CN108840353A - A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous - Google Patents
A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous Download PDFInfo
- Publication number
- CN108840353A CN108840353A CN201810875630.1A CN201810875630A CN108840353A CN 108840353 A CN108840353 A CN 108840353A CN 201810875630 A CN201810875630 A CN 201810875630A CN 108840353 A CN108840353 A CN 108840353A
- Authority
- CN
- China
- Prior art keywords
- mother liquor
- salt
- lime
- making mother
- magnesium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012452 mother liquor Substances 0.000 title claims abstract description 103
- 235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 48
- 235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 48
- 239000004571 lime Substances 0.000 title claims abstract description 48
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 239000011777 magnesium Substances 0.000 title claims abstract description 29
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 29
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000013505 freshwater Substances 0.000 claims abstract description 7
- 239000000292 calcium oxide Substances 0.000 claims abstract description 5
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 239000011268 mixed slurry Substances 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 239000012267 brine Substances 0.000 claims description 4
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 4
- 239000000347 magnesium hydroxide Substances 0.000 claims description 4
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 241000040710 Chela Species 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 11
- 239000011591 potassium Substances 0.000 description 11
- 229910052700 potassium Inorganic materials 0.000 description 11
- 239000000243 solution Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 4
- 239000013535 sea water Substances 0.000 description 3
- 241001131796 Botaurus stellaris Species 0.000 description 2
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001414 potassium ion Inorganic materials 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
- C01D3/16—Purification by precipitation or adsorption
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/14—Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous, include the following steps：S1, salt-making mother liquor is pumped to common screen pack, preliminary filtering is carried out to salt-making mother liquor, then salt-making mother liquor flows through mother liquor filter I, is then collected into holding vessel, demagging agent is added into holding vessel, the salt-making mother liquor in holding vessel is stirred when being added；S3, it will be crushed 1-2 minutes in quick lime addition crusher, the powdered lime of 120-160 mesh become, by powdered lime and fresh water according to quality：Volume=1-1.3kg:0.6-1.2L mixing, mixed process have a large amount of heat to release, and are white lime after natural cooling；A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous provided by the invention, compared with traditional technology, this method passes through the use of mother liquor filter I and mother liquor filter II, may filter that a large amount of impurity in salt-making mother liquor, is conducive to the demagging efficiency of subsequent step；Demagging agent is added into holding vessel, removes in salt-making mother liquor 90% magnesium.
Description
Technical field
The invention belongs to salt-making mother liquor lime demagging technical fields, more specifically more particularly to a kind of salt-making mother liquor stone
Grey technology for removal of magnesium from phosphorous.
Background technique
With the mother liquor (bittern) after seawater, natural bittern salt manufacturing for raw material, a variety of important chemical products are produced.In seawater
There is potassium resource abundant, using potassium ion exchanger, by inhaling potassium, elution process can obtain the higher solution-richness of potassium content
Potassium solution, then rich potassium solution is evaporated, is crystallized, separates and can produce sylvite.
But because containing magnesium in seawater, it will affect the concentration effect of potassium ion exchanger, the magnesium in rich potassium solution will cause
The quality decline of final obtained potassium product.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of salt-making mother liquor lime proposed removes
Magnesium technique.
To achieve the above object, the present invention provides the following technical solutions：
A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous, includes the following steps：
S1, salt-making mother liquor is pumped to common screen pack, preliminary filtering is carried out to salt-making mother liquor, then salt-making mother liquor stream
It through mother liquor filter I, is then collected into holding vessel, demagging agent is added into holding vessel, when being added to the system in holding vessel
Salt mother liquor is stirred；
S2, salt-making mother liquor is extracted to mother liquor filter II from holding vessel, removes in salt-making mother liquor 90% magnesium；
S3, it will be crushed 1-2 minutes in quick lime addition crusher, the powdered lime of 120-160 mesh become, by powdered lime
With fresh water according to quality：Volume=1-1.3kg:0.6-1.2L mixing, mixed process have a large amount of heat to release, after natural cooling
For white lime；
S4, by the resulting white lime of step S3 and step S2 treated salt-making mother liquor according to quality：Volume=1-1.5kg:2.5-
The ratio of 2.8L mixes, and mixed slurry is added to the container, and obtains lime slurry after being stirred 10-20 minutes with blender；
S5, by lime slurry obtained in step S4 and step S2 treated salt-making mother liquor according to volume ratio=2L-7L：4L-9L
Ratio mixing, obtain mixed slurry, mixed slurry pours into container, with blender stir 20-30 minute, sufficiently react after it is quiet
It sets 1-2 hours；
S6, it is settled completely to magnesium hydroxide, calcium sulfate and with water-insoluble solid, supernatant liquor measures pH value with extensive PH test paper
Greater than 10, which is put into into centrifuge centrifugal treating, the brine after obtaining demagging, solid sediment is discarded.
