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GB/T 25952-2010 English PDF

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GB/T 25952-2010: Methods for sampling and sample preparation of flotation nickel concentrates in bulk
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GB/T 25952-2010English329 Add to Cart 3 days [Need to translate] Methods for sampling and sample preparation of flotation nickel concentrates in bulk Valid GB/T 25952-2010

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Basic data

Standard ID GB/T 25952-2010 (GB/T25952-2010)
Description (Translated English) Methods for sampling and sample preparation of flotation nickel concentrates in bulk
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard D42
Classification of International Standard 77.120.01
Word Count Estimation 14,184
Date of Issue 2010-12-23
Date of Implementation 2011-09-01
Quoted Standard GB/T 8170; GB/T 14260-2010
Regulation (derived from) National Standard Approval Announcement 2010 No.10 (Total No.165)
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the bulk flotation of nickel concentrate sampling, procedures and methods for sample preparation and moisture determination. This standard applies to the bulk chemical composition of nickel concentrate flotation, water and other physical items detected by sampling the specimen, sample preparation and determination of moisture content.

GB/T 25952-2010: Methods for sampling and sample preparation of flotation nickel concentrates in bulk


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for sampling and sample preperation of flotation nickel conentrates in bulk ICS 77.120.01 D42 National Standards of People's Republic of China Bulk flotation of nickel concentrate sampling and sample preparation method Issued on. 2010-12-23 2011-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by China Nonferrous Metals Industry Association. This standard Nonferrous Metals by the National Standardization Technical Committee. This standard by the Jinchuan Group Ltd, China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting. The standards by Nantong CIQ participate in the drafting. The main drafters of this standard. Yan Wenbin, Hanqing Dong, Zhang Zhi hair, Zhao Junfeng, Lin Hsiu-ying, Hufeng Ping, Wen Jie accounting, Zhang Wen, LIU Run Red, Hou Jin. Bulk flotation of nickel concentrate sampling and sample preparation method

1 Scope

This standard specifies the procedures and methods of bulk flotation of nickel concentrate sampling, sample preparation and determination of moisture. This standard applies to bulk flotation of nickel concentrate chemical composition, moisture and other physical items detected by sampling the sample, sample preparation and determination of moisture content.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 8170 repair value expressed about the rules and limit values \u200b\u200band judgment GB/T 14260-2010 heavy nonferrous metals flotation concentrates in bulk sampling and sample preparation General

3 Terms and Definitions

This standard adopts GB/T 14260 terminology and definitions.

4 Requirements

4.1 different test batches of samples, sample preparation and determination of the overall accuracy (βSPM) and sampling precision (βS) as shown in Table 1. Table 1 Minimum number of samples in different parts of the inspection lot shall be taken of nickel concentrate Test batch N/t Quality variation type small Medium Large σw < 0.3 0.3≤σw < 0.6 σw≥0.6 βSPM /% βS /% ≤60 6 18 28 0.300 0.287 > 60 to 240,123,656 0.193 0.173 > 240 to 600,205,890 0.159 0.134 NOTE. If the inspection lot quality fluctuation is too large, when less than the required accuracy, according to the formula n = 2σw β () S to calculate the number of increments. 4.2 Standard 5.5.1 sampling system is no system deviation method. 4.3 standard nickel content (mass fraction) as the quality characteristics of nickel concentrate. 4.4 according to the method specified in this standard sampling and sample preparation, for quality fluctuation test for checking the precision required. Consultation greater than 600t more than 4.5 consignment inspection lot. 4.6 In case of conditions, sampling methods can be used outside of this standard. Subject to sampling error checking test, no significant difference after confirmation, Before use. 4.7 composition sample of not less than 3 months (international trade for 6 months), for verification, contract or otherwise agreed shelf life. 4.8 Sampling and sample preparation used equipment, tools and sample containers must be filled kept clean, dry, and durable. Sheng sample container should be better seal, preventing

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