CN100347084C - Process of extracting borax decahydrate from salt lake sediment - Google Patents
Process of extracting borax decahydrate from salt lake sediment Download PDFInfo
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- CN100347084C CN100347084C CNB2006100203266A CN200610020326A CN100347084C CN 100347084 C CN100347084 C CN 100347084C CN B2006100203266 A CNB2006100203266 A CN B2006100203266A CN 200610020326 A CN200610020326 A CN 200610020326A CN 100347084 C CN100347084 C CN 100347084C
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Abstract
The present invention discloses a method for extracting borax decahydrate from salt lake sediment. The processing steps comprise that A. grains of which the grain diameter are in a scope ranging from 0.8cm to 1.2cm is formed by crushing green ore of the salt lake sediment; B. raw materials which are crushed are poured in a container, and water of which the weight is two to three times as great as that of the raw materials is poured in the container and is uniformly blended; the mixed liquid is heated to 70 DEG C to 80 DEG C, and after the raw materials are completely dissolved, the mixed liquid is kept for 15 to 25 minutes at constant temperature; C. the water of which the weight is three to four times as great as that of the raw materials is poured in the mixed liquid of the constant temperature, the temperature of mixtures is reduced to 40 DEG C to 50 DEG C, and the temperature of mixtures is kept for 3.5 to 4.5 hours at constant temperature; D. saturated solution positioned at the upper part of the interior of a dissolver is poured in the other container, the product of borax decahydrate can be crystallized and separated out by evaporating and reducing the temperature to 10 DEG C to 37 DEG C. The present invention has the advantages of simple technical skill, low production cost, no pollution for environment, low energy consumption and high output value, and the present invention needs not add in chemical raw materials.
Description
Technical field
The present invention relates to a kind of preparation method of inorganic salt, particularly, the present invention relates to from salt lake sediment, extract the method for borax.
Background technology
Borax is a clear crystal, is the most important compound of boron.It is of many uses, can be used as the filler of washing powder and soap, also is the raw material of making opticglass, enamel and enamel, also can make artificial gems, welding agent etc., can cook heat-clearing and detoxicating drug after refining exquisiteness, cool in nature, sweet-salty can be controlled diseases such as swelling and pain in the throat, noma, aphtha, the living ocular of order.Borax also is commonly used for the metal-derusting agent, and on agricultural, borax also can serve as boron fertilizer.
Boron often is listed in rare elements abroad.Yet in China abundant native borax is arranged but, as be located in the salt lake sediment on ground such as Tibet, Xinjiang, Qinghai and just contain competent native borax.Main component is urao [Na
2CO
3NaHCO
32H
2O], saltcake [Na
2SO
410H
2O], native borax [Na
2O2B
2O
310H
2O] etc., main physical parameters sees the following form:
| The composition title | Density | Solvent temperature | Concentration | Tc |
| Urao [Na 2CO 3·NaHCO 3·2H 2O] | 2～2.14 | 35℃ | 30～33°Bé | -2～35℃ |
| Saltcake [Na 2SO 4·10H 2O] | 1.46 | 32.4℃ | 30～32°Bé | -5～10℃ |
| Native borax [Na 2O·2B 2O 3·10H 2O] | 1.7～1.72 | 70～80℃ | 6～20°Bé | 10～37℃ |
From the above: the crystallization concentration height of nitre, alkali, temperature is low, and borax needs could to be crystallized out under lower concentration and high-temperature.
The method of domestic production borax is mainly sulfuric acid process, carbonatation process, the interpretation of the law of pressurization alkali etc. at present, and all adopting with boron magnesium ore deposit is raw material, need add other industrial chemicals simultaneously to make auxiliary material, its technical sophistication, various being not easy of technical process grasped, and causes production cost to increase thus, and energy consumption is also big.In addition, far away because generally all remote mountain area, mining area, also there is the transportation cost height in ground factory process in raw materials for production are transported to from the mining area, the big and problems such as environmental pollution brought of expense.
Summary of the invention
The present invention is intended to overcome the defective of prior art, and a kind of method of extracting borax from salt lake sediment is provided.This method Technology is simple, does not need to add industrial chemicals, and production cost is low, environmentally safe, and energy consumption is low, output value height.
The technical solution used in the present invention is as follows:
A kind of method of extracting borax from salt lake sediment is characterized in that processing step is as follows:
A, raw material crushing: it is the particle of 0.8～1.2cm that the salt lake sediment crushing raw ore is become particle diameter;
B, dissolving: the raw material after the fragmentation is poured in the container, be incorporated as the water of 2～3 times of weight of raw material, mixing is heated to mixed solution 70～80 ℃ again, and raw material dissolves the back fully and continued constant temperature 15～25 minutes;
C, dilution cooling: in the mixed solution behind constant temperature, be incorporated as the water of 3～4 times of raw material weights again, and the temperature of mixture dropped to 40～50 ℃, constant temperature 3.5～4.5 hours;
D, crystallization: the saturated solution of container internal upper part is put in another container, and when evaporating and cooling to 10～37 ℃, i.e. the product borax decahydrate is separated out in crystallization.