Preferably, the mother liquor filter I in the step S1 uses SJY-IFUS-B series mother liquor filter, the step
II SJY-IFUS-D series mother liquor filter of mother liquor filter in S2.
Preferably, it needs for the salt-making mother liquor in holding vessel to be heated to before demagging agent being added into holding vessel in the step S1
40-60 DEG C, and keep the temperature 5-10 minutes.
Preferably, demagging agent still needs to continue stirring 2-3 minutes after being added to holding vessel in the step S1.
Preferably, 1m in the step S13Salt-making mother liquor need to use the demagging agent of 35-50kg.
Preferably, the demagging agent be highly acid sun demagging agent, faintly acid sun demagging agent, macroporous type sun demagging agent or chela and
Resin.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of salt-making mother liquor lime demagging work provided by the invention
Skill, compared with traditional technology, this method solve the quality declines that the magnesium in rich potassium solution will cause final obtained potassium product
The problem of；
Equipment and material needed for the present invention are easy to get, at low cost, and process flow is simple, are conducive to promote and apply；
By the use of mother liquor filter I and mother liquor filter II, it may filter that a large amount of impurity in salt-making mother liquor, be conducive to subsequent step
Rapid demagging efficiency；
Demagging agent is added into holding vessel, the salt-making mother liquor in holding vessel is stirred when being added, removes in salt-making mother liquor
90% magnesium；
Lime slurry is produced with step S2 treated salt-making mother liquor, lime slurry is greatly reduced than traditional technology for removal of magnesium from phosphorous and matches
The fresh water dosage of process processed.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Every other embodiment obtained is put, shall fall within the protection scope of the present invention.
Embodiment 1
A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous, includes the following steps：
S1, salt-making mother liquor is pumped to common screen pack, preliminary filtering is carried out to salt-making mother liquor, then salt-making mother liquor stream
It through mother liquor filter I, is then collected into holding vessel, demagging agent is added into holding vessel, when being added to the system in holding vessel
Salt mother liquor is stirred；
S2, salt-making mother liquor is extracted to mother liquor filter II from holding vessel, removes in salt-making mother liquor 90% magnesium；
S3, it will be crushed 1 minute in quick lime addition crusher, the powdered lime of 120 mesh become, by powdered lime and fresh water
According to quality：Volume=1kg:0.8L mixing, mixed process have a large amount of heat to release, and are white lime after natural cooling；
S4, by the resulting white lime of step S3 and step S2 treated salt-making mother liquor according to quality：Volume=1kg:The ratio of 2.5L
Example mixing, mixed slurry are added to the container, and obtain lime slurry after ten minutes with blender stirring；
S5, by lime slurry obtained in step S4 and step S2 treated salt-making mother liquor according to volume ratio=2L：The ratio of 4L
Mixing, obtains mixed slurry, and mixed slurry pours into container, is stirred 20 minutes with blender, sufficiently stands 1 hour after reaction；
S6, it is settled completely to magnesium hydroxide, calcium sulfate and with water-insoluble solid, supernatant liquor measures pH value with extensive PH test paper
Greater than 10, which is put into into centrifuge centrifugal treating, the brine after obtaining demagging, solid sediment is discarded.
Specifically, the mother liquor filter I in the step S1 uses SJY-IFUS-B series mother liquor filter, the step
II SJY-IFUS-D series mother liquor filter of mother liquor filter in S2.
