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Leveraging continuous R&D investment, high-level patented technologies, and extensive large-scale industrial validation, TGS® combines innovation with reliability, enabling enterprises to achieve high efficient, sustainable, low-cost dry separation of fine coal.
The TGS® is based on gradient fluidization technology, designed for dry separation of raw coal size below 80mm. Fluidization allows solid particles to behave like a fluid under airflow. As materials of different densities have different critical fluidization air velocities, the TGS® uses independently controlled air chambers at the bottom of the separation bed to create multiple gradient force fields with varying superficial air velocities. Under airflow buoyancy and vibration, particles of varying density and size enter different fluidization states across each gradient. Through multi-gradient stratification, particles are fully layered by density, and the layers are precisely cut to achieve high-precision separation.
The TGS® system consists of an intelligent gradient-fluidization dry separation system, a digitally controlled air supply system, separation performance X-ray detectors and an intelligent density control system：
The intelligent gradient-fluidization dry separation system is divided into different modules including the homogenisation feeding unit, drive unit, separation unit, discharge unit and dust extraction unit.The operation of all module systems can achieve stable and accurate separation performance.
The digital controlled air supply system is consisted of a low-noise fan, digital air valve and air duct, providing separation power for the intelligent gradient-fluidization dry separation system, and to achieve gradient fluidization separation and improve separation performance.
An automatic sampler and an X-ray separation performance detector are positioned in the middlings or reject streams, with feedback sent to the intelligent density control system for real‑time adjustment.
The intelligent density control system can receive data from the X-ray separation performance detector, bed state sensor, etc. The embedded controller carries an intelligent gradient fluidization density control model to adjust the separation density to achieve automatic operation . It excels in feed conditions with extremely low, extremely high, or highly variable reject rates.
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Coal quality upgradingImprove clean coal value while minimizing slime generation——all without water consumption.
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Existing Plant retrofitting and upgrading
Enhance efficiency of existing system or plant, overcome the challenge of resource deterioration and boost the economic returns for owners
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Full particle-size dry separation
Work in combination with TDS® to create a comprehensive “Dream Plant” of dry coal preparation.
Proven in thermal, coking and chemical coal applications, TGS® is a smarter, more sustainable, and cost-effective alternative to traditional wet coal processing, setting a new benchmark for modern coal preparation under diverse industrial conditions.
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High Intelligence
AI-driven separation with digital control ensures stable performance and unmanned operation
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Superior Separation Accuracy
Accurately distinguishes coal from waste, even under complex operating conditions.
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Large Processing Capacity
Handles high-throughput operations with stable, continuous performance.
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Wide Feeding Size Range
Effectively processes particles with wide of size range in a single unit, reducing installment of multiple systems.
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Higher Calorific Value
Produces higher-calorific-value clean coal without increasing moisture content, maximizing resource recovery and economic benefits.
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No Slime Generation
Eliminates slime generation through a dry process, improving product stability and simplifying downstream tailings handling and reducing environmental management costs.
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Lower Operating Costs
Eliminates the need for water, magnetite, and chemicals while significantly simplizing processing system, reducing energy consumption and maintenance costs.
| Model | TGS 1050A | TGS 2050A | TGS 3050A | TGS 4050A |
|---|---|---|---|---|
| Feeding Size (mm) | Nominal Capacity (t/h) | |||
| 80-13/8 | 40-80 | 80-160 | 160-240 | 240-320 |
| 50-10/6 | 50-100 | 100-200 | 200-300 | 300-400 |
| 25-6/3 | 63-125 | 125-250 | 250-375 | 375-500 |
| 13-3/2 | 63-125 | 125-250 | 250-375 | 375-500 |
|
80-3/2 (Wide Size Range) |
/ | 105-210 | 210-310 | 310-420 |
Note:
Processing capacity is related tothe feed size, moisture, washability and target coal products
The final equipment selection can only be determined after calculation based on the customer’s raw coal washability data.
| Overall Dimensions & Weight | |||||
|---|---|---|---|---|---|
| Model | Length （mm） |
Width （mm） |
Height (mm） | Weight （kg） |
|
| H1 | H2 | ||||
| TGS1050A | 17,947 | 9,303 | 15,260 | 9,524 | 69,239 |
| TGS2050A | 19,947 | 10,303 | 15,260 | 9,524 | 99,239 |
| TGS3050A | 21,348 | 10,946 | 15,611 | 9,560 | 130,675 |
| TGS4050A | 21,985 | 12,118 | 15,110 | 9,800 | 141,864 |
Note：All dimensions and weights are provided for reference only. Final data is subject to the actual product supplied.
TGS® achieves outstanding separation accuracy with the misplace rate of waste in clean product ≤5.0% or the waste discharge rate ≥90%, the misplace rate of coal in waste product ≤1.0% . These indicators are significantly superior to other traditional air separation equipment.
The maximum processing capacity of a single TGS® unit can reach 800 t/h.
Eliminates dependence on operator skills, experience and manual intervention, ensuring stable and consistent separation performance while reducing labor requirements and operating costs.
Applies the latest technology to overcome the limitations of traditional dry separation, resolving the long-standing operational difficulties of conventional air jigs and air tables, by upgrading wind-based separation technology with integrating sensor-based identification, gradient fluidization, and AI technologies.
Developed entirely through MeiTeng’s in-house R&D, TGS® is protected by more than 60 authorized patents, including 10 invention patents, 48 utility model patents, and 1 software copyright.
Utilizes top-tier motors, gear-box,, exciters, inverters, and electrical control components, selected according to customer requirements, to ensure reliable operation and extended equipment life.
The complete machine has obtained CE, EAC and GOST certifications, and can also be customized to meet specific requirements of different countries and users.
All material-contacting parts are equipped with wear-protection measures or wear-resistant liners. Consumable components such as sieve decks , discharge wheels, and discharge chutes are designed for quick replacement.
The use of anti-blocking sieve deck technology thoroughly solves the problems of frequent clogging and difficult cleaning of the bed in traditional air tables.
The modular, skid-mounted structure significantly reduces installation time while enabling rapid deployment, relocation, and integration into mobile processing plants.
MeiTeng product brochure（EN V202510）
How the TGS® Works
Explore the DCP Coal Dry Preparation Dream Plant
Phone: +86 18522356042 
Email: overseasmarket@tjmeiteng.com 
F7, C6 South Tower, International Office Building , ShiDaiAoCheng Commercial Plaza, Binshui West Road, Nankai District, Tianjin, China 
