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How to choose a shredder

Release time:2019-11-12 From: Zhengnai Industry in China

The main point of choosing a shredder

Choosing a good shredder can provide better graphite electrode raw materials and produce good quality graphite electrodes.The choice of crushing machinery should first be considered based on the strength and hardness of the material, the size of the block, the required crushing ratio and other factors.

Hard material selection crusher

For hard materials, crushing machinery with crushing, mashing and shearing should be used. For most of the ore crushed, use a gyratory crusher or a cone crusher.
 

Brittle material selection crusher

For the brittle material, a crushing machine having a crushing and crushing action, such as a roll crusher, a counter crusher, a hammer crusher, or the like can be used.
 

Phenomenon of improper selection of shredder

If the crushing machine is improperly selected, it will cause difficulty in crushing or excessive crushing.

Definition of multi-stage pulverization

Multi-stage pulverization: When using a crushing machine that cannot meet the crushing ratio of the process requirements, two or three crushing machines of different specifications or different types can be used in series.
 

Breaking series affects complexity

As the number of crushing stages increases, the system is relatively complex and requires increased equipment investment and operating costs.
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Commonly used crushers can be divided into 2 categories

There are many kinds of pulverizing machinery commonly used in the carbon product industry. From the degree of pulverization, it can be divided into two types: crushing machinery that pulverizes into small and medium granules and grinding machinery that pulverizes into powdery granules.
 

Advantages of the jaw crusher

The jaw crusher is a common crushing machine with a simple structure and reliable working performance.

Specifications of graphite electrode

Item Unit HP
300-800mm
Electric resistivity Electrode μΩm 5.8-6.6
Nipple 4.2-5.0
Flexural strength Electrode Mpa 10.0-13.0
Nipple 18.0-22.0
Elastic modulus Electrode Gpa 8.0-12.0
Nipple 14.0-16.0
Bulk density Electrode ≥g/cm3 1.62-1.66
Nipple 1.74-1.80
CTE(100-600℃) Electrode x10-6/℃ 1.6-1.9
Nipple 1.1-1.4
Ash   0.3

Jaw crusher can be divided into 3 kinds

According to the characteristics of the periodic oscillation of the moving jaw plate, it can be divided into three types: simple swing type, complex swing type and hybrid swing type.
 
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