Hot recycling method of asphalt mixing materials and hot recycling device of asphalt mixing materials

Abstract

Provided are a hot recycling method of asphalt mixing materials and a hot recycling device of asphalt mixing materials. The hot recycling method comprises the following steps: pretreating and calculating new stone powder; pretreating and calculating new asphalt; pretreating and calculating new construction aggregates, pretreating and calculating waste asphalt, placing the calculated waste asphalt into a secondary stirring cylinder, placing reclaiming agents into the secondary stirring cylinder, and evenly stirring the waste asphalt and the reclaiming agents; and placing the waste asphalt evenly mixed with the reclaiming agents and the calculated new stone powder, new asphalt and construction aggregates into a primary stirring cylinder and evenly stirring the mixture. Compared with the prior art, the waste asphalt is firstly placed in the secondary stirring cylinder to be evenly mixed with the reclaiming agents before the waste asphalt is placed in the main stirring cylinder, accordingly, the reclaiming agents and the waste asphalt are evenly mixed in advance, the stirring time of the main stirring cylinder is shortened, and production capacity of the whole device is improved.

Description

technical field [0001] The invention relates to an asphalt mixture plant mixing heat regeneration method and equipment thereof. Background technique [0002] In recent years, in order to respond to the national requirements on "building a conservation-oriented society" and "developing a circular economy", coupled with the increase in the price of petroleum and stone resources, road departments in various places have taken active actions, taking "sustainable development" as the With the goal of developing "green transportation", the recycling and reuse of old road asphalt materials has received new attention and attention. Many scientific research institutions and research institutions have begun to study and promote the recycling technology of old road asphalt materials. Among them, the plant-mixed heat regeneration technology is the most commonly used regeneration method in this type of technology. Common asphalt mixture plant mixing heat recycling equipment does not have...

AI Technical Summary

Problems solved by technology

In this process, the new aggregate, new asphalt, and stone powder must wait until the recycled material and regenerant are evenly mixed before being put into the mixing tank, which prolongs the time for all materials in the mixing process and reduces the overall production efficiency of the equipment.

At the same time, this process has another disadvantage: when the new asphalt and stone powder are put into the mixing tank, the new asphalt is not only attached to the surface of the new aggregate, but also attached to the surface of the recycled aggregate.

In this way, not only the new asphalt is wasted, but also part of the regenerant is also coated on the surface of the new aggregate, which makes the adhesion between the new aggregate and the new asphalt worse, thus affecting the road performance of the final mixture

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