Asphalt mixing equipment is a complete set of equipment used to mass produce asphalt mixtures. It is necessary equipment for building highways, grade roads, municipal roads, airports, and ports. The model and production capacity of the mixing equipment are usually determined based on the working conditions, construction requirements, project volume, and construction period of the asphalt pavement.Asphalt mixing equipment is divided into forced intermittent type and continuous type according to the construction process; and divided into fixed type and mobile type according to the transportation method.
1. "Fixed asphalt mixing plant" or "mobile asphalt mixing plant"?
1) If the construction site is fixed, select "fixed", otherwise select "mobile". The output of mobile type is relatively small and it is not widely used in China. If the amount of work at the same construction site is small + frequent transfer, select "mobile", otherwise select "fixed".
2. "Forced intermittent asphalt mixing equipment" or "continuous asphalt mixing equipment"?
The forced intermittent main engine system is complete, and a "single bucket scale" is used for intermittent geothermal aggregate measurement; the continuous main engine has no "screening system" and no separate mixing system, and uses a belt scale for continuous cold aggregate measurement. Therefore, it has a simple structure, fewer systems, and is easy to install and maintain, but it has high requirements for aggregate feeding stability:
1) If the source, classification quality, moisture content, and dust rate of the aggregate are stable, the continuous type can be selected, otherwise it is recommended to select the forced intermittent type;
2) If the mixing station site allows the construction of higher buildings, then select the "forced intermittent type", otherwise select the "continuous type";
3) The owner first considers the product procurement cost and maintenance and operation cost. The procurement cost and maintenance and operation cost of the "continuous type" are relatively low, but the specifications and grades of aggregates and feeding stability are very high;
4) When adding recycled materials to the "forced intermittent type", an additional "regeneration system" must be added, and the proportion of recycled old materials added is usually no more than 30-50%; the "continuous type" usually has its own regeneration function, and the proportion of recycled materials added can usually reach 50%.
Products Description3. Does the "asphalt mixing plant" need to be equipped with a regeneration system?
1) The government requires that "old materials" recycling must be implemented and is a basic condition for owners to bid for pavement projects, so a regeneration system needs to be configured;
2) The owner considers that it will be used for pavement maintenance construction now or in the future, so a regeneration system needs to be configured;
3) The owner considers the integrity and environmental protection of the mixing equipment functions, and needs to configure a regeneration system to adapt to more pavement construction requirements;
4) When configuring a "regeneration system", you can choose "intermittent" + "regeneration system", or you can choose "continuous" with a self-contained regeneration system.
4. What kind of regeneration system does the "asphalt mixing plant" need to be equipped with?
1) The regeneration system configured with "forced intermittent" cannot be constructed alone and must be configured on the main machine before it can be used; the asphalt mixing equipment configured with "regeneration system" is called "original regeneration integrated asphalt mixing equipment"; the asphalt mixing equipment configured with "normal temperature regeneration system + hot regeneration system" is called "original regeneration integrated (dual system)"; the drying drum of the "asphalt mixing equipment" can be equipped with "double drums" to achieve "hot regeneration function", which is called "double drum original regeneration integrated asphalt mixing equipment".
2) According to whether the "recycled old materials" are heated according to the owner's construction process, choose "normal temperature" or "hot" regeneration;
The "normal temperature regeneration system" is not equipped with "recycled material heating drum", the cost is low, and the addition ratio is low, usually not exceeding 15%; if the addition ratio is increased, the higher the heating humidity of the original materials, the higher the requirements for asphalt and bags;
The "hot regeneration system" is equipped with "recycled material heating drum" + "smoke treatment system", the cost is high; the proportion of recycled old materials added is usually 10%-30%, generally not more than 50%, and the addition ratio has little effect on asphalt temperature and bags.