CN109455739A - A method of Cardia Salt processed is shone using magnesium sulfate brine - Google Patents
A method of Cardia Salt processed is shone using magnesium sulfate brine Download PDFInfo
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- CN109455739A CN109455739A CN201811484722.3A CN201811484722A CN109455739A CN 109455739 A CN109455739 A CN 109455739A CN 201811484722 A CN201811484722 A CN 201811484722A CN 109455739 A CN109455739 A CN 109455739A
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- salt
- brine
- cardia salt
- cardia
- magnesium sulfate
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- 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
- C01D3/04—Chlorides
- C01D3/06—Preparation by working up brines; seawater or spent lyes
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Abstract
The present invention relates to a kind of methods that Cardia Salt processed is shone using magnesium sulfate brine, method includes the following steps: (1) freezing nitre naturally: salt lake original brine being squeezed into wintering pond, freezes caldo using salt pan overwintering refrigerating process naturally frozen；(2) salt pan natural evaporation I: caldo will be frozen and squeeze into salt pan progress natural evaporation, be separated by solid-liquid separation, respectively obtain solid sodium chloride and high potassium brine；(3) salt pan natural evaporation II: high potassium brine respectively obtains Cardia Salt semi-finished product and tail halogen through natural evaporation, separation of solid and liquid；(4) washing screening: by Cardia Salt semi-finished product with to freeze caldo with slurry and sieve, be then Cardia Salt intermediate products on sieve；(5) plasm scouring, drying and packaging again: by Cardia Salt intermediate products and to freeze caldo with slurry and supplement fresh water, agitated washing, separation, it is dry, pack up to Cardia Salt product.The present invention improves Cardia Salt crystallinity, not only simple process, and significantly reduces production cost, has the stronger market competitiveness.
Description
Technical field
The present invention relates to salt manufacturing field more particularly to a kind of methods that Cardia Salt processed is shone using magnesium sulfate brine.
Background technique
Salt is mankind's indispensable requisites.Before 5000, salt is used for flavouring by the mankind.In recent years scientific
Studies have shown that the true value of salt, is not only indispensable savory agent, or maintains and promote human physiological functions must
The nutrient needed.But due to containing sodium in salt, excess intake can be detrimental to health again.The external seventies has begun, will
The salt of flavouring transforms into as nutriment, and for the mid-80 on West Europe, Japan and other places, Cardia Salt has become most popular situation of selling well
Product.
It is counted according to the parties concerned, current China hypertensive patient has broken through 3.3 hundred million, wherein 18 years old and the high blood of the above resident
Pressing illness rate is 33.5%, and 60 years old and above old man's illness rate are 66.9%.According to health ministry gated data, China's death
Due to cardiovascular and cerebrovascular diseases, hypertension account for 40%, it is seen that cardiovascular and cerebrovascular diseases, hypertension are the primary threats of China's residents ' health.It is high
There are many blood pressure origin cause of formation, and wherein sodium intake is excessively high and potassium insufficiency of intake is important risk factors.
International Medical expert thinks that excessive edible salt causes sodium in human body, potassium out of proportion, is to cause hypertension, the heart
One of the reason of popular name for.It is reported that problem maximum in terms of China its people diet is sodium, potassium intake imbalance at present, and show
It is taken in for sodium excessively high.From the point of view of dietary structure, the national main sodium Intake of the source in China is from salt, and Cardia Salt is to realize to subtract sodium benefit
The optimal selection of potassium.Cardia Salt can help human body drop sodium to mend potassium, sodium, potassium balance be realized, to heart and brain as a kind of health table salt
The prevention and control of blood vessel have certain effect.
Currently, Cardia Salt in the market is mainly obtained by mix and convert mode, i.e., using salt compounded of iodine as raw material, add a certain amount of food
With grade potassium chloride, to change the sodium in salt, potassium ratio, this production method is produced into due to adding food-grade potassium chloride
This is relatively high, and product quality is not easy to control.Chinese patent CN106820073A discloses direct using sulfate type brine
Carnallite sodium chloride mixed salt is precipitated in the method for producing Cardia Salt in such a way that high-magnesium brine and sodium saturated bittern convert halogen, then
Add the mode of water elution magnesium chloride to produce Cardia Salt product, extracts Cardia Salt for sulfate type brine and provide a kind of feasible life
Production method, but the method, using halogen technology is converted, the chlorination almeraite mixed salt particle of precipitation is subtle, and marketing difficulty is larger, and
The rate of recovery is lower.Chinese patent CN106858521A discloses a kind of preparation method of Cardia Salt, leads to from chloride type brine
It crosses addition carnallite and converts halogen with it, and then natural evaporation obtains Cardia Salt, although this technique solves Cardia Salt crystallinity
Problem, but it is not particularly suited for sulfate type salt lake brine system.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of simple processes, low-cost utilization magnesium sulfate halogen
The method that water shines Cardia Salt processed.
