US20030012726A1 - Method for manufacturing pure salt - Google Patents
Method for manufacturing pure salt Download PDFInfo
- Publication number
- US20030012726A1 US20030012726A1 US10/181,289 US18128902A US2003012726A1 US 20030012726 A1 US20030012726 A1 US 20030012726A1 US 18128902 A US18128902 A US 18128902A US 2003012726 A1 US2003012726 A1 US 2003012726A1
- Authority
- US
- United States
- Prior art keywords
- salt
- heating
- same
- placing
- crystallized
- 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.)
- Abandoned
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 142
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 239000012535 impurity Substances 0.000 claims abstract description 24
- 238000002844 melting Methods 0.000 claims abstract description 22
- 230000008018 melting Effects 0.000 claims abstract description 22
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 16
- 239000012267 brine Substances 0.000 claims abstract description 14
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000013049 sediment Substances 0.000 claims abstract description 12
- 238000007865 diluting Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000010298 pulverizing process Methods 0.000 claims abstract description 6
- 230000001112 coagulating effect Effects 0.000 claims abstract description 4
- 238000007667 floating Methods 0.000 claims description 2
- 239000000243 solution Substances 0.000 claims description 2
- 230000001954 sterilising effect Effects 0.000 claims 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 6
- 235000017491 Bambusa tulda Nutrition 0.000 description 6
- 241001330002 Bambuseae Species 0.000 description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 6
- 239000011425 bamboo Chemical class 0.000 description 6
- 235000013305 food Nutrition 0.000 description 4
- 239000013535 sea water Substances 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 208000025157 Oral disease Diseases 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 229940127554 medical product Drugs 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 208000030194 mouth disease Diseases 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 229940127557 pharmaceutical product Drugs 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000009278 visceral effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- C01D3/20—Purification by melting
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
- A23L27/00—Spices; Flavouring agents or condiments; Artificial sweetening agents; Table salts; Dietetic salt substitutes; Preparation or treatment thereof
- A23L27/40—Table salts; Dietetic salt substitutes
-
- 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
Definitions
- the present invention relates to a salt preparation method, and more particularly to a method for preparing nontoxic pure salt by removing from solar salt various impurities such as heavy metals contained in the solar salt.
- Solar salt is made by evaporating water from sea water. Recently, according to sea pollution, the solar salt made from polluted sea water contains various heavy metal components or impurities.
- various processed salts which are prepared by removing impurities contained in the solar salt, and processing methods thereof.
- Known processed salts include remanufactured salt, baked salt, washed salt, bamboo salt, refined salt and so on.
- the remanufactured salt is prepared by dissolving solar salt in water, boiling the dissolved solar salt in a pot at 100 to 200° C. and recrystallizing.
- the remanufactured salt has a disadvantage that heavy metals or impurities can not be sufficiently removed.
- the baked salt is prepared by primarily baking solar salt in reaction kiln at 400 to 450° C. for 1 to 4 hours, secondarily baking at 550 to 600° C. for 30 minutes to 4 hours, and thirdly baking at 700 to 800° C. for 30 minutes to 4 hours.
- Organic matter and arsenic (As) are substantially removed in the primarily baking step, As, oxide and cadmium (Cd) are removed in the secondary baking step, and lead (Pd), refractory organic matter or calcium (Ca), or magnesium (Mg) containing oxide are removed in the third baking step.
- this process involves complexity in adjusting the temperature b, step. More disadvantageously, if the temperature is not accurately adjusted by step, harmful materials are not removed but minerals only are removed.
- the washed salt is prepared by pulverization, washing, dehydration and drying , so that the content of insoluble matter is reduced to 0.02% or less, and magnesium chloride and sodium sulfate are reduced to 0.05% or less
- the washed salt has larger crystal and is hard.
- the washed salt per se can be used as food Farads salt, it became inadequate as food grade salt when it is used together with additives added for preventing coagulation of salt in the course of pulverization.
- the bamboo salt is prepared by placing solar salt placed in a bamboo tube, sealing the entrance of the bamboo tube with clay, repeatedly baking the sealed bamboo tube in a pot at 1000 to 1300° C. 8 times, and then spraying rosin powder over a wood fire to raise the baking temperature to bake at 1300 to 1700° C.
- the nuclear As contained in the solar salt is combined with sulfur, rosin or iron in the bamboo to be turned into an alkali material, which is useful to human body.
- the heavy metals or impurities contained in the solar salt can not completely be removed by heating the solar salt at higher temperature.
- the refined salt is prepared by passing sea water through an ion exchange membrane and extracting only NaCl, and is of high purity. Also, since the refined salt has fewer impurities, that is, highly hygienic, and has particles of constant size, it is widely used as home, food or industrial grade salt. However, the refined salt production is an unfavorably energy-consuming process.
