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GB/T 33688-2017: Evaluation method for performance of coal preparation magnetic separator
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 33688-2017 | English | 139 |
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Evaluation method for performance of coal preparation magnetic separator
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GB/T 33688-2017
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Basic data | Standard ID | GB/T 33688-2017 (GB/T33688-2017) | | Description (Translated English) | Evaluation method for performance of coal preparation magnetic separator | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D27 | | Classification of International Standard | 73.040 | | Word Count Estimation | 7,757 | | Date of Issue | 2017-05-12 | | Date of Implementation | 2017-12-01 | | Quoted Standard | GB/T 7186; GB/T 18711; MT/T 808 | | 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 evaluation index and calculation method of the process effect of the coal preparation magnetic separation equipment. This standard is applicable to the evaluation of the process effect of coal preparation magnetic separation equipment. | GB/T 33688-2017: Evaluation method for performance of coal preparation magnetic separator---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.
Evaluation method for performance of coal preparation magnetic separator
ICS 73.040
D27
National Standards of People's Republic of China
Method of Evaluating Process Effect of Coal Preparation Equipment
2017-05-12 released
2017-12-01 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 Coal Industry Association.
This standard is under the jurisdiction of the National Coal Standardization Technical Committee (SCA/TC42).
The drafting of this standard. Beijing Guohua Technology Group Co., Ltd., China University of Mining and Technology, China Coal Industry Group Tangshan Research Institute Co., Ltd.,
Tangshan Guohua Technology International Engineering Co., Ltd.
The main drafters of this standard. Zhao Shuyan, Han Wansong, Wu Dawei, Kuang Yali, Bai Jingqi, Ren Liqin, Yu Chaofu.
Method of Evaluating Process Effect of Coal Preparation Equipment
1 Scope
This standard specifies the evaluation index and calculation method of the process effect of coal preparation magnetic separation equipment.
This standard is applicable to the evaluation of the process effect of coal preparation magnetic separation equipment.
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.
GB/T 7186 Coal Preparation Terminology
Test method for magnetite powder for coal preparation GB/T 18711
Technical inspection of MT/T 808 coal preparation plant
3 terms and definitions
GB/T 7186 Definitions and the following terms and definitions apply to this document.
3.1
Magnetic material recovery rate magneticmaterialrecoveryratio
The magnetic material recovered in the concentrate of the magnetic separation device occupies the mass fraction (%) of the magnetic material in the feed.
3.2
Non-magnetic material removal rate non-magneticmaterialremovalratio
The nonmagnetic material discharged from the tailings of the magnetic separation equipment occupies the mass fraction (%) of the nonmagnetic material in the feed.
4 Assessment method
4.1 This standard uses the magnetic recovery rate as the main indicator of the effect of magnetic separation equipment, non-magnetic removal rate as a secondary
index.
4.2 magnetic material recovery by type (1).
ε =
γβMβ
100Mα ×
100 =
Mβ (Mα-Mθ)
Mα (Mβ-Mθ)
× 100 (1)
Where.
ε - magnetic material recovery rate,%;
γβ --- concentrate yield,%, γβ =
Mα-Mθ
Mβ-Mθ
X 100;
Mα - magnetic content in the magnetic material, expressed as mass fraction of the mass of the magnetically selected material,%;
Mβ - magnetic content in magnetic concentrate, expressed as mass fraction of magnetic concentrate concentrate,%;
Mθ - magnetic content in magnetic separation tailings, expressed as mass fraction of magnetic separation tailings.
4.3 non-magnetic removal rate according to formula (2).
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