Background
The coal mined by the Xinjiang A Mining Company contains 60% lumps larger than 50mm after screening. The company previously relied on manual sorting on a conveyor belt to remove gangue and low-quality coal, which was costly and inefficient. The company decided to introduce advanced, environmentally friendly, and energy-efficient dry sorting equipment to separate clean coal, coal with gangue, and gangue. They sent a 75kg coal sample to test its sorting performance using the DRX intelligent sorting equipment.
DRX equipment sorting test
Coal samples shipped: Shipped from Xinjiang on August 7, 2025
Sample arrival: Received Xinjiang Coal Samples on August 12, 2025
Sample sorting: On June 14, 2025, Mr. Liu conducted on-site testing using the DRX intelligent mineral sorting equipment. In 20 minutes, the samples were separated into three types: clean coal, gangue-bearing coal (medium coal), and gangue.
Sorted sample test: On August 15, 2025, Mr. Liu took the sorted samples to Xuzhou Datun Coal and Electricity Company for testing.
Test report: Received the test results report for the three samples sorted out on August 15, 2025
Product sorting: It was decided to conduct a two-stage sorting process based on the selected sorting parameters. The first stage will separate the clean coal and coal with gangue, excluding the gangue. The second stage will separate the clean coal and gangue-bearing coal.
Clean coal sorted by the equipment
Gangue coal sorted by the equipment
Gangue sorted by the equipment
Chemical analysis report of sorted clean coal
Chemical analysis report of sorted gangue-bearing coal
Chemical analysis report of sorted gangue
Coal samples from Xinjiang A Mining Company were sorted using DRX intelligent mineral sorting equipment, separating clean coal, gangue-bearing coal, and gangue. Analysis of the sorted samples revealed a calorific value of 7485 kcal for the clean coal, 5963.5 kcal for the gangue-bearing coal, and 4731.5 kcal for the gangue. The clean coal has a calorific value 2753.5 kcal higher than the gangue, 1521.5 kcal higher than the gangue-bearing coal, and 1232 kcal higher than the gangue. The DRX intelligent sorting equipment achieves excellent sorting results and high precision for clean coal, gangue-bearing coal, and gangue.