JPS57141489A - Method for granulating high softening point pitch into small-diameter pencil-like product - Google Patents
Method for granulating high softening point pitch into small-diameter pencil-like productInfo
- Publication number
- JPS57141489A JPS57141489A JP2755981A JP2755981A JPS57141489A JP S57141489 A JPS57141489 A JP S57141489A JP 2755981 A JP2755981 A JP 2755981A JP 2755981 A JP2755981 A JP 2755981A JP S57141489 A JPS57141489 A JP S57141489A
- Authority
- JP
- Japan
- Prior art keywords
- pitch
- small
- liquid
- cooled
- diameter
- 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
- Working-Up Tar And Pitch (AREA)
Abstract
PURPOSE: To provide a small-diameter pencil-like product having high strength, by heating and melting high-softening point pitch and allowing it to flow down in the form of a small-diameter rod, to pass through a high-boiling point liquid and then to be cooled with water.
CONSTITUTION: High softening-point pitch is introduced into an inner vessel 3 through a feeding opening 11 to be heated and molten. The molten pitch P flows down through an outlet nozzle 7 having an opening degree controlled in the form of a small-diameter rod to pass through a pure liquid or a mixed liquid L being cooled by it. The liquid L has a specific gravity of 1.0 or less, a boiling point of 150W450°C and a surface tension of 20W60 dyne/cm (20°C). Subsequently, the pitch is cooled with water W to be granulated into small-diameter pencil-like matter. When the molten pitch flows down into the pure liquid or mixed liquid, the cooling liquid L in a surface that is in contact with the pitch is heated. As a result, a temperature difference between the pitch and the liquid L becomes small and the pitch is cooled gradually. Thus, the formation of residual stress is little, and the granulated matter having high strength can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2755981A JPS57141489A (en) | 1981-02-26 | 1981-02-26 | Method for granulating high softening point pitch into small-diameter pencil-like product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2755981A JPS57141489A (en) | 1981-02-26 | 1981-02-26 | Method for granulating high softening point pitch into small-diameter pencil-like product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57141489A true JPS57141489A (en) | 1982-09-01 |
Family
ID=12224399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2755981A Pending JPS57141489A (en) | 1981-02-26 | 1981-02-26 | Method for granulating high softening point pitch into small-diameter pencil-like product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57141489A (en) |
-
1981
- 1981-02-26 JP JP2755981A patent/JPS57141489A/en active Pending
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