JPS6145002B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing an asphalt mixture that is a paving material.

Asphalt plants that manufacture asphalt mix materials are dotted with high-noise sources such as burners and exhaust fans on the premises, so the installation location is restricted to areas similar to industrial areas, and the temperature of the manufactured asphalt mix material does not drop. It is desirable that it be installed at home,
There are areas in urban areas where it is impossible to install asphalt plants due to noise pollution due to the limited transportation distance from manufacturing plants, and where it is not possible to supply high-quality asphalt mixture.

In view of the above points, the present invention installs a satellite plant that only stores, weighs and mixes heated aggregate in a place where an asphalt plant cannot be installed, and transports the heated aggregate in the asphalt plant to the satellite plant. The asphalt mixture is temporarily stored in storage bins while being kept warm according to composition or particle size, and when the asphalt mixture is needed, the heated aggregate is taken out from the desired storage bin and mixed while adding molten asphalt in a mixer installed below. This paper proposes a method for manufacturing asphalt composite material.

Embodiments of the present invention will be described below based on the drawings. Reference numeral 1 designates a known asphalt plant, which includes a dryer 2 that heats and dries aggregates, a dust collector 3 that captures dust scattered from the dryer 2, a plant main body 4 that stores, measures, and mixes heated aggregates, and other incidental equipment. It is made up of etc. The dryer 2 is of a rotary kiln type, in which a cylindrical drum is rotatably supported, and a large number of raking blades are arranged inside the drum, and the cold aggregate being fed is raked up by the raking blades, and a curtain is formed. The aggregate is heated to about 160° C. by hot air sent from the burner 5 while rolling down the inside of the drum while falling in a shape, and is then supplied to the plant main body 4 via the hot elevator 6. The plant main body 4 includes a storage bin 8 equipped with a screen 7 that sieves supplied heated aggregate according to particle size, a stone powder storage bin 10 that stores stone powder supplied from a stone powder elevator 9, a dust storage bin 11 that stores dust, Measuring tank 1 installed below them
2. Mixer 13 and melted asphalt to mixer 1
3. Asphalt supply device (not shown)
It is made up of etc. Reference numeral 14 denotes an exhaust fan installed at the end of the flue 15 connected to the dust collector 3. Combustion exhaust gas is sucked by the exhaust fan 14 and sent to the chimney 16.
released into the atmosphere via

17 is a satellite plant, which is installed in a place away from asphalt plant 1, and temporarily stores the aggregate heated in asphalt plant 1, adjusts the measurement and mixing of asphalt mixture when necessary, and makes asphalt mixture. It is manufactured.
18a, 18b, 18c... are large-capacity storage bins for storing heated aggregate, and have a heat-retaining structure.The inside is partitioned so that several types of materials can be stored. The heated aggregate produced in the plant 1 is transported to the upper part of the plant by a vertical transport device 19, and is distributed and stored in desired storage bins 18a, 18b, 18c, etc. by a distribution chute 20. Storage bins 18a, 18b,
Below 18c...... there is an aggregate measuring tank 21a,
21b, 21c....... are provided, and the heated aggregate weighed in a predetermined amount in the aggregate measuring tanks 21a, 21b, 21c... A predetermined amount of stone powder from a stone powder storage bin 24 that stores the delivered stone powder is weighed in a stone powder measuring tank 25 and thrown into the mixer 22, and molten asphalt is weighed in an asphalt measuring tank 26 and added to the aggregate in the mixer 22. An asphalt composite material is manufactured by mixing.

Therefore, in order to produce an asphalt mixture by the method of the present invention, a storage bin 8 is required to store the aggregate heated by the dryer 2 of the asphalt plant 1 according to particle size.
One batch of heated aggregate is weighed in a measuring tank 12 and mixed in a mixer 13 based on an aggregate composition often used as an asphalt mix, such as dense grain, coarse grain, modified topeka, etc. Then, it is discharged from the mixer 13 without adding molten asphalt, loaded onto a truck 27, and transported to the satellite plant 17. satellite plant 17
The heated aggregate is transported to the upper part of the plant by a vertical transport device 19, and then transferred to desired storage bins 18a, 18b, 18c by a distribution chute 20.
It will be put into... In this case, storage bins 18a, 1
8b, 18c....... are stored with heated aggregates according to their composition. For example, the storage bin 18a has a dense grain size, the storage bin 18b has a coarse grain size, and the storage bin 18b has a coarse grain size.
c shows the composition of aggregates by composition such as modified Topeka. If dense-grained asphalt is required, one batch of aggregate from the storage bin 18a is weighed in the aggregate measuring tank 21a and fed into the mixer 22. At the same time, a predetermined amount of stone powder is added from the stone powder measuring tank 25 into the asphalt measuring tank. A predetermined amount of asphalt from 26 is put into the mixer 22 and mixed and adjusted to produce dense-grained asphalt. Coarse-grained ascon, modified topeka, etc. are produced in the same manner.

