This standard specifies the evaluation index and calculation method of the process effect of coal crushing equipment. This standard is applicable to the evaluation of the process effect of various types of crushing equipment (except drum crusher) in coal preparation plants. MT/T 2-2005 Method for evaluating the process effect of crushing equipment in coal preparation plants MT/T2-2005 Standard download decompression password: www.bzxz.net

Preparation number: 16773—2005
Coal Industry Standard of the People's Republic of China
MT/T 2-2005
Recommended MT/221973
Method for evaluating the process effect of crushing equipment in coal preparation plantCoal size reduction machinesPerformancc cyaluation2005-09-23Published
National Development and Reform Commission
2006-02-01Implemented
MT/T2—2005
From the date of entry into force of this standard, MT/Z2-197S "Method for evaluating the process effect of crushing equipment in coal preparation plant" 3.MT/Z2—1979 is hereby promulgated! It was put into trial implementation on May 1, 1981, and has not been revised since then. This standard contains two contents: one is to revise its format and structure according to GA/T1.1-2000; the other is to add relevant implementation standards. Appendix A of this standard is a normative appendix. This standard is issued by the China Coal Industry Association. This standard is issued by the National Coal Standardization Technical Committee and the China Coal International Engineering Group Beijing Huaka Engineering Co., Ltd. The main drafters of this standard are Guan Ying and Ben Xiaoyang. 1 Specifications
Evaluation method of technological effect of coal crushing equipment This standard specifies the evaluation indicators and calculation methods of technological effect of coal crushing equipment. This standard is applicable to the evaluation of technological effect of various types of crushing equipment (except roller crushers) in coal preparation. 2 Reference standards
MT/T 2—2005
The clauses in the following documents become clauses of this standard through reference in this standard. For the cited documents with the specified date, all the subsequent amendments (excluding the contents of errata) shall not apply to this standard. However, the latest versions of these documents may be used by the research institutes that reach an agreement on the whole quality based on this standard. For the cited documents without the specified date, the latest versions shall apply to this standard: GR47 Preparation method of coal samplebZxz.net
BT277 Coal screening or testing method
Gn/T4a1 Collection method of production coal sample
3. Evaluation method
3.1 This standard adopts crushing efficiency as the main index and fine particle increment as the auxiliary index to comprehensively evaluate the process effect of crushing equipment. 3.2 The efficiency recovery formula (1) is used for calculation:
Wu:
Crushing efficiency, %:
F The content of particles larger than the required crushing size in the feed is %F
The content of particles smaller than the required crushing size in the feed is T-. The content of particles of the smallest size in the feed is % and the calculation result should be corrected to one decimal place. 3.3 Fine grade elimination is calculated according to formula (2):
A=H;-F:
Fine grade increment, ring;
The fine grade content of the second row of materials is %:
One material The content of no particle size in the material is calculated to two decimal places, and the total is rounded to one decimal place. The fine particle density range is as follows:
) The material size is greater than or equal to 50m, the short particle range is 13~Umm, =13mh) The medium and fine crushing of the material size is less than 501, and the fine particle size range is 0, mm, that is, 3.4. The material and discharge size group can be measured by G/T 4? Coal screening test method 2 is carried out: the initial evaluation meets the requirements: (1)
) The egg separation can be less than this, and the parts should include the corresponding sensitivity of the crushing machine holding material size and the fine particle size limit, or the above level is not valid with GBT477: then the screening level of the whole seat can meet the actual requirements of the particle return MT/T 22005
age is not less than.
Especially, the coal samples above 25m shall be selected and all grades of total sulfur (S.) volatile matter (6) shall be measured.
3.5 The sampling method of coal samples is shown in G3/T 481. The preparation method of coal samples is shown in GB 474. The preparation method of coal samples is shown in GB 474.
3.6 While conducting the test, the type, specification, use, crushing particle size, processing energy, etc. of the crushing equipment must be determined and recorded. The filling method of the main data is shown in Appendix A. In addition, according to the needs, the following items shall be determined and recorded: the single chemistry, hardness, brittleness, crushing strength, abrasiveness, grinding content, yellow ore content, residual moisture, and particle composition properties of the material.
b! Fatigue resistance structural characteristics
Material decision
Material balance
Crusher
(Normative attachment)
Crushing equipment process effect test report
Recycling capacity, t/h
Inspection upper limit
In the UI discharge, the amount of material greater than the required particle size. Actual
Material content, %
Content in the discharge,
MT/T2—2005
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