bottom enter containing SO2Flue gas carries out abundant counter current contacting, and desulfurization occurs
Reaction（Acid-base neutralization reaction）, the flue gas after desulfurization（Content of sulfur dioxide is 80mg/Nm3）Discharged from desulfurizing tower top, treat red
When the pH value of mud-calcareous dealkalize agent mixing slurry is close to neutrality, the red mud containing sulphite, sulfate is discharged from desulfurization tower bottom
Mixing slurry, while the new red mud-calcareous dealkalize agent mixing slurry of supplement.
In flue gas desulfurization course, it is passed through the red mud-calcareous dealkalize agent mixing slurry of desulfurizing tower and contains SO2The liquid-gas ratio of flue gas
It is 20:1（L/m3）.
The separation of solid and liquid treatment of c, desulfurization red mud slurry：
The red mud mixing slurry that will be discharged after desulfurization is passed through in Dehydrator for Slurry, by back pressure plate to the squeezing action of mud and
The effect of mud self gravitation during horizontal transmission, reaches the disengaging effect of separation of solid and liquid, and finally solid portion is done
Dry treatment to moisture content obtains red mud slag less than 10%.
D, prepare Portland cement using the red mud slag in the present embodiment step c；Step is as follows：Take in mass ratio
Desulfurization red mud slag 46.7%, lime stone 44%, sandstone 7%, flyash 2.3%, it is well mixed after be placed in flour mill grinding to fineness
80 μm tail over less than 18%, and cement slurry is obtained；Cement slurry is placed in cement kiln, is forged with 1300 DEG C ~ 1400 DEG C of high temperature
15min is burnt, clinker is obtained.
Clinker 95% and flyash 5% are taken by mass percentage, and grinding is to the μ of fineness 80 in being well mixed rearmounted flour mill
M is tailed over less than 10%, and Portland cement is obtained, and Portland cement is prepared into test block under the conditions of standard curing
3d, 28d are conserved respectively and survey its intensity.
Embodiment 2：
Essentially identical with the step of embodiment 1, difference is：
In step a：Calcareous dealkalize agent used is calcium carbonate, and red mud used is Bayer process red mud, and is preparing red mud-calcareous dealkalize
In agent mixing slurry, the component ratio of red mud and calcium carbonate is 90:10；The liquid-solid ratio of red mud-calcareous dealkalize agent mixing slurry is 7:1；
In step b：In flue gas desulfurization course, the red mud being passed through-calcareous dealkalize agent mixing slurry with contain SO2The liquid-gas ratio of flue gas is
16:1（L/m3）.SO before desulfurization2Sulfur dioxide in flue gas content is 1700mg/Nm3, SO after desulfurization2Sulfur dioxide in flue gas content
It is 89mg/Nm3。
In step d desulfurization red mud slag 48.7%, lime stone 43%, sandstone 6%, flyash 2.3%, after being well mixed are taken by quality
It is placed in grinding in flour mill to be tailed over less than 18% for 80 μm to fineness, cement slurry is obtained；Cement slurry is placed in cement kiln,
With 1350 DEG C ~ 1450 DEG C of high-temperature calcination 20min, clinker is obtained.
Clinker 95% and slag 5% are taken by quality, grinding is tailed over for 80 μm to fineness in being well mixed rearmounted flour mill
Less than 10%, Portland cement is obtained, Portland cement is prepared into test block and is conserved respectively under the conditions of standard curing
3d, 28d simultaneously survey its intensity.
Embodiment 3
Essentially identical with the step of embodiment 1, difference is：
In step a：Calcareous dealkalize agent used is calcium hydroxide, and red mud used is combination method red mud, and de- red mud-calcareous is prepared
In alkaline agent mixing slurry, the component ratio of red mud and calcium hydroxide is 95:5；The liquid-solid ratio of red mud-calcareous dealkalize agent mixing slurry is 5:1；
In step b：In flue gas desulfurization course, the liquid-solid ratio being passed through is 5:1 red mud-calcareous dealkalize agent mixing slurry with contain SO2
The liquid-gas ratio of flue gas is 12:1（L/m3）.SO before desulfurization2Sulfur dioxide in flue gas content is 1800mg/Nm3, SO after desulfurization2Flue gas
Middle content of sulfur dioxide is 97mg/Nm3。
In step d desulfurization red mud slag 50.1%, lime stone 41%, sandstone 6%, flyash 2.9%, after being well mixed are taken by quality
It is placed in grinding in flour mill to be tailed over less than 18% for 80 μm to fineness, cement slurry is obtained；Cement slurry is placed in cement kiln,
With 1320 DEG C ~ 1440 DEG C of high-temperature calcination, clinker is obtained.
Clinker 85% and flyash 15% are taken by quality, grinding to 80 μm of sieves of fineness are sieved in being well mixed rearmounted flour mill
It is remaining to be less than 10%, Portland cement is obtained, Portland cement is prepared into test block and is supported respectively under the conditions of standard curing
Shield 3d, 28d simultaneously surveys its intensity.
