CN109354051A - A method for preparing calcium carbonate in the mirabilite type brine purification process by using calcium carbide slag to replace lime - Google Patents
A method for preparing calcium carbonate in the mirabilite type brine purification process by using calcium carbide slag to replace lime Download PDFInfo
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- CN109354051A CN109354051A CN201811468804.9A CN201811468804A CN109354051A CN 109354051 A CN109354051 A CN 109354051A CN 201811468804 A CN201811468804 A CN 201811468804A CN 109354051 A CN109354051 A CN 109354051A
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- carbide slag
- brine
- calcium carbonate
- lime
- reaction
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 65
- 239000002893 slag Substances 0.000 title claims abstract description 59
- 239000012267 brine Substances 0.000 title claims abstract description 43
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 title claims abstract description 42
- 238000000746 purification Methods 0.000 title claims abstract description 34
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 33
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 28
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 28
- 239000004571 lime Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000005997 Calcium carbide Substances 0.000 title claims abstract 9
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract 9
- 239000010446 mirabilite Substances 0.000 title claims abstract 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 title abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 35
- 238000003860 storage Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000003546 flue gas Substances 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000013505 freshwater Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 239000012141 concentrate Substances 0.000 claims abstract 2
- 239000002002 slurry Substances 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000032683 aging Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 4
- 238000011403 purification operation Methods 0.000 claims 7
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 claims 6
- WBHQBSYUUJJSRZ-UHFFFAOYSA-N sodium;sulfuric acid Chemical compound [H+].[H+].[Na+].[O-]S([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-N 0.000 claims 3
- 238000005065 mining Methods 0.000 claims 1
- 238000010517 secondary reaction Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 22
- 229910052925 anhydrite Inorganic materials 0.000 description 15
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 15
- 239000000920 calcium hydroxide Substances 0.000 description 15
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 15
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 15
- 239000000126 substance Substances 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 229910052736 halogen Inorganic materials 0.000 description 12
- 150000002367 halogens Chemical class 0.000 description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 description 11
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 10
- 239000007832 Na2SO4 Substances 0.000 description 10
- 229910052938 sodium sulfate Inorganic materials 0.000 description 10
- 150000003839 salts Chemical class 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 238000007670 refining Methods 0.000 description 8
- 238000006467 substitution reaction Methods 0.000 description 7
- 239000011575 calcium Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 5
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 241001131796 Botaurus stellaris Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- -1 papermaking Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000606 toothpaste Substances 0.000 description 1
- 229940034610 toothpaste Drugs 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
本发明公开了一种利用电石渣替代石灰在芒硝型卤水净化工序中制备碳酸钙的方法，在采卤生产过程中，将电石渣与水混合加入混合装置后恒温搅拌，经方孔筛过滤出渣，再对电石渣精浆进行一定时间陈化，再经输送泵注入储存池内，并与储存池内的淡水同时泵入连通卤井溶腔内；在卤井溶腔内，电石渣精浆与可溶性杂质完成一级净化反应；将一级净化反应后获得的卤水泵入二级反应桶内，向内通入烟气，完成二级净化反应，固液分离后，滤渣干燥粉碎即为碳酸钙。本发明的有益效果是使用价格低廉的电石渣代替石灰，并在二级净化反应后获得产品碳酸钙，降低生产运行成本。同时，可实现大宗固体废物电石渣的高效高值资源化利用，经济、环境和社会效益显著。
The invention discloses a method for preparing calcium carbonate in the mirabilite type brine purification process by using calcium carbide slag to replace lime. Then, the calcium carbide slag concentrate is aged for a certain period of time, and then injected into the storage tank by the transfer pump, and pumped into the brine well cavity connected with the fresh water in the storage tank at the same time; in the brine well cavity, the calcium carbide slag slurry and Soluble impurities complete the first-level purification reaction; the brine obtained after the first-level purification reaction is pumped into the second-level reaction barrel, and the flue gas is introduced into it to complete the second-level purification reaction. After solid-liquid separation, the filter residue is dried and pulverized to become calcium carbonate . The beneficial effect of the invention is that low-cost calcium carbide slag is used instead of lime, and the product calcium carbonate is obtained after the secondary purification reaction, thereby reducing the production and operation cost. At the same time, the high-efficiency and high-value resource utilization of bulk solid waste carbide slag can be realized, and the economic, environmental and social benefits are remarkable.
Description
Technical field
The present invention relates to a kind of sides for preparing calcium carbonate in Galuber's salt type brine cleaning procedure using carbide slag substitution lime
Method.
