DLC-5 NC asphalt mixture fast separator in conformity with the provisions of the T0722-93 asphalt mixture test in highway engineering JTJ-93. Determination of asphalt content in asphalt mixture. Determination of asphalt content in asphalt pavement. Asphalt solutions separated by this method can be recycled to assess the aging properties of the asphalt.

DLC-5 NC asphalt mixture fast separator main features:

The instrument adopts stepless speed regulation, has the advantages of high separation speed, simple detection process, energy saving, stable performance, light weight, small size, low noise, etc..

Main technical parameters:

1, material bowl capacity: 1500g/3000g

2, speed: 3000r/min

3, pot diameter: 280mm

4, the ambient temperature is less than or equal to 35 DEG C.

5, relative humidity: less than 85%.

6, the whole power consumption: 500W.

7. Net weight of the instrument: 60kg

8, the power supply voltage: 220V

9, size: 600X440X620mm

First, the instrument overview:

The instrument is a kind of special equipment used to separate asphalt mixture, which is a new product developed by our factory on the basis of digestion and absorption of foreign products.

The instrument is mainly used for the detection of the gradation of asphalt mixture and the content of asphalt content in the Department of road traffic engineering and related colleges and universities. Is a kind of rapid detection equipment, which is separated from the asphalt mixture by the centrifugal force of high-speed rotating equipment. 10 times more effective than the traditional distillation method. The most suitable for road engineering construction supervision and asphalt mixture manufacturers on-site rapid detection.

Two, the main features:

The instrument adopts stepless speed regulation, has the advantages of high separation speed, simple detection process, energy saving, stable performance, light weight, small size, low noise, etc..

Four, the main structure of the instrument:

The instrument is mainly composed of a base, a motor, a rotary material bowl, a collector and an electronic speed regulation and braking device. During the operation, the electric machine is directly driven to rotate, so that the centrifugal force is generated. The solvent is dissolved in the material bowl, and the asphalt solution is thrown out of the filter paper.

Five, the use of methods and operating procedures:

(a) preparatory work

1, according to the T07722-93 content of asphalt mixture test (centrifugal separation method), the asphalt mixture specimen from the material transport truck in mixing plant, applied in a metal pan of appropriate mixing, when the temperature dropped below 100 DEG C, with a large beaker to get mixture sample mass about 1000g (M) (coarse grain type asphalt mixture high limit, low limit of fine grained, grain type with accurate limit) to 0.1g.

2, such as from the road with drilling machine or cutting method to obtain the sample application of electric fan blowing to make it completely dry, set the microwave oven or oven appropriate heating into a loose state when sampling, but not with the hammer, in case of aggregate crushing.

(two) test procedure:

1, to a sample of the beaker into the trichloroethylene solvent, the dosage of solvent immersion, recording, soaking for 30 min, with a glass rod to stir the appropriate asphalt mixture, fully dissolved.

Note: can also be directly immersed in the centrifugal separator.

2, the mixture and solution into a centrifugal separator, with a small amount of solvent adhesive and glass beaker stick all washed into the separator.

3, said to take clean ring shaped filter paper quality, accurate to 0.01g. Note that the filter should not be used repeatedly, damage can not be used, a powder adheres to the application of brush clean.

4, the filter paper pad stamped on the edge of fastening in the separator, separator outlet, in put bottles, is should pay attention to sealing, prevent outflow of liquid into fog dissipation.

5, turn on the power, turn on the switch, three digit display 000 indicates that the machine is normal. Press the start button, separator began to work, work process for low speed for 20 seconds (then from the middle of the machine to see if the rotation of the motor does not turn, adjustable rear panel regulating speed slow, medium speed rotation) 20 seconds (with the same speed, the speed regulation of the speed which is higher than that of low speed high speed 140 seconds), a total of 180 seconds stop.

Add a new solvent 6, from the hole of the upper cover, pause after 3-5min, according to the zero key and then press the start button, the new separator automatically, so the operation extracts several times until out of limpid yellow so far.

Note: each addition shall not exceed the capacity for trichloroethylene, generally about 200 ml.

No more than 10 times per hour.

7, remove the cover, the circular filter paper in a hood or evaporation in indoor air after drying, and then into 105 - 5 DEG C dried in the oven, the quality of its weight part (M 2) as a part of mineral powder.

8, the aggregate in the container carefully removed in the cupboard or in the air after evaporation into the 105 5 C drying drying box (usually 4h) and put them in the dryer cooling to room temperature, weigh the quality of aggregate (M 1).

9, with asphalt solution filter recovery pressure filter bottle, leaked into the filtrate by powder weight m3 paper that if there is no pressure when the filter is also available burning law.

(three) as determined by the quality of powder extract in combustion process:

1, the extraction of recycling bottle into the cylinder, the exact amount to M1 (Va)

2, stirring extraction liquid, remove the 10mL (Vb) into the crucible, proper heating in hot bath solution sample into dark after the high temperature furnace (500-600 C) in the combustion residue, remove the crucible cooling.

3, to the crucible according to the amount of proportion of each 1g residue 5mL, injected amine carbonate saturated solution, static 1H, add 105 - 5 DEG C oven drying.

4, remove and put in the dryer cooling, said the quality of taking the residue (M4).