GB861416A - Production of boric acid - Google Patents
Production of boric acidInfo
- Publication number
- GB861416A GB861416A GB844/59A GB84459A GB861416A GB 861416 A GB861416 A GB 861416A GB 844/59 A GB844/59 A GB 844/59A GB 84459 A GB84459 A GB 84459A GB 861416 A GB861416 A GB 861416A
- Authority
- GB
- United Kingdom
- Prior art keywords
- temperature
- pressure
- sodium borate
- boric acid
- sodium
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B35/00—Boron; Compounds thereof
- C01B35/06—Boron halogen compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B35/00—Boron; Compounds thereof
- C01B35/08—Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium
- C01B35/10—Compounds containing boron and oxygen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Boric acid is produced in a cyclic process from an aqueous solution of sodium borate containing CO2 having an Na2O : B2O3 molar ratio within the range 0.3 : 1 to 0.38 : 1, which comprises, alternatively increasing and decreasing the temperature of the solution within the range 25-75 DEG C. and increasing or decreasing in the same sense the pressure of CO2, sodium bicarbonate being removed from the solution at stages of higher pressure and temperature and boric acid being removed at stages of lower pressure and temperature, and a sodium borate addition and, if necessary an addition of water sufficient to ensure that the amount of water present is equal to the stoichiometric requirement for the reaction of CO2 and sodium borate, being made in each cycle. Pressures of 30-615 p.s.i.a. of CO2 are preferably employed and in those cycles where sodium borates such as sodium tetraborate are employed the requirements of water is satisfied by the addition in each cycle of controlled amounts of a mixture of sodium borate penta-and deca-hydrates. The sodium borate addition may be made at any convenient stage in the cycle which may also be started at any desired stage. The process may be continuous or operated batch-wise. Specific examples are given of the preparation of a solution of sodium borate at a particular CO2 pressure and temperature and having a predetermined composition of boric acid mother liquor based on calculations from formul given for any particular temperature and pressure, followed by either (a) the addition of sodium borate to the solution, together with an increase in the temperature and CO2 pressure to effect crystallization of the sodium bicarbonate which is removed and thereafter lowering the temperature of the mother liquor and CO2 pressure to their original values to effect crystallization of the boric acid which is also removed, the mother liquor being recycled, or (b) increasing the temperature and CO2 pressure to crystallize the sodium bicarbonate which is removed, adding sodium borate to the mother liquor, lowering the temperature and CO2 pressure to their original values, crystallizing the boric acid and removing it and recycling the mother liquor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US861416XA | 1958-02-13 | 1958-02-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB861416A true GB861416A (en) | 1961-02-22 |
Family
ID=22196537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB844/59A Expired GB861416A (en) | 1958-02-13 | 1959-01-09 | Production of boric acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB861416A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3336115A (en) * | 1963-11-21 | 1967-08-15 | American Potash & Chem Corp | Separately crystallizing boric acid and alkali sulfate from aqueous solution by evaporation at different temperatures |
| US4022871A (en) * | 1974-12-16 | 1977-05-10 | Solvay & Cie | Process for the fabrication of sodium bicarbonate and boric acid from borosodium ores |
| WO2010140989A1 (en) | 2009-06-05 | 2010-12-09 | Eti Maden Isletmeleri Genel Mudurlugu | Production of boric carbonate and sodium bicarbonate from sodium borate solvents |
| CN105480986A (en) * | 2014-10-15 | 2016-04-13 | 刘浩 | Boric acid preparation method |
| CN105480987A (en) * | 2015-11-04 | 2016-04-13 | 沈阳化工大学 | Reinforced optimized preparation method for boric acid through one-step process |
-
1959
- 1959-01-09 GB GB844/59A patent/GB861416A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3336115A (en) * | 1963-11-21 | 1967-08-15 | American Potash & Chem Corp | Separately crystallizing boric acid and alkali sulfate from aqueous solution by evaporation at different temperatures |
| US4022871A (en) * | 1974-12-16 | 1977-05-10 | Solvay & Cie | Process for the fabrication of sodium bicarbonate and boric acid from borosodium ores |
| WO2010140989A1 (en) | 2009-06-05 | 2010-12-09 | Eti Maden Isletmeleri Genel Mudurlugu | Production of boric carbonate and sodium bicarbonate from sodium borate solvents |
| CN105480986A (en) * | 2014-10-15 | 2016-04-13 | 刘浩 | Boric acid preparation method |
| CN105480987A (en) * | 2015-11-04 | 2016-04-13 | 沈阳化工大学 | Reinforced optimized preparation method for boric acid through one-step process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB963089A (en) | Process for the production of fluorine compounds from fluosilicic acid | |
| GB861416A (en) | Production of boric acid | |
| GB1111727A (en) | Process for the preparation of alkali metal borohydrides | |
| GB1017605A (en) | Improvements in or relating to the preparation of dialkyl terephthalates | |
| GB873212A (en) | Process for the manufacture of 1:1:1-trifluoro-2-chloro-2-bromethane | |
| GB652855A (en) | Improvements in or relating to the production of anhydrous hydrazine | |
| GB992742A (en) | Preparation of permonosulphates | |
| GB848598A (en) | Production of chloroprene | |
| GB772345A (en) | Improvements in or relating to preparation of polyvinylamine | |
| GB834594A (en) | Preparation of perchloryl fluoride | |
| GB821388A (en) | Method of preparing alkali metal hypophosphites | |
| GB1006352A (en) | Production of salts or sorbic acid | |
| GB635553A (en) | Improvements in or relating to the production of aluminium fluoride from aluminium-ammonium fluoride | |
| GB761371A (en) | Improvements in or relating to the manufacture of sodium perborate | |
| ES387549A1 (en) | Process for making sodium perborate tetrahydrate | |
| GB554126A (en) | Improvements in and relating to the production of sodium fluoride | |
| GB776113A (en) | Improvements in or relating to the production of beta-hydroxy-ethyl-hydrazine | |
| GB958866A (en) | Production of ethylene sulphide | |
| GB944121A (en) | Improvements in or relating to the production of sodium perborate | |
| GB949265A (en) | Method for preparing diboron tetrafluoride | |
| GB848345A (en) | Production of beryllium flouride | |
| GB796779A (en) | Process for producing chlorine dioxide | |
| GB756639A (en) | Method for the production of hydrazine | |
| GB905759A (en) | Process for the production of hydrates having low water content or salts free from water of crystallisation | |
| GB693108A (en) | Process for the production of easily filterable magnesia and ammonium-magnesium-double salt |