YS/T 582-2023Battery grade lithium carbonate (English PDF)

Foreword

This document was drafted in accordance with the provisions of GB/T 1.1-2020

"Directives for standardization - Part 1.Rules for the structure and drafting of

standardizing documents".

This document replaces YS/T 582-2013 "Battery grade lithium carbonate". Compared

with YS/T 582-2013, in addition to structural adjustments and editorial changes, this

document has the following major technical changes.

a) CHANGE the definition of magnetic impurity (see 3.1; 3.1 of the 2013 edition);

b) ADD the classification of battery-grade lithium carbonate (see Chapter 4);

c) CHANGE some product chemical composition indicators (see 5.1; 4.1 of the 2013

edition);

d) ADD the indicator of boron in the chemical composition of products (see 5.1);

e) CHANGE the requirements for magnetic impurity in products (see 5.2; 4.2 of the

2013 edition);

f) CHANGE the requirements for moisture content of products (see 5.3; 4.3 of the

2013 edition);

g) ADD the requirements for loss on ignition of products (see 5.4);

h) CHANGE the requirements for particle size D50 of products (see 5.5; 4.4 of the

2013 edition);

i) ADD the requirements for particle size D99 of products (see 5.5);

j) CHANGE the net weight requirement for each batch of products (see 7.2; 6.2 of

the 2013 edition);

k) ADD the requirements for loss on ignition in the inspection items and sampling

(see 7.3; 6.3 of the 2013 edition);

l) CHANGE the description of the sampler and the number of samples (see 7.3; 6.3

of the 2013 edition);

m) CHANGE the judgment of the inspection results (see 7.4; 6.4 of the 2013 edition);

n) CHANGE the packaging requirements (see 8.2.1; 7.2 of the 2013 edition);

o) ADD the method for determining the boron content of the product (see Appendix

A);

p) CHANGE the method for determining the content of magnetic impurity in

battery-grade lithium carbonate by inductively coupled plasma atomic emission

spectrometry (see Appendix B; Appendix A of the 2013 edition);

q) ADD the method for determining the loss on ignition of the product (see Appendix

C).

1 Scope

This document specifies the classification, technical requirements, test methods,

inspection rules, marking, packaging, transportation, storage, accompanying

documents, order forms of battery-grade lithium carbonate.

This document is applicable to battery-grade lithium carbonate, which is produced by

various methods.

2 Normative references

The contents of the following documents constitute essential clauses of this document

through normative references in the text. Among them, for dated references, only the

version corresponding to that date applies to this document; for undated references, the

latest version (including all amendments) applies to this document.

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 6678-2003 General principles for sampling chemical products

GB/T 11064 (all parts) Methods for chemical analysis of lithium carbonate, lithium

hydroxide monohydrate and lithium chloride

GB/T 19077 Particle size analysis - Laser diffraction methods

3 Terms and definitions

The following terms and definitions apply to this document.

4 Classification

The products are divided into three designations according to chemical composition.

Li2CO3-D1, Li2CO3-D2, Li2CO3-D3.

5 Technical requirements

6 Test methods

7 Inspection rules

8 Marking, packaging, transportation, storage, accompanying documents

9 Order form content

The purchaser may, according to its own needs, list the following content in the order

form for the products listed in this document.

a) Product name;

b) Designation;

c) Net weight and number of pieces;

d) This document number;

e) Others.

Appendix A

(Normative)

Determination of boron content in lithium carbonate -- Inductively coupled

plasma atomic emission spectrometry

A.1 Overview

This Appendix is applicable to the determination of boron content in lithium carbonate,

which has a determination limit of 0.000050% ~ 0.010% boron content.

A.2 Principle

The sample is dissolved in hydrochloric acid. The boron content is determined by the

standard working curve method on an inductively coupled plasma atomic emission

spectrometer.

A.3 Reagents or materials

Unless otherwise specified, only reagents confirmed to be of superior purity are used in

the analysis. Boron-containing vessels shall be avoided during the experiment.

A.3.1 Water, GB/T 6682, grade 2.

A.3.2 Hydrochloric acid (rho = 1.19 g/mL).

A.3.3 Hydrochloric acid (1 + 1).

A.6.1 Test material

Weigh the test material according to Table A.1, accurate to 0.0001 g.

A.6.2 Parallel test

Perform two tests in parallel.

A.6.3 Blank test

Perform a blank test with the test material.

A.6.4 Determination

Place the sample (A.6.1) in a 200 mL polytetrafluoroethylene beaker. Add a small

amount of water to moisten it. Slowly add 23 mL of hydrochloric acid (A.3.3).

A.6.5 Preparation of working curve solution

A.6.6 Determination

A.6.6.1 Place the standard working curve series solution (A.6.5) in an inductively

coupled plasma atomic emission spectrometer, to measure it according to the analytical

spectrum recommended by the equipment. Draw the working curve with the mass

concentration of the boron element standard solution as the abscissa and the emission

intensity as the ordinate.

A.6.6.2 When the linearity of the working curve is >= 0.999, measure the blank test

solution and the test solution; the computer automatically gives the mass concentration

of the boron element.

A.7 Test data processing

The content of boron is calculated by mass fraction according to formula (A.1).

A.8 Precision

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