CN103979585B - A kind of preparation method of carnallite - Google Patents
A kind of preparation method of carnallite Download PDFInfo
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- CN103979585B CN103979585B CN201410191606.8A CN201410191606A CN103979585B CN 103979585 B CN103979585 B CN 103979585B CN 201410191606 A CN201410191606 A CN 201410191606A CN 103979585 B CN103979585 B CN 103979585B
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- CN
- China
- Prior art keywords
- carnallite
- content
- solid
- saturated bittern
- bischofite
- 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.)
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- PALNZFJYSCMLBK-UHFFFAOYSA-K magnesium;potassium;trichloride;hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-].[Cl-].[K+] PALNZFJYSCMLBK-UHFFFAOYSA-K 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 56
- 241001131796 Botaurus stellaris Species 0.000 claims abstract description 53
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims abstract description 34
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 10
- 239000011707 mineral Substances 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 9
- 239000007790 solid phase Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 16
- 239000003337 fertilizer Substances 0.000 claims description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 13
- 229910052749 magnesium Inorganic materials 0.000 claims description 13
- 229940072033 potash Drugs 0.000 claims description 13
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 13
- 235000015320 potassium carbonate Nutrition 0.000 claims description 13
- 238000005516 engineering process Methods 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 10
- 239000007791 liquid phase Substances 0.000 claims description 9
- 235000010755 mineral Nutrition 0.000 claims description 9
- 239000001103 potassium chloride Substances 0.000 claims description 8
- 235000011164 potassium chloride Nutrition 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract description 10
- 239000011591 potassium Substances 0.000 abstract description 10
- 229910052700 potassium Inorganic materials 0.000 abstract description 10
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001414 potassium ion Inorganic materials 0.000 abstract description 3
- 238000005185 salting out Methods 0.000 abstract description 2
- 239000011777 magnesium Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 229910052736 halogen Inorganic materials 0.000 description 8
- 150000002367 halogens Chemical class 0.000 description 8
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- QGZNMXOKPQPNMY-UHFFFAOYSA-N [Mg].[Cl] Chemical compound [Mg].[Cl] QGZNMXOKPQPNMY-UHFFFAOYSA-N 0.000 description 2
- 229940050906 magnesium chloride hexahydrate Drugs 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Fertilizers (AREA)
Abstract
The invention provides the preparation method of a kind of carnallite, the potassium salt saturated bittern prepared is mixed homogeneously with bischofite solid mineral, stirs the solid-liquid reaction thing obtained and carry out solid-liquid separation, obtain the carnallite of solid phase, the present invention utilizes the dissolubility that bischofite Gu Kuang is bigger, it is made to be dissolved in potassium salt saturated bittern, by salting out, potassium ion in potassium saturated bittern is separated out with carnallite form, thus quickly from potassium saturated bittern, obtain carnallite.
Description
[technical field]
The present invention relates to the invention belongs to potash fertilizer preparing technical field, particularly relate to the preparation of a kind of carnallite
Method and application thereof.
[background technology]
At present, domestic and international salt lake potassium chloride fertilizer raw materials for production generally be salt-pan carnallite ore deposit.Due to salt pan
Production belongs to extensive property technology, and quality and the yield in salt-pan carnallite ore deposit are affected very big by natural cause, ore deposit
The fluctuation of article matter causes very adverse influence to the production of follow-up potassium chloride；Meanwhile, Solar pond production is profit
The production facility being evaporated with natural energy, producing of carnallite needs certain cycle, for being badly in need of light
Halogen stone ore produces the enterprise of potassium chloride, defines the unfavorable situation that one " is waited for rice to put in one's pan " to a certain extent；
It addition, utilize carnallite can produce substantial amounts of tail washings (for the saturated halogen of carnallite during producing potassium chloride
Water, i.e. potassium salt saturated bittern), the yield relatively low (about 70%) that potash fertilizer produces, potash fertilizer tail washings is by enterprise
Directly discharge or be delivered to salt pan and carry out natural evaporation recovery, cause the wasting of resources or return period is longer and mistake
Journey produces no small cost recovery.