Background technique
The purpose of bittern purifying is exactly the impurity removed in brine, obtains qualified purification brine.Purify Galuber's salt type brine
A kind of most common method is exactly " lime-flue gas " method, and technological principle is divided into two steps: the first step, is first added in brine
Lime generates OH-Remove the Mg in brine2+Be used for second step；
CaO+H2O= Ca(OH)2
Ca(OH)2+MgSO4= Mg (OH)2↓ + CaSO4
Ca(OH)2+Na2SO4=2NaOH + CaSO4
Second step is passed through flue gas in the clarified solution after the first step, utilizes the CO in flue gas2And OH-Reaction generates Na2CO3, then
With Ca2+Reaction generates CaCO3Precipitating removes Ca to reach2+Purpose；
CO2+2NaOH=Na2CO3+H2O
Na2CO3+ CaSO4=CaCO3↓+ Na2SO4
Wherein, lime role is that enough OH are generated in brine-, using replacing carbide slag with lime, due to carbide slag
Cost can almost ignore compared with lime, cost advantage is obvious, and carbide slag realize waste residue recycle, reach environmental protection mesh
's.
The production and use of calcium carbonate and human lives are closely bound up, currently, calcium carbonate is widely used in coating, plastics, oil
Ink, putty, plastic film, chemical fibre, adhesive, sealant, daily-use chemical industry, medicine, rubber, papermaking, toothpaste, cosmetics, food,
The fields such as weaving, building materials, feed.Accordingly, it is desirable to produce calcium carbonate constantly to guarantee the normal life needs of the mankind.
Summary of the invention
Calcium carbonate is prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime the present invention provides a kind of
Method.
The technical scheme adopted by the invention is that:
A method of calcium carbonate being prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime, according to the following steps
It carries out:
(1) in adopting halogen production process, constant temperature is stirred after carbide slag is mixed addition mixing arrangement with water, is filtered out through square hole screen
Slag, then certain time ageing is carried out to carbide slag refining, then inject in storage pool through delivery pump, and same with the fresh water in storage pool
When be pumped into connection halogen well it is molten intracavitary；
(2) molten intracavitary in halogen well, during water-soluble, soluble impurity also dissolves ore bed simultaneously, into solution, soluble impurity
With carbide slag or carbide slag, lime mixture in Ca (OH)2It chemically reacts, generates slightly solubility substance Mg (OH)2, and
The NaOH that concentration is 0.5 ~ 1.5 g/L, the OH in brine are obtained in brine-The concentration of ion is 0.1 ~ 0.7 g/L, completes one
Grade purification reaction.Wherein, the chemical equation of first class purification reaction are as follows:
CaO+H2O= Ca(OH)2
Ca(OH)2+MgSO4= Mg (OH)2↓ + CaSO4
Ca(OH)2+Na2SO4=2NaOH + CaSO4
(3) brine obtained after reacting first class purification is pumped into second order reaction bucket, opens inwards into flue gas, and it is net to complete second level brine
Change reaction.The chemical equation of secondary purification reaction are as follows:
CO2+2NaOH=Na2CO3+H2O
Na2CO3+ CaSO4=CaCO3↓+ Na2SO4
(4) it after secondary purification reaction, is separated by solid-liquid separation, it is calcium carbonate that filter residue and drying, which crushes,.
In a preferred embodiment of the invention, in the step (1), the proportion of carbide slag and water is 5 ~ 50% ratios
95~50%。
In a preferred embodiment of the invention, in the step (1), carbide slag is stirred with constant temperature in water mixing device
Temperature control is mixed at 30 ~ 80 DEG C, 1 ~ 5 h of time.
In a preferred embodiment of the invention, in the step (1), square hole screen used is 300 ~ 500 mesh.
In a preferred embodiment of the invention, in the step (1), carbide slag refining digestion time is 1 ~ 24
h。
The present invention has the advantages that the present invention secondary purification reaction after obtain product calcium carbonate, reduce production run at
This；The present invention uses cheap replacing carbide slag with lime, has not only reduced production run cost, but also makes large solid waste electricity
The efficient high level resource utilization of rock ballast, economy, environmental and social benefits are significant.
Detailed description of the invention
Fig. 1, which is that the present invention is a kind of, substitutes the side that lime prepares calcium carbonate in Galuber's salt type brine cleaning procedure using carbide slag
Method process flow diagram.
Specific embodiment
By following specific embodiments, invention is further described in detail.
