CN109354051A - A method of calcium carbonate is prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime - Google Patents

A method of calcium carbonate is prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime Download PDF

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Publication number
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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China
Prior art keywords
carbide slag
calcium carbonate
galuber
salt type
lime
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CN201811468804.9A
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Chinese (zh)
Inventor
蒋伍玖
刘洋
杨颖群
付伟伟
邹建陵
杨建�
柳科
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Hengyang Normal University
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Hengyang Normal University
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    • 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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a kind of methods that calcium carbonate is prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime, in adopting halogen production process, constant temperature stirs after carbide slag is mixed addition mixing arrangement with water, slag is filtered out through square hole screen, certain time ageing is carried out to carbide slag refining again, again through in delivery pump injection storage pool, and it is pumped into the fresh water in storage pool that be connected to halogen well molten intracavitary simultaneously；Molten intracavitary in halogen well, carbide slag refining is completed first class purification with soluble impurity and is reacted；The brine obtained after first class purification is reacted is pumped into second order reaction bucket, opens inwards into flue gas, is completed secondary purification and is reacted, and after separation of solid and liquid, it is calcium carbonate that filter residue and drying, which crushes,.The beneficial effects of the invention are as follows cheap replacing carbide slag with lime, and the acquisition product calcium carbonate after secondary purification reaction is used, production run cost is reduced.Simultaneously, it can be achieved that the efficient high level resource utilization of large solid waste carbide slag, economy, environmental and social benefits are significant.

Description

It is a kind of to prepare carbonic acid in Galuber's salt type brine cleaning procedure using carbide slag substitution lime The method of calcium
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)

1. a kind of method for preparing calcium carbonate in Galuber's salt type brine cleaning procedure using carbide slag substitution lime, specific method Are as follows: in adopting halogen production process, constant temperature is stirred after carbide slag is mixed addition mixing arrangement with water, filters out slag through square hole screen, Certain time ageing is carried out to carbide slag refining again, then is injected in storage pool through delivery pump, and simultaneously with the fresh water in storage pool It is molten intracavitary to be pumped into connection halogen well；Molten intracavitary in halogen well, carbide slag refining is completed first class purification with soluble impurity and is reacted；By level-one The brine obtained after purification reaction is pumped into second order reaction bucket, opens inwards into flue gas, is completed secondary purification reaction, is separated by solid-liquid separation Afterwards, it is calcium carbonate that filter residue and drying, which crushes,.
2. a kind of as described in claim 1 prepare calcium carbonate in Galuber's salt type brine cleaning procedure using carbide slag substitution lime Method, it is characterised in that: carbide slag is used in Galuber's salt type brine cleaning procedure, original Galuber's salt type brine purification process is substituted Lime in " lime-flue gas " method.
3. a kind of as described in claim 1 prepare calcium carbonate in Galuber's salt type brine cleaning procedure using carbide slag substitution lime Method, it is characterised in that: the proportion of carbide slag and water be 5 ~ 50% to 95 ~ 50%.
4. a kind of as described in claim 1 prepare carbonic acid in Galuber's salt type brine cleaning procedure using carbide slag substitution lime The method of calcium, it is characterised in that: the control of constant temperature whipping temp is at 30 ~ 80 DEG C in carbide slag and water mixing device, 1 ~ 5 h of time.
5. a kind of as described in claim 1 prepare calcium carbonate in Galuber's salt type brine cleaning procedure using carbide slag substitution lime Method, it is characterised in that: square hole screen used be 300 ~ 500 mesh.
6. a kind of as described in claim 1 prepare calcium carbonate in Galuber's salt type brine cleaning procedure using carbide slag substitution lime Method, it is characterised in that: carbide slag refining digestion time be 1 ~ 24 h.
7. a kind of as described in claim 1 prepare calcium carbonate in Galuber's salt type brine cleaning procedure using carbide slag substitution lime Method, it is characterised in that: secondary purification reaction after obtain product calcium carbonate.
CN201811468804.9A 2018-12-03 2018-12-03 A method of calcium carbonate is prepared in Galuber's salt type brine cleaning procedure using carbide slag substitution lime Pending CN109354051A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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 Process of preparing high purity light calcium carbonate fine powder with carbide residue
CN101264920A (en) * 2008-04-17 2008-09-17 贵州大学 Method for preparing micro-fine and ultra-fine calcium carbonate of different crystal forms from 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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 Process of preparing high purity light calcium carbonate fine powder with carbide residue
CN101264920A (en) * 2008-04-17 2008-09-17 贵州大学 Method for preparing micro-fine and ultra-fine calcium carbonate of different crystal forms from 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)

* Cited by examiner, † Cited by third party
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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