Background
High standards are required for sorting clean coal, gangue-bearing coal and gangue
The company requires clean coal: gangue in coal ≤ 5‰
The company originally used manual sorting, which had low output, high cost and safety risks.
Over the years, Mr. Huang, the person in charge, has inspected the intelligent dry sorting equipment of multiple manufacturers, but none of them could meet the company's requirements after sample sorting tests. On August 20, 2023, Mr. Huang sent 200 kilograms of original coal and went to the site to conduct sorting tests with the DRX intelligent mineral sorting equipment. After seeing the satisfactory test results, he immediately decided to launch the DRX intelligent mineral sorting equipment project.
Implement
Sample test: August 25, 2023, morning, 1 hour
Production test: September 21-22, 2023, two and a half days
Plant renovation and production process optimization: September 23-October 31, 2023
Automatic production without manual labor: November 1, 2023
Company requirements: Gangue in coal ≤ 5‰
Actual production: Gangue content in coal < 1.28‰ (When 19.53% gangue content in raw coal)
Actual gangue removal rate: > 99.34%
Raw material source: washed coal and raw coal (previously manual sorting only used washed coal)
Producing
Inputing
Feeding
Sorting
Outputing
Effects
1. The number of staff has been reduced from 30 to 4, and the annual labor cost has been reduced by more than 2.5 million yuan.
2. The production capacity has increased from 150,000 tons to 600,000 tons, and only one screening is required, without the need for secondary loading and discharge of gangue.
3. The power consumption is less than 1 kWh per ton, and the processing capacity can reach 350 tons per hour.
Coal sorting and quality improvement
Xuejiawan coal: Original coal 3600 kcal, finished coal after sorting: 4400 kcal, raw coal stone after sorting: 1600 kcal.
Coal quality analysis: Original coal
Coal quality analysis: Coal after sorting
Coal quality analysis: Raw coal, gangue and stone after sorting removed
