YS/T 1241-2018 in English
VALIDLithium sulfate
- Issued on:2018-04-30
- Implemented on:2018-09-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$117.00
本标准规定了硫酸锂产品的要求、试验方法、检验规则及标志、包装、运输、贮存、质量证明书和订货单（或合同）内容。
本标准适用于以湿法制备磷酸铁锂过程中产生的固体副产品硫酸锂。
Introduction
Analysis of the core content of the standard
YS/T 1241-2018 standard has established strict technical specifications for lithium sulfate products:
| Technical indicators | Required values | Test methods |
|---|---|---|
| Li2SO4·H2O content | ≥97.0% | Calculation method of Li content |
| Sodium (Na) content | ≤0.03% | Methods recognized by both supply and demand sides |
| Lead (Pb) Content | ≤0.002% | Methods to be agreed upon by both the supplier and the buyer |
Key Points for Standard Implementation
Quality Inspection Specifications
The standard stipulates that the net weight of each batch of products must not exceed 10 tons, and sampling must be taken from 2/3 of the way into the packaging bag. If the chemical composition test fails, double sampling should be conducted for re-inspection. If the appearance quality fails, the entire batch will be deemed unqualified.
Packaging, Storage, and Transportation Requirements
Products must be double-packaged (inner plastic film lining + outer plastic woven bag) or plastic-laminated bags. The outer packaging must be labeled with: product name, standard number, main content, batch number, net weight, production date, place of origin, and rainproof mark. The shelf life is 1 year in a dry environment.
Background of Technological Evolution
This standard primarily regulates the lithium sulfate by-product produced during the wet process of preparing lithium iron phosphate. With the development of the lithium battery industry, a unified standard for lithium sulfate by-products was established for the first time in 2018, resolving the previous problem of uneven product quality. The standard pays special attention to the control of impurity elements such as sodium, chromium, and lead to ensure the safety of downstream applications.
Implementation Recommendations
- Manufacturers should establish a raw material traceability system to control the process parameters for lithium iron phosphate preparation
- Testing laboratories should be equipped with precision instruments such as ICP to ensure the accuracy of trace element detection
- Relative humidity should be maintained at ≤60%
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