Specifically, needing for the salt-making mother liquor in holding vessel to be heated to before demagging agent is added into holding vessel in the step S1
40 DEG C, and keep the temperature 6 minutes.
Specifically, demagging agent still needs to continue stirring 2 minutes after being added to holding vessel in the step S1.
Specifically, 1m in the step S13Salt-making mother liquor need to use the demagging agent of 35kg.
Specifically, the demagging agent is highly acid sun demagging agent.
Embodiment 2
A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous, includes the following steps：
S1, salt-making mother liquor is pumped to common screen pack, preliminary filtering is carried out to salt-making mother liquor, then salt-making mother liquor stream
It through mother liquor filter I, is then collected into holding vessel, demagging agent is added into holding vessel, when being added to the system in holding vessel
Salt mother liquor is stirred；
S2, salt-making mother liquor is extracted to mother liquor filter II from holding vessel, removes in salt-making mother liquor 90% magnesium；
S3, it will be crushed 2 minutes in quick lime addition crusher, the powdered lime of 160 mesh become, by powdered lime and fresh water
According to quality：Volume=1kg:0.6L mixing, mixed process have a large amount of heat to release, and are white lime after natural cooling；
S4, by the resulting white lime of step S3 and step S2 treated salt-making mother liquor according to quality：Volume=1.5kg:2.8L
Ratio mixing, mixed slurry are added to the container, and obtain lime slurry after twenty minutes with blender stirring；
S5, by lime slurry obtained in step S4 and step S2 treated salt-making mother liquor according to volume ratio=7L：The ratio of 9L
Mixing, obtains mixed slurry, and mixed slurry pours into container, is stirred 20 minutes with blender, sufficiently stands 2 hours after reaction；
S6, it is settled completely to magnesium hydroxide, calcium sulfate and with water-insoluble solid, supernatant liquor measures pH value with extensive PH test paper
Greater than 10, which is put into into centrifuge centrifugal treating, the brine after obtaining demagging, solid sediment is discarded.
Specifically, the mother liquor filter I in the step S1 uses SJY-IFUS-B series mother liquor filter, the step
II SJY-IFUS-D series mother liquor filter of mother liquor filter in S2.
Specifically, needing for the salt-making mother liquor in holding vessel to be heated to before demagging agent is added into holding vessel in the step S1
50 DEG C, and keep the temperature 10 minutes.
Specifically, demagging agent still needs to continue stirring 3 minutes after being added to holding vessel in the step S1.
Specifically, 1m in the step S13Salt-making mother liquor need to use the demagging agent of 50kg.
Specifically, the demagging agent is macroporous type sun demagging agent.
In summary：A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous provided by the invention, compared with traditional technology, this method solution
Magnesium in rich potassium of having determined solution will cause the problem of quality decline of final obtained potassium product；
Equipment and material needed for the present invention are easy to get, at low cost, and process flow is simple, are conducive to promote and apply；
By the use of mother liquor filter I and mother liquor filter II, it may filter that a large amount of impurity in salt-making mother liquor, be conducive to subsequent step
Rapid demagging efficiency；
Demagging agent is added into holding vessel, the salt-making mother liquor in holding vessel is stirred when being added, removes in salt-making mother liquor
90% magnesium；
Lime slurry is produced with step S2 treated salt-making mother liquor, lime slurry is greatly reduced than traditional technology for removal of magnesium from phosphorous and matches
The fresh water dosage of process processed.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (6)
1. a kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous, it is characterised in that：Include the following steps：
S1, salt-making mother liquor is pumped to common screen pack, preliminary filtering is carried out to salt-making mother liquor, then salt-making mother liquor stream
It through mother liquor filter I, is then collected into holding vessel, demagging agent is added into holding vessel, when being added to the system in holding vessel
Salt mother liquor is stirred；
S2, salt-making mother liquor is extracted to mother liquor filter II from holding vessel, removes in salt-making mother liquor 90% magnesium；
S3, it will be crushed 1-2 minutes in quick lime addition crusher, the powdered lime of 120-160 mesh become, by powdered lime
With fresh water according to quality：Volume=1-1.3kg:0.6-1.2L mixing, mixed process have a large amount of heat to release, after natural cooling
For white lime；
S4, by the resulting white lime of step S3 and step S2 treated salt-making mother liquor according to quality：Volume=1-1.5kg:2.5-
The ratio of 2.8L mixes, and mixed slurry is added to the container, and obtains lime slurry after being stirred 10-20 minutes with blender；
S5, by lime slurry obtained in step S4 and step S2 treated salt-making mother liquor according to volume ratio=2L-7L：4L-9L
Ratio mixing, obtain mixed slurry, mixed slurry pours into container, with blender stir 20-30 minute, sufficiently react after it is quiet
It sets 1-2 hours；
S6, it is settled completely to magnesium hydroxide, calcium sulfate and with water-insoluble solid, supernatant liquor measures pH value with extensive PH test paper
Greater than 10, which is put into into centrifuge centrifugal treating, the brine after obtaining demagging, solid sediment is discarded.
