GB/T 32554-2016 English PDF

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GB/T 32554-2016: Fluorspar -- Experimental methods for checking the bias of sampling and sample preparation
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 32554-2016	299	Add to Cart	3 days	Fluorspar -- Experimental methods for checking the bias of sampling and sample preparation	Valid

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Basic data

Standard ID: GB/T 32554-2016 (GB/T32554-2016)
Description (Translated English): Fluorspar -- Experimental methods for checking the bias of sampling and sample preparation
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D52
Classification of International Standard: 73.080
Word Count Estimation: 15,116
Date of Issue: 2016-02-24
Date of Implementation: 2016-11-01
Regulation (derived from): National Standard Announcement No
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

GB/T 32554-2016: Fluorspar -- Experimental methods for checking the bias of sampling and sample preparation

---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.
Fluorspar - Experimental methods for checking the bias of sampling and sample preparation ICS 73.080 D52 National Standards of People's Republic of China Test Method for Checking Deviation of Fluorite Fluorspar-Experimentalmethods forcheckingthebiasof 2016-02-24 released 2016-11-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by China Iron and Steel Industry Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183). The drafting unit of this standard. Shougang Technology Research Institute, Metallurgical Industry Information Standards Institute. The main drafters of this standard. Zhang Lei, Wu Zhaohui, Yan Wei, Zhao Xu, Liu Zhenghua, Zhang Xijing, Lu Chunsheng. Test Method for Checking Deviation of Fluorite

1 Scope

This standard specifies the test method for fluorite calibration sampling deviations. This standard applies to the test method for checking the sampling deviation as specified in GB/T 22564-2008.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Fluorite sampling and sample preparation GB/T 22564-2008

3 General rules

3.1 In the test method given in this standard, the results of the method (ie method B) to be examined and the standard method (referring to method A) In contrast, from a technical and empirical point of view, the results of the standard method are not actually biased. 3.2 There is no statistically significant difference between the results obtained by method B and method A, and as long as the parties concerned agree on this issue, Method B can be used as a daily method. Note. This standard uses 5% significance level t test (unilateral) to assess the deviation. By determining the difference between the results of method A and method B, whether due to randomness Whether the error is caused or whether it is statistically different. 3.3 The number of delivery lots or batches shall be no less than 20 batches, and the number of tests to be tested depends on the standard deviation of the 20 test differences and the measured deviation δ For details, see the analysis of test data. The measured deviation δ should be agreed by the parties concerned, from the technical and economic point of view to consider the use of the test The various precision of the method, unless otherwise agreed. A half of the precision of Table 1 in GB/T 22564-2008 can be used as a reference value. 3.4 Calcium fluoride, silica, moisture, particle size distribution and other quality characteristics can be used as a deviation test.

4 Sampling and sample preparation

4.1 Sampling The standard method of checking the sampling deviation (method A) is the stop sampling method. The method of checking (method B) applies the same type of fluorite with Standard method for comparison. The test examples are as follows. Example 1. Sampling from the conveyor belt Method A. Take each sample at the specified location from the full width of the full-thickness fluorite stream on the stopped conveyor belt. The sampler width is greater than the firefly The maximum particle size of the stone is 3 times or greater than that specified in Table 4 of GB/T 22564-2008. Method B (Approved method). In accordance with GB/T 22564-2008 4.4, in the ore stream from each randomly selected point Take each sample. Example 2. Mechanical sampling Method A. Take the sample according to Method 1 of Example 1. Method B. Take a sample with a mechanical sampler on a conveyor belt moving around Method A. Example 3. Sampling from a truck ......

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