Overview
LM-Y series vertical pre-grinding mill is an advanced grinding equipment based on the technology of LM series vertical mill, extensively absorbing advanced technologies at home and abroad, and combined with the production processes of the cement industry, non-metallic minerals and other fields.
LM-Y series vertical pre-grinding mill is widely used in industries such as cement, electric power, metallurgy, chemical industry, non-metallic minerals, industrial milling stations, etc., such as pre-grinding of cement clinker, ceramic raw materials and other non-metallic mineral coarse powder preparation, sand making, etc.
Features
1. Wide Range of Applications
It integrates sand making and grinding, which can be used for making sand and can also be used as grinding equipment.
2. Low Operating Cost
The core components are made of hard-wearing material to improve its performance and save cost.
3. High Quality of Finished Products
For making powder, the content of coarse and fine powder can be controlled and the quality is good. For making sand, the particle size of the sand is well graded and the particle shape is good.
4. Easy Operation and Maintenance
It adopts hydraulic adjustment system and is suitable for materials of various strengths and hardness. The grinding roller can be flipped outside the machine, making it easy and quick to replace the roller sleeve and liner.
Working Principle
The main motor drives the grinding disc to rotate through the reducer, and the material falls from the feeding port to the center of the grinding disc. Under the action of centrifugal force, the material moves uniformly from the center of the grinding disc to the edge and passes through the crushing roller area on the grinding disc, and is crushed by the grinding roller. The bulk material is directly crushed, and the fine-grained material is squeezed to form a material bed for intergranular crushing. The crushed material continues to move towards the edge of the grinding disc until it is thrown out of the grinding disc by the centrifugal force of the grinding disc, falls to the lower chamber of the mill, and is scraped into the discharge port by the scraper installed at the bottom of the grinding disc and then outside of the mill. The material is sorted in the external sorting or separation equipment, and the bulk or large particle material that exceeds the particle size of the finished product is recirculated into the mill for re-grinding until it reaches the appropriate particle size.
