JPS5662643A - Activated bentonite - Google Patents
Activated bentoniteInfo
- Publication number
- JPS5662643A JPS5662643A JP13705579A JP13705579A JPS5662643A JP S5662643 A JPS5662643 A JP S5662643A JP 13705579 A JP13705579 A JP 13705579A JP 13705579 A JP13705579 A JP 13705579A JP S5662643 A JPS5662643 A JP S5662643A
- Authority
- JP
- Japan
- Prior art keywords
- bentonite
- bindability
- deterioration resistance
- raw soil
- kneaded
- 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
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
PURPOSE: To obtain activated bentonite of considerably improved bindability and heat deterioration resistance which is obtained by the chemical treatment of Ca. bentonite of poor bindability and heat deterioration resistance.
CONSTITUTION: Ca.bentonite raw soil contg. 20W40% moisture is rough-ground with a roll crusher to ≤10mm diameters and is fed to a continuous mixer, for example, a bag mill, by using a constant-volume feeder. Next, a predetermined amount of sodium carbonate is supplied from a separate constant-volume feeder to the bag mill and the rough mixing with the roughly ground raw soil, after which the mixture is powerfly incorporated and kneaded. This admixture having been kneaded to the extent of not feeling the remaining of the composition of the clay rock of the raw soil when pressed with the fingertips is dried to 5W10% moisture, after which it is pulverized. The resulted activated bentonite is 90W150 milli equiv. in total basicity, ≥60 millimole/100g in uncalcined methylene blue adsorption amount and ≥55% in the residual rate of 500°C and 1 hour-calcined methylene blue adsorption amount. It has superior bindability and thermal deterioration resistance as a binder for molding sand.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13705579A JPS5662643A (en) | 1979-10-25 | 1979-10-25 | Activated bentonite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13705579A JPS5662643A (en) | 1979-10-25 | 1979-10-25 | Activated bentonite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5662643A true JPS5662643A (en) | 1981-05-28 |
Family
ID=15189820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13705579A Pending JPS5662643A (en) | 1979-10-25 | 1979-10-25 | Activated bentonite |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5662643A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021519699A (en) * | 2018-03-30 | 2021-08-12 | アイメリーズ ユーエスエー，インコーポレーテッド | Compositions containing oxidized materials for sand casting and methods of preparation and use thereof |
-
1979
- 1979-10-25 JP JP13705579A patent/JPS5662643A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021519699A (en) * | 2018-03-30 | 2021-08-12 | アイメリーズ ユーエスエー，インコーポレーテッド | Compositions containing oxidized materials for sand casting and methods of preparation and use thereof |
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