ES460576A3 - A procedure for the preparation of an anhydrite. (Machine-translation by Google Translate, not legally binding) - Google Patents
A procedure for the preparation of an anhydrite. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES460576A3 ES460576A3 ES460576A ES460576A ES460576A3 ES 460576 A3 ES460576 A3 ES 460576A3 ES 460576 A ES460576 A ES 460576A ES 460576 A ES460576 A ES 460576A ES 460576 A3 ES460576 A3 ES 460576A3
- Authority
- ES
- Spain
- Prior art keywords
- microns
- equal
- anhydrite
- diameter
- proportion
- 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
- 229910052925 anhydrite Inorganic materials 0.000 title abstract 5
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 4
- 238000002360 preparation method Methods 0.000 title abstract 2
- 238000001033 granulometry Methods 0.000 abstract 4
- 239000002245 particle Substances 0.000 abstract 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract 2
- 239000012190 activator Substances 0.000 abstract 1
- 239000002671 adjuvant Substances 0.000 abstract 1
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 abstract 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000000227 grinding Methods 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- FWFGVMYFCODZRD-UHFFFAOYSA-N oxidanium;hydrogen sulfate Chemical class O.OS(O)(=O)=O FWFGVMYFCODZRD-UHFFFAOYSA-N 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 150000004760 silicates Chemical class 0.000 abstract 1
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
A process for the preparation of an anhydrite characterized by containing more than 93% CaSO4 of the variety called insoluble, a porous volume of less than 0.29 cc/g for stoppages with radii less than 6.6 microns, a granulometry comprising a proportion of particles with a diameter less than 10 microns greater than or equal to 15% by weight and a proportion of particles with a diameter greater than 20 microns greater than or equal to 20%, with an average diameter of between 5 and 30 microns, the process comprising successively a calcination at a temperature between 450 and 1200ºC of the residual phosphosphoses from the manufacture of phosphoric acid by the wet process, carried out in such a way that the leaving product appears in the form of granules with a granulometry at least equal to the initial granulometry and a grinding regulated in such a way that it leads to a granulometry that includes a proportion of particles with a diameter of less than 10 microns. rioro equal to 15% by weight and a proportion of particles with a diameter greater than 20 microns greater than or equal to 20%, with an average diameter comprised between 5 and 30 microns optionally, combining 96 to 99% of the anhydrite from the previous stage with 0.5 to 4% of activators consisting of mineral adjuvants such as alkaline earth oxide and hydroxide sulfates and alkaline silicates, used alone or in mixture, characterized by using the aforementioned anhydrite. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES460576A ES460576A3 (en) | 1977-07-08 | 1977-07-08 | A procedure for the preparation of an anhydrite. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES460576A ES460576A3 (en) | 1977-07-08 | 1977-07-08 | A procedure for the preparation of an anhydrite. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES460576A3 true ES460576A3 (en) | 1978-12-01 |
Family
ID=8474175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES460576A Expired ES460576A3 (en) | 1977-07-08 | 1977-07-08 | A procedure for the preparation of an anhydrite. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES460576A3 (en) |
-
1977
- 1977-07-08 ES ES460576A patent/ES460576A3/en not_active Expired
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