To solve the above problems, a kind of method for shining Cardia Salt processed using magnesium sulfate brine of the present invention, packet
Include following steps:
Naturally freeze nitre: salt lake original brine is squeezed into wintering pond, using salt pan overwintering refrigerating process naturally frozen to get
Freeze caldo；
(2) salt pan natural evaporation I: squeezing into salt pan for the jelly caldo and carry out natural evaporation, the potassium ion in mother liquor A to be evaporated
Concentration is separated by solid-liquid separation when being 25 ~ 50g/L, respectively obtains solid sodium chloride and high potassium brine；The solid sodium chloride is as edible
Product salt sale；
(3) salt pan natural evaporation II: the high potassium brine through natural evaporation, the magnesium ion concentration in mother liquor B to be evaporated is 50 ~
It is separated by solid-liquid separation when 85g/L, respectively obtains Cardia Salt semi-finished product and tail halogen；The tail halogen outlet；
(4) washing screening: it is the Cardia Salt semi-finished product and the jellys caldo are with slurry by 20 ~ 30wt% and divide through 60 ~ 80 meshes,
A large amount of brine with slurry and switched under sieve by the solid material in standard screen aperture by sieve, and returns and (2) continue to steam into the step
Hair crystallization；It is then Cardia Salt intermediate products on sieve；
(5) plasm scouring, drying and packaging again: the Cardia Salt intermediate products are with slurry by 30 ~ 40wt% with the jelly caldo, and
It is followed by stirring and washing by 5 ~ 10% supplement fresh water of system gross mass, is separated after 15 ~ 30min, respectively obtain wet basis Cardia Salt
Product and separation liquid；The wet basis Cardia Salt product is packed after roller drier is dry up to Cardia Salt product；Described point
Chaotropic body returns to the step and (3) continues evaporative crystallization.
(1) middle refrigerating process control brine water temperature is -10 DEG C ± 10 DEG C to the step, and the retention time is at least for 24 hours.
The brine water temperature is -5 DEG C ~ -15 DEG C.
(2) it is 33 ~ 40g/L that the step evaporates the potassium concentration in mother liquor A.
(3) it is 80 ~ 85g/L that the step evaporates the magnesium ion concentration in mother liquor B.
The step (4) in ratio with slurry be 28 ~ 30wt%.
(4) middle screening aperture is 60 ~ 75 mesh to the step.
(5) middle fresh water additional amount is the 5 ~ 8% of system gross mass to the step.
(5) middle centrifuge separation factor is not less than 1000 to the step.
The step (5) in the drying condition of roller drier refer to that using compartment, heat medium is that steam or heat are empty
Gas, 110 ± 2 DEG C of heating temperature, 30 ~ 120min of residence time of material.
Compared with the prior art, the present invention has the following advantages:
1, the present invention shines potassium chloride and sodium chloride mixture material processed using natural bittern naturally frozen, salt pan evaporation, then by washing
It washs and produces Cardia Salt product, which meets GB2019-2005 standard requirements through detection.
2, compared with prior art, the present invention reducing edible potassium chloride processing and sodium, potassium mixing process, low sodium is improved
Salt crystallinity, not only simple process, and production cost is significantly reduced, there is the stronger market competitiveness.
Specific embodiment
A kind of method that Cardia Salt processed is shone using magnesium sulfate brine of embodiment 1, comprising the following steps:
(1) freeze nitre naturally: salt lake original brine is squeezed into wintering pond, using salt pan overwintering refrigerating process naturally frozen, control
Brine water temperature is -10 DEG C ± 10 DEG C, and the retention time is at least for 24 hours to get jelly caldo.
(2) salt pan natural evaporation I: caldo will be frozen and squeeze into salt pan progress natural evaporation, the potassium ion in mother liquor A to be evaporated
Concentration is separated by solid-liquid separation when being 25 ~ 30g/L, respectively obtains solid sodium chloride and high potassium brine；Solid sodium chloride is produced as edible salt
Product sale.