The products obtained therefrom borax decahydrate can obtain anhydrous sodium tetraborate after thermal dehydration is handled.
The invention has the advantages that:
1, the present invention only need not add any industrial chemicals with water as auxiliary material, and production cost is low, environmentally safe.
2, Technology of the present invention is simple, can found the factory on the spot, has reduced transportation cost, and energy consumption is low, output value height.
3, the raw material of the present invention's employing is not for transporting the B that contains of value added
2O
3Be about 10% discarded ore deposit, saved limited resources effectively, turn waste into wealth.
4, the present invention has filled up a big blank of domestic system boron, has great economic benefit and social benefit.
Embodiment
Embodiment 1 salt lake is selected from the Bange lake in Tibet
A kind of method of extracting borax decahydrate from salt lake sediment is characterized in that processing step is as follows:
A, raw material crushing: it is the particle of 1cm that the salt lake sediment crushing raw ore is become particle diameter;
B, dissolving: the raw material after the fragmentation is poured in the container, be incorporated as the water of 2.5 times of weight of raw material, mixing is heated to mixed solution 70～80 ℃ again, and raw material dissolves the back fully and continued constant temperature 20 minutes;
C, dilution cooling: in the mixed solution behind constant temperature, be incorporated as the water of 3.5 times of raw material weights again, and the temperature of mixture dropped to 45 ℃, constant temperature 4 hours;
D, crystallization: the saturated solution of container internal upper part is put in another container, and when evaporating and cooling to 10～37 ℃, i.e. product borax decahydrate, wherein B are separated out in crystallization
2O
3Content be 36.51%
The products obtained therefrom borax decahydrate promptly obtains anhydrous sodium tetraborate after being heated to 400～500 ℃.
The cloth that embodiment 2 salt lakes are selected from the Zhongba County, Tibet is pricked coconut palm tea card lakeside (arrange in the autumn lake)
A kind of method of extracting borax decahydrate from salt lake sediment is characterized in that processing step is as follows:
A, raw material crushing: it is the particle of 0.8cm that the salt lake sediment crushing raw ore is become particle diameter;
B, dissolving: the raw material after the fragmentation is poured in the container, be incorporated as the water of 2 times of weight of raw material, mixing is heated to mixed solution 80 ℃ again, and raw material dissolves the back fully and continued constant temperature 15 minutes;
C, dilution cooling: in the mixed solution behind constant temperature, be incorporated as the water of 4 times of raw material weights again, and the temperature of mixture dropped to 40 ℃, constant temperature 4.5 hours;
D, crystallization: the saturated solution of container internal upper part is put in the crystallisation vessel, and when evaporating and cooling to 10～37 ℃, i.e. product borax decahydrate, wherein B are separated out in crystallization
2O
3Content be 41.3%.
The products obtained therefrom borax decahydrate can obtain anhydrous sodium tetraborate after thermal dehydration is handled.
Embodiment 3 salt lakes are selected from Tibet Mei Gahu
A kind of method of extracting borax decahydrate from salt lake sediment is characterized in that processing step is as follows:
A, raw material crushing: it is the particle of 1.2cm that the salt lake sediment crushing raw ore is become particle diameter;
B, dissolving: the raw material after the fragmentation is poured in the container, be incorporated as the water of 3 times of weight of raw material, mixing is heated to mixed solution 70 ℃ again, and raw material dissolves the back fully and continued constant temperature 25 minutes;
C, dilution cooling: in the mixed solution behind constant temperature, be incorporated as the water of 3 times of raw material weights again, and the temperature of mixture dropped to 50 ℃, constant temperature 3.5 hours;
D, crystallization: the saturated solution of container internal upper part is put in another container, and when evaporating and cooling to 10～37 ℃, i.e. product borax decahydrate, wherein B are separated out in crystallization
2O
3Content be 44.3%.
The products obtained therefrom borax decahydrate can obtain anhydrous sodium tetraborate after thermal dehydration is handled.
Claims (2)
1, a kind of method of extracting borax decahydrate from salt lake sediment is characterized in that processing step is as follows:
A, raw material crushing: it is the particle of 0.8～1.2cm that the salt lake sediment crushing raw ore is become particle diameter;
Described salt lake sediment is meant and is located in Tibet, Xinjiang, Qinghai that main component is urao [NaCO
3NaHCO
32H
2O], saltcake [Na
2SO
410H
2O], native borax [Na
2O2B
2O
310H
2O] mineral substance;
B, dissolving: the raw material after the fragmentation is poured in the container, be incorporated as the water of 2～3 times of weight of raw material, mixing is heated to mixed solution 70～80 ℃ again, and raw material dissolves the back fully and continued constant temperature 15～25 minutes:
C, dilution cooling: in the mixed solution behind constant temperature, be incorporated as the water of 3～4 times of raw material weights again, and the temperature of mixture dropped to 40～50 ℃, constant temperature 3.5～4.5 hours:
D, crystallization: the saturated solution of container internal upper part is put in another container, and when evaporating and cooling to 10～37 ℃, i.e. the product borax decahydrate is separated out in crystallization.
