JPS569221A - Manufacture of gypsum - Google Patents
Manufacture of gypsumInfo
- Publication number
- JPS569221A JPS569221A JP8524179A JP8524179A JPS569221A JP S569221 A JPS569221 A JP S569221A JP 8524179 A JP8524179 A JP 8524179A JP 8524179 A JP8524179 A JP 8524179A JP S569221 A JPS569221 A JP S569221A
- Authority
- JP
- Japan
- Prior art keywords
- gypsum
- slurry
- manufacture
- sox
- gas
- 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.)
- Pending
Links
- 229910052602 gypsum Inorganic materials 0.000 title abstract 6
- 239000010440 gypsum Substances 0.000 title abstract 6
- 238000004519 manufacturing process Methods 0.000 title abstract 4
- 239000002002 slurry Substances 0.000 abstract 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract 2
- 235000011941 Tilia x europaea Nutrition 0.000 abstract 2
- 238000010521 absorption reaction Methods 0.000 abstract 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 abstract 2
- 239000004571 lime Substances 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 2
- 238000007254 oxidation reaction Methods 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- 239000003463 adsorbent Substances 0.000 abstract 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
PURPOSE: To manufacture gypsum from especially thick SOx-contg. gas while reducing the quantity of heat by feeding the gas and a lime slurry to an oxidizing apparatus and carrying out SOx absorption and oxidation in the presence of O2 at a specified temp. and pH under pressure.
CONSTITUTION: Thick SOx-contg. gas 5 generated from adsorbent regenerator 3 is introduced into oxidizing apparatus 6, and lime slurry 7 and air or O2 8 are fed to accomplish SOx absorption, oxidation and conversion into gypsum. At this time, appratus 6 is run at ≥100,preferably 100W130°C and ≤8, preferably 3W 5pH. α-Type hemihydrate gypsum slurry 9 drawn out of apparatus 6 is filtered and dried to obtain α-type hemihydrate gypsum 10. Gypsum 10 is then dehydrated by heating at ≥200°C to manufacture anhydrous gypsum. Slurry 9 may be introduced into apparatus 11 for converting slurry 9 into gypsum and retained at 60W90°C for ≥30 min to manufacture gypsum 12.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8524179A JPS569221A (en) | 1979-07-05 | 1979-07-05 | Manufacture of gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8524179A JPS569221A (en) | 1979-07-05 | 1979-07-05 | Manufacture of gypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS569221A true JPS569221A (en) | 1981-01-30 |
Family
ID=13853058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8524179A Pending JPS569221A (en) | 1979-07-05 | 1979-07-05 | Manufacture of gypsum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS569221A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330246A (en) * | 2019-06-21 | 2019-10-15 | 李思言 | The technique that epitaxial blocked method and crystal rearrangement method change new ardealite condensation performance |
-
1979
- 1979-07-05 JP JP8524179A patent/JPS569221A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110330246A (en) * | 2019-06-21 | 2019-10-15 | 李思言 | The technique that epitaxial blocked method and crystal rearrangement method change new ardealite condensation performance |
| CN110330246B (en) * | 2019-06-21 | 2022-02-22 | 李思言 | Crystal film blocking method and process for changing coagulation property of new phosphogypsum by crystal rearrangement method |
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