JPS55165249A - Production of silica sand for casting - Google Patents
Production of silica sand for castingInfo
- Publication number
- JPS55165249A JPS55165249A JP7197379A JP7197379A JPS55165249A JP S55165249 A JPS55165249 A JP S55165249A JP 7197379 A JP7197379 A JP 7197379A JP 7197379 A JP7197379 A JP 7197379A JP S55165249 A JPS55165249 A JP S55165249A
- Authority
- JP
- Japan
- Prior art keywords
- silica sand
- magnetic
- screened
- remove
- thermal expansion
- 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
Abstract
PURPOSE: To prevent the deposition of the magnetic material of fine particles, enhance the removal efficiency of magnetic material, decrease the coefficient of thermal expansion of silica sand and improve deflective strength by air-screening the silica sand prior to magnetic separation thereby removing fine particles.
CONSTITUTION: Prior to magnetic separation, silica sand is air-screened to remove the particles of the specified sizes or less contained in the silica sand. Next, this silica sand is passed in a high magnetic field to remove the magnetic components having relatively high coefficient of thermal expansion such as silicic acid anhydride, biotite and magnetite contained in the silica sand. The similar effect is also provided even with the artificial silica sand which has been artificially ground and having been screened.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7197379A JPS55165249A (en) | 1979-06-07 | 1979-06-07 | Production of silica sand for casting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7197379A JPS55165249A (en) | 1979-06-07 | 1979-06-07 | Production of silica sand for casting |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55165249A true JPS55165249A (en) | 1980-12-23 |
Family
ID=13475911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7197379A Pending JPS55165249A (en) | 1979-06-07 | 1979-06-07 | Production of silica sand for casting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55165249A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58128248A (en) * | 1982-01-28 | 1983-07-30 | Nippon Chuzo Kk | Separation of old waste in old sand |
-
1979
- 1979-06-07 JP JP7197379A patent/JPS55165249A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58128248A (en) * | 1982-01-28 | 1983-07-30 | Nippon Chuzo Kk | Separation of old waste in old sand |
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