- a method for manufacturing pure salt including the steps of placing solar salt in a heating kiln and heating the same at a predetermined temperature to dry moisture contained in the solar salt, placing the dried salt in a heating kiln and heating the same at a high temperature to be liquefied for primary melting, diluting the molten salt with clean water to sediment heavy metals or impurities contained in the salt, separating only brine from the resulting material and heating the same to evaporate moisture contained in the brine, heating moisture-evaporated salt to produce crystallized salt, placing the crystallized salt in the heating kiln and heating the same at a higher temperature than that of the first melting for secondary melting, diluting the secondarily molten salt with clean water to secondarily sediment heave metals or impurities contained therein, separating unsedimented brine and heating the same to produce crystallized salt, placing the crystallized salt in the heating kiln and heating the same at a higher temperature than
- FIG. 1 is a diagram showing the processing sequence of a method for manufacturing pure salt according to the present invention.
- Solar salt is placed in a heating kiln and heated at a temperature of approximately 200° C. for about 1 hour to dry moisture contained in the solar salt.
- the dried salt is again placed in the heating kiln and heated at 1300° C. to be liquefied for primary melting.
- the molten salt is diluted with clean water to sediment heavy metals or impurities contained in the salt. Only brine is separated from the resulting material and heated to evaporate moisture, thereby producing crystallized salt.
- the crystallized salt is placed in the heating kiln and heated at 1500° C. for secondary melting.
- the secondarily molten salt is diluted with clean water to secondarily sediment heavy metals or impurities contained in the salt, and only brine is separated, therefrom to produce crystallized salt.
- the crystallized salt is placed in the heating kiln and heated at 1800° C. for third melting.
- the thirdly molten salt is diluted with clean water to sediment impurities, and only brine is separated therefrom to produce crystallized salt.
- the crystallized salt is placed in the heating kiln and heated at 2000° C. for fourth melting, and then an upper layered portion of the molten salt is separated from a lower layered portion to coagulate the separated molten salt.
- the coagulated salt is pulverized to produce powdered salt.
- pure salt can be produced by processing solar salt to effectively remove heavy metals or other impurities contained in the solar salt.
- the thus-produced salt can be used as not only food grade salt but also as additives for medical or pharmaceutical products for rinsing eyes and treating or preventing oral diseases.
- the salt per se can be used for removing visceral waste matter or massaging skin.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Seasonings (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2000-1913 | 2000-01-12 | ||
| KR10-2000-0001913A KR100427012B1 (ko) | 2000-01-12 | 2000-01-12 | 순수소금의 제조방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20030012726A1 true US20030012726A1 (en) | 2003-01-16 |
Family
ID=19638896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/181,289 Abandoned US20030012726A1 (en) | 2000-01-12 | 2001-01-12 | Method for manufacturing pure salt |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20030012726A1 (fr) |
| KR (1) | KR100427012B1 (fr) |
| CN (1) | CN1395470A (fr) |
| WO (1) | WO2001067893A1 (fr) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013150546A1 (fr) * | 2012-04-02 | 2013-10-10 | Council Of Scientific & Industrial Research | Production de sel de grande pureté présentant des niveaux d'impuretés réduits |
| CN108323745A (zh) * | 2018-03-20 | 2018-07-27 | 天津长芦汉沽盐场有限责任公司 | 一种含晶型修复工序的精制粉碎洗涤盐生产方法 |
| US10914519B2 (en) * | 2013-05-07 | 2021-02-09 | Andritz Technology And Asset Management Gmbh | Method for producing salts with a reduced water of crystallisation content |
| CN117069128A (zh) * | 2023-09-11 | 2023-11-17 | 昆明理工大学 | 多组分废盐熔融多场调控相变分级分离纯化装置及使用方法 |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030053905A (ko) * | 2001-12-24 | 2003-07-02 | 강문숙 | 가열분해를 이용한 분말소금의 제조방법 |
