YS/T 951-2014Laterite nickel ores - Determination of moisture content of a consignment (English PDF)

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard shall be under the jurisdiction of National Technical Committee

on Non-ferrous Metals of Standardization Administration of China (SAC/TC243).

Main drafting organization of this Standard. Bayuquan Entry-Exit Inspection and

Quarantine Bureau of the People's Republic of China, China Inspection and

Certification Group Liaoning Co., Ltd., China Nonferrous Metals Industry

Standard Metrology and Quality Research Institute.

The drafting organization of this Standard. Shenyang Entry-Exit Inspection and

Quarantine Bureau of the People's Republic of China, Ningbo Entry-Exit

Inspection and Quarantine Bureau of the People's Republic of China, Tianjin

Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China,

Nantong Entry-Exit Inspection and Quarantine Bureau of the People's Republic

of China, Changshu Entry-Exit Inspection and Quarantine Bureau of the

People's Republic of China.

Main drafters of this Standard. Jiang Xiaoguang, Song Chenggang, Zhao

Junfeng, Chu Ning, Jiang Li, Li Weigang, Zhu Xiaoyan, Guo Chengwei, Pan

Hongwei, Zhang Xiaodong, Xu Yuyu, Cao Guozhou, Zhang Yanfu, Wang

Yanjun, Chen Yu.

Laterite nickel ores - Determination of moisture

content of a consignment

1 Scope

This Standard specifies the determination method of moisture content of a

consignment of laterite nickel ores.

This Standard is applicable to the determination of moisture content of a

consignment of laterite nickel ores.

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.

YS/T 950, Methods for sampling and sample preparation of laterite nickel

ores in bulk

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

4 Method summary

In 105°C±5°C air flow, dry the test portion to constant weight. By determining

the mass loss of test portion, calculate its moisture content.

5 Instruments and equipment

6 Sample

Use the moisture sample that is taken according to the provisions of YS/T 950

and the prepared granularity is not greater than 10.0mm.

7 Determination steps

8 Result calculation and expression

9 Test report

The test report shall at least contain the following information.

Annex A

(normative)

Determination of moisture content of over-wet or sticky laterite nickel

ore consignment

A.1 When the moisture sample is too wet or sticky to sieve, break and divide, it

shall pre-dry the moisture sample till it is easy to prepare.

NOTE. It shall carefully distribute the pre-dried test portion, weigh the initial mass of test

portion and the mass of pre-dried test portion, so as to ensure the determination precision

of pre-dried moisture content.

A.2 Weigh the initial mass of test portion.

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