JPS5711820A - Preparation of spherical hard alkali carbonate and its use - Google Patents

Preparation of spherical hard alkali carbonate and its use

Info

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
Application number
JP8451680A
Other languages
Japanese (ja)
Other versions
JPS6138128B2 (en
Inventor
Hiroshi Yamada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokuyama Corp
Original Assignee
Tokuyama Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokuyama Corp filed Critical Tokuyama Corp
Priority to JP8451680A priority Critical patent/JPS5711820A/en
Publication of JPS5711820A publication Critical patent/JPS5711820A/en
Publication of JPS6138128B2 publication Critical patent/JPS6138128B2/ja
Granted legal-status Critical Current

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
JP8451680A 1980-06-24 1980-06-24 Preparation of spherical hard alkali carbonate and its use Granted JPS5711820A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009084121A (en) * 2007-10-01 2009-04-23 Kao Corp Composite powder

Cited By (1)

* Cited by examiner, † Cited by third party
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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