NB/T 11107-2023Performance requirements of collecting agent for coal preparation (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1. Structure and Drafting Rules for Standardization Documents" drafting.

Please note that certain contents of this document refer to patents. The issuing agency of this document assumes no responsibility for identifying patents.

1 Scope

This document specifies the basic requirements, performance indicators, testing methods and judgment rules of collectors for coal preparation in coal mines.

This document applies to collectors for coal preparation in coal mines.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 261 Determination of flash point Pensky-Martin closed cup method

GB/T 265 Petroleum Products Kinematic Viscosity Determination Method and Dynamic Viscosity Calculation Method

GB/T 510 Determination of Freezing Point of Petroleum Products

GB/T 511 Petroleum and Petroleum Products and Additives Determination of Mechanical Impurities

GB/T 1884 Laboratory Determination of Density of Crude Oil and Liquid Petroleum Products (Densitometer Method)

GB/T 8170 Numerical rounding off rules and expression and determination of limit values

GB/T 26986 Determination of Water Content in Crude Oil Karl Fischer Potentiometric Titration

HJ734 Determination of volatile organic compounds in exhaust gas from stationary pollution sources Solid phase adsorption-thermal desorption/gas chromatography-mass spectrometry

SH/T 0713 Determination of Benzene and Toluene in Motor Gasoline and Aviation Gasoline (Gas Chromatography)

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Basic requirements

4.1 Collectors for coal preparation should be selected according to the coal quality characteristics and index requirements of the coal preparation plant.

4.2 Collectors for coal preparation should meet the relevant national and industry environmental protection requirements, and should not cause serious impacts on human health and the environment.

5 Performance indicators

Performance indicators include. odor, appearance, stability, density, water content, mechanical impurities, freezing point, flash point (closed mouth), kinematic viscosity, volatile organic organic matter (VOCs), benzene content.