Embodiment 1:
A kind of method that calcium carbonate being prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime of the present embodiment has
Body the following steps are included:
(1) in adopting halogen production process, proportion is added after mixing arrangement for 5 ~ 50% carbide slag and 95 ~ 50% water 30 ~ 80
DEG C constant temperature stirs 1 ~ 5 h, slags tap through the filtering of 300 ~ 500 mesh square hole screens, carries out 1 ~ 24 h ageing, ageing to filtering carbide slag refining
Carbide slag refining is again through in delivery pump injection storage pool afterwards, and is pumped into the fresh water in storage pool that be connected to halogen well molten intracavitary simultaneously；
(2) molten intracavitary in halogen well, during water-soluble, soluble impurity also dissolves ore bed simultaneously, into solution, soluble impurity
With carbide slag or carbide slag, lime mixture in Ca (OH)2It chemically reacts, generates slightly solubility substance Mg (OH)2, and
The NaOH that concentration is 0.6 ~ 1.3 g/L, the OH in brine are obtained in brine-The concentration of ion is 0.2 ~ 0.6g/L, completes one
Grade purification reaction.Wherein, the chemical equation of first class purification reaction are as follows:
CaO+H2O= Ca(OH)2
Ca(OH)2+MgSO4= Mg (OH)2↓ + CaSO4
Ca(OH)2+Na2SO4=2NaOH + CaSO4
(3) brine obtained after reacting first class purification is pumped into second order reaction bucket, opens inwards into flue gas, and it is net to complete second level brine
Change reaction.The chemical equation of secondary purification reaction are as follows:
CO2+2NaOH=Na2CO3+H2O
Na2CO3+ CaSO4=CaCO3↓+ Na2SO4
(4) it after secondary purification reaction, is separated by solid-liquid separation, it is calcium carbonate that filter residue and drying, which crushes,.
Embodiment 2:
A kind of method that calcium carbonate being prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime of the present embodiment has
Body the following steps are included:
(1) in adopting halogen production process, proportion is added after mixing arrangement for 5 ~ 30% carbide slag and 95 ~ 70% water 30 ~ 70
DEG C constant temperature stirs 1 ~ 4 h, slags tap through the filtering of 300 ~ 400 mesh square hole screens, carries out 1 ~ 10 h ageing, ageing to filtering carbide slag refining
Carbide slag refining is again through in delivery pump injection storage pool afterwards, and is pumped into the fresh water in storage pool that be connected to halogen well molten intracavitary simultaneously；
(2) molten intracavitary in halogen well, during water-soluble, soluble impurity also dissolves ore bed simultaneously, into solution, soluble impurity
With carbide slag or carbide slag, lime mixture in Ca (OH)2It chemically reacts, generates slightly solubility substance Mg (OH)2, and
The NaOH that concentration is 0.5 ~ 1.5 g/L, the OH in brine are obtained in brine-The concentration of ion is 0.1 ~ 0.7g/L, completes one
Grade purification reaction.Wherein, the chemical equation of first class purification reaction are as follows:
CaO+H2O= Ca(OH)2
Ca(OH)2+MgSO4= Mg (OH)2↓ + CaSO4
Ca(OH)2+Na2SO4=2NaOH + CaSO4
(3) brine obtained after reacting first class purification is pumped into second order reaction bucket, opens inwards into flue gas, and it is net to complete second level brine
Change reaction.The chemical equation of secondary purification reaction are as follows:
CO2+2NaOH=Na2CO3+H2O
Na2CO3+ CaSO4=CaCO3↓+ Na2SO4
(4) it after secondary purification reaction, is separated by solid-liquid separation, it is calcium carbonate that filter residue and drying, which crushes,.
Embodiment 3:
A kind of method that calcium carbonate being prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime of the present embodiment has
Body the following steps are included:
(1) in adopting halogen production process, proportion is added after mixing arrangement for 10 ~ 50% carbide slag and 90 ~ 50% water 50 ~ 80
DEG C constant temperature stirs 3 ~ 5 h, slags tap through the filtering of 300 ~ 500 mesh square hole screens, carries out 10 ~ 24 h ageing to filtering carbide slag refining, old
Carbide slag refining injects in storage pool through delivery pump again after change, and is pumped into simultaneously with the fresh water in storage pool and is connected to the molten chamber of halogen well
It is interior；
(2) molten intracavitary in halogen well, during water-soluble, soluble impurity also dissolves ore bed simultaneously, into solution, soluble impurity
With carbide slag or carbide slag, lime mixture in Ca (OH)2It chemically reacts, generates slightly solubility substance Mg (OH)2, and
The NaOH that concentration is 0.55 ~ 1.45 g/L, the OH in brine are obtained in brine-The concentration of ion is 0.12 ~ 0.65g/L, complete
It is reacted at first class purification.Wherein, the chemical equation of first class purification reaction are as follows:
CaO+H2O= Ca(OH)2
Ca(OH)2+MgSO4= Mg (OH)2↓ + CaSO4
Ca(OH)2+Na2SO4=2NaOH + CaSO4
(3) brine obtained after reacting first class purification is pumped into second order reaction bucket, opens inwards into flue gas, and it is net to complete second level brine
Change reaction.The chemical equation of secondary purification reaction are as follows:
CO2+2NaOH=Na2CO3+H2O
Na2CO3+ CaSO4=CaCO3↓+ Na2SO4
(4) it after secondary purification reaction, is separated by solid-liquid separation, it is calcium carbonate that filter residue and drying, which crushes,.