(3) salt pan natural evaporation II: high potassium brine through natural evaporation, the magnesium ion concentration in mother liquor B to be evaporated is 50 ~
It is separated by solid-liquid separation when 60g/L, respectively obtains Cardia Salt semi-finished product and tail halogen；Tail halogen outlet.
(4) washing screening: by Cardia Salt semi-finished product and to freeze caldo with slurry by 20wt% and through 60 meshes point, a large amount of halogen with slurry
Water and switched under sieve by the solid material in standard screen aperture by sieve, and returns and (2) continue evaporative crystallization into step；On sieve then
For Cardia Salt intermediate products.
(5) plasm scouring, drying and packaging again: by Cardia Salt intermediate products with to freeze caldo with slurry by 30wt%, and press system
5% supplement fresh water of gross mass is followed by stirring and washing, and 15min is placed in centrifuge, by the centrifuge separation factor for being not less than 1000
It is separated, respectively obtains wet basis Cardia Salt product and separation liquid；Wet basis Cardia Salt product is placed in roller drier, is used
Compartment is dry, and heat medium is steam or hot-air, and 110 ± 2 DEG C of heating temperature, residence time of material 30min, object after drying
Material is Cardia Salt finished product, is packaged up to Cardia Salt product；(3) separation liquid return step continues evaporative crystallization.
A kind of method that Cardia Salt processed is shone using magnesium sulfate brine of embodiment 2, comprising the following steps:
(1) freeze nitre naturally: salt lake original brine is squeezed into wintering pond, using salt pan overwintering refrigerating process naturally frozen, control
Brine water temperature is -5 DEG C, and the retention time is at least for 24 hours to get jelly caldo.
(2) salt pan natural evaporation I: caldo will be frozen and squeeze into salt pan progress natural evaporation, the potassium ion in mother liquor A to be evaporated
Concentration is separated by solid-liquid separation when being 30 ~ 33g/L, respectively obtains solid sodium chloride and high potassium brine；Solid sodium chloride is produced as edible salt
Product sale.
(3) salt pan natural evaporation II: high potassium brine through natural evaporation, the magnesium ion concentration in mother liquor B to be evaporated is 60 ~
It is separated by solid-liquid separation when 70g/L, respectively obtains Cardia Salt semi-finished product and tail halogen；Tail halogen outlet.
(4) washing screening: by Cardia Salt semi-finished product and to freeze caldo with slurry by 30wt% and through 80 meshes point, a large amount of halogen with slurry
Water and switched under sieve by the solid material in standard screen aperture by sieve, and returns and (2) continue evaporative crystallization into step；On sieve then
For Cardia Salt intermediate products.
(5) plasm scouring, drying and packaging again: by Cardia Salt intermediate products with to freeze caldo with slurry by 40wt%, and press system
Gross mass 10% supplement fresh water be followed by stirring and washing, 30min is placed in centrifuge, by not less than 1000 centrifuge separation because
Number is separated, and wet basis Cardia Salt product and separation liquid are respectively obtained；Wet basis Cardia Salt product is placed in roller drier, is adopted
Dry with compartment, heat medium is steam or hot-air, 110 ± 2 DEG C of heating temperature, residence time of material 120min, is dried
Material is Cardia Salt finished product afterwards, is packaged up to Cardia Salt product；(3) separation liquid return step continues evaporative crystallization.
A kind of method that Cardia Salt processed is shone using magnesium sulfate brine of embodiment 3, comprising the following steps:
(1) freeze nitre naturally: salt lake original brine is squeezed into wintering pond, using salt pan overwintering refrigerating process naturally frozen, control
Brine water temperature is -15 DEG C, and the retention time is at least for 24 hours to get jelly caldo.
(2) salt pan natural evaporation I: caldo will be frozen and squeeze into salt pan progress natural evaporation, the potassium ion in mother liquor A to be evaporated
Concentration is separated by solid-liquid separation when being 33 ~ 40g/L, respectively obtains solid sodium chloride and high potassium brine；Solid sodium chloride is produced as edible salt
Product sale.
(3) salt pan natural evaporation II: high potassium brine through natural evaporation, the magnesium ion concentration in mother liquor B to be evaporated is 70 ~
It is separated by solid-liquid separation when 80g/L, respectively obtains Cardia Salt semi-finished product and tail halogen；Tail halogen outlet.
