GB/T 33689-2017 PDF EnglishUS$125.00 · In stock · Download in 9 seconds
GB/T 33689-2017: General Rules for Testing Methods of Coal Preparation Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 33689-2017: General Rules for Testing Methods of Coal Preparation---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT33689-2017GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 73.040 D 27 General Rules for Testing Methods of Coal Preparation Issued on: MAY 12, 2017 Implemented on: DECEMBER 1, 2017 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of PRC. 3. No action is required - Full-copy of this standard will be automatically & immediately delivered to your EMAIL address in 0~60 minutes. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 4 4 Coal Sample ... 8 5 Dense Preparation ... 8 6 Result Expression ... 9 7 Test Records and Test Reports ... 10ForewordThis Standard was drafted as per the rules specified in GB/T 1.1-2009. This Standard was proposed by China National Coal Association. This Standard shall be under the jurisdiction of National Technical Committee for Standardization of Coal (SAC/TC 42). Drafting organizations of this Standard. Tangshan Research Institute of China Coal Technology & Engineering Group, Xi’an Dingli Fuel Testing Co., Ltd., and Tangshan Branch of Tiandi Science & Technology Co., Ltd. Chief drafting staffs of this Standard. Cao Xuezhang, Zhou Xiaomei, Zhao Zhiying, and Yang Maoqing. General Rules for Testing Methods of Coal Preparation1 ScopeThis Standard specifies the relevant terms and definitions, symbols, test coal sample, dense preparation, result expression, test record, and test report of coal preparation. This Standard is applicable to various coal preparation test method standards, norms, reports, books, teaching materials and manuals.2 Normative ReferencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) are applicable to this document. GB/T 474 Method for the Preparation of Coal Sample GB/T 475 Method for Manual Sampling of Commercial Coal GB/T 483 General Rules for Analytical and Testing Methods of Coal GB/T 3715-2007 Terms Relating to Properties and Analysis of Coal GB/T 7186-2008 Terms Relating to Coal Preparation GB/T 8170 Rules of Rounding off for Numerical Values & Expression and Judgement of Limiting Values GB/T 19494.1 Mechanical Sampling of Coal – Part 1. Method for Sampling GB/T 19494.2 Mechanical Sampling of Coal – Part 2. Method for Sample Preparation3 Terms and DefinitionsThe following terms and definitions and those ones stipulated in GB/T 3715-2007 and GB/T 7186-2008 are applicable to this document. For ease of use, some terms and 3.8 Dense Liquid or solution with density greater than water, which is used for coal float-and-sink analysis. The dense can be divided into organic dense, zinc chloride dense and inorganic high-density dense. [GB/T 7186-2008, definition 5.4.1] 3.9 Float-and-sink analysis; float-and-sink test The coal samples are divided into different density grades with different dense. [GB/T 7186-2008, definition 3.2.2] 3.10 Test coal’s degradation in water The test adding water to the tumbling bucket containing coal and its associated minerals, overturning for different time to measure the degree of its re-crushing, which includes the test for degradation in water of coal in drum, and assessment of the liability to breakdown in water of materials associated with coal seams. 3.11 The ratio of degradation in water In the determination results of degradation in water, the ratio between the mass of 10µm fine clay and total mass of 0.5mm minus sieve. 3.12 Flotation test The test aims to determine the floatability and flotation process of coal dust (slurry). 3.13 Batch-flotation test Flotation test performed by the single-tank flotation machine. [GB/T 7186-2008, definition 5.6.40] 3.14 Timed-release analysis The unit flotation test with once coarse selection and multiple fine selection process. [GB/T 7186-2008, definition 5.6.41] 3.15 Natural falling test The discrete settling test against the coal slurry sample containing no flocculant or coagulant. 3.16 Flocculant performance test from the repeated determination in short term performed under the repeated conditions, i.e. in the same laboratory, by the same operator, using the same instrument, against the same specimen.4 Coal Sample4.1 Collection and preparation of coal sample Perform as per GB/T 474, GB/T 475, GB/T 19494.1 and GB/T 19494.2. 4.2 Storage of coal sample The water sample shall be packed in the sealed container; the sample for general test shall be dried to the air-dry state, then sealed and stored in the sample bag with waterproof function. 4.3 Analysis test sampling The coal sample shall be mixed fully before sampling, the multi-point sampling method shall be taken for the sampling process.5 Dense Preparation5.1 Commonly-used dense The commonly-used laboratory dense is divided into organic and inorganic dense; the inorganic dense is the high-density dense and zinc chloride solution; while the organic dense is preparation solution between carbon tetrachloride and benzene, and the preparation solution between carbon tetrachloride and methenyl bromide. 5.2 Dense preparation The inorganic high-density dense shall be prepared by dilution method; the diluted dense can be concentrated by evaporation method, so that improve the density. The preparation of zinc chloride organic dense can refer to Table 1. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 33689-2017 be delivered?Answer: The full copy PDF of English version of GB/T 33689-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 33689-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 33689-2017_English will be deemed to be sold to your employer/organization who actually paid 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+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 33689-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 33689-2017?A step-by-step guide to download PDF of GB/T 33689-2017_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 33689-2017". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
