CN107446549A - The method of comprehensive utilization of salt lake bittern - Google Patents
The method of comprehensive utilization of salt lake bittern Download PDFInfo
- Publication number
- CN107446549A CN107446549A CN201710609259.XA CN201710609259A CN107446549A CN 107446549 A CN107446549 A CN 107446549A CN 201710609259 A CN201710609259 A CN 201710609259A CN 107446549 A CN107446549 A CN 107446549A
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- CN
- China
- Prior art keywords
- salt lake
- comprehensive utilization
- snow agent
- lake bittern
- snow
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
- Fertilizers (AREA)
Abstract
The invention belongs to the technical field of comprehensive utilization of salt lake resources, more particularly to a kind of method of comprehensive utilization of salt lake bittern, it comprises the following steps：Salt lake bittern is subjected to flash distillation granulation, obtains Snow Agent；Wherein, the Snow Agent includes half dehydration magnesium chloride with 3~4 hydrones.According to the salt lake bittern method of comprehensive utilization of the present invention, by using the discarded object salt lake bittern in potassium fertilizer production process, it is directly carried out to flash granulation processing, one step obtains efficient Snow Agent, provide the solution route that a kind of comprehensive utilization of resources is turned waste into wealth, reduce the sustainable development for promoting salt lake ecological environmental pollution Salt Lake Potash industry；Meanwhile the Snow Agent prepared by the method for comprehensive utilization, compared with prior art in Snow Agent and preparation method thereof, have and prepare that cost is low, technique is simple and the advantages such as snow melt effect is good.
Description
Technical field
The invention belongs to the technical field of comprehensive utilization of salt lake resources, specifically, is related to a kind of synthesis of salt lake bittern
Application way.
Background technology
Potash fertilizer is very extensive agriculturally using as a kind of important chemical fertilizer, but China is the state of a potassium deficiency
Family, more than the 90% of China's potash fertilizer yield is all that Qinghai Chaerhan salt lakes area produces, and salt lake can produce largely during carrying potassium
Old halogen, general one ton of potash fertilizer of production can by-product at least ten tons of old halogen.At present, the main resource that can also be utilized in old halogen have lithium,
The rare and scatter elements such as bromine, rubidium, caesium, but 1% of the content of above rare and scatter element less than old halogen total amount, therefore, extraction are above-mentioned dilute scattered
The discharge of old halogen after element can still pollute salt lake ecological environment, and restrict the sustainable development of Salt Lake Potash industry.
Existing Snow Agent is generally chloride-calcium type Snow Agent and organic and inorganic compound snow-melting agent, but chloride-calcium type melts
There is the problem of cost is higher, preparation process is complex and snow melt effect is undesirable in snow agent, and organic and inorganic composite snow-melting
Agent equally there is also cost it is high the problem of.
The content of the invention
To solve the above-mentioned problems of the prior art, the invention provides a kind of method of comprehensive utilization of salt lake bittern,
The method of comprehensive utilization can obtain the simple Snow Agent of composition by simple process, not only turn waste into wealth, more reduce snow melt
The preparation cost of agent.
In order to reach foregoing invention purpose, present invention employs following technical scheme：
A kind of method of comprehensive utilization of salt lake bittern, including step：Salt lake bittern is subjected to flash distillation granulation, obtains snow melt
Agent；Wherein, the Snow Agent includes half dehydration magnesium chloride with 3~4 hydrones.
Further, flash temperature is 180 DEG C~200 DEG C.
Further, the particle diameter of granulation is 1.5mm~2.0mm.
Further, sylvite is also included in the Snow Agent.
Further, the mass percent of magnesium chloride is not less than 95% in the salt lake bittern, the quality percentage of potassium chloride
Number is no more than 1%.
The present invention utilizes discarded object-salt lake bittern in potassium fertilizer production process, and it is directly carried out to flash distillation granulation and handled, and one
Step obtains efficient Snow Agent, there is provided the solution route that a kind of comprehensive utilization of resources is turned waste into wealth, reduces to salt lake ecology ring
Border is polluted, and promotes the sustainable development of Salt Lake Potash industry；Meanwhile the Snow Agent prepared by the method for comprehensive utilization,
Snow Agent in compared with prior art and preparation method thereof, has that to prepare that cost is low, technique is simple and snow melt effect is good etc. excellent
Gesture.
Embodiment
Hereinafter, embodiments of the invention are described in detail in the future.However, it is possible to implement this hair in many different forms
It is bright, and the specific embodiment of the invention that should not be construed as limited to illustrate here.Conversely, there is provided these embodiments be for
The principle and its practical application of the present invention is explained, so that others skilled in the art are it will be appreciated that the present invention's is various
Embodiment and the various modifications for being suitable for specific intended application.
It will be appreciated that although can be used term " first ", " second " etc. to describe various materials herein, but these
Material should not be limited by these terms.These terms are only used for making a distinction a material with another material.
The invention provides a kind of method of comprehensive utilization of salt lake bittern, the salt lake bittern is that original salt lake bittern is extracting
Caused by after sylvite, wherein magnesium chloride saturation or nearly saturation, and contain the rare and scatter element such as a small amount of potassium and lithium, bromine, rubidium, caesium.
