GE coal quality analysers are the fourth generation of online radiometric analysers (also called ash analysers). These analysers allow you to monitor the immediate quality of fuel online, directly on the conveyor belt. The analyzers allow monitoring of actual coal quality online directly on the belt conveyor, can determine the calorific value, ash content and flow rate within specified time interval. Use of the units will improve the excavation efficiency and allow optimization of coal consumption which leads to significant cost reduction. It has been developed using our more than 30 years of practical experience and knowledge in the field of non-contact coal quality monitoring and taking into account the needs of our key customers. Based on these developments, the most efficient dual gamma method of fuel quality measurement has been selected, which can be applied throughout the technology of open pit mines, coal preparation plants and power stations. These analysers can also be used for measuring of oil shale quality online.
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Diagram showing the operation of the coal quality analyser on a conveyor belt or excavator boom:
Scheme of operation of the coal quality analyser together with the moisture detection stage:
Diagram of the variant adaptation of the coal quality analyser for measurements in chutes and pipelines:
Scheme of operation of the coal quality analyser connected to the automatic control system of the sorting flap (automatic sorting of coal according to its quality):
By placing online analysers directly on the mining equipment, it is possible to verify that the quality of the coal is within the expected parameters. At the same time, the extraction requirements of individual machines can be adjusted operationally. By controlling the extraction of individual machines, it is possible to ensure uniform quality of the coal supply and significantly reduce the difficulty of subsequent treatment or homogenisation of the coal.
Online data of the quality of mined coal from belt conveyors transporting coal from individual sections of the mine is used for mine management. Explosive environment design can be placed directly in the mining corridors.
Coal with different parameters is accepted at the stockyard's entrance. Based on online measurement, it is possible to decide on its defined storage method. The quality of the stored coal is measured using online analysers on the stockyard machines. When coal is removed from the stockyard, the system is able to determine the final quality of the required supply.
GE Series analysers in dispatch control the quality of coal according to customers' requirements. During the loading period, the current balance is monitored. In case of non-compliance, a correction can be made by replenishing the remaining stock with coal of a different quality.
Due to their fast response, GE devices are used to control transfer points for direct coal sorting. In the event of a sudden change in the quality parameters, the high quality of coal is sent directly to the expedition, while the coal out of required quality range is stored separately, e.g., at the stockyard.
The GE Series online analyser, installed on the hydrocyclone discharge chute or separator, measures the ash content of the wet coal. If the ash content deviates from the required level, the instrument sends a signal to the control unit to dilute or thicken the wash emulsion.
For power plant coal feeding control, GE Series analysers are installed on belts in front of the coal storage bunkers, where the fuel's calorific value is monitored. Based on the measuring, the coal is placed to each bunker in a defined manner. This allows the blend the coal according to its quality before burning in the boiler to prevent a drop in performance, which could cause the boiler shut down.
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The detection stage is designed with an emphasis on maximum safety and reliability. Custom radionuclide emitters are stored in a special lightweight protective container made of tungsten and stainless steel, ensuring its durability even in the event of a fire or other emergency.
In non-working mode, the protective container allows safe transport and storage of radionuclide emitters without the need for their removal and handling. When placing the container in the working position, the measuring beam of radioactive radiation is directed only perpendicular to the conveyor belt, while the free movement of persons around the measuring site is not restricted in any way.
GE Series Coal Quality Analysers. They represent the fourth generation of online radiometric analysers. The analysers allow immediate online monitoring of fuel quality, right at the conveyor belt. The technology can determine its calorific value, ash content and delivered volume for the selected time period.
The analyser improves mining efficiency and optimises fuel consumption, resulting in significant cost savings. We developed the technology using our more than thirty years of practical experience and knowledge in the field of non-contact coal quality monitoring. At the same time, we have taken into account the needs of you, our valued customers.
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Online evaluation of ash content in %.
Online evaluation of calorific value in MJ/kg or kcal/kg.
Online monitoring of fuel flow rate (conveyor capacity) in t/h.
Online monitoring of the height of the layer of the product passing on the conveyor in mm.
Measurements in three independent time registers (instantaneous value, defined time period manually switched or preset, shift average).
Touch-screen control unit with clear graphical and numerical display of the measured values.
LAN network connection for remote monitoring, collection of measurement results, archiving, inspection and maintenance of the system.
Automatic restart after unplanned power failure.
Direct storage of results in the SQL database of the company's information system.
Industry standard 4-20 mA analogue outputs.
Automatic blocking of measurements when technology is stopped.
Backup in the event of a short-term power failure.
Instrument calibration for different types of coal.
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Measurements in explosive environments.
Direct measurement in hoppers and tubes.
It communicates in all languages.
No contact with moving coal.
Does not interfere with the operation of coal handling equipment.
Direct measurement on conveyor belt types.
Completely safe operation in terms of radiation protection.
Accurately measures other organic carbon-based materials.
Works regardless of the height of the layer on the belt conveyor.
Measure directly on the conveyor belt without crushing.
Highly resistant to electrical and electromagnetic interference.
Operates without grain restriction, from dust to freshly mined coal.
Highly resistant to extreme vibration and mechanical stress.
You will achieve higher mining efficiency.
You will achieve higher mining efficiency.
You will achieve higher mining efficiency.
You will achieve higher mining efficiency.
Interested in learning more about the technology and how it can be used? Send us an e-mail or give us a call. We will then arrange a meeting to present our ENELEX online radiometric coal quality analysers in detail.
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