ABOUT US:
As a leading Chinese machinery and truck exporter, we have a professional experience of 8years in this field. Besides our trucks of high quality, our international sales team will also provide you excellent logistics service and after-sales service. We will always do our best to solve all the problems and put our customer's interests in the first place.
We can supply:
1) ALL kinds of trucks.
(Dump truck, mining dump truck, tractor truck, truck trailer ,towing truck , water tank truck, concrete mixer truck, oil tank truck, garbage truck, cargo truck, port terminal tractor, refrigerated truck, truck mounted crane, fire truck, suction sewage truck, bus , etc)
2) All kinds of construction machinery.
(Wheel loader, excavator, folklift, cranes, paver, road roller etc.)
RD90 Asphalt Batch Mixing Plant specification and configuration
I,Basal configuration
1, Cold aggregate supply system
(1)Components:
Four aggregate hoppers and four belt feeders, Aggregate belt conveyor. The tilted belt feeding conveyor,
Middle filter
(2)Specifications:
Four aggregate hoppers and four belt feeders:
Single hopper volume: 6.5m3
The hopper width: 3.2m
Loading height: 3.0m
Motor power: 4×1.5kw(frequency control) ;
Vibrators on the hopper wall: 2×0.25kw
Aggregate belt conveyor:
Belt width:500mm
Motor power: 4kw
The tilted belt feeding conveyor:
Belt width: 500mm
Motor power: 4kw
(3)Characteristic:
1)Adopting frequency conversion timing with credible capability, modularized design will be convenient for installation and conveyance.
2)The active roller and passive roller was equipped with prelubricated long-life bearings,tension device,and deviation prevented wheel which can adjust the tightness and deflection of belt conveyor;there is cleaning device inside and outsider belt,in order to prevent the adhering aggregate to scuff belt.
3)there is emergency stop switch on belt conveyor;
4)Flow automatically structure can reduce the flying dust. Prevent the waste material entering the dryer drum; reduce the heat loss. Avoid jam in the hot aggregate elevator and the vibrating screen.
2.Drying drum
(1) Specifications:
Drum diameter: 1.5m,
Drum length: 6.6m
Motor power: 4×7.5kw
(2) Characteristic:
Outside the drying drum is covered with a 50mm heat preservation structure, Inside the drying drum fixing up diversified blades used for lifting aggregate, it should be easy to exchange heat between the flame and the aggregate, the drying drum is driven by four friction wheels,universal joint, smoothly and evenly drive.
3. Oil burning system
(1) Components:
A set of diesel oil burner (automatic control); the diesel tank will be supplied by client, a set of oil pipes;
(2) Speciation:
Oil consumption:600kg/h;
Wind fan power: 15kw
Oil pump motor: 3kw
(3)The burner characteristics:
(1) Burner: the burner is equipped with
gas ignition device;
(2) Oil burning adjust method:
Automatic control; adjusting ratio:1:3;
4.Hot aggregate elevator
(1) Specifications:
Motor power: 11kw
(2) Characteristic:
Combined type discharging;
feed inlet and discharge outlet are
made by special structure to reduce abrasion and noises.
5. Dust catcher system
Components:
Gravity dust catcher, A set of six-drum cyclone dust catcher, a set of water dust catcher
Three screw conveyors make up of dust recycling system.
Specifications:
The power of drawing fan: 45kw
Water pump power: 2×3kw;
Maximum wind speed for dust removal system: 34000m³/h.
Screw conveyor power:3×4kw
Characteristic:
Three-grade dust removal system features with good dust collecting effect; larger-size dust from gravity dust catcher will be conveyed into aggregate elevator for recycling, smaller-size fillers from six-cyclone dust catcher will be conveyed into filler elevator for recycling.
6.Mixer tower assembly
(1) The vibrating screen with four layers. (single shaft outside)
Specifications:
Motor Power: 11kw
Mesh size:37.5×37.5,25×25,12×12,5×5 for a set in all;
Attention: The screen mesh can be chosen according to the clients' requirement. The client must indicate when order the plant, and we will execute according to this configuration.
(2) Hot material bins
Four separated bins are equipped with large volume; cylinders are placed in parallel, decompression pipelines are installed in bins.
(3) Weighing bins
1) aggregate weighing hopper:
Model: single hopper, suspending by three upholding points, with transportation fixed part;
Rated capability: 1000kg
2) Filler weighing hopper;
Model: single hopper, suspended by three upholding points, with transportation fixed part;
Rated capability: 150kg
Screw conveyor power:4kw;
3) Asphalt weighing hopper:
Model: single filler, heat preservation, suspending by three upholding points, with transportation fixed part.
Rated capability: 70kg
Characteristic:
The sensor uses TOLEDO made in China & American, correct computation, offset could compensate voluntarily.
