GB334169A - Improvements in the separation of soluble substances - Google Patents
Improvements in the separation of soluble substancesInfo
- Publication number
- GB334169A GB334169A GB8285/29A GB828529A GB334169A GB 334169 A GB334169 A GB 334169A GB 8285/29 A GB8285/29 A GB 8285/29A GB 828529 A GB828529 A GB 828529A GB 334169 A GB334169 A GB 334169A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elutriation
- sieving
- separation
- grading
- followed
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
334,169. Imperial Chemical Industries, Ltd., and Cocksedge, H. E. March 14, 1929. Wet-separating.-Soluble substances are treated by simultaneous crystallization from a common solution followed by mechanical separation. The separation may consist in first grading by size e.g. by sieving and then by density e.g. by elutriation in an inert liquid, or the size of the particles of one or both of the substances may be controlled during crystallization by seeding, addition to super-saturated solutions, or the addition of colloids such as gelatine, and the mixture of crystals separated by a single grading which may be either sieving or elutriation. Instead of elutriation grading by density may be effected by pneumatic means, centrifugal action, or Wilfley table action. Examples are given of the separation of sodium nitrate and potassium nitrate by sieving followed by elutriation in a solution saturated with both salts, and of sodium carbonate and sodium chloride by control of particle size during crystallization followed by sieving or elutriation or both. In the example the control of particle size is effected by seeding with small crystals of sodium chloride produced in the solution by shock cooling. Specifications 144,022; and 322,480, [Class 117, Sifting &c.], are referred to.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8285/29A GB334169A (en) | 1929-03-14 | 1929-03-14 | Improvements in the separation of soluble substances |
| FR691642D FR691642A (en) | 1929-03-14 | 1930-03-10 | Process for the separation of soluble substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8285/29A GB334169A (en) | 1929-03-14 | 1929-03-14 | Improvements in the separation of soluble substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB334169A true GB334169A (en) | 1930-08-14 |
Family
ID=9849571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8285/29A Expired GB334169A (en) | 1929-03-14 | 1929-03-14 | Improvements in the separation of soluble substances |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR691642A (en) |
| GB (1) | GB334169A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2699456A (en) * | 1949-10-19 | 1955-01-11 | Hooker Electrochemical Co | Fluid classification of benzene hexachloride isomers |
| GB2293559B (en) * | 1993-05-25 | 1997-06-11 | Environmental Projects Inc | Beneficiation of saline minerals |
-
1929
- 1929-03-14 GB GB8285/29A patent/GB334169A/en not_active Expired
-
1930
- 1930-03-10 FR FR691642D patent/FR691642A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2699456A (en) * | 1949-10-19 | 1955-01-11 | Hooker Electrochemical Co | Fluid classification of benzene hexachloride isomers |
| GB2293559B (en) * | 1993-05-25 | 1997-06-11 | Environmental Projects Inc | Beneficiation of saline minerals |
Also Published As
| Publication number | Publication date |
|---|---|
| FR691642A (en) | 1930-10-23 |
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