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YS/T 637-2022 English PDF (YST637-2022)

YS/T 637-2022 English PDF (YST637-2022)

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YS/T 637-2022: Lithium phosphate

This document specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, accompanying documents and order sheet content of lithium phosphate. This document applies to lithium phosphate prepared by various methods.
YS/T 637-2022
YS
NONFERROUS INDUSTRY STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
ICS 77.150.99
CCS H 64
Replacing YS/T 637-2007
Lithium phosphate
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ISSUED ON: SEPTEMBER 30, 2022
IMPLEMENTED ON: APRIL 01, 2023
Issued by: Ministry of Industry and Information Technology of the People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Product classification ... 5
5 Technical requirements ... 5
6 Test methods ... 7
7 Inspection rules ... 7
8 Marking, packaging, shipping, storage and accompanying documents ... 8 9 Order sheet content ... 10
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020 "Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents".
This document replaces YS/T 637-2007 "Lithium phosphate for production of colored phosphor powder". Compared with YS/T 637-2007, in addition to the structural adjustments and editorial modifications, the main technical changes in this document are as follows:
a) Change the scope of application (see Chapter 1 of this Edition; Chapter 1 of Edition 2007);
b) Replace some referenced documents (see Chapter 2 of this Edition; Chapter 2 of Edition 2007);
c) Change and add the designations of lithium phosphate (see Chapter 4 of this Edition; 3.1 of Edition 2007);
d) Add chemical composition indexes of Co, Mn, Al, Na, Si, Zn, , Cr, and Cd in lithium phosphate (see 5.1 of this Edition; 3.2 of Edition 2007);
e) Delete the requirements for granularity (see 3.3 of Edition 2007);
f) Add the requirements for product moisture content (see 5.2 of this Edition); g) Change the test method (see Chapter 6 of this Edition; Chapter 4 of Edition 2007); h) Change the inspection rules (see Chapter 7 of this Edition; Chapter 5 of Edition 2007);
i) Change the marking, packaging, transportation and storage (see Chapter 8 of this Edition; Chapter 6 of Edition 2007).
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority shall not be held responsible for identifying any or all such patent rights.
This document was proposed by and shall be under the jurisdiction of National Technical Committee on Nonferrous Metals of Standardization Administration of China (SAC/TC 243).
The drafting organizations of this document: Jiangxi Ganfeng Lithium Industry Co., Ltd., Xinjiang Nonferrous Metals Research Institute, Guangdong Bangpu Recycling Lithium phosphate
1 Scope
This document specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage, accompanying documents and order sheet content of lithium phosphate.
This document applies to lithium phosphate prepared by various methods. 2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 191, Packaging -- Pictorial marking for handling of goods
GB/T 6284, Chemical products for industrial use -- General method for
determination of water content -- The loss of mass on drying method
GB/T 6678, General principles for sampling chemical products
3 Terms and definitions
There are no terms or definitions to be defined in this document.
4 Product classification
Products are divided into four designations according to chemical composition: Li3PO4- 1, Li3PO4-2, Li3PO4-3 and Li3PO4-4.
5 Technical requirements
5.1 Chemical composition
The chemical composition of the product shall comply with the requirements in Table 1.
Table 1 -- Chemical composition
7.4 Sampling
7.4.1 Sampling shall comply with the provisions of GB/T 6678.
7.4.2 Use a small stainless steel sampling tube or a hard polyethylene sampler to sample the material from the 1/2 depth of the packaging bag from the mouth of each packaging bag. The three sampling points are evenly distributed.
7.4.3 The sampling volume shall not be less than 500 g. After the sample is mixed evenly, it is divided into the required amount using the quartering method in a dry environment.
7.5 Judgment of inspection results
7.5.1 If any of the product's chemical composition and moisture inspection results are unqualified, double sampling will be done in the batch of products and reinspection will be conducted on the unqualified items. If there is still one unqualified item, the batch of products will be deemed unqualified.
7.5.2 If the appearance quality inspection result of the product fails, the batch of products will be deemed to be unqualified.
8 Marking, packaging, shipping, storage and accompanying
documents
8.1 Marking
Product markings shall indicate:
a) Product name;
b) Designation;
c) Batch number;
d) Net weight;
e) Packaging date;
f) Supplier's name;
g) "Afraid of rain" mark in GB/T 191.
8.2 Packaging
8.2.1 The inner layer of the product is sealed and packaged in a double-layer polypropylene or polyethylene plastic bag. The net weight of each bag is 25 kg ?? 0.025 kg.
8.2.2 When the purchaser has special requirements for packaging, the supplier and purchaser can negotiate.
8.3 Transportation
Care shall be taken to prevent moisture during product transportation.
8.4 Storage
Products shall be stored in a dry place.
8.5 Accompanying documents
Each batch of products shall be accompanied by accompanying documents, which shall include, in addition to supplier information, product information, this document number, exit-factory date or packaging date, the followings:
a) Product quality guarantee; the content is as follows:
?? Main performance and technical parameters of the product;
?? Product characteristics (including manufacturing process and raw material characteristics);
?? Responsibility for product quality;
?? The quality certification obtained by the product and various analysis and inspection results printed by the supplier's technical supervision department. b) Product certificate; the content is as follows:
?? Inspection items and their results or inspection conclusions;
?? Batch or lot number;
?? Inspection date;
?? Signature or seal of the inspector.
c) Inspection reports during product quality control and finished product inspection reports.
d) Product instructions: correct handling, use, storage methods, etc.
e) Others.

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