GB/T 37308-2019 in English
VALIDOil-based needle coke
- Issued on:2019-03-25
- Implemented on:2020-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$78.00
| Standard No: | GB/T 37308-2019 |
| Document status: | VALID |
| Title in English: | Oil-based needle coke |
| Title in Chinese: | 油系针状焦 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2019-03-25 |
| Implemented on: | 2020-02-01 |
| ICS Classification: | 29.050-Conducting materials |
| Chinese Classification: | Q52-Carbon material |
| Professional Classification: | GB-National Standard |
| Related Keywords: | oil-based needle coke
37308-2019 oil-based needle coke needle coke oil-based needle coke introduction background negative electrode materials post-needle coke |
| Related Topics: | tar ti
oily oily Confocal system Tar Moisture Meter probe confocal focal + oil needle rhodium tar GBT37308 GB/T 37308-2019 Determination of sulfur content in dark petroleum products (tube furnace method) Jiao Yun's current situation oil measuring needle tar industry Needle Coke International Needle-like content |
《GB/T 37308-2019油系针状焦》由TC183（全国钢标准化技术委员会）归口，TC183SC15（全国钢标准化技术委员会炭素材料分会）执行，主管部门为中国钢铁工业协会。
Introduction
Background and significance of standard formulation
GB/T 37308-2019 Oil-based needle coke is a standard proposed by the China Iron and Steel Association in accordance with the requirements of the National Standardization Administration and managed by the National Steel Standardization Technical Committee. The formulation of this standard aims to standardize the product classification, technical requirements and test methods of oil-based needle coke to ensure that the product quality meets the requirements of high-end carbon products such as lithium-ion battery negative electrode materials and graphite electrodes.
Product Classification and Use
Oil-based needle coke can be divided into three categories according to its use:
- Pre-needle coke for lithium-ion battery negative electrode materials
- Post-needle coke for lithium-ion battery negative electrode materials
- Post-needle coke for graphite electrode
Interpretation of Technical Requirements
| Items | Indicators | |
|---|---|---|
| YFDQ-I | YFDQ-II | |
| True density/(g/cm³) | 1.35 | 1.35 |
| Sulfur content (mass fraction)/% | 0.40 | 0.50 |
Comparative analysis of standard frameworks
By comparing the technical indicators of needle coke for different purposes, it can be found that:
- Front needle coke focuses on high true density and low sulfur and nitrogen content.
- Post needle coke further reduces volatile matter and ash content and improves tap density.
Implementation recommendations and precautions
To ensure compliance with GB/T 37308-2019 standard:
- The production unit should strictly control the raw material pretreatment and delayed coking process.
- The inspection agency needs to determine key indicators such as true density and sulfur and nitrogen content according to the prescribed methods.
- Users should clarify the purpose of the product when purchasing and choose the appropriate type of needle coke.
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