Embodiment 4
Essentially identical with the step of embodiment 1, difference is：
In step d：Desulfurization red mud slag 54.3% is taken by quality, lime stone 38%, sandstone 5%, flyash 2.7% is well mixed rearmounted
Grinding is tailed over less than 18% for 80 μm to fineness in flour mill, and cement slurry is obtained；Cement slurry is placed in cement kiln, with
1360 DEG C ~ 1450 DEG C of high-temperature calcination, is obtained clinker.
Clinker 85% and slag 15% are taken by quality, grinding is tailed over for 80 μm to fineness in being well mixed rearmounted flour mill
Less than 10%, Portland cement is obtained, Portland cement is prepared into test block and is conserved respectively under the conditions of standard curing
3d, 28d simultaneously survey its intensity.
As can be seen from the above embodiments, the red mud-calcareous dealkalize agent mixing slurry after present invention treatment is in sulfur-containing smoke gas
Desulfuration efficiency up to can reach more than 94%, realize the sulfur dioxide efficient absorption in sulfurous gas.
Desulfurization red mud slag alkali content after embodiment 1-3 is processed through step c is as shown in the table：
Found out by table 2, the desulfurization red mud slag alkali content of the method generation is low,<1%.Desulfurization red mud slag alkali content is low, can keep away
Exempt from the clogging that alkali cpd is caused to the adhesion of preheater conical section caused during clinkersintering, while
Alkali and clinker can be avoided to react and to generate alkali mineral and solid solution, it is to avoid the part occurred due to alkali heat release
The phenomenons such as expansion, structures strain cracking.Meet the raw material requirement for preparing Portland cement.
It is as shown in the table that Portland cement test block obtained in embodiment 1-4 supports lower 3d, 28d intensity in mark.
The desulfurization red mud slag of table 3 prepares each age strength of Portland cement（Unit：MPa）
Found out by table 3, more than 24.5MPa reached using the 3d compression strength of Portland cement obtained in the inventive method,
28d compression strength reaches 48.7 more than MPa, and 3d rupture strengths reach more than 4.4MPa, 28d compression strength reach 6.8MPa with
On, comply fully with the index of Portland cement.
The Portland cement items chemical index of embodiment 1-4 is as shown in the table.
The chemical index of the Portland cement of table 4（%）
Found out by table 4, Portland cement loss on ignition, the SO produced using the invention3Content, content of MgO, Cl-1Content
Meet the Portland cement chemical index of national standard defined.
Portland cement setting time is as shown in the table obtained in embodiment 1-4.
The setting time of the Portland cement of table 5（Unit：min）
Found out by table 5, the Portland cement produced using the invention is pre-hardening, final setting time meets national standard and advised
Fixed Portland cement initial set, final setting time.
The net slurry of the Portland cement normal consistency of embodiment 1-4 is prepared into diameter 70-80mm, thickness respectively to be about
The pat of 10mm is placed in marking maintenance 24h ± 2h under foster environment, through observation pat without defects such as cracking, warpages after maintenance, then
Pat is placed in boiling in boiling tank and boils 180min ± 5min, be cooled to room temperature after taking-up it is observed that without generation crack, bending etc.
Phenomenon.Assert that the cement stability of embodiment 1-4 is qualified.
Shown through above indices, the present invention meets country using the Portland cement that desulfurization red mud slag is produced
Standard.
Claims (9)
1. a kind of method of comprehensive utilization of red mud, it is characterised in that comprise the following steps：1）Red mud is mixed with calcareous dealkalize agent
Close, add water stirring, is made red mud-calcareous dealkalize agent mixing slurry；
2）Red mud-calcareous dealkalize agent mixing slurry and sulfur-containing smoke gas counter current contacting sulfur dioxide absorption in tower, desulfurization fume tower top
Discharge, when the pH value of red mud-calcareous dealkalize agent mixing slurry is close to neutrality, red mud mixing slurry is discharged by bottom of towe, while supplement is new
Red mud-calcareous dealkalize agent mixing slurry.
2. the method for comprehensive utilization of red mud as claimed in claim 1, it is characterised in that step 1）Middle red mud and calcareous dealkalize agent
Mass percent is 85 ~ 95%: 5~15%.
3. the method for comprehensive utilization of red mud as claimed in claim 1 or 2, it is characterised in that calcareous dealkalize agent is calcium oxide, carbon
Sour calcium or calcium hydroxide.
4. the method for comprehensive utilization of the red mud as described in claim any one of 1-3, it is characterised in that step 1）The consumption of reclaimed water
It is red mud and 5-9 times of calcareous dealkalize agent gross mass.
5. the method for comprehensive utilization of the red mud as described in claim any one of 1-3, it is characterised in that step 2）Middle red mud-calcium
Matter dealkalize agent mixing slurry is 12-20 with the liquid-gas ratio of sulfur-containing smoke gas:1（L/m3）.
