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Lignite Dryer







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Product Introduction

Lignite dryer or lignite coal dryer is a drying machine mainly used for drying lignite coal. Traditional drying method adopts centrifugal machine for dehydration, and the equipment is expensive and has low production capacity and small dehydration extend. Generally it can only reduce about 10% of the water and there is still 15%-20% of water content. Lignite rotary dryer adopts the new technology of first crushing and scattering the lignite coal and drying it with heating power, making the drying disposal of the materials realize continuity, industrialization and automation. The water content of the moist lignite coal processed by brown coal dryer can be reduced from 25%~30% to below 13%, and the moist lignite coal can be used as bunker coal, thus improving the coal washing and dressing technology and having excellent economic, social and environmental benefits.

lignite dryer

 On the condition of maintaining the quality of the lignite coal, lignite rotary dryer adopts low-temperature four-level drying technology to evaporate the water containing in the lignite coal to below 13%. The first-level drying area removes most water at the high temperature sate with 400℃ of high temperature, making sure that the chemical component of the lignite coal remains the same and that the lignite coal is not easy to burn; the second-level drying area has the indoor temperature of 300℃, it will remove the water through medium-temperature strong induced air to make sure that the lignite coal do not have coking; the third-level drying area has the indoor temperature of 120℃-210℃, and the crushing device inside the roller will repeatedly hit and scatter the materials and dry them with fair current; the fourth-level drying area is high exhaust area, and the indoor temperature is 60℃-80℃, and the water containing in the materials will be removed by the low-temperature hot airflow with negative pressure of the induced air system
Lignite dryer can be applied to drying lignite, municipal sludge, paper sludge, leather sludge, printing and dyeing sludge, chemical materials and pharmaceutical liquid fermentation residue, food fermentation, sugar residue, rosacea and chemical organic waste.
² Can dry coal slurry, raw coal, float fine coal and mixing fine coal;
² Used in building industry to dry coal slag, clay, bentonite, limestone and sand;
² Used in mineral processing industry to tail ore;
² To dry non thermal-sensitive materials;
²  Lignite coal dryer has strong anti-overload capacity, big processing capacity, low fuel consumption and low drying cost.
² It adopts concurrent drying method, so that the smoke and the moist materials go into the dryer machine from the same side. Relying on the high-temperature smoke, the materials will get high evaporation intensity. The outlet temperature of the drying machine is low and the heat efficiency is high.
² According to the property of different materials, the running parameters of the equipment can be changed, so that the materials inside the dryer cylinder can form stable and whole section of material curtain to improve the mass and heat exchange.
² It adopts new type of feeding and discharging device, thus completely eradicating feeding blockage, incontinuity, uneven and returning charge and reducing the load of the dust collection system.
² According to the customers' requirement, it can control the product granularity and water content. The water content of the final products can reach below 8% and the granularity can be controlled to below 8mm.


Lignite dryer is a kind of equipment which takes advantage of lignite and coal slush after dried. This dryer can efficiently reduce waste. Our company has acquired many patents. After being dried, lignite can be used to cooking heating, water processing, gold recovering and iodine extracting.
With the implementation of sustainable development, the comprehensive utilization and development of mineral resources has become important subject. It is an urgent problem to utilize coal slush which has been left behind. Making use of precious coal slurry not only can produce great economic benefits, but also can solve the problem of land occupancy. The most effective method is to dehydrate lignite. This dryer can dry lignites while preserve the quality of raw materials. The moisture content can be reduced to below 13%. Combustion efficiency gets improved and utilization of coal resources is more sufficient.
Lignite dryer is mainly composed of crusher, conveyor, feeder, heat source, rotary dryer, discharger, induced draft fan, dust collector, temperature controller and electric system.
l Environmental protection, energy saving, reducing loss of lignite;
l Improve the calorific value of brown coal, desulfurization and reduce volatility;
l Save investment, small footprint and less labor force;
l Reliable, simple operation and easy maintenance; safe and durable;
l Can adapt to various materials;
l Even drying to ensure preserving quality of original materials;
l Continous work and large production capacity;
l Granule and moisture content can be adjusted according to customer’s requiremts

Technical Parameter

Item Gradient
Rotational speedr/min) Inlet air temperature(℃) Capacity (t/h) Power(kw)
MGT600 3-5 3-8 ≤850 Different Materials Different Capacity. 3
MGT800 3-5 3-8 ≤850 4
MGT1000 3-5 3-8 ≤850 5.5
MGT1200 3-5 3-8 ≤850 11
MGT1500 3-5 3-8 ≤850 15
MGT1800 3-5 3-8 ≤850 18.5
MGT2000 3-5 3-8 ≤850 22
MGT2200 3-5 3-8 ≤850 30
MGT2400 3-5 3-8 ≤850 37
MGT2600 3-5 3-8 ≤850 40
MGT2800 3-5 3-8 ≤850 55
MGT3000 3-5 3-8 ≤850 75
MGT3200 3-5 3-8 ≤850 90
MGT3400 3-5 3-8 ≤850 110
MGT3600 3-5 3-8 ≤850 150
MGT4000 3-5 3-8 ≤850 190
MGT4200 3-5 3-8 ≤850 200
MGT4500 3-5 3-8 ≤850 260

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