The Semi-autogenous grinding process is a form of autogenous grinding process. The media consists of two parts: ore and grinding balls. The mineral be ground by Impact and squeezing among grinding balls, ore and liners. The size of feeding ore is around 200-350mm. after grinding the discharged ore size can reach several millimeters or less. The crushing ratio is large, which could significantly shorten the process,and has great advantages in saving space, capital investment, maintenance and other aspects.At present, the mining SAG towards the direction of large-scale, and semi-autogenous grinding machines with a diameter of up to 12.2m have appeared, which greatly improves the processing capacity of ore.
The ore in the SAG mill is mainly crushed by impact force, abrasive force and squeezing force between ore particles and grinding balls,through the continuous rotation of the mill, the large ore will be rotated into inner layer (near the center of the mill), and the smaller particles will be the outer layer. Most of the grinding balls for SAG mill have a diameter of 120-150mm, and the larger diameter have a larger gravitational potential energy to impact and grind.Based on the operational principle of SAG mill, it require the grinding ball must have excellent impact resistance and wear resistance.Good toughness could greatly enhance the grinding effect avoiding breakage; low wear rate could reduces the amount of grinding balls, increases production efficiency and lowers costs.
Goldpro committed in raw material formula,product processing and heat treatment of grinding balls, with self-developed advanced full automatic production lines. The products have four advantages:strong stability, strong toughness, strong applicability and low wear rate. In the process of application worldwide, Because of Goldpro’s products have obviously improved production capacity and reduced energy consumption and wear rate ,we have wined domestic and foreign customers' approval and high praise!
Strictly implement the ISO9001:2008 system, and established a sound product management and control system, product quality testing system and product trace system.
With international authoritative quality testing equipment, the testing specifications are qualified with the CNAS (China National Accreditation Service for Conformity Assessment) certification system;
The testing standards are fully calibrated with SGS (Universal Standards), Silver Lake (US Silver Lake), and Ude Santiago Chile (University of Santiago, Chile) laboratories.
Three "entire" concept
Three“ entire” concept includes:
Entire quality management, entire process quality management and entire participation in quality management.
Entire quality management:
Quality management is embodied in all aspects. Quality management not only includes product quality, but also needs to consider factors such as cost, delivery time and service. This is the significant entire quality management.
Entire process quality management:
Without a process, there is no result. Entire process quality management requires us to focus on every aspect of the value chain to ensure the quality results.
Entire participation in quality management:
Quality management is everyone's responsibility. Everyone must pay attention to product quality, find problems from their own work, and improve them, to take responsible for the work quality.
Four" everything" concept
The four "everything" quality concept includes:everything for customers, everything based on prevention, Everything speaks with data, everything works with PDCA cycle.
everything for customers. We must pay more attention to customers’ requirements and standards and establish the concept of customer first;
Everything is based on prevention. We are required to establish a concept of prevention-oriented, prevent problems before they occur, and eliminate the problem in its infancy;
Everything speaks with data. We should count and analyze data to trace the roots to find the essence of the problem;
Everything works with PDCA cycle. We should keep improving ourselves and use system thinking to achieve continuous improvement.