The above is only a preferred embodiment of the present invention, is not intended to restrict the invention, it is clear that those skilled in the art can
To carry out various changes, modification without departing from the spirit and scope of the present invention to the present invention.If to these modifications of the invention
Within the scope of the claims of the present invention and its equivalent technology with modification, it all belongs to the scope of protection of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811468804.9A CN109354051A (en) | 2018-12-03 | 2018-12-03 | A method for preparing calcium carbonate in the mirabilite type brine purification process by using calcium carbide slag to replace lime |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811468804.9A CN109354051A (en) | 2018-12-03 | 2018-12-03 | A method for preparing calcium carbonate in the mirabilite type brine purification process by using calcium carbide slag to replace lime |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109354051A true CN109354051A (en) | 2019-02-19 |
Family
ID=65330886
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|---|---|---|---|
| CN201811468804.9A Pending CN109354051A (en) | 2018-12-03 | 2018-12-03 | A method for preparing calcium carbonate in the mirabilite type brine purification process by using calcium carbide slag to replace lime |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745844A (en) * | 2019-11-29 | 2020-02-04 | 江西晶昊盐化有限公司 | Method for purifying brine by using ammonia-soda waste residue and waste liquid mixed liquor and flue gas |
| CN112142175A (en) * | 2020-10-16 | 2020-12-29 | 德州实华化工有限公司 | Treatment process and device for purifying gypsum type brine by using calcium carbide slurry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5443897A (en) * | 1977-09-14 | 1979-04-06 | Denki Kagaku Kogyo Kk | Preparation of light calcium carbonate |
| CN101020579A (en) * | 2006-03-27 | 2007-08-22 | 中国人民解放军国防科学技术大学 | A method for preparing high-purity light calcium carbonate micropowder from carbide slag |
| CN101264920A (en) * | 2008-04-17 | 2008-09-17 | 贵州大学 | A method for preparing fine and ultrafine calcium carbonate with different crystal forms from calcium carbide slag |
| CN102515237A (en) * | 2011-12-26 | 2012-06-27 | 新疆天山水泥股份有限公司 | Method for preparing nanometer CaCO3 from calcium carbide slag through ultrasonic process |
| CN104477940A (en) * | 2014-12-02 | 2015-04-01 | 湖南省湘衡盐化有限责任公司 | Brine purification technique by carbide slag/lime-flue gas process |
-
2018
- 2018-12-03 CN CN201811468804.9A patent/CN109354051A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5443897A (en) * | 1977-09-14 | 1979-04-06 | Denki Kagaku Kogyo Kk | Preparation of light calcium carbonate |
| CN101020579A (en) * | 2006-03-27 | 2007-08-22 | 中国人民解放军国防科学技术大学 | A method for preparing high-purity light calcium carbonate micropowder from carbide slag |
| CN101264920A (en) * | 2008-04-17 | 2008-09-17 | 贵州大学 | A method for preparing fine and ultrafine calcium carbonate with different crystal forms from calcium carbide slag |
| CN102515237A (en) * | 2011-12-26 | 2012-06-27 | 新疆天山水泥股份有限公司 | Method for preparing nanometer CaCO3 from calcium carbide slag through ultrasonic process |
| CN104477940A (en) * | 2014-12-02 | 2015-04-01 | 湖南省湘衡盐化有限责任公司 | Brine purification technique by carbide slag/lime-flue gas process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745844A (en) * | 2019-11-29 | 2020-02-04 | 江西晶昊盐化有限公司 | Method for purifying brine by using ammonia-soda waste residue and waste liquid mixed liquor and flue gas |
| CN112142175A (en) * | 2020-10-16 | 2020-12-29 | 德州实华化工有限公司 | Treatment process and device for purifying gypsum type brine by using calcium carbide slurry |
| CN112142175B (en) * | 2020-10-16 | 2022-12-06 | 德州实华化工有限公司 | Treatment process and device for purifying gypsum type brine by using calcium carbide slurry |
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Application publication date: 20190219 |