(4) washing screening: by Cardia Salt semi-finished product and to freeze caldo with slurry by 25wt% and through 70 meshes point, a large amount of halogen with slurry
Water and switched under sieve by the solid material in standard screen aperture by sieve, and returns and (2) continue evaporative crystallization into step；On sieve then
For Cardia Salt intermediate products.
(5) plasm scouring, drying and packaging again: by Cardia Salt intermediate products with to freeze caldo with slurry by 35wt%, and press system
8% supplement fresh water of gross mass is followed by stirring and washing, and 20min is placed in centrifuge, by the centrifuge separation factor for being not less than 1000
It is separated, respectively obtains wet basis Cardia Salt product and separation liquid；Wet basis Cardia Salt product is placed in roller drier, is used
Compartment is dry, and heat medium is steam or hot-air, and 110 ± 2 DEG C of heating temperature, residence time of material 60min, object after drying
Material is Cardia Salt finished product, is packaged up to Cardia Salt product；(3) separation liquid return step continues evaporative crystallization.
A kind of method that Cardia Salt processed is shone using magnesium sulfate brine of embodiment 4, comprising the following steps:
(1) freeze nitre naturally: salt lake original brine is squeezed into wintering pond, using salt pan overwintering refrigerating process naturally frozen, control
Brine water temperature is -10 DEG C, and the retention time is at least for 24 hours to get jelly caldo.
(2) salt pan natural evaporation I: caldo will be frozen and squeeze into salt pan progress natural evaporation, the potassium ion in mother liquor A to be evaporated
Concentration is separated by solid-liquid separation when being 40 ~ 50g/L, respectively obtains solid sodium chloride and high potassium brine；Solid sodium chloride is produced as edible salt
Product sale.
(3) salt pan natural evaporation II: high potassium brine through natural evaporation, the magnesium ion concentration in mother liquor B to be evaporated is 80 ~
It is separated by solid-liquid separation when 85g/L, respectively obtains Cardia Salt semi-finished product and tail halogen；Tail halogen outlet.
(4) washing screening: by Cardia Salt semi-finished product and to freeze caldo with slurry by 28wt% and through 75 meshes point, a large amount of halogen with slurry
Water and switched under sieve by the solid material in standard screen aperture by sieve, and returns and (2) continue evaporative crystallization into step；On sieve then
For Cardia Salt intermediate products.
(5) plasm scouring, drying and packaging again: by Cardia Salt intermediate products with to freeze caldo with slurry by 35wt%, and press system
9% supplement fresh water of gross mass is followed by stirring and washing, and 25min is placed in centrifuge, by the centrifuge separation factor for being not less than 1000
It is separated, respectively obtains wet basis Cardia Salt product and separation liquid；Wet basis Cardia Salt product is placed in roller drier, is used
Compartment is dry, and heat medium is steam or hot-air, and 110 ± 2 DEG C of heating temperature, residence time of material 90min, object after drying
Material is Cardia Salt finished product, is packaged up to Cardia Salt product；(3) separation liquid return step continues evaporative crystallization.
Embodiment 5 is using Chaidamu Basin, Qinghai Province salt lake bittern as raw material, with chemical composition as shown in Table 1.
1 Chaidamu Basin, Qinghai Province salt lake bittern chemical composition of table
The salt lake bittern carries out nature by the method for the present invention and freezes nitre, salt pan natural evaporation I, salt pan natural evaporation II, process materials
Data are shown in Table 2.
Table 2: process materials data
Pass through washing screening, again plasm scouring, drying, low sodium obtained by the resulting Cardia Salt semi-finished product of salt pan natural evaporation II
Product salt salt sample is detected through national product salt Quality Supervision and Inspection Center, and monitoring data are shown in Table 3.
Table 3: Cardia Salt monitoring data
Through detecting, the main content adduction (potassium chloride+sodium chloride) of gained Cardia Salt and other impurity contents, sense organ, physical index are complete
Reach GB2019-2005 standard requirements entirely.
The natural jelly nitre process of salt lake bittern can also be freezed by mechanical forced in above-described embodiment 1 ~ 5, and mechanical forced is cold
Freeze temperature control at -10 DEG C ~ -20 DEG C, freezing brine pass through again salt pan natural evaporation I, salt pan natural evaporation II, washing screening,
Same Cardia Salt product can be made in plasm scouring, drying and packaging process again.
