JP2000290735A5 - - Google Patents
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- JP2000290735A5 JP2000290735A5 JP1999101175A JP10117599A JP2000290735A5 JP 2000290735 A5 JP2000290735 A5 JP 2000290735A5 JP 1999101175 A JP1999101175 A JP 1999101175A JP 10117599 A JP10117599 A JP 10117599A JP 2000290735 A5 JP2000290735 A5 JP 2000290735A5
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- JP
- Japan
- Prior art keywords
- reduction
- hydrocarbon
- based gas
- molten metal
- amount
- 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.)
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Description
なお炭化水素系ガスは本来溶湯中の酸素の還元のために吹込むのであるから、炭化水素系ガスとともに吹込む空気の量は、炭化水素系ガスが完全燃焼して、ＣＯ2 およびＨ2 Ｏのみとなってしまわないように、炭化水素系ガスの理論空気燃焼量よりも少なければならない。具体的には吹込み空気量は理論空気燃焼量の５〜３０％程度の範囲内となるように定めることが望ましく、したがって還元開始前の溶湯温度に応じて炭化水素系ガスと空気との吹込み流量比を定めるにあたっても、炭化水素系ガスの成分組成に応じてその理論空気燃焼量の５〜３０％の範囲内の空気吹込量が得られるように定めることが望ましい。 Since the hydrocarbon-based gas is originally blown to reduce oxygen in the molten metal, the amount of air blown together with the hydrocarbon-based gas is determined by the complete combustion of the hydrocarbon-based gas and CO 2 and H 2 O. It must be less than the stoichiometric amount of hydrocarbon-based gas burned so that it is not lost. Specifically, it is desirable that the amount of air blown be determined to be in the range of about 5 to 30% of the theoretical air combustion amount. Therefore, the blowing of hydrocarbon-based gas and air depends on the molten metal temperature before the start of reduction. In determining the flow rate ratio, it is desirable that the air blowing amount be in the range of 5 to 30% of the theoretical air combustion amount according to the component composition of the hydrocarbon-based gas.
以上のような精製炉での操業を、合計７８チャージ行ない、還元開始直前の溶湯温度と還元終了時の溶湯温度との関係を調べたところ、図１に示す結果が得られた。また還元工程中の溶湯温度変化量（［還元終了後の溶湯温度］−［還元開始直前の溶湯温度］）を、還元開始直前の溶湯温度に対応して図２に示す。 The above-described operation in the refining furnace was carried out for a total of 78 charges, and the relationship between the molten metal temperature immediately before the start of the reduction and the molten metal temperature at the end of the reduction was examined. The result shown in FIG. 1 was obtained. The molten metal temperature variation during the reduction step - the ([melt temperature after completion of reduction] [melt temperature of the reduction immediately before the start]), shown in FIG. 2 corresponds to the melt temperature of the reduction just before the start.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10117599A JP4217849B2 (en) | 1999-04-08 | 1999-04-08 | Reduction treatment method in dry purification of crude copper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10117599A JP4217849B2 (en) | 1999-04-08 | 1999-04-08 | Reduction treatment method in dry purification of crude copper |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000290735A JP2000290735A (en) | 2000-10-17 |
| JP2000290735A5 true JP2000290735A5 (en) | 2006-05-18 |
| JP4217849B2 JP4217849B2 (en) | 2009-02-04 |
Family
ID=14293678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10117599A Expired - Lifetime JP4217849B2 (en) | 1999-04-08 | 1999-04-08 | Reduction treatment method in dry purification of crude copper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4217849B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4295134B2 (en) * | 2004-02-27 | 2009-07-15 | 日鉱金属株式会社 | Refining furnace operation method |
| KR101620724B1 (en) | 2014-10-20 | 2016-05-13 | 주식회사 포스코 | Method for collecting hydrogen gas produced from hydrometallurgical process and method for collecting valuable metal from ore |
-
1999
- 1999-04-08 JP JP10117599A patent/JP4217849B2/en not_active Expired - Lifetime
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