FOB Price
Get Latest Price1500000 ~ 1e+07 USD / Set
|1 Set Minimum Order
Country:
China
Model No:
-
FOB Price:
1500000 ~ 1e+07 USD / Set Get Latest Price
Place of Origin:
Shijiazhuang
Price for Minimum Order:
1500000 per Set
Minimum Order Quantity:
1 Set
Packaging Detail:
-
Delivery Time:
-
Supplying Ability:
-
Payment Type:
T/T, L/C, Western Union
Product Group :
Contact Person Kaye
Shijiazhuang, Hebei
Annular Shaft Kiln originated in the sixty's of last century,
Germany, formerly known as Beckenbach Annular furnace charge
zone lime Vertical kiln, is a kind of lime vertical kiln, with two
shafts, inner shaft and outer shaft. The raw material is calcined
between the inner and outer shaft space.
Annual Shaft kiln technological process
Annual Shaft kiln inner structure from top to bottom is pre-heating
zone, upper counter-follow calcining zone, lower parallel-follow
calcining zone, and cooling / discharge zone. Raw material is
screened firstly, then transferred to the top of the kiln by the
hoisting hopper, and then feed into the kiln body by the rotary
distributor evenly. Preheated raw material moves into the upper
calcining zone along the annular furnace charge space in where
the raw material is effective in decarburization. The
almost-finished lime in the upper calcining zone moves into the
lower calcining zone for effective homogeneous, then moves down to
the cooling zone, finally drops into the lime silo under the kiln
by lime pusher platform. The finished lime transferred to the
storage by the belt conveyer.
Main system equipment
A) limestone feeding and distributing system: lime stone hopper,
weighing device, hoisting hopper, cable, electric winch, feeding
device and rotary distributor, also limit switch, signal
transmitter, hydraulic cylinder and hydraulic
station.
B) lime discharging system: pusher platform, pusher rod, hydraulic
cylinder and lime silo.
C) fuel distribution system: the fuel manifold, distribution branch
pipe, related instruments and valves, online low calorific value
analysis instrument.
D) exhaust system: exhaust pipe, exhaust fan (1set), bag dust
collector, dedust fan (1 set), also relative valves,
instrumentation, discharge chimney.
E) driving air system: driving air pipe, driving air blower (2
sets), heat exchanger, injector, also relative valves,
instrumentation.
F) the inner shaft cooling air system: pipeline, blower (2 sets, 1
for use, 1 for preparing), also relative valves,
instrumentation.
G) Combustion system: fuel and combustion pipeline, regenerative
burner, UV (ultraviolet) flame detector, also relative valve,
instrument.
H) Control system: MCC (motor control center), PLC, PC, and
printer.
From the above system equipment, Annual Shaft kiln system is
relatively simple, blowers are only six sets, and the permanent
work ones are only five sets. This will bring the following
advantages: 1, the system is simple, easy to operate; 2, less
movable parts, saving electric energy; 3, low failure rate, high
utilization rate, low maintenance cost, and low spare parts
consumption.
Technical Characteristics
1, it effectively reduces the layer thickness of raw
material, the permeability of the kiln body is
better;
2, raw material stone has a complete tumble during across the arch
bridge, the calcination is more uniform;
3, the calcination flame isn't directly in contact with the
material because of the existence of the combustion shaft,
the heat transfer is mainly through the way of heat radiation, the
fuel has better adaptability;
4, heat recovery is finished through effective heat exchange
mechanism, which reduces the heat consumption;
5, counter flow calcination and parallel flow calcination are in
one kiln body, which effectively solves the problems of under-burnt
and over-burnt, the lime activity is improved;
6, it has high degree of automatic control, it can realize fully
automatic control;
7, the productivity elastic range is large, up to *0% ~
**0%;
8, the whole kiln body is a negative pressure operation, in favor
of calcination and more environmental protection;
Technology improvement
Heat exchanger structure makes some
improvements, making the pipeline dredging and replacement more
convenient
by adopting the special material,
the gas sampling tube have been improved, which makes the measuring
instrument no longer blocked
it changes only one temperature
measuring point into 6 (or 7) temperature measurement points in the
recycle air outlet from the old kiln to the improved new kiln,
which will benefit the users accurately know the kiln calcines
completely or not
Arch bridge refractory material
makes further improvement , it changes the inner shaft brick from
two sides occlusion to four sides occlusion, which makes the
overall kiln lining longer life
Flameless combustion
technology
Technical specifications
Daily output: **0 tons to **0
tons
Fuel: coal powder, natural gas, coke
oven gas, converter gas, high / coke mixed or other mixed coal gas(
the mini low heating value: ***0Kcal/Nm3)
Limestone particle size: *0mm to
*0mm (large, small granularity ratio 1: 2)
Heat consumption: between
**0~**0kcal/kg lime
power consumption: *8Kwh/t
lime
Lime quality: the activity >**0ml
(4NHCI, 5 minutes) CO2 residue≤ 1.5%;
Country: | China |
Model No: | - |
FOB Price: | 1500000 ~ 1e+07 / Set Get Latest Price |
Place of Origin: | Shijiazhuang |
Price for Minimum Order: | 1500000 per Set |
Minimum Order Quantity: | 1 Set |
Packaging Detail: | - |
Delivery Time: | - |
Supplying Ability: | - |
Payment Type: | T/T, L/C, Western Union |
Product Group : | Lime Kiln |