JPS5711820A - Preparation of spherical hard alkali carbonate and its use - Google Patents
Preparation of spherical hard alkali carbonate and its useInfo
- Publication number
- JPS5711820A JPS5711820A JP8451680A JP8451680A JPS5711820A JP S5711820 A JPS5711820 A JP S5711820A JP 8451680 A JP8451680 A JP 8451680A JP 8451680 A JP8451680 A JP 8451680A JP S5711820 A JPS5711820 A JP S5711820A
- Authority
- JP
- Japan
- Prior art keywords
- alkali carbonate
- spherical hard
- carbonate
- alkali
- preparation
- 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.)
- Granted
Links
Landscapes
- Glanulating (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
PURPOSE: A spherical hard alkali carbonate capable of carrying out efficiently the desulfurization of melt iron alloy through air stream introduction into it, having specific diameter and bulk specific gravity.
CONSTITUTION: A liquid consisting of one or more aqueous solutions of alkali carbonate (especially sodium carbonate) or caustic alkali (e.g., NaOH) and sodium silicate is prepared. In the preparation, the amount of sodium silicate used is 1W 4wt% based on total amount of alkali carbonate and caustic alkali. The liqud is sprayed from the top of a fluidized bed type granulating and drying device to a granulating layer, and a heated gas preferably containing CO2 is introduced into the layer from the bottom of the device at an empty column speed 20W120cm/sec., to granulate the desired spherical hard alkali carbonate. The granulation temperature is 70W400°C. The prepared spherical hard alkali carbonate has diameters 0.4W 4.0mm and a bulk specific gravity ≥1.2, and it is useful for the desulfurization of melt iron alloy through air stream introduction into it.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8451680A JPS5711820A (en) | 1980-06-24 | 1980-06-24 | Preparation of spherical hard alkali carbonate and its use |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8451680A JPS5711820A (en) | 1980-06-24 | 1980-06-24 | Preparation of spherical hard alkali carbonate and its use |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5711820A true JPS5711820A (en) | 1982-01-21 |
JPS6138128B2 JPS6138128B2 (en) | 1986-08-27 |
Family
ID=13832790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8451680A Granted JPS5711820A (en) | 1980-06-24 | 1980-06-24 | Preparation of spherical hard alkali carbonate and its use |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5711820A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009084121A (en) * | 2007-10-01 | 2009-04-23 | Kao Corp | Composite powder |
-
1980
- 1980-06-24 JP JP8451680A patent/JPS5711820A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009084121A (en) * | 2007-10-01 | 2009-04-23 | Kao Corp | Composite powder |
Also Published As
Publication number | Publication date |
---|---|
JPS6138128B2 (en) | 1986-08-27 |
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