2, the method for extraction borax decahydrate according to claim 1 is characterized in that processing step is as follows:
A, raw material crushing: it is the particle of 1cm that the salt lake sediment crushing raw ore is become particle diameter;
B, dissolving: the raw material after the fragmentation is poured in the container, be incorporated as the water of 2.5 times of weight of raw material, mixing is heated to mixed solution 70～80 ℃ again, and raw material dissolves the back fully and continued constant temperature 20 minutes;
C, dilution cooling: in the mixed solution behind constant temperature, be incorporated as the water of 3.5 times of raw material weights again, and the temperature of mixture dropped to 45 ℃, constant temperature 4 hours;
D, crystallization: the saturated solution of container internal upper part is put in another container, and when evaporating and cooling to 10～37 ℃, i.e. the product borax decahydrate is separated out in crystallization.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100203266A CN100347084C (en) | 2006-02-21 | 2006-02-21 | Process of extracting borax decahydrate from salt lake sediment |
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| CNB2006100203266A CN100347084C (en) | 2006-02-21 | 2006-02-21 | Process of extracting borax decahydrate from salt lake sediment |
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|---|---|
| CN1810643A CN1810643A (en) | 2006-08-02 |
| CN100347084C true CN100347084C (en) | 2007-11-07 |
Family
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|---|---|---|---|
| CNB2006100203266A Expired - Fee Related CN100347084C (en) | 2006-02-21 | 2006-02-21 | Process of extracting borax decahydrate from salt lake sediment |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519212A (en) * | 2009-04-09 | 2009-09-02 | 严笳化 | Method for enriching borax pentahydrate from low-grade deposits of salt lake |
| CN101565188B (en) * | 2009-06-03 | 2011-07-27 | 邛崃市鸿丰钾矿肥有限责任公司 | Technique for preparing borax from brine |
| CN103641129A (en) * | 2013-12-06 | 2014-03-19 | 忻世和 | Method for desliming of raw borax ore in lake |
| CN103991878B (en) * | 2014-05-19 | 2016-02-10 | 中国科学院青海盐湖研究所 | The enriching method of low-grade native borax and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU420561A1 (en) * | 1971-11-11 | 1974-03-25 | A METHOD FOR GETTING A DECESSIVE BURAH | |
| US3910773A (en) * | 1970-04-06 | 1975-10-07 | Occidental Petroleum Corp | Beneficiation of salts crystallized from searles lake brine |
| SU1608116A1 (en) * | 1988-06-21 | 1990-11-23 | Предприятие П/Я А-7125 | Method of producing borax decahydrate |
| US5676916A (en) * | 1995-05-12 | 1997-10-14 | Sociedad Minera Salar De Atacama S.A. | Process for extracting the boron content in the brine of natural or industrial salt mines |
| RU2104949C1 (en) * | 1996-09-26 | 1998-02-20 | Закрытое акционерное общество "Кыштымский медеэлектролитный завод" | Method for production of pure nickel sulfate |
-
2006
- 2006-02-21 CN CNB2006100203266A patent/CN100347084C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3910773A (en) * | 1970-04-06 | 1975-10-07 | Occidental Petroleum Corp | Beneficiation of salts crystallized from searles lake brine |
| SU420561A1 (en) * | 1971-11-11 | 1974-03-25 | A METHOD FOR GETTING A DECESSIVE BURAH | |
| SU1608116A1 (en) * | 1988-06-21 | 1990-11-23 | Предприятие П/Я А-7125 | Method of producing borax decahydrate |
| US5676916A (en) * | 1995-05-12 | 1997-10-14 | Sociedad Minera Salar De Atacama S.A. | Process for extracting the boron content in the brine of natural or industrial salt mines |
| RU2104949C1 (en) * | 1996-09-26 | 1998-02-20 | Закрытое акционерное общество "Кыштымский медеэлектролитный завод" | Method for production of pure nickel sulfate |
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| CN1810643A (en) | 2006-08-02 |
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| C56 | Change in the name or address of the patentee |
Owner name: XIZANG XIGAZE GONGJIA BORON PROCESSING LIMITED Free format text: FORMER NAME: TIBET QIFA MINING CO., LTD. |
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Address after: 850000, Tibet Prefecture, Shigatse Prefecture, Zhongba County, PA Jiang Township Patentee after: Tibet Shigatse tribute boron Processing Co., Ltd. Address before: Cai Cun 850000 Tibet autonomous region Lhasa city Niangre road eqin Rexiang Patentee before: Tibet Qifa Mining Co., Ltd. |
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Granted publication date: 20071107 Termination date: 20180221 |
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