[summary of the invention]
The technical problem to be solved in the present invention is to overcome in prior art prepares carnallite cycle length, quality
The shortcomings such as difference, it is provided that the preparation method of the carnallite that a kind of cycle is short, efficiency is high.
For solving above-mentioned technical problem, the present invention uses following technical proposals:
The preparation method of a kind of carnallite, comprises the steps:
Step S110: prepare potassium salt saturated bittern；
Step S120: obtain after described potassium salt saturated bittern is mixed homogeneously with bischofite solid mineral, stirred
Solid-liquid reaction thing；
Step S130: described solid-liquid reaction thing carries out solid-liquid separation, and wherein, solid phase is described carnallite,
Liquid phase is bischofite saturated bittern.
In the embodiment that the present invention provides, also comprise the steps:
Step S140: described bischofite saturated bittern is separated out bischofite Gu Kuang through natural evaporation, and returns
Return described step S120.
In the embodiment that the present invention provides, in step S110, prepare potassium salt saturated bittern particularly as follows: by salt
Lake bittern water evaporates through salt pan, obtains described potassium salt saturated bittern.
In the embodiment that the present invention provides, in step S110, prepare potassium salt saturated bittern particularly as follows: use
Carnallite cool technology floatation produces potassium chloride, and collects its tail washings, obtains described potassium salt saturated bittern.
In the embodiment that the present invention provides, in step S110, the potassium content of described potassium salt saturated bittern exists
Between 0.8%～2.4%, magnesium ion content is between 6.0%～8.0%.
In the embodiment that the present invention provides, in step S120, described potassium salt saturated bittern and described water chlorine magnesium
The mass ratio of stone solid mineral is 1.2～3.0.
In the embodiment that the present invention provides, in described bischofite ore deposit, magnesium chloride hexahydrate content is more than or equal to
90%.
It addition, present invention also offers the application in producing potash fertilizer of a kind of described carnallite.
Use technique scheme, the beneficial effects of the present invention is:
The preparation method of the carnallite that the above embodiment of the present invention provides, the saturated halogen of potassium salt that will prepare
Water mixs homogeneously with bischofite solid mineral, stir the solid-liquid reaction thing obtained carries out solid-liquid separation, consolidate
The carnallite of phase, the present invention utilizes the dissolubility that bischofite Gu Kuang is bigger so that it is be dissolved in potassium salt saturated
In salt, by salting out, potassium ion in potassium saturated bittern is separated out with carnallite form, thus quickly from
Potassium saturated bittern obtains carnallite.
It addition, use the preparation method of the carnallite of present invention offer, described solid-liquid reaction thing is carried out solid
The bischofite saturated bittern of liquid isolated liquid phase, bischofite saturated bittern can use salt field produced water again
Chloromagnesite ore deposit, the repeatable utilization in bischofite ore deposit, technology is simple, easily operates.
[accompanying drawing explanation]
The flow chart of steps of the preparation method of the carnallite that Fig. 1 provides for the embodiment of the present invention.
[detailed description of the invention]
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment, is further elaborated to the present invention.Should be appreciated that described herein being embodied as
Example only in order to explain the present invention, is not intended to limit the present invention.
Refer to the steps flow chart of the preparation method of the carnallite that Fig. 1, Fig. 1 provide for the embodiment of the present invention
Figure 100, it can be seen from figure 1 that the preparation method of carnallite comprises the steps:
Step S110: prepare potassium salt saturated bittern；
Preferably, prepare above-mentioned potassium salt saturated bittern particularly as follows: evaporated through salt pan by salt lake bittern, obtain
Described potassium salt saturated bittern.
Preferably, above-mentioned potassium salt saturated bittern is prepared particularly as follows: use carnallite cool technology floatation to produce
Potassium chloride, and collect its tail washings, obtain described potassium salt saturated bittern.
Step S120: obtain after described potassium salt saturated bittern is mixed homogeneously with bischofite solid mineral, stirred
Solid-liquid reaction thing；
Specifically, above-mentioned potassium salt saturated bittern and bischofite solid mineral are added retort by a certain percentage,
Uniform stirring makes it carry out conversion reaction, about 1 hour response time.
Preferably, the potassium content of described potassium salt saturated bittern is between 0.8%～2.4%, and magnesium ion content exists
Between 6.0%～8.0%.
