Last time we mentioned that hard rock processing has always been a headache for customers. Mecru has been deeply involved in the field of crushing and screening for many years. The HPG multi-cylinder cone crusher designed and produced specifically for hard rock crushing integrates mechanical, hydraulic, electrical, automation, etc. The technology is integrated, and it has a number of advantages that traditional crushers can't match. It has been able to solve the problems of large equipment wear and equipment maintenance difficulties.
Generally speaking: Rocks with uniaxial saturated compressive strength greater than 60 MPa are called "hard rocks", those with 30-60 MPa are called "hard rocks", and those with less than 30 MPa are called "soft rocks". Hard rock crushing deals with the crushing of hard rock with uniaxial saturated compressive strength greater than 30 MPa. This type of hard rock is generally crushed before subsequent use.
General materials can be divided into three major types of process engineering according to the required products: coarse crushing + medium crushing, coarse crushing + medium crushing + fine crushing or coarse crushing + medium crushing + fine crushing + shaping. Shaping is generally to make the resulting product better in grain shape.
The crushed products commonly used throughout the crushing process are as follows:
The jaw crusher is used in the first crushing process of the crushing line. It can crush large particles with a compressive strength of no more than 320MPa to a size of 100mm~300mm.
The impact crusher generally can process ores or rocks with a compressive strength of up to 350MPa under 500mm, and the crushed materials are cubic particles. The impact crusher is generally used in the second crushing process of the crushing line, and can also be used as the first crushing process for materials with smaller feed.
The cone crusher uses the principle of laminated crushing to form a protective layer of the material layer. It has the characteristics of reliable structure, high crushing efficiency, convenient adjustment, and economic use. The feed size is 13~369mm. Cone crushing is the same as impact crushing. It is often used in the second crushing process of the crushing line. It can also be used as the first crushing process for materials with smaller feed. However, the feed particle size of cone crusher is generally smaller than that of counter-attack crushing.
The sand making machine is suitable for the crushing and shaping of soft, medium hard and extremely hard materials. It is generally used as the last process of the crushing sand production line, and the feed size is 35-60mm.
In addition to the main crushing equipment, some auxiliary equipment such as vibrating screens, feeders and conveyors are needed to complete the configuration and work of this production line.
Production line configuration
Large hard rock materials pass through the silo to the vibrating feeder for uniform feeding, and then enter the jaw crusher for the first crushing. After the coarsely crushed materials are screened by the vibrating screen as required, they are transported to the cone by the belt conveyor. The crusher performs the second medium and fine crushing. After the medium and fine crushing, the circular vibrating screen is used for screening, and the larger particles are returned to the cone crusher to be crushed again. At this time, the required sand and gravel aggregates can be obtained. If sand making and shaping are required, the materials that meet the requirements are fed into the sand making machine for further crushing and shaping. If the materials need to be cleaned, a sand washing machine can be added for cleaning. Finally, the materials that meet the requirements are classified and packaged according to different particle size ranges.
The equipment configuration of the crushing production line is mainly determined according to the user's stone specifications and output and the use of the stone. The process is configured according to the production site. There are different types of crushing equipment, and different models correspond to different production capacity, feed particle size and discharge particle size. Therefore, the crushing equipment corresponding to the production capacity should be selected according to the required stone specifications, output and stone products to obtain the most reasonable and economical production line.
Mecru Heavy Industry has a professional technical team of experts. After on-site inspection, according to customer needs, we will create exclusive high-quality crushing and sand making production lines for customers, and serve customers wholeheartedly to create the most reasonable and economical production line for customers.
