JPS54152662A - Fine powder caking method - Google Patents
Fine powder caking methodInfo
- Publication number
- JPS54152662A JPS54152662A JP6191878A JP6191878A JPS54152662A JP S54152662 A JPS54152662 A JP S54152662A JP 6191878 A JP6191878 A JP 6191878A JP 6191878 A JP6191878 A JP 6191878A JP S54152662 A JPS54152662 A JP S54152662A
- Authority
- JP
- Japan
- Prior art keywords
- fine powder
- steam
- powder
- caking
- autoclave
- 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
- 239000000843 powder Substances 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 3
- 238000000465 moulding Methods 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000004140 cleaning Methods 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 1
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 1
- 239000000920 calcium hydroxide Substances 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 238000010828 elution Methods 0.000 abstract 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
Landscapes
- Gasification And Melting Of Waste (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
PURPOSE: To prevent elution of heavy metals, etc. from fine powder, discharged from a process for cleaning iron making or incineration exhaust gas, by mixing the powder with a caking accelerator such as silicic acid as required followed by molding in the presence of a Ca component and treatment with steam in an autoclave.
CONSTITUTION: Fine powder discharged from an exhaust gas cleaning process is optionally mixed with a caking accelerator such as a siliceous substance, clay, an Al cpd. or waste contg. them followed by molding in the presence of above 10% as CaO of a Ca component such as slaked lime. The moldings are charged into an autoclave using steam as a medium and allowed to stand in the presence of pressurized steam at 600W1000°C or 1000W1400°C in a special case for about 5W60 min to be caked. Thus, the handleability of the powder is improved, the cakes can be used as aggregate, etc., and the burying land area can be reduced.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6191878A JPS54152662A (en) | 1978-05-24 | 1978-05-24 | Fine powder caking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6191878A JPS54152662A (en) | 1978-05-24 | 1978-05-24 | Fine powder caking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54152662A true JPS54152662A (en) | 1979-12-01 |
Family
ID=13185016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6191878A Pending JPS54152662A (en) | 1978-05-24 | 1978-05-24 | Fine powder caking method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54152662A (en) |
-
1978
- 1978-05-24 JP JP6191878A patent/JPS54152662A/en active Pending
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