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Aluminium ores -- Experimental determination of the heterogeneity of constitution
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GB/T 25950-2010
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Basic data
| Standard ID | GB/T 25950-2010 (GB/T25950-2010) |
| Description (Translated English) | Aluminium ores -- Experimental determination of the heterogeneity of constitution |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | H30 |
| Classification of International Standard | 73.060.40 |
| Word Count Estimation | 6,668 |
| Date of Issue | 2010-12-23 |
| Date of Implementation | 2011-09-01 |
| Quoted Standard | GB/T 25945-2010; GB/T 25949-2010 |
| Adopted Standard | ISO 6138-1991, IDT |
| 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 determination of bauxite (required to determine the minimum sample mass) test method quality characteristics bias. This standard applies to the determination of the quality characteristics of bauxite deviation. |
GB/T 25950-2010: Aluminium ores -- Experimental determination of the heterogeneity of constitution
---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.
Aluminium ores. Experimental determination of the heterogeneity of constitution
ICS 73.060.40
H30
National Standards of People's Republic of China
Bauxite
Component unevenness experimental determination
Aluminiumores-
(ISO 6138.1991, IDT)
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
This standard uses the translation method identical with ISO 6138.1991 "bauxite component unevenness determined experimentally."
This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.
This standard is drafted by. Aluminum Corporation of China Zhengzhou Research Institute, China Nonferrous Metals Industry Quality Standards and Metrology
The amount of the Institute.
The main drafters of this standard. Shi Lei, Guo Yongheng, Xue Ning, Ma Wenmin.
Bauxite
Component unevenness experimental determination
1 Scope
This standard specifies the determination of bauxite (required to determine the minimum sample weight) Test Method for quality characteristics variation.
This standard applies to the determination of bauxite quality characteristics variation.
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 25945-2010 bauxite sampling procedures (ISO 8685.1992, IDT)
GB/T 25949-2010 bauxite sample preparation (ISO 6140.1991, IDT)
3 Terms and Definitions
GB/T 25945-2010/ISO 8685.1992 and the following terms and definitions apply to this standard.
3.1
Composition inhomogeneity heterogeneityofconstitution
Quality characteristics variation between test ore particles.
4 estimate component inhomogeneity
4.1 General
Bauxite uniform particle composition may be the same quality characteristics or consists of particles of different ingredients mixed composition. This will produce a
Minute unevenness. Composition inhomogeneity can be quantified as the coefficient of variation between each particle quality characteristics.
Generally, when the larger particles, the components will be very large unevenness component when the component content between the particles have a large deviation, caused by uneven
Uniformity will be very large. In order to quantitatively estimate the steps specified in this standard requires testing on representative samples of the same batch of ore.
4.2 Coefficient of variation between the particles estimate
Because the five kinds of each particle size range directly affect the quality of the sample (by weight), and therefore, should be 5 kinds of ore particle size ranges
Line composition uniformity test. Determination of the specific steps are as follows.
a) with 10 standard sieve composition of sieve-by descending a sieve column. Han mesh size should be between the maximum and minimum mesh size
Cover 95% of the sample particle size.
b) samples were prepared by standard 10 sieve. Rounding the finest sieve material.
c) each weighing quality 10 size fraction sample (by weight).
d) mixing a sample size similar level to get as far as possible, such as quality (by weight) of the sample group 5.
e) the five groups in a sample of each group sample into approximately equal mass (weight) (see Table 1) in 10 equal parts.
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