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GB/T 25950-2010 English PDF

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US$114.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 25950-2010: Aluminium ores -- Experimental determination of the heterogeneity of constitution
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 25950-2010	114	Add to Cart	3 days	Aluminium ores -- Experimental determination of the heterogeneity of constitution	Valid

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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: 6,648
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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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 25950-2010_English be delivered?

Answer: Upon your order, we will start to translate GB/T 25950-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 25950-2010_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 25950-2010_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.