(4) Mixer
Specifications:
Installed power: 2×18.5kw
Characteristic:
(1)Mixer is made from European technology, with synchronizing gear and pneumatic revolving door
(5) Asphalt spraying system
Specifications:
Motor power of asphalt pump: 7.5kw
Characteristic:
Spray asphalt quickly and evenly by pressure, good for shortening the mixing time and enhancing the output.
7.Filler supply system
Components and specification
(1) Filler elevator:
Installed power: 3kw
(2) filler temporarily storage silo: 1.8m3
(3) One screw conveyors
Installed power:4kw;
Characteristic:
The screw conveyor outlet installs butterfly valve to control wallop. Filler temporarily storage silo using high-press air to explode the agglomeration
8. Asphalt supply system
Components and specification
(1) Dump tank(2 m3)+ asphalt tank(40m3)
(2) Hot oil heater heated by diesel: 0.3million kcal hot oil heater
Total power: 10.45kw
(3) a set of diesel oil burner, asphalt pipes, valves and pumps with.
(4)Motor power of Asphalt Oil discharging pump :1×7.5kw;motor power of circulating pump:1×5.5kw
9.Pneumatic system
Components:
A set of air compressor, cylinder, simple air compressor room,electromagnetic valve and pneumatic pipeline, air cylinder and electromagnetic valve;
Specifications:
An air compressor:1.05m3 /min
air compressor power: 7.5kw
characteristics:
FESTO electromagnetic valve and cylinders with credible capability.
10.Electric control system
(1) Control house
The figure dimension3x2.2x2.5m; Copy container structure, the walls, door and windows are made of colorized steel plate. Pleasing shape, good seal; easy to hoist and transport.
(2) Electric control part
Box type control cabinet, main electric parts are SIMENS , Schneider etc. global famous brand, which has interlock and two-grade protection; the big motor adopt reasonable voltage-reducing boot-starting; equipped with manual control device for urgency and displayer for aggregate balance,filler balance and asphalt balance; digital converter for cold aggregate; Japan Omron colorized touch screen and PLC controller, can operate by automatically, Semi-automatically and hand control; and reserve inlet position for printer; asphalt will be weighed by two steps and can inspect asphalt&aggregate ratio for each batch; Control is advanced, capability is credible, operation is convenient and obvious.
II,The technical index
1. Capability (standard conditions):
90t/h;
2. The mixer rated mix capacity:1100kg/batch;
3. oil consumption(standard conditions): 6.5kg/t;
4. Operation mode: automatism control, Semi-automatism control and manual control;
5. The hot mixture discharge temperature:130~160ºC(common asphalt)
6.The figure dimension:(L×W ×H)32×27×16m
7.The total installed power: 231.95kw
III, Technical specification
1.The technique request about capability
It can be made clear that the capability of asphalt mixing plant is that under the standard conditions; it must fulfill the requirements as below simultaneously:
(1)Environment temperature :20°C,1 standard atmospheric pressure; local altitude should be under 1000m;
(2)The average humidity of Cold aggregate <5%
(3)The temperature of the hot asphalt mixture <160ºC
(4)The mixture is middle size, the density of stone material in the mixture≥ 1600kg/m3
(5)The content of fine aggregate in mixture <35%;
(6) The filler proportion in the raw aggregate material should not higher than 3%.
(7)The cold aggregate must be clean, and it should not include more soil and sundries. The cold aggregate supply should be continuous.
(8)The cold aggregate should not include large quantity of oversize grain; otherwise it will cause jam and reduce the aggregate supply capability.
(9)The water content in filler material should be < 0.5%, the filler addition should be < 8%,and the filler should not have conglomeration, agglomeration, otherwise it will cause material supply break and time delay accordingly influence the capacity.
(10)The asphalt should be with well wrapping capability, during standard mixing circle, the aggregate should be completely wrapped by asphalt; the asphalt temperature should be controlled in the scope of 150ºC±5ºC. The using asphalt is normal asphalt without any other additives.
2. The requirements for fuel:
A. Light oil: diesel oil,heat calorific power is no small than 46055kJ/kg;
B. The heavy oil:thermal value≥9600kcal/kg;
kinematic coefficient of viscosity at 50ºC≤180cst;
Mechanical impurity content ≤0.3%;moisture content≤3%;
C.The customer needs to purchase heavy oil according the oil quality standard, and require the oil supplier to provide oil quality essay or the correlative certificates. The using fuel must have well burning and pulverization capability. Forbid using kinds of causticity fuel or the products from unqualified oil producing factory. (All the burner damage or failure that caused by diesel or heavy oil quality problem, the correlative damaged spare parts and customer oneself should afford the repair expense.
Audited Supplier 
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