In the above, the storage bins 18a, 18b, 18c, etc. of the satellite plant 17 store heated aggregates with different aggregate compositions such as dense grain size, coarse grain size, modified topeka, etc. The heated aggregate, which is sieved by particle size by the screen 7 of the asphalt plant 1 and stored in the storage bin 8, is taken out by particle size and transported to the satellite plant 17.
The particles may be stored in storage bins 18a, 18b, 18c, etc. according to particle size. and each storage bin 18 according to the desired asphalt mixture composition.
A predetermined amount of heated aggregate is taken out from a, 18b, 18c, and molten asphalt is added to produce an asphalt mixture. By storing the heated aggregate according to particle size in the storage bins 18a, 18b, 18c, . . . in this way, an asphalt mixture having a desired composition can be manufactured.

In addition, satellite plants 18a, 18b, 1
The heated aggregate stored in 8c is not coated with asphalt, but if the aggregate is dry during transportation and storage and dust is scattered, which is undesirable from a pollution standpoint, an asphalt plant may be used. It is preferable to add a small amount of molten asphalt to the heated aggregate in the mixer 13 of No. 1 to prevent dust from scattering.

As described above, in the present invention, a known asphalt plant is used as the main plant, satellite plants are installed in several locations apart from the asphalt plant, and in the satellite plants, the aggregate heated in the asphalt plant is mixed according to its composition, or In addition to providing large capacity storage bins for keeping warm storage for each particle size, the system is also equipped with measuring tanks and mixers.
Since only measuring and mixing is performed, the asphalt plant does not have high-noise generating equipment such as burners and exhaust fans, so it can be installed in areas where noise pollution is a problem in the city center, and we decided to use this satellite plant. Therefore, it is possible to expand the asphalt mixture supply range of the asphalt plant, and it also has various practical benefits such as being able to ship asphalt mixture from the satellite plant even at night when it is difficult for the asphalt plant to operate. .

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an asphalt plant and a satellite plant used in the method of the present invention. 1... Asphalt plant, 2... Dryer, 8... Storage bin, 17... Satellite plant, 18a, 18b, 18c... Storage bin, 19
... Vertical conveyance device, 20 ... Distribution chute, 21
a, 21b, 21c... aggregate measuring tank, 25... stone powder measuring tank, 26... asphalt measuring tank.

Claims (1)

[Scope of Claims] 1. A predetermined amount of heated aggregate is measured based on the composition of the asphalt mixture from a storage bin in which heated aggregates of an asphalt plant for producing an asphalt mixture are stored according to particle size, and then mixed in a mixer. This heated aggregate is transported to a satellite plant located apart from the asphalt plant, where it is stored in storage bins according to its composition while being kept warm, and when asphalt mix is required, a predetermined amount of heated aggregate is transferred from the storage bin with the desired composition. A method for producing an asphalt mixture using a satellite method, characterized in that the asphalt mixture is manufactured by weighing and mixing while adding molten asphalt in a mixer provided at a lower level. 2. Take out the heated aggregates according to particle size from the storage bins that store heated aggregates according to particle size from the asphalt plant that produces the asphalt mixture, and transport the heated aggregates to a satellite plant installed apart from the asphalt plant to determine the particle size. The asphalt mixture is stored separately in storage bins while being kept warm, and when the asphalt mixture is required, a predetermined amount of heated aggregate is weighed from each storage bin based on the desired composition and mixed while adding molten asphalt in a mixer installed below. 1. A method for producing asphalt composite material by a satellite method, which is characterized in that the asphalt composite material is produced by a satellite method.