It is appreciated that the bischofite solid mineral solid-liquid charge ratio with potassium salt saturated bittern is made up of salt to determine.
Preferably, described potassium salt saturated bittern is 1.2～3.0 with the mass ratio of described bischofite solid mineral.
Step S130: described solid-liquid reaction thing carries out solid-liquid separation, and wherein, solid phase is described carnallite,
Liquid phase is bischofite saturated bittern.
Preferably, in described bischofite ore deposit, magnesium chloride hexahydrate content is more than or equal to 90%.
It addition, present invention also offers the application in producing potash fertilizer of the above-mentioned carnallite.
The preparation method of the carnallite that the present invention provides, potassium salt saturated bittern and the water chlorine magnesium that will prepare
The solid-liquid reaction thing that stone solid mineral mix homogeneously, stirring obtain carries out solid-liquid separation, obtains the carnallite of solid phase
Ore deposit, the present invention utilizes the dissolubility that bischofite Gu Kuang is bigger so that it is be dissolved in potassium salt saturated bittern, logical
Potassium ion in potassium saturated bittern is separated out by oversalting effect with carnallite form, thus quickly from potassium saturated bittern
Middle acquisition carnallite.
It addition, use the preparation method of the carnallite of present invention offer, described solid-liquid reaction thing is carried out solid
The bischofite saturated bittern of liquid isolated liquid phase, bischofite saturated bittern can use salt field produced water again
Chloromagnesite ore deposit, the repeatable utilization in bischofite ore deposit, technology is simple, easily operates.
The present invention is expanded on further by the following examples, and these embodiments are only used for the purpose illustrated,
Do not limit the scope of the present invention.In addition to dated actual conditions, the test method in embodiment all according to
Normal condition is carried out.
Embodiment 1
Use carnallite cool technology floatation to produce the tail washings of potassium chloride, obtain potassium salt saturated bittern, and claim
Take potassium salt saturated bittern 8.60Kg (wherein, K content 1.71%, Mg content 6.46%), it addition, weigh water
Chloromagnesite ore deposit 3.0Kg (wherein, K content is less than 0.1%, Mg content 11.74%, Cl content 31.64%),
It is collectively disposed in reactive tank, after stirring 1 hour, carries out solid-liquid separation；Obtain the carnallite 1.51Kg (K of solid phase
Content 8.36%, Mg content 7.49%), obtain bischofite saturated bittern 10.08Kg (the K content of liquid phase
0.14%).
In the present embodiment, potash fertilizer produces tail halogen amount 8.60Kg and the most about produces 1Kg (93%～95% potash fertilizer)
During produce tail halogen.Produce yield about 70% by current potash fertilizer to calculate, produce 1Kg (93% potash fertilizer) about
Need raw ore 8.77Kg (wherein, K content 8.36%, Mg content 7.49%).This technology is utilized quickly to return
Receive potassium in potash fertilizer tail halogen, often produce 1Kg (93% potash fertilizer) and be equivalent to save raw ore 1.51Kg, potash fertilizer yield
Becoming 87.07%, more former yield improves 17.07%.
Embodiment 2
Weigh carnallite saturated halogen 15.00Kg (wherein, K content 1.44%, Mg content 6.84%), additionally claim
Water intaking chloromagnesite ore deposit 5.60Kg (wherein, K content is less than 0.1%, Mg content 11.93%, Cl content 33.24%),
It is collectively disposed in reactive tank, after stirring 1 hour, carries out solid-liquid separation；The carnallite of isolated solid phase
2.40Kg (K content 8.26%, Mg content 8.70%), obtains the bischofite saturated bittern 17.38Kg (K of liquid phase
Content 0.13%).
Embodiment 3
Weigh potassium saturated halogen 10.00Kg (wherein, K content 2.61%, Mg content 5.96%), additionally weigh water
Chloromagnesite ore deposit 8.17Kg (wherein, K content is less than 0.1%, Mg content 11.74%, Cl content 31.64%),
It is collectively disposed in reactive tank, after stirring 1 hour, carries out solid-liquid separation；The carnallite of isolated solid phase
3.01Kg (wherein, K content 7.90%, Mg content 8.19%), obtain the bischofite saturated bittern of liquid phase
14.87Kg (K content 0.14%).
