Different Types of Hot Mix Asphalt Plants for Sale

 The hot mix asphalt plant for sale is a complete set of equipment used to produce asphalt concrete for road paving. Asphalt mixing plant is composed of asphalt mixer, screening equipment, aggregate bin, drying system, heating system, asphalt supply system, aggregate weighing system, insulation system, etc.

The stationary asphalt mixing plant is that the equipment is fixed at the working place. It is mainly suitable for urban road construction and centralized engineering construction. The mobile asphalt plant is a mobile road construction machine that produces asphalt mixture. One of its main kinds are mobile asphalt drum mix plant.

Their mobility allows for easy transport between job sites without the need for multiple installations. This feature saves time and money while increasing productivity. In addition, mobile asphalt plants allows quick setup and efficient relocation according to project requirements. Because its silo and mixing drum are equipped with tires.

The continuous asphalt drum mixing plant is mainly composed of cold aggregate supply system, drying drum, continuous mixer (optional), combustion system, dust removal system, finished asphalt storage bin, asphalt supply system, control system, etc. The mobile drum mix plant is very different from batch type asphalt mixing plant. It produces the asphalt mixture in the drum, while also continuously drying the aggregate.

There are two different types of continuous mixing plants: co-current heating drum mixing plants (the simplest and cheapest mixing plants) and counter-current heating mixing plants (from the point of view of heat exchange, this type of mixing plant more efficient). Like a conventional hot mix asphalt plant, the bitumen produced in the dry mixing drum will be sent to a storage silo and then unloaded into a transport vehicle before being transported to the road construction site.

FEATURES OF MOBILE DRUM MIX PLANT

1. The modular design of mobile asphalt drum mixing plant can make the installation and transportation of the equipment more convenient and quick.

2. The mixing cylinder is driven by constant power. Such equipment makes mixing easy and the equipment is more reliable.

3. The vibrating screen driven by the vibrating motor adopts imported equipment, which greatly improves the work efficiency and reduces the failure rate of the equipment.

4. The mobile drum mix plant is to place the bag dust collector on the top of the drum and put it in the drying state. The advantage of this design is that it can greatly reduce the loss of heat, save fuel and save space.

Original source: https://www.concretebatchplanthm.com/a/different-types-of-hot-mix-asphalt-plants-for-sale.html

How to Debug Hot Mix Asphalt Plant for Sale

 The hot mix plant is a main equipment for road construction. The roads can greatly improve the convenience of transportation and drive economic development, therefore the road construction keeps ongoing in many countries. The demand for hot mix asphalt plant for sale also keeps increasing. After buying ,how to debug it?

After the asphalt plant is installed, before it is put into production, a series of inspections and adjustments must be made to the rationality of the equipment assembly, operational flexibility, and operational reliability. At this stage, the various systems of the equipment must be debugged separately. Make sure it well prepared for trial production.

1. Debugging of small bucket car. Try to buy equipment with frequency conversion speed control system. In this way, it is convenient to adjust the speed of the small bucket car to: Slow start-normal speed operation-5 m deceleration- feeding port stopping, forming a stable operation. The accident rate is greatly reduced and the reliability is greatly improved.

2. Debugging of cold silos. The cold silo is a device for supplying cold aggregates. The opening of the door of each silo should be consistent with the supplied materials and production mix ratio, so as to reduce the occurrence of lack and overflow.

Whether the supply can be guaranteed will not only affect the production capacity of the equipment, but also affect the measurement accuracy of aggregates. Therefore, first adjust the opening of the hopper door according to the proportion of each specification material, and then calibrate the relationship between the belt speed and the supply capacity.

3. Debugging of drying drum. The main thing is to run smoothly. This requires that the working currents of the four independently driven motors must be consistent. If they are not consistent, it can be adjusted through the adjustment of the oil level.

4. Calibration of the metering system. Before the asphalt plant China starts to work, the metering system should be calibrated. The aggregate scale, asphalt scale and mineral powder should be calibrated separately, and the analog meter display value should be adjusted to the reading of the programmable controller.

If you buy hot mix asphalt plant from Haomei Machinery, we have professional team to help you install and debug. Welcome to leave message below to get a quote.

Original source: https://www.haomei-machinery.com/a/how-to-debug-hot-mix-asphalt-plant-for-sale.html

How to Maintain Hot Mix Asphalt Plant For Sale

 The hot mix asphalt plant for sale is of complicated system and has a harsh operating environment. To ensure that there are fewer equipment failures, the crew need to do the regular inspection and maintenance well.

Daily maintenance:

1. Lubricate the equipment according to the lubrication schedule.

2. Check the vibrating screen according to the maintenance instructions.

3. Check for leaks in the gas pipeline.

4. Check if the pipes for the overflow of the large particles is blocked.

5. After stopping the equipment, clean the discharge door of the mixing tank.

6. Check and tighten all bolts and nuts.

Weekly maintenance:

1. Lubricate the equipment according to the lubrication schedule.

2. Check the wear and damage situation of all conveyor belts. If the wear is severe, repair or replace them in time.

3. Check whether the induced draft fan is blocked by dust. Too much dust can cause violent vibration and abnormal bearing wear.

4. If the mixing tank blades, mixing arm and shaft seal are worn out, adjust or replace if necessary.

Monthly maintenance:

1. Lubricate the stationary asphalt plant according to the lubrication schedule.

2. Check the tightness and wear of the chain, hopper, and sprocket of the hot material hoist.

3. Check the wear situation of the material level indicator device in the hot aggregate bin.

4. Check the burner according to the burner's operating instructions.

The maintenance every three month:

1. Lubricate the equipment according to the lubrication schedule.

2. Check the wear of the inside of the hot hopper and the discharge door.

3. Check the damage of the screen support spring and the bearing seat, and adjust according to the instructions if necessary.

Maintenance every six months:

1. Lubricate the batch type hot mix plant according to the lubrication schedule.

2. Replace the mixing tank blades and bearing grease.

3. Carry out lubrication maintenance for the whole motor.

Annual inspection and maintenance:

1. Lubricate the equipment according to the lubrication schedule.

2. Clean the gear box and gear shaft device and fill it with the corresponding lubricant.

Original source: https://www.haomei-machinery.com/a/how-to-maintain-hot-mix-asphalt-plant-for-sale.html

How to Build An ECO-friendly Hot Asphalt Plant

The environmental pollution such as smoke, dust, noise and high energy consumption generated by the hot asphalt plant during the production process has always been criticized. Asphalt batching plant with with large pollution and high energy consumption has been ordered to shut down in many countries. How to build an ECO-friendly hot mix asphalt plant for sale? There are some measures for dust prevention.

1. Site management

Site management can reduce dust emissions and improve the comfort of the plant. Sprinkle water on the roads and try to reduce the dust caused by the loader and truck in the dry weather. Negative pressure devices are provided in those places including the screening, metering, mixing and hot