YS/T 1230.4-2018 in English
VALIDMethods for chemical analysis of copper anodes Part 4: Determination of oxygen content by pulsed infrared method
- Issued on:2018-04-30
- Implemented on:2018-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$145.00
| Standard No: | YS/T 1230.4-2018 |
| Document status: | VALID |
| Title in English: | Methods for chemical analysis of copper anodes Part 4: Determination of oxygen content by pulsed infrared method |
| Title in Chinese: | 阳极铜化学分析方法 第4部分：氧量的测定 脉冲红外法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2018-04-30 |
| Implemented on: | 2018-09-01 |
| ICS Classification: | 77.120.30-Copper and copper alloys |
| Chinese Classification: | H13-Heavy metals and their alloys analysis method |
| Professional Classification: | YS-Non-ferrous Metal |
| Related Keywords: | anode copper oxygen content
oxygen content oxygen content range repeatability limit copper anodes rapid oxygen determination |
Introduction
Standard Background and Technological Evolution
With the advancement of refined copper smelting processes, the oxygen content in anode copper directly impacts the quality of electrolytic copper. YS/T 1230.4-2018 replaces traditional chemical methods with a pulsed heating infrared absorptometer for rapid oxygen determination, achieving a detection limit of 0.00005%, a two-order-of-magnitude improvement over the previous standard.
Principle and Technical Characteristics of the Method
| Technical Indicators | Required Parameters | Comparison with Traditional Methods |
|---|---|---|
| Detection Principle | Pulse Heating→CO/CO₂ Conversion→Infrared Detection | Chemical Titration |
| Temperature Control | ≥2400℃（6.5kW） | Room Temperature Reaction |
| Analysis Time | 50 seconds/sample | 2 hours/sample |
Key Operating Specifications
Specimen Preparation
The specimen must be treated with acetic acid etching (1+2) for 10 minutes, rinsed with ethanol, and then air-dried to prevent surface oxidation and deviation. Overheating is prohibited during processing, and iron impurities must be separated using a magnet.
Instrument calibration
Calibrate using Oxygen standard sample in copper, recommended operating parameters:
- Degassing power: 3.5kW
- Analysis power: 2.8kW
- Flushing time: 30 seconds
Precision control
Tolerable deviation is determined by linear interpolation:
| Oxygen content range | Repeatability limit (r) | Reproducibility limit (R) |
|---|---|---|
| 0.0800% | 0.0109% | 0.0111% |
| 0.300% | 0.023% | 0.027% |
Implementation Suggestions
Typical Application Case
A smelter used a LECO ONH836 analyzer with a standard graphite crucible. When the anode copper oxygen content was measured at 0.211%, the difference between repeated measurements was 0.013%, meeting the standard requirement.
Troubleshooting Common Problems
- Abnormal Blank Value: Check the activity of the rare earth copper oxide furnace (3.4) and replace the magnesium perchlorate (3.5).
- Poor Linearity of Curve: Confirm that the purity of the power gas (3.2) is ≥99.99%.
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