2. a kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous described in claim 1, it is characterised in that：Mother liquor mistake in the step S1
Filter I uses SJY-IFUS-B series mother liquor filter, II SJY-IFUS-D series mother liquor of mother liquor filter in the step S2
Filter.
3. a kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous described in claim 1, it is characterised in that：To holding vessel in the step S1
It needs the salt-making mother liquor in holding vessel being heated to 40-60 DEG C before middle addition demagging agent, and keeps the temperature 5-10 minutes.
4. a kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous described in claim 1, it is characterised in that：Demagging agent adds in the step S1
It still needs to continue stirring 2-3 minutes after entering to holding vessel.
5. a kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous described in claim 1, it is characterised in that：1m in the step S13Salt manufacturing is female
Liquid need to use the demagging agent of 35-50kg.
6. a kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous described in claim 1, it is characterised in that：The demagging agent is highly acid sun
Demagging agent, faintly acid sun demagging agent, macroporous type sun demagging agent or chela and resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810875630.1A CN108840353A (en) | 2018-08-03 | 2018-08-03 | A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810875630.1A CN108840353A (en) | 2018-08-03 | 2018-08-03 | A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108840353A true CN108840353A (en) | 2018-11-20 |
Family
ID=64195371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810875630.1A Pending CN108840353A (en) | 2018-08-03 | 2018-08-03 | A kind of salt-making mother liquor lime technology for removal of magnesium from phosphorous |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108840353A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963521A (en) * | 2019-12-30 | 2020-04-07 | 自贡市轻工业设计研究院有限责任公司 | Extraction process of calcium chloride in yellow brine salt-making mother liquor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159423A (en) * | 1996-03-11 | 1997-09-17 | 蔡远辽 | Technology for producing high-strength gypsum by using bittern |
| CN101139101A (en) * | 2007-06-23 | 2008-03-12 | 中盐制盐工程技术研究院 | Method for removing magnesium ion and calcium ion in middle-degree brine in salt-field |
| CN102642849A (en) * | 2012-05-14 | 2012-08-22 | 河北工业大学 | Method for removing magnesium in seawater potassium extraction process |
-
2018
- 2018-08-03 CN CN201810875630.1A patent/CN108840353A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1159423A (en) * | 1996-03-11 | 1997-09-17 | 蔡远辽 | Technology for producing high-strength gypsum by using bittern |
| CN101139101A (en) * | 2007-06-23 | 2008-03-12 | 中盐制盐工程技术研究院 | Method for removing magnesium ion and calcium ion in middle-degree brine in salt-field |
| CN102642849A (en) * | 2012-05-14 | 2012-08-22 | 河北工业大学 | Method for removing magnesium in seawater potassium extraction process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110963521A (en) * | 2019-12-30 | 2020-04-07 | 自贡市轻工业设计研究院有限责任公司 | Extraction process of calcium chloride in yellow brine salt-making mother liquor |
| CN110963521B (en) * | 2019-12-30 | 2022-06-14 | 自贡市轻工业设计研究院有限责任公司 | Extraction process of calcium chloride in yellow brine salt-making mother liquor |
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Application publication date: 20181120 |