Claims (10)
1. a kind of method for shining Cardia Salt processed using magnesium sulfate brine, comprising the following steps:
Naturally freeze nitre: salt lake original brine is squeezed into wintering pond, using salt pan overwintering refrigerating process naturally frozen to get
Freeze caldo；
(2) salt pan natural evaporation I: squeezing into salt pan for the jelly caldo and carry out natural evaporation, the potassium ion in mother liquor A to be evaporated
Concentration is separated by solid-liquid separation when being 25 ~ 50g/L, respectively obtains solid sodium chloride and high potassium brine；The solid sodium chloride is as edible
Product salt sale；
(3) salt pan natural evaporation II: the high potassium brine through natural evaporation, the magnesium ion concentration in mother liquor B to be evaporated is 50 ~
It is separated by solid-liquid separation when 85g/L, respectively obtains Cardia Salt semi-finished product and tail halogen；The tail halogen outlet；
(4) washing screening: it is the Cardia Salt semi-finished product and the jellys caldo are with slurry by 20 ~ 30wt% and divide through 60 ~ 80 meshes,
A large amount of brine with slurry and switched under sieve by the solid material in standard screen aperture by sieve, and returns and (2) continue to steam into the step
Hair crystallization；It is then Cardia Salt intermediate products on sieve；
(5) plasm scouring, drying and packaging again: the Cardia Salt intermediate products are with slurry by 30 ~ 40wt% with the jelly caldo, and
It is followed by stirring and washing by 5 ~ 10% supplement fresh water of system gross mass, is separated after 15 ~ 30min, respectively obtain wet basis Cardia Salt
Product and separation liquid；The wet basis Cardia Salt product is packed after roller drier is dry up to Cardia Salt product；Described point
Chaotropic body returns to the step and (3) continues evaporative crystallization.
2. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as described in claim 1, it is characterised in that: described
(1) middle refrigerating process control brine water temperature is -10 DEG C ± 10 DEG C to step, and the retention time is at least for 24 hours.
3. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as claimed in claim 2, it is characterised in that: described
Brine water temperature is -5 DEG C ~ -15 DEG C.
4. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as described in claim 1, it is characterised in that: described
(2) it is 33 ~ 40g/L that step evaporates the potassium concentration in mother liquor A.
5. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as described in claim 1, it is characterised in that: described
(3) it is 80 ~ 85g/L that step evaporates the magnesium ion concentration in mother liquor B.
6. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as described in claim 1, it is characterised in that: described
Step (4) in ratio with slurry be 28 ~ 30wt%.
7. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as described in claim 1, it is characterised in that: described
(4) middle screening aperture is 60 ~ 75 mesh to step.
8. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as described in claim 1, it is characterised in that: described
(5) middle fresh water additional amount is the 5 ~ 8% of system gross mass to step.
9. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as described in claim 1, it is characterised in that: described
(5) middle centrifuge separation factor is not less than 1000 to step.
10. a kind of method for shining Cardia Salt processed using magnesium sulfate brine as described in claim 1, it is characterised in that: institute
State step (5) in the drying condition of roller drier refer to that using compartment, heat medium is steam or hot-air, heating temperature
110 ± 2 DEG C, 30 ~ 120min of residence time of material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811484722.3A CN109455739B (en) | 2018-12-06 | 2018-12-06 | Method for preparing low-sodium salt by sun-drying magnesium sulfate subtype brine |
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| CN201811484722.3A CN109455739B (en) | 2018-12-06 | 2018-12-06 | Method for preparing low-sodium salt by sun-drying magnesium sulfate subtype brine |
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Cited By (2)
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| CN112349354A (en) * | 2020-11-05 | 2021-02-09 | 青海省柴达木综合地质矿产勘查院 | Simulated salt preparation method for brine and salt water |
| CN113185047A (en) * | 2021-05-11 | 2021-07-30 | 四川恒成钾盐科技有限公司 | Method for producing low-sodium salt from potassium-rich brine |
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| CN112349354A (en) * | 2020-11-05 | 2021-02-09 | 青海省柴达木综合地质矿产勘查院 | Simulated salt preparation method for brine and salt water |
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| CN113185047A (en) * | 2021-05-11 | 2021-07-30 | 四川恒成钾盐科技有限公司 | Method for producing low-sodium salt from potassium-rich brine |
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