| KR20030075595A (ko) * | 2002-03-19 | 2003-09-26 | 김영생 | 무여염의 제조방법 |
| MXPA06007390A (es) * | 2003-12-24 | 2007-03-23 | Council Scient Ind Res | Procedimiento para la produccion de cristales de cloruro de sodio enriquecidos con glicina con flujo mejorado. |
| CN106629780B (zh) * | 2017-03-17 | 2018-01-30 | 吉林光盐三百国际贸易有限公司 | 一种获得高纯NaCl晶粒的熔融提纯方法 |
| KR102292900B1 (ko) * | 2019-02-13 | 2021-08-23 | 유일수 | 불순물이 제거된 소금의 제조방법 및 이에 의해 제조된 소금 |
| KR102256819B1 (ko) | 2019-04-01 | 2021-05-26 | 이기용 | 가스버너와 3중 구조의 용융챔버를 이용한 소금 용융장치 및 소금 용융방법 |
| CN113455641B (zh) * | 2021-07-26 | 2023-06-09 | 昆明理工大学 | 一种喜马拉雅玫瑰盐提纯的方法 |
| KR102825233B1 (ko) * | 2022-10-18 | 2025-06-24 | 박현균 | 쓴 맛이 저감된 고품질 소금 제조 방법 및 그 제조 설비 |
| KR102825234B1 (ko) * | 2022-10-24 | 2025-06-24 | 박현균 | 함초 소금의 제조 방법 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3655333A (en) * | 1970-05-04 | 1972-04-11 | Dow Chemical Co | Process for producing anhydrous sodium chloride and purified saturated brine |
| US3760941A (en) * | 1971-05-04 | 1973-09-25 | Kali & Salz Ag | Process for preparing highly free flowing rock or table salt |
| US5935546A (en) * | 1996-09-14 | 1999-08-10 | Huels Aktiengesellschaft | Method for removing traces of heavy metals from concentrated alkali metal chloride solutions down into the range of 0.01 ppm |
| US6048569A (en) * | 1996-06-21 | 2000-04-11 | Garcia; Fernando Horacio | Comestible liquid sea salt having a low sodium content and method for producing the same |
| US6645458B1 (en) * | 1998-10-30 | 2003-11-11 | Solvay (Societe Anonyme) | Method for making an aqueous sodium chloride solution |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934868A (ja) * | 1982-08-20 | 1984-02-25 | Nara Kikai Seisakusho:Kk | 調味塩の製造方法 |
| KR920003053B1 (ko) * | 1990-04-06 | 1992-04-13 | 태양염업 주식회사 | 식용염 제조방법 및 장치 |
| JPH07142A (ja) * | 1993-02-25 | 1995-01-06 | Akou Kaisui Kk | 加工食塩 |
| JP3438191B2 (ja) * | 1995-03-09 | 2003-08-18 | 日本製粉株式会社 | 食塩水製造方法及び装置 |
| KR100300556B1 (ko) * | 1998-03-13 | 2001-11-22 | 오광륜 | 무독성소금의제조방법 |
-
2000
- 2000-01-12 KR KR10-2000-0001913A patent/KR100427012B1/ko not_active Expired - Fee Related
-
2001
- 2001-01-12 CN CN01803722A patent/CN1395470A/zh active Pending
- 2001-01-12 WO PCT/KR2001/000047 patent/WO2001067893A1/fr not_active Ceased
- 2001-01-12 US US10/181,289 patent/US20030012726A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3655333A (en) * | 1970-05-04 | 1972-04-11 | Dow Chemical Co | Process for producing anhydrous sodium chloride and purified saturated brine |
| US3760941A (en) * | 1971-05-04 | 1973-09-25 | Kali & Salz Ag | Process for preparing highly free flowing rock or table salt |
| US6048569A (en) * | 1996-06-21 | 2000-04-11 | Garcia; Fernando Horacio | Comestible liquid sea salt having a low sodium content and method for producing the same |
| US5935546A (en) * | 1996-09-14 | 1999-08-10 | Huels Aktiengesellschaft | Method for removing traces of heavy metals from concentrated alkali metal chloride solutions down into the range of 0.01 ppm |
| US6645458B1 (en) * | 1998-10-30 | 2003-11-11 | Solvay (Societe Anonyme) | Method for making an aqueous sodium chloride solution |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013150546A1 (fr) * | 2012-04-02 | 2013-10-10 | Council Of Scientific & Industrial Research | Production de sel de grande pureté présentant des niveaux d'impuretés réduits |
| CN104203825A (zh) * | 2012-04-02 | 2014-12-10 | 科学工业研究委员会 | 杂质水平降低了的高纯度盐的生产 |
| US9090478B2 (en) | 2012-04-02 | 2015-07-28 | Council Of Scientific & Industrial Research | Production of high purity salt with reduced levels of impurities |
| AU2013245187B2 (en) * | 2012-04-02 | 2016-09-15 | Council Of Scientific & Industrial Research | Production of high purity salt with reduced levels of impurities |
| US10914519B2 (en) * | 2013-05-07 | 2021-02-09 | Andritz Technology And Asset Management Gmbh | Method for producing salts with a reduced water of crystallisation content |
| CN108323745A (zh) * | 2018-03-20 | 2018-07-27 | 天津长芦汉沽盐场有限责任公司 | 一种含晶型修复工序的精制粉碎洗涤盐生产方法 |
| CN117069128A (zh) * | 2023-09-11 | 2023-11-17 | 昆明理工大学 | 多组分废盐熔融多场调控相变分级分离纯化装置及使用方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2001067893A1 (fr) | 2001-09-20 |
| CN1395470A (zh) | 2003-02-05 |
| KR20010069159A (ko) | 2001-07-23 |
| KR100427012B1 (ko) | 2004-04-30 |
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