GB/T 26008-2020Battery grade lithium hydroxide monohydrate (English PDF)

3.1 Magnetic impurity

A substance that can be directly or indirectly absorbed by a ferromagnet.

NOTE: It mainly refers to the magnetic substances in the transition elements, such as iron, chromium, nickel, zinc and their alloys. It refers to the combined amount of four elements of iron, chromium, nickel and zinc in this Standard.

4.1 Product classification

4.1.1 Battery grade lithium hydroxide monohydrate is divided into three designations according to chemical composition. LiOH·H2O-D1, LiOH·H2O-D2 and LiOH·H2O-D3.

4.1.2 Battery grade lithium hydroxide monohydrate is divided into crystal type and fine powder type according to appearance.

4.2 Chemical composition

The chemical composition of battery grade lithium hydroxide monohydrate shall conform to the provisions of Table 1.

4.3 Magnetic impurity

The magnetic impurity content in the product shall conform to the provisions of Table 2.

6.1 Inspection and acceptance

6.1.1 The product shall be inspected by the supplier to ensure that the product quality meets the requirements of this Standard and the order form (or contract); and fill in the quality certificate.

6.1.2 The purchaser shall inspect the received products in accordance with the provisions of this Standard. If the inspection results are inconsistent with the provisions of this Standard and the order form (or contract), they shall submit to the supplier in written form, which shall be resolved through consultation between the supplier and the purchaser. Objections pertaining to appearance quality shall be submitted within one month from the date of receipt of the product; objections pertaining to other properties shall be submitted within three months from the date of receipt of the product.

If arbitration is required, it shall be negotiated by both parties.

6.2 Batching

Products shall be submitted for acceptance in batches; and each batch of products shall consist of the same designation and the same mixture. The net weight of each batch of products shall not exceed 10t. When supplied in large-batch, the method of batching may be determined through consultation between the supplier and the purchaser.

6.3 Inspection items

Each batch of products shall be inspected for chemical composition, magnetic impurity, granularity, and appearance quality. The inspection items shall conform to the provisions of Table 3.

6.4 Sampling and sample preparation

6.4.1 Sampling method

The product sampling shall use a rigid polyvinyl chloride sampler; and the sampling tube is inserted into the 2/3 bag along the center of the bag. The taken sample is mixed well and then reduced to about 1000g by the quartering method.

6.4.2 Sampling quantity

It shall be performed according to the provisions of GB/T 6678; the sampling quantity shall conform to the provisions of Table 4.

6.5 Determination of inspection results

6.5.1 If the inspection results of chemical composition, magnetic impurity, and granularity of the product are unqualified, double the number of samples from this batch of products shall be taken to repeat the inspection for the unqualified items. If the repeated inspection results are all qualified, the entire batch of products shall be qualified. If there are still unqualified samples in the repeated inspection results, this batch of products is determined to be unqualified.

6.5.2 If the appearance quality of the product is unqualified, this batch of products is determined to be unqualified.

7.1 Marking

The product shall indicate.

a) Product name;

b) Batch number;

c) Net weight;

d) Designation;

e) Appearance;

f) Name of the supplier;

g) Number of this Standard;

h) Place of origin;

i) "Corrosive substance" mark in Table 2 of GB 190-2009;

j) "Fear of rain" mark in Table 1 of GB/T 191-2008;

k) Production license number for Industrial product.

7.2 Packaging

7.2.1 Crystal type product of battery grade lithium hydroxide monohydrate is packed by bags internally lined polyethylene (PE); externally cover the polypropylene (PP) bags or two to three-layer paper bags. The internal bag is tied or heat-sealed; and the sealing seam of the external bag is firm.

7.2.2 Fine powder type product of battery grade lithium hydroxide monohydrate is lined with aluminum-plastic composite bags and filled with nitrogen for protection; and is packaged with plastic film bags externally. The internal bag is heat-sealed, and the sealing seam of external bag is firm.

7.2.3 If there are other requirements for the packaging method of the product, the supplier and the purchaser shall negotiate. The net weight of each bag is executed according to customer requirements.

7.3 Transportation

Avoid contact with acid when transporting the product; and prevent the packaging bag from being damaged when handling; and pay attention to moisture proof.

7.4 Storage

The product shall be stored in a dry, acid-free environment. The storage period shall not exceed half a year.