JPS5763643A - Manufacture of reduced pellet with continuousky moving grate - Google Patents
Manufacture of reduced pellet with continuousky moving grateInfo
- Publication number
- JPS5763643A JPS5763643A JP13901980A JP13901980A JPS5763643A JP S5763643 A JPS5763643 A JP S5763643A JP 13901980 A JP13901980 A JP 13901980A JP 13901980 A JP13901980 A JP 13901980A JP S5763643 A JPS5763643 A JP S5763643A
- Authority
- JP
- Japan
- Prior art keywords
- grate
- carbonate
- manufacture
- moving grate
- limestone
- 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
- 239000008188 pellet Substances 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 2
- 235000019738 Limestone Nutrition 0.000 abstract 2
- -1 carbonate compound Chemical class 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 239000008187 granular material Substances 0.000 abstract 2
- 239000006028 limestone Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000003009 desulfurizing effect Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 239000007858 starting material Substances 0.000 abstract 1
- 238000005979 thermal decomposition reaction Methods 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 abstract 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
PURPOSE: To cool and protect a continuously moving grate by the endothermic reaction of a carbonate compound such as limestone by the thermal decomposition by directly putting the carbonate compound on the grate in the manufacture of reduced pellets by heating and hardening on the grate.
CONSTITUTION: Starting material 6 for reduced pellets is mounted on a continuously moving grate 2 and dried, preheated and sintered in a drying chamber 7, a preheating chamber 8 and a hardening chamber 9 with waste heat from a rotary kiln at 200W400°C, 400W600°C and 900W1,200°C, respectively. At this time, coarse granules 5 of alkaline earth metallic carbonate such as limestone are spread on the grate 2, and the pellet material 6 is mounted on the granules 5. When the carbonate is thermally decomposed, it is converted into alkaline earth metallic oxide such as CaO while releasing CO2. By this endothermic reaction the grate 2 is cooled and prevented from being overheated. The produced CaO is utilized as a desulfurizing agent in the rotary kiln.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13901980A JPS6014816B2 (en) | 1980-10-03 | 1980-10-03 | Method for producing reduced pellets using a continuous moving grate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13901980A JPS6014816B2 (en) | 1980-10-03 | 1980-10-03 | Method for producing reduced pellets using a continuous moving grate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5763643A true JPS5763643A (en) | 1982-04-17 |
| JPS6014816B2 JPS6014816B2 (en) | 1985-04-16 |
Family
ID=15235573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13901980A Expired JPS6014816B2 (en) | 1980-10-03 | 1980-10-03 | Method for producing reduced pellets using a continuous moving grate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6014816B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100412225B1 (en) * | 1999-06-30 | 2003-12-31 | 주식회사 포스코 | Apparatus for manufacturing an iron mine sinter and method of it |
-
1980
- 1980-10-03 JP JP13901980A patent/JPS6014816B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100412225B1 (en) * | 1999-06-30 | 2003-12-31 | 주식회사 포스코 | Apparatus for manufacturing an iron mine sinter and method of it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6014816B2 (en) | 1985-04-16 |
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