Standard No.:	YS/T 231-2015
English Name:	Tungsten concentrate
Chinese Name:	钨精矿
Chinese Classification:	D43    Rare metal ore
Professional Classification:	YS    Professional Standard - Non-ferrous Metal
ICS Classification:	73.060.99 73.060.99    Other metalliferous minerals 73.060.99
Source Content Issued by:	MIIT
Issued on:	2015-04-30
Implemented on:	2015-10-1
Status:	valid
Superseding:	YS/T 231-2007 Tungsten concentrate
Target Language:	English
File Format:	PDF
Word Count:	3500 words
Translation Price(USD):	60.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the requirements, test methods, inspection rules and marking, packaging, transport, storage as well as quality certificate and order (or contract) content of tungsten concentrate. This standard is applicable to tungsten concentrate products obtained through mineral processing, which are used for the production of ammonium paratungstate, tungstic acid, ammonium metatungstate, tungsten oxide, etc. 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. GB/T 1480 Metallic Powders - Determination of Particle Size by Dry Sieving GB/T 4414 Methods of Sampling and Sample Preparation of Tungsten Concentrates in Bags GB/T 6150 (All Parts) Methods for Chemical Analysis of Tungsten Concentrates GB/T 26019 Methods for Chemical Analysis of High Impurity Tungsten Mineral - Determination of Tungsten Trioxide Content - Twice Separation and Igniting Gravimetric Method 3 Requirements

Foreword i 1 Scope 2 Normative References 3 Requirements 4 Test Methods 5 Inspection Rules 6 Marking, Packaging, Transport, Storage and Quality Certificate 7 Order (or Contract) Content