SN/T 1797.2-2008Technical regulation on safety and sanitation for inspection of iron ore. Part 2: Total iron for quality evaluation (English PDF)

Foreword

SN/T 1797 "Safety of Health Laboratory technical specifications of iron ore" is divided into 12 parts.

--- Part 1. manual sampling method;

--- Part 2. Evaluation of total quality iron content;

--- Part 3. Quality Assessment silicon content;

--- Part 4. Quality Assessment of aluminum content;

--- Part 5. Quality Assessment of loss on ignition;

--- Part 6. Quality Evaluation of moisture content;

--- Part 7. Quality evaluation of particle size distribution;

--- Part 8. Evaluation of thermal cracking quality index;

--- Part 9. Quality evaluation of mechanical strength;

--- Part 10. Quality Assessment of the relative degree of reduction;

--- Part 11. Evaluation of the quality of pellets free expansion coefficient;

--- Part 12. Quality Assessment bulk density.

This section SN/T Section 21797 of.

This section proposed and managed by the National Certification and Accreditation Administration Committee.

This part mainly drafted by. Guangdong Entry-Exit Inspection and Quarantine, Shandong, Shenzhen CIQ, Tianjin Entry-Exit Inspection and Quarantine Bureau, Ningbo CIQ.

1 Scope

This section provides grading and export of iron ore quality assessment and determination of total iron content method.

This section applies to the import and export of natural iron ore, iron ore processing.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 6730.5 method of chemical analysis of iron titanium trichloride - Determination of total iron content potassium dichromate volumetric method GB/T 10322.1 iron ore sampling and sample preparation methods GB/T 20565 Iron ore and direct reduced iron term SN/T 1797.1 iron ore Health and Safety Inspection Technology Specification - Part 1. Sampling manual method SN/T 0832 import and export of iron ore, the measurement wavelength of silicon, calcium, manganese, aluminum, titanium, magnesium and phosphorus dispersive X-ray fluorescence spectrometry Determination of total tin chloride content of ISO 2597-1 iron ore after reduction by titration ISO 3082 iron ore sampling and sample preparation methods ISO 9516 iron ore, silicon, calcium, manganese, aluminum, titanium, magnesium, phosphorus, sulfur and potassium measurement wavelength dispersive X- ray fluorescence spectrometry

3 Terms and Definitions

Terms and definitions GB/T 20565 established applicable to this section.

4 Sampling and sample preparation

Used for experimental samples for analysis, sampling should be carried out according to GB/T 10322.1, ISO 3082, or SN/T 1797.1 requirements, and in accordance with GB/T 10322.1 or ISO 3082 method of preparing a sample size of less than 100µm in. If the ore containing compound or water-containing substances easily oxidized Volume, the size should be less than 160µm.

5 Measurement method

The total iron content using GB/T 6730.5, SN/T 0832, ISO 2597-1, ISO 9516 method of measurement.

6 Total iron content rating

The total iron content in iron ore grading according to Table 1.

Table 1 in total iron ore grading

Level range (TFe) /% A > 65.5 Two > 65.5 63 ~ Three 50 to 63 Four (lean ore)