6. the method for comprehensive utilization of red mud as claimed in claim 1, it is characterised in that red mud mixing slurry carries out separation of solid and liquid,
Solid portion is dried to moisture content and red mud slag is obtained less than 10%；Take the raw material of following mass percent：Red mud slag 45-55%,
Lime stone 35-45%, sandstone 3-8%, flyash 1-3%, mix, and grinding obtains cement slurry, cement slurry calcine cement is ripe
Material；85-95% clinkers and 5-15% mixing materials are mixed by mass percentage, grinding is obtained portland cement.
7. the method for comprehensive utilization of red mud as claimed in claim 6, it is characterised in that the moisture content of cement slurry is less than
0.5%, temperature during calcining is 1300 DEG C -1450 DEG C, and calcination time is 15-20min.
8. the method for comprehensive utilization of red mud as claimed in claim 6, it is characterised in that alkali content in red mud slag<1%th, gypsum contains
Measure is 6 ~ 17%.
9. the method for comprehensive utilization of red mud as claimed in claim 6, it is characterised in that mixing material is flyash or slag.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840584A (en) * | 2018-06-28 | 2018-11-20 | 中国建筑材料科学研究总院有限公司 | The preparation system and method for cement |
| CN110841463A (en) * | 2019-09-29 | 2020-02-28 | 上海交通大学 | Red mud dealkalization method coupled with calcium flue gas desulfurization process |
| US20200299207A1 (en) * | 2019-03-22 | 2020-09-24 | Kunming University Of Science And Technology | Method for ammonium-enhanced flue gas desulfurization by using red mud slurry |
| CN111747665A (en) * | 2020-05-25 | 2020-10-09 | 洲际环境科学研究院(广州)有限公司 | Manufacturing process of finished cement added with Bayer process red mud |
| CN111847921A (en) * | 2020-07-06 | 2020-10-30 | 广州大学 | Low clinker cement and preparation method and application thereof |
| CN113845138A (en) * | 2021-08-06 | 2021-12-28 | 昆明理工大学 | Method for deep desulfurization and full-scale utilization of red mud |
| CN115010334A (en) * | 2022-07-01 | 2022-09-06 | 武汉理工大学 | Method for dealkalizing red mud by using phosphogypsum |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049180A (en) * | 2010-12-14 | 2011-05-11 | 孙业龙 | Coal desulfurizer prepared from red mud and preparation method thereof |
| CN105879605A (en) * | 2016-06-23 | 2016-08-24 | 上海交通大学 | Method of desulfurizing electrolytic aluminum pre-baked anode calcining smoke |
-
2017
- 2017-03-06 CN CN201710126298.4A patent/CN106882932B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049180A (en) * | 2010-12-14 | 2011-05-11 | 孙业龙 | Coal desulfurizer prepared from red mud and preparation method thereof |
| CN105879605A (en) * | 2016-06-23 | 2016-08-24 | 上海交通大学 | Method of desulfurizing electrolytic aluminum pre-baked anode calcining smoke |
Non-Patent Citations (3)
| Title |
|---|
| WANG XIAO, ETAL: "Utilization of Red Mud as Raw Material in the Production of Field Road Cement", 《JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY》 * |
| 杨久俊 等: "常压石灰法处理烧结法赤泥脱碱及其机理研究", 《无机盐工业》 * |
| 杨金姬: "赤泥用于工业烟气脱硫的实验研究", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108840584A (en) * | 2018-06-28 | 2018-11-20 | 中国建筑材料科学研究总院有限公司 | The preparation system and method for cement |
| US20200299207A1 (en) * | 2019-03-22 | 2020-09-24 | Kunming University Of Science And Technology | Method for ammonium-enhanced flue gas desulfurization by using red mud slurry |
| US11535572B2 (en) * | 2019-03-22 | 2022-12-27 | Kunming University Of Science And Technology | Method for ammonium-enhanced flue gas desulfurization by using red mud slurry |
| CN110841463A (en) * | 2019-09-29 | 2020-02-28 | 上海交通大学 | Red mud dealkalization method coupled with calcium flue gas desulfurization process |
| CN111747665A (en) * | 2020-05-25 | 2020-10-09 | 洲际环境科学研究院(广州)有限公司 | Manufacturing process of finished cement added with Bayer process red mud |
| CN111847921A (en) * | 2020-07-06 | 2020-10-30 | 广州大学 | Low clinker cement and preparation method and application thereof |
| CN113845138A (en) * | 2021-08-06 | 2021-12-28 | 昆明理工大学 | Method for deep desulfurization and full-scale utilization of red mud |
| CN113845138B (en) * | 2021-08-06 | 2023-11-24 | 昆明理工大学 | Method for deep desulfurization and full quantitative utilization of red mud |
| CN115010334A (en) * | 2022-07-01 | 2022-09-06 | 武汉理工大学 | Method for dealkalizing red mud by using phosphogypsum |
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