Comprised the steps according to the method for comprehensive utilization of the salt lake bittern of the present invention：Salt lake bittern is carried out into flash distillation to make
Grain, obtain Snow Agent.
Specifically, the mass percent of magnesium chloride is not less than 95% in the salt lake bittern, the mass percent of potassium chloride
No more than 1%, remaining is the material such as sodium chloride and other silts；Preferably wherein the mass percent of magnesium chloride is 95% left
The right side, and the mass percent of potassium chloride is 0.5% or so.
More specifically, during granulation is flashed, the temperature for controlling flash distillation is 180 DEG C~200 DEG C, the particle diameter of granulation
For 1.5mm~2.0mm.
In this way, the Snow Agent obtained includes half dehydration magnesium chloride with 3~4 hydrones, preferably also include few
The sylvite of amount.
According to the Snow Agent epigranular of the present invention, convenient transportation, good fluidity, be easy to sow, snow melt effect it is good；And
The Snow Agent is because it is to absorb heat in the dehydration for producing half dehydration magnesium chloride, therefore in snow melt water absorption course
There will be exothermic phenomenon so that this kind of Snow Agent is more suitable for using under extreme low temperature, therefore it is more in the prior art with six
Aqueous magnesium chloride will have more advantages for the Snow Agent of main body, and applied in wider field.In addition, according to the present invention
Snow Agent in can residual fraction sylvite, part potassium ion is had in merging into nature and enters soil, is advantageous to vegetation growth.
The method of comprehensive utilization of the salt lake bittern of the present invention, but these realities will be illustrated by specific embodiment below
The method of comprehensive utilization can not be limited by applying the offer of example, only be wherein optional several specific examples.
Embodiment 1-3 specific process parameter is listed in Table 1 below.
The technological parameter contrast of the method for comprehensive utilization of the embodiment 1-3 of table 1 salt lake bittern
Although the present invention has shown and described with reference to specific embodiment, it should be appreciated by those skilled in the art that：
In the case where not departing from the spirit and scope of the present invention limited by claim and its equivalent, can carry out herein form and
Various change in details.
Claims (5)
1. a kind of method of comprehensive utilization of salt lake bittern, it is characterised in that including step：Salt lake bittern is subjected to flash distillation granulation,
Obtain Snow Agent；Wherein, the Snow Agent includes half dehydration magnesium chloride with 3~4 hydrones.
2. method of comprehensive utilization according to claim 1, it is characterised in that flash temperature is 180 DEG C~200 DEG C.
3. method of comprehensive utilization according to claim 1, it is characterised in that the particle diameter of granulation is 1.5mm~2.0mm.
4. according to any described method of comprehensive utilization of claim 1-3, it is characterised in that also include potassium in the Snow Agent
Salt.
5. method of comprehensive utilization according to claim 1, it is characterised in that the quality hundred of magnesium chloride in the salt lake bittern
Fraction is not less than 95%, and the mass percent of potassium chloride is no more than 1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609259.XA CN107446549A (en) | 2017-07-25 | 2017-07-25 | The method of comprehensive utilization of salt lake bittern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609259.XA CN107446549A (en) | 2017-07-25 | 2017-07-25 | The method of comprehensive utilization of salt lake bittern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107446549A true CN107446549A (en) | 2017-12-08 |
Family
ID=60487190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710609259.XA Pending CN107446549A (en) | 2017-07-25 | 2017-07-25 | The method of comprehensive utilization of salt lake bittern |
Country Status (1)
| Country | Link |
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| CN (1) | CN107446549A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269828A (en) * | 2008-05-12 | 2008-09-24 | 部燕茹 | Dehydration technique for carnaillite water feeding chloromagnesite |
| CN101966998A (en) * | 2010-11-26 | 2011-02-09 | 南风化工集团股份有限公司 | New process for preparing magnesium chloride hexahydrate by using high-magnesium brine |
| CN104403634A (en) * | 2014-12-03 | 2015-03-11 | 中国科学院青海盐湖研究所 | Snow-melting agent and preparation method thereof |
| CN104559929A (en) * | 2014-12-03 | 2015-04-29 | 中国科学院青海盐湖研究所 | Comprehensive utilization method of potassium extraction tailings |
-
2017
- 2017-07-25 CN CN201710609259.XA patent/CN107446549A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269828A (en) * | 2008-05-12 | 2008-09-24 | 部燕茹 | Dehydration technique for carnaillite water feeding chloromagnesite |
| CN101966998A (en) * | 2010-11-26 | 2011-02-09 | 南风化工集团股份有限公司 | New process for preparing magnesium chloride hexahydrate by using high-magnesium brine |
| CN104403634A (en) * | 2014-12-03 | 2015-03-11 | 中国科学院青海盐湖研究所 | Snow-melting agent and preparation method thereof |
| CN104559929A (en) * | 2014-12-03 | 2015-04-29 | 中国科学院青海盐湖研究所 | Comprehensive utilization method of potassium extraction tailings |
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| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171208 |