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YS/T 975-2014 English PDF

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YS/T 975-2014: Technology specification for homogenization of bauxite ores
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Basic data

Standard ID YS/T 975-2014 (YS/T975-2014)
Description (Translated English) Technology specification for homogenization of bauxite ores
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H61
Classification of International Standard 77.120.20
Word Count Estimation 12,194
Date of Issue 10/14/2014
Date of Implementation 4/1/2015
Quoted Standard GB/T 7721-2007; GB/T 10595-2009; GB/T 25945-2010; HJ 473-2009
Regulation (derived from) People's Republic of China Ministry of Industry and Information Technology Notice 2014 No. 63; Industry Standard Filing Notice 2014 No. 12 (Overall No. 180)
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This Standard specifies the technical requirements of bauxite ore, ore homogenization operation, automatic sampling methods. This Standard applies to bauxite alumina production in uniform implementation and acceptance process.

YS/T 975-2014: Technology specification for homogenization of bauxite ores

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Technology specification for homogenization of bauxite ores ICS 77.120.20 H61 People's Republic of China Nonferrous Metals Industry Standard Bauxite uniform technical specifications Issued on. 2014-10-14 2015-04-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized. This standard is drafted by. Aluminum Corporation of China Guangxi Branch. Participated in the drafting of this standard. Aluminum Corporation of China Shandong Branch, Guangxi Huayin Aluminum Co., Ltd. The main drafters of this standard. Wuhai Wen, Shen Wei, Ni Liangyu, Tanqiu Qi, Liu Yonghong, Wen Jinde, Hwang Hui Jin, Yang Fan. Bauxite uniform technical specifications

1 Scope

This standard specifies the technical requirements of bauxite ore, ore homogenization operation, automatic sampling methods. This standard applies to the production of bauxite, alumina uniform implementation and acceptance process.

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 7721-2007 Continuous totalizing automatic weighing instruments (belt scale) GB/T 10595-2009 Belt GB/T 25945-2010 bauxite sampling procedures HJ473-2009 Cleaner production standard aluminum industry

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Bauxite homogenization bauxitecompositionaverage By using a certain process measures, to achieve lower grade bauxite into the mill volatility, reduced its standard deviation, so that the ground bauxite Ore grade uniform process. 3.2 Mix stacker blendingstacking Bauxite in uniform mixed with yard stacker certain way to mine ore will be stacked into a certain cross-sectional shape, height and length The stacking process, different grade bauxite layered fabric required to achieve the same physical properties, taste uniform stacking method. 3.3 Chevron stacking method chevronstockpilingmethod Stacker point in rectangular pile longitudinal center line, blending stacker along the longitudinal direction between the ends of two fixed speed and from unloading was completed The method of stacking materials, blending stacker consecutive runs back and forth between the two ends, so that the cross-section of an isosceles triangle windrow regularly with amplification. 3.4 Segregation effect isolationeffect There are differences in the particle size of the material, during stacking, the material will be top of the pile along the natural angle of repose from rolled material, larger particles always roll To feed the bottom of the stack on both sides, and the fines were kept in the upper half of the phenomenon. 3.5 End surface reclaiming method transversefeedingmethod Set on reclaiming agencies across the bridge stockyard operation, carried out with the bucket wheel reclaimer operation mechanism, loose material with a rake reclaimer with carts Open to the end face of the stockpile and insert stockpile a certain depth, after starting with bucket wheel bucket wheel trolley to move back and forth to do, so that loose material rake rake the material heap portion thereof Material also do move back and forth to form a material portion of the heap material uniformly whereabouts agencies bucket wheel reclaimer along the bottom of the rotation, so the cycle to stockpile layers

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