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|Product Name:||Industrial Drying Equipment||Processing Material:||Sludge Coal Slime|
|Heat Source:||Coal, Oil, Natural Gas, Timber||Finished Product Application:||Feedstuff, Fertilizer, Fuel, Building Materials|
|Shell Length:||11800mm||Shell Volume:||30m³|
Environmental Friendly Sludge Coal Slime Industrial Drying Equipment ISO CE IQNet
Equipment Introduction :
Sludge refers to the sediment produced by dealing with waste water through the physical, chemical,
biological methods, According to their sources, which can be divided into electroplating sludge, printing
and dyeing sludge, tanning sludge, paper sludge, pharmaceutical sludge, sewage sludge, living sewage
sludge and petrochemical sludge, etc. Because of its features of poor mobility, high viscosity, easy to
agglomerate, and the water is not easy to evaporate and so on, it’s very hard to dry, and the high drying
technology is required (the drying technology of this drying system is also adopted to dry the coal
slime, gypsum and other similar wet sticky materials).
With the continuous enhance of people's awareness of environment protection, and sludge drying
technology is also in the rapid development, the constant innovation and improvement also happens in
the aspects of energy saving, safety, reliability, sustainability. Our company environmental friendly
sludge industrial drying equipment is going to reduce the water content of dewatered sludge from 80 +
10% to 20 + 10%. It makes use of sludge to produce valuable fertilizer, concrete aggregate, even fuel.
That is why we call it environmental friendly.
Advantages of Industrial Drying Equipment:
1. The weight of the dried sludge can be reduced to 1/4 weight of wet material before drying, which
greatly reduces the enterprise's environment and economic pressure;
2. The air inlet temperature of the dryer is 600-800℃, and it can be used for sterilization, deodorant, etc.
at the same time of drying, and reliable guarantee will be provided for the utilization of dried products;
3. The dried products can be used as feedstuff, fertilizer, fuel, building materials, and raw materials for
extracting heavy metals, to realize waste utilization.
The dewatered sludge will be transported to feeding head of the dryer through the screw conveyor after
scattering, and then it will be sent into the inside of the dryer through the unpowered spiral sealing
feeder (the patent technology of our company), and going through several following working areas after
getting into the dryer:
1. Material leading-in area
The sludge will come into contact with the high temperature negative pressure air after getting into this
area and plenty of water will be rapidly evaporated, and the sludge can’t be formed into sticky stuff under
the stirring of large guide angle lifting plate.
2. Cleaning area.
The material curtain will be formed while the sludge is lifted up at this area, and it will cause the material
stick on the cylinder wall while it’s falling down, and the cleaning device is installed at this area (Lifting
style stirring plate, X type second time stirring plate, impacting chain, impacting plate), the sludge can
be quickly removed from the cylinder wall by the cleaning device, and the cleaning device can also
crush the materials which are bonded together, so as to increase the heat exchange area, increase the
time of heat exchange, avoid the generation of wind tunnel phenomenon, improve the drying rate;
3. Inclined lifting plate area
This area is the low temperature drying area, the slime of this area is at the low moisture and loose
state, and there is no adhesion phenomenon at this area, the finished products reach the moisture
requirements after the heat exchange, and then enter the final discharge area;
4. Discharging area
There aren’t stirring plates at this area of the dryer cylinder, and the material will be rolling to the
The sludge gradually becomes loose after drying, and discharged from the discharging end, and then
sent to the designated position by the conveying device, and the fine dust drawn out along with the tail
gas is collected by the dust collector.
Hot air enters into the drying machine from the feeding end, and the temperature is gradually reduced at
the same time of material convection heat transfer, and the water steam taken out under the suction of
induced draft fan, and then emitted into the air after processing.
Application after drying :
During the wastewater treatment process of the smelting plant, the circuit board printing factory,
electroplating factories and other enterprises, and the sludge produced contains plenty of heavy metals
(copper, nickel, gold, silver, etc.). There will be a major pollution if these metal elements are drained, but
considerable economic benefits can be reached after extraction and refining. The approximate calorific
value of the dried sludge is from 1300 to 1500 calories, three tons of dry sludge can be equivalent to one
ton of 4500 kcal coal, which can be burned in the furnace mixed with coal. Concrete aggregate, cement
admixture and the production of pavement encaustic brick, permeable brick, fiber board, to make bricks
by adding into the clay, its strength is equivalent with common red bricks, and it’s with a certain amount
of heat, in process of fired brick, the spontaneous combustion can be reached to increase the heat. The
dried sludge will ferment into high quality organic fertilizer after adding the cow manure, with good
fertilizer efficiency, safe and convenient use, and disease resistance and to promote growth, which can
also fertilize soil. There is high content of N, P and K in the sludge, and it’s much higher than that of pig
manure, cattle manure and chicken manure, and there is rich organic compound content. It can be used
as agricultural fertilizer after the processing of environmental friendly sludge industrial drying equipment,
and can make quality soil through re-proportioning landfill.
|Model||Shell diameter(mm)||Shell length(mm)||Shell volume(m³)||Rotary speed(r/min)||Power(kW)|