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Method for evaluation of flotation technological performance in coal preparation plant
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Basic data
| Standard ID | GB/T 34164-2017 (GB/T34164-2017) |
| Description (Translated English) | Method for evaluation of flotation technological performance in coal preparation plant |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | D27 |
| Word Count Estimation | 3,367 |
| Date of Issue | 2017-09-07 |
| Date of Implementation | 2018-04-01 |
| 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 34164-2017: Method for evaluation of flotation technological performance in coal preparation plant
---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.
Method for evaluation of flotation technological performance in coal preparation plant
ICS 73.040
D27
National Standards of People's Republic of China
Evaluation of flotation process effectiveness in coal preparation plant
2017-09-07 Posted
2018-04-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
China National Standardization Administration released
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by China Coal Industry Association.
This standard by the National Coal Standardization Technical Committee (SAC/TC42) centralized.
This standard is drafted by. China Coal Science and Industry Group Tangshan Research Institute Co., Ltd.
Participated in the drafting of this standard. World (Tangshan) Mining Technology Co., Ltd., Taiyuan University of Technology.
The main drafters of this standard. Shih Huan, Shi Yingxiang, Liu Wanchao, Zhang Peng, Li Hongqi, Liu Chunyan, Wei Changjie, Yang Maoqing, Cheng Yu, Deng Mingrui,
Zhang Jian, Cheng Hongzhi, Dong Xian Shu, Gu Shaoxiong.
Evaluation of flotation process effectiveness in coal preparation plant
1 Scope
This standard specifies the flotation process reflects the effectiveness of flotation coal flotation efficiency and flotation improve the calculation of indicators.
This standard applies to less than 0.5mm particle size of bituminous coal and anthracite.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 30046.2 pulverized coal (mud) flotation test - Part 2. Sequential evaluation test method (GB/T 30046.2-2013,
ISO 8858-2.2004, MOD)
3 flotation process effect assessment
This standard flotation clean coal quantity efficiency, flotation perfect indicators to evaluate the effect of flotation process at a coal preparation plant.
3.1 flotation coal quantity efficiency is used to assess the effect of flotation process between different coal. Calculation of flotation coal quantity efficiency see formula (1), meter
The result is rounded to 2 decimal places.
ηif =
γj
γ'j
× 100 (1)
In the formula.
ηif --- flotation coal quantity efficiency,%;
γj --- actual flotation coal yield,%;
γ'j --- coal ash at the same time, the theoretical flotation yield of coal,%.
3.2 theoretical flotation coal yield according to GB/T 30046.2 drawn by the coal yield - ash curve to determine.
3.3 flotation perfect indicators used to assess the same coal in different process conditions, the degree of improvement. Calculation of flotation perfect indicators see
Equation (2), the calculation results rounded to two decimal places.
ηωf =
γj
100-Ay
Ay-Aj
Ay
× 100 (2)
In the formula.
ηωf --- flotation perfect index,%;
Ay --- calculated feed ash,%;
Aj --- flotation of coal ash,%.
3.4 When the flotation process coal flotation process using flotation of the filtrate back to the flotation process equipment, the coal slurry is not containing flotation flotation feed,
Flotation of coal for the filter and other equipment after dehydration products.
When using the filtrate does not return flotation equipment flow, the flotation of coal flotation machine foam products.
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