Posted by Paul Moore September 6, 2022
Developing a greener mining industry has become a top priority in recent years around the world, including in China. Molybdenum miner Luanchuan Hengyu Mining Co Ltd (Hengyu Mining) was established in 2006 and currently extracts approximately 1.45 Mt of rock per year through open pit mining. It also produces sand and gravel aggregates from waste. Hengyu Mining’s molybdenum metal reserves are 76,300 tons. The ores are porphyry, the main metallic minerals are molybdenite and pyrite, and the non-metallics are feldspar and quartz.
Since its establishment in Luoyang, Henan Province, Hengyu Mining has adhered to the environmental protection principle of “clear water and green mountains are as valuable as gold and silver mountains”. In practice, this includes recognizing that environmentally friendly mining must include not only land reclamation and afforestation, but also comprehensive resource utilization, reduced energy use, and environmental protection.
Hengyu Mining is also actively exploring advanced technologies to develop mineral resources more efficiently, and seeking solutions to improve production processes. In 2021, after inspection and design by HPY Sorting Technology’s expert team, Hengyu Mining will add HPY Sorting Technology’s XRT-based intelligent ore sorting equipment to the pre-rejection process to achieve the original ore sorting method. changed. Based in Ganzhou, Jiangxi, HPY is one of China’s leading suppliers of ore sorting technology.
Molybdenum ores are X-rayed, imaged with machine vision, and judged by artificial intelligence to help identify what is considered usable ore and waste. Once the machine has identified usable ore and waste, they are sorted with high-pressure compressed air, sorting the ore and waste into two separate belts and transporting each sorted material to the next step in the beneficiation process. will be revealed.
Hengyu Mining invested approximately $1.45 million to pre-select molybdenum ore and eliminate waste, using HPY Sorting Technology’s The Circle series (model C1500) to produce four sensor-based built an intelligent ore sorting plant consisting of ore sorters of
“The original design capacity of our mill was 5,000 tons per day. The ore grade is relatively low, about 0.05% when entering the sorter.After being processed by HPY The Circle series, the enriched grade improves by an average of 0.03% to 0.08%.Feng, Production Engineering Supervisor of Hengyu Mining The recovery rate has also increased to 85%, he said.
HPY’s intelligent ore sorting technology enables Hengyu Mining to proactively eliminate waste rocks without using water or other methods. Using sensor-based ore sorters early in the beneficiation process reduces downstream water, power and material consumption while lowering production costs, reducing solid waste and improving economic efficiency. . In addition, waste rock can be used to manufacture sand and gravel aggregates. Hengyu Mining has dramatically improved mineral resource utilization and reduced greenhouse gas emissions through an intelligent ore sorting process. It is currently in the process of seeking certification as a “National Green Mine”.
Using HPY Sorting Technology’s intelligent ore sorting equipment yields an annual economic benefit of approximately $6.33 million. The production capacity has increased from 5,000 t/d to 8,000 t/d (consisting of 5,000 t of ore for ball milling and 3,000 t of waste rock, mainly used as aggregate for sand and gravel). increase). Four sets of The Circle Series Intelligent Sorters can produce up to 900,000 tons of waste rock per year. Early disposal of waste rock will produce more than 280 tons of molybdenum metal annually and save 18,000,000 kWh of electricity worth $2.1 million.
Circle Series HPY Sorting Technology is the world’s first ring-shaped structured intelligent ore sorter. Due to its unique circle structure, it features ultra-large processing capacity (up to 300th) and ultra-compact size.
According to HPY, using advanced intelligent XRT sorting technology and aerial imaging technology, the image quality is improved by 30% compared to the previous generation of ore sorters. AI computing power increased by 400% to process over 10,000 ore particles per second.
The separation method uses a high-speed multi-row air jet with a single nozzle diameter of 2mm. AI algorithms can intelligently manage the jet stream based on ore particle size, so even particles as small as 5 mm can be accurately hit. This machine also has the HPY cloud platform. An intelligent online cloud monitoring system allows operators to monitor the operation status in real time from anywhere. The circle series is easy to maintain due to its unique circle structure.