Valid

NB/T 10745-2021General technical requirements of flotation reagents for coal preparation (English PDF)

选煤用浮选药剂通用技术条件

Preview PDF

This is a limited preview

Buy now to download the full PDF (15 pages)

Need quotation for your management?

Get a formal quotation for NB/T 10745-2021 in 30 minutes.

Issued by

NEA

Level / Type

Industry · Recommended

Issue date

November 16, 2021

Implementation date

February 16, 2022

Scope

NB/T 10745-2021 is the English-translated version of 选煤用浮选药剂通用技术条件.

NB/T 10745-2021 sets the general technical conditions for flotation reagents used in coal preparation, including collectors, frothers and combined collector-frother products.

Beyond general requirements it lists the quality indices and the methods for checking them: odour, appearance, stability, density, water content by Karl Fischer titration, mechanical impurities, freezing point, closed-cup flash point, kinematic viscosity, volatile organic compounds and benzene content.

Inspection rules distinguish factory and type inspection and define batches, sampling and the decision rule, and a final clause covers marking, packaging, transport and storage.

Reagent manufacturers, coal preparation plants and testing laboratories use it for production control, incoming inspection and storage. Handling safety of the same reagents is dealt with in NB/T 10744. Issued on 16 November 2021, it has applied since 16 February 2022.

Found what you need?

Document preview — NB/T 10745-2021

National Standard of the People's Republic of China

Classification: D 27

Issued by: National Energy Administration of the People's Republic of China

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Requirements
4.1 General requirements
4.2 Indicator Requirements
5 Test method
5.1 Smell
5.2 Appearance
5.3 Stability
5.4 Density
5.5 Water content
5.6 Mechanical impurities
5.7 Freezing point
5.8 Flash point (closed mouth)
5.9 Kinematic viscosity
5.10 Volatile Organic Compounds (VOCs)
5.11 Benzene content
6 Inspection rules
6.1 Factory inspection
6.2 Type inspection
6.3 Batch
6.4 Sampling
6.5 Decision Rule
7 Marking, packaging, transportation and storage
7.1 Flag
7.2 Packaging
7.3 Transport
7.4 Storage

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 of Standardization Documents" drafted.

1 Scope

This document specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of flotation reagents for coal preparation.

This document is applicable to the production, inspection, storage and transportation of flotation reagents for coal preparation.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies 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 Determination of Mechanical Impurities in Petroleum and Petroleum Products and Additives

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

GB/T 6680 General Rules for Sampling of Liquid Chemical Products

GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values

GB/T 26986 Determination of water content in crude oil by Karl Fischer potentiometric titration

HJ734 Determination of Volatile Organic Compounds in Waste 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.

3.1 Flotation reagent

Agents used to effect or facilitate the flotation process.

3.2 Frother

In the flotation process, it is used to control the size of the bubbles and maintain the stability of the foam.

3.3 Collector

The agent added to the slurry to improve the adhesion between solid particles and air bubbles.

3.4 Collector-frother

It has the properties of both collector and foaming agent, and can selectively act on the mineral surface to make it hydrophobic in the process of coal slime flotation.

It can also orientate adsorption and arrangement on the gas-liquid interface, reduce the gas-liquid surface tension, and promote the formation of a large number of moderately sized gas in the slurry.

A certain stability of the bubbles, to prevent the merger of the bubbles, to ensure that the mineralized bubbles float up to form a flotation agent that scrapes out the foam layer.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

HJ734 · SH/T 0713

Similar standards

NB/T 10744-2021|NB/T 10382-2019|GB/T 36167-2018|GB/T 34164-2017|GB/T 14261-2010|GB/T 14262-2010

How to Download NB/T 10745-2021

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.