JPS55162385A - Solidifying treatment of powdery waste material containing heavy metal - Google Patents
Solidifying treatment of powdery waste material containing heavy metalInfo
- Publication number
- JPS55162385A JPS55162385A JP6969179A JP6969179A JPS55162385A JP S55162385 A JPS55162385 A JP S55162385A JP 6969179 A JP6969179 A JP 6969179A JP 6969179 A JP6969179 A JP 6969179A JP S55162385 A JPS55162385 A JP S55162385A
- Authority
- JP
- Japan
- Prior art keywords
- autoclave
- waste material
- cooling
- powdery waste
- molded
- 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
- 239000002699 waste material Substances 0.000 title abstract 4
- 229910001385 heavy metal Inorganic materials 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 abstract 5
- 239000000463 material Substances 0.000 abstract 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract 2
- 229910052791 calcium Inorganic materials 0.000 abstract 2
- 239000011575 calcium Substances 0.000 abstract 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 2
- 239000000920 calcium hydroxide Substances 0.000 abstract 2
- 235000011116 calcium hydroxide Nutrition 0.000 abstract 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 abstract 2
- 239000011343 solid material Substances 0.000 abstract 2
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 abstract 1
- 239000000292 calcium oxide Substances 0.000 abstract 1
- 235000012255 calcium oxide Nutrition 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000306 component Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
PURPOSE: To solidify a powdery waste material at low cost in an energy saving manner as well as to prevent a harmful substance from being eluted by a method wherein a molded material of a powdery waste material is treated for a predetermined time within an autoclave and, at a time when cooled to 100°C or less, taken out as a solid material.
CONSTITUTION: A powdery waste material containing heavy metals is added with a solidification promoting agent or a reducing agent according to necessity and blended in the presence of a calcium component, thereafter molded. This molded material is subjected to steam autoclave treatment for a predetermined time within an autoclave and, after said molded material is cooled and the temp. within the autoclave is reached to 100°C or less, the obtained solid material is taken out into air and treated. As cooling means for cooling the autoclave temp. to 100°C or less, natural cooling, air cooling or water cooling is used. As an added calcium component, slaked lime, calcium carbonate, quick lime or the like can be used, but slaked lime is most pref.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6969179A JPS55162385A (en) | 1979-06-04 | 1979-06-04 | Solidifying treatment of powdery waste material containing heavy metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6969179A JPS55162385A (en) | 1979-06-04 | 1979-06-04 | Solidifying treatment of powdery waste material containing heavy metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55162385A true JPS55162385A (en) | 1980-12-17 |
Family
ID=13410137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6969179A Pending JPS55162385A (en) | 1979-06-04 | 1979-06-04 | Solidifying treatment of powdery waste material containing heavy metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55162385A (en) |
-
1979
- 1979-06-04 JP JP6969179A patent/JPS55162385A/en active Pending
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