The above, be only presently preferred embodiments of the present invention, not makees the present invention any pro forma
Limit, although the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any
Those skilled in the art, in the range of without departing from technical solution of the present invention, when available the disclosure above
Technology contents make a little change or be modified to the Equivalent embodiments of equivalent variations, as long as being without departing from this
Bright technical scheme content, any simple modification above example made according to the technical spirit of the present invention,
Equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (4)
1. the preparation method of a carnallite, it is characterised in that comprise the steps:
Step S110: prepare potassium salt saturated bittern；
Step S120: potassium salt saturated bittern described in 10.00Kg is mixed all with 8.17Kg bischofite solid mineral
Even, uniform stirring makes it carry out conversion reaction, in 1 hour response time, obtains solid-liquid reaction thing；Wherein,
In described potassium salt saturated bittern, K content 2.61%, Mg content 5.96%, wherein, described bischofite is solid
In body ore deposit, K content is less than 0.1%, Mg content 11.74%, Cl content 31.64%；
Step S130: described solid-liquid reaction thing carries out solid-liquid separation, and wherein, solid phase is described carnallite,
Liquid phase is bischofite saturated bittern, obtains the carnallite 3.01Kg of solid phase, wherein, K content 7.90%,
Mg content 8.19%；Obtain the bischofite saturated bittern 14.87Kg of liquid phase, wherein, K content 0.14%；
Step S140: described bischofite saturated bittern is separated out bischofite Gu Kuang through natural evaporation, and returns
Return described step S120.
The preparation method of carnallite the most according to claim 1, it is characterised in that step S110
In, prepare potassium salt saturated bittern particularly as follows: evaporated through salt pan by salt lake bittern, obtain described potassium salt saturated
Salt.
The preparation method of carnallite the most according to claim 1, it is characterised in that step S110
In, prepare potassium salt saturated bittern particularly as follows: use carnallite cool technology floatation to produce potassium chloride, and receive
Collect its tail washings, obtain described potassium salt saturated bittern.
4. a carnallite according to claim 1 application in producing potash fertilizer.
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| CN201410191606.8A CN103979585B (en) | 2014-05-07 | 2014-05-07 | A kind of preparation method of carnallite |
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| CN201410191606.8A CN103979585B (en) | 2014-05-07 | 2014-05-07 | A kind of preparation method of carnallite |
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| CN103979585A CN103979585A (en) | 2014-08-13 |
| CN103979585B true CN103979585B (en) | 2016-08-31 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590412A (en) * | 2019-10-17 | 2019-12-20 | 青海盐湖工业股份有限公司 | Method for recovering water bath dedusting wastewater in potash fertilizer production |
| CN112138462A (en) * | 2020-08-31 | 2020-12-29 | 青海盐湖工业股份有限公司 | Method for treating high-sediment carnallite raw ore |
| CN113135580B (en) * | 2021-06-01 | 2023-03-17 | 吉林海资生物工程技术有限公司 | Process for preparing artificial carnallite and potassium chloride by extracting potassium from corn soaking solution |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1275531A (en) * | 2000-06-22 | 2000-12-06 | 宋侑霖 | Method for directly obtaining low-sodium fine carnallitite |
| JP3668886B2 (en) * | 2000-03-31 | 2005-07-06 | 株式会社石垣の塩 | Natural salt production apparatus and production method thereof |
| CN102336418A (en) * | 2011-08-09 | 2012-02-01 | 天津科技大学 | Method for extracting potassium salt from potassium-ion-containing brine |
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2014
- 2014-05-07 CN CN201410191606.8A patent/CN103979585B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3668886B2 (en) * | 2000-03-31 | 2005-07-06 | 株式会社石垣の塩 | Natural salt production apparatus and production method thereof |
| CN1275531A (en) * | 2000-06-22 | 2000-12-06 | 宋侑霖 | Method for directly obtaining low-sodium fine carnallitite |
| CN102336418A (en) * | 2011-08-09 | 2012-02-01 | 天津科技大学 | Method for extracting potassium salt from potassium-ion-containing brine |
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