Lime-stone drying technological complexes
Technological complexes are designed for drying lime-stone (lime equipment) and inert materials of all types, construction rocks and other bulky materials for example: sand, gravel, ore, slag, broken stone, gypsum stone, lime-stone, dolomite as well as glass, ferrous alloy, chips and many others.
Drying technological complex
Technological complex consists of the following operations:
- Material dozing;
- material drying;
- material supply
Initial wet material is transported into the receiving hopper of the plant by means of conveyor or transferred by overhead crane in the self-discharging containers. Material from the receiving hopper goes to drying cylinder by means of automatic dosemeter, wherein it undergoes thermal treatment.
Material discharge from drying cylinder is carried out continuously to belt conveyor or intermediate hopper.
Sleeve filter is used for cleaning the exit gases and aspiration air. Dust content in the plant emissions does not exceed 50 mg/m3.
Material loading and unloading, maintenance all set mode parameters of complex operation: gas/air proportion on the burner, water filling of combustion products of the required temperature, power correction of the burner device at changing the efficiency of the drying process is performed automatically. The possibility of operational amendment for drying process parameters is provided as well as the individual drying programs setting for each inert material.
- fractional composition of initial material – up to 40 mm.
- initial surface moisture of raw material – mot more than 15%
- moisture in the material body — mot more than 2,5%
- line capacity – 20 tons per hour (guarantee);*
- line dimensions (length х width), m – 25х10;
*Capacity of technological complex may vary and depends on material initial moisture, burner device power and the size of a drying cylinder (diameter from 1,2 to 2,8 m).
Approximate delivery set: (equipment placement is provided on the scheme below):
- Dry material hopper (volume - 10 m3)
- parallel-slide valve (drive type – manual)
- plate feeder
- screw conveyor
- heat generator (without lining)
- drying cylinder 2,2х14m
- belt conveyor with high temperature belt (≈ 200 оС)
- capacity 20 t/hour
- cyclone of type CN 15 (cleaning degree 80%)
- sleeve filter SFR360
- draught machine DN 12,5
- elevator and silo (if necessary)
Drying complex technological scheme
Delivery set varies as well as the lengths of transporting equipment are recalculated depending on targets set by the customer and territorial conditions for placing the technological complex.