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Hammer crusher structure, installation and maintenance

1. Hammer crusher introduction

The hammer crusher is a machine that crushes materials in the form of impact and is divided into two forms: single rotor and double rotor. The single rotor is further divided into reversible and irreversible types. At present, single rotor hammer crushers and ring hammer crushers are widely used.

Hammer crushers are mainly used for various brittle materials with compressive strength not exceeding 100 MPa and humidity not greater than 10%-15%. Because of its particularly simple and compact structure and high crushing ratio under impact, this type of crusher is widely used in coal mines, coal beneficiation plants and industrial sectors such as power plants, cement, metallurgy, refractory materials and quarrying. In coal processing plants, it is mainly used for crushing fine coal or in situations where the lump coal content in the product is not high. Read more

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Hammer crusher hammerhead wearing standards

1. Terms and Definitions

1.1 Standard working conditions of testing

Crushing material stack density of 1.6t/m3, humidity no more than 8%, silica content no more than 2%, compressive strength of 120 MPa ~ 140MPa, limestone without clay.

1.2 Hammerhead wearing rate

The metal wear of the hammer head of a hammer crusher is expressed in g/t for processing each 1 ton material under the specified standard working conditions and crushing ratio.

1.3 Hammerhead wearing grade

The hammerhead wearing grade is a classification method to indicate the hammerhead metal wearing conditions of a hammer crusher. According to this standard, the hammerhead wear is determined and divided into three grades, 1, 2 and 3. Grade 1 indicates the smallest amount of wear, while grade 3 indicates the largest amount of wear.

1.4 Rated grade of hammerhead wearing

When the hammer crusher leaves the factory, the hammerhead wear grade is specified by the hammer crusher manufacturer according to this standard.

1.5 Using rate of material in hammerhead

Under the specified standard working conditions and a certain crushing ratio, the average ratio of the wearable hammerhead material of a hammer crusher.

1.6 Grade of using rate of material in hammerhead

The hammerhead material utilization grade is a classification method to indicate the utilization of hammerhead material of a hammer crusher. According to this standard, hammerhead material utilization is divided into three grades: 1, 2 and 3. Grade 1 indicates the highest utilization rate, while grade 3 indicates the lowest utilization rate.
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