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Hammer crusher and Ball mill

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

Roller crusher can crush various carbon materials

The roller crusher is a crushing machine mainly used for crushing or fine crushing in a carbon plant, and can crush various carbonaceous raw materials.After the carbonaceous raw material is crushed, the raw materials produced by the graphite electrode need to be crushed, and the crushing of the raw material will affect the production of the graphite electrode.

Working part of the double-tooth roller crusher

The double-toothed roller crusher is mostly used for the pre-crushing of large raw materials. The main working part is a pair of rollers rotating in opposite directions, the two rollers rotate at the same speed, and the roller surface is composed of a toothed plate made of several pieces of manganese steel。

Material for hammer crusher

The hammer crusher is mainly used for medium or fine crushing. The hammer crusher also has a certain grinding effect. It is suitable for materials with high hardness and need to be broken into small particles (such as roasting), and can also be broken like high softening point. Brittle materials such as solid asphalt.

Advantages of reversible hammer crusher

The reversible hammer crusher rotor can be set to rotate clockwise or counterclockwise as needed. When the hammer head wears, it does not need to be replaced immediately. Just adjust the motor to rotate in the opposite direction.
With the development of electric steelmaking industry, more and more large-sized high-power electrodes are needed, so the demand for needle coke is increasing.

Impact crusher is similar to hammer crusher

The working principle of the impact crusher is similar to that of the hammer crusher, and it also utilizes the impact at high speed to break the material.

Ball mill features

The ball mill is the most common milling equipment and its structure is relatively simple. It is reliable in operation and easy to operate, but it is noisy during operation. The ball mill can pulverize materials of various hardnesses.

Ball mill model

There are many types of ball mills, and there are two types of wet ball mills and dry ball mills, and their structures are different.

Parameter of graphite electrode

Item Unit UHP RP
300-600mm 650-800mm 300-800mm
Electric resistivity Electrode μΩm 4.8-5.8 4.6-5.8 7.8-8.8
Nipple 3.8-4.5 3.8-4.5 5.0-6.5
Flexural strength Electrode Mpa 10.0-14.0 10.0-14.0 7.0-12.0
Nipple 20.0-26.0 22.0-26.0 15.0-20.0
Elastic modulus Electrode Gpa 9.0-13.0 10.0-14.0 7.1-9.3
Nipple 15.0-18.0 15.0-18.0 12.0-14.0
Bulk density Electrode ≥g/cm3 1.68-1.74 1.70-1.74 1.53-1.56
Nipple 1.77-1.82 1.78-1.84 1.70-1.74
CTE(100-600℃) Electrode x10-6/℃ 1.1-1.4 1.1-1.4 2.2-2.6
Nipple 0.9-1.2 0.9-1.2 2.0-2.5
Ash   0.3 0.3 0.5

Dry ball mill shape

The dry ball mill body is a circular cylinder rolled from a thick steel plate. The feeding mechanism and the discharging mechanism are installed at both ends of the cylinder. The inner wall of the cylinder is provided with a wear-resistant lining (such as manganese steel plate), and the special screw for the lining plate is used. The nut is fixed on the simplified body. In order to facilitate the replacement of the lining plate and the addition of the grinding body, the central part of the outer side of the cylinder body is provided with a manhole, which is usually covered with a cover plate, and the inside of the ball mill with a long cylinder body is divided into several grinding rooms by a sieve plate. Each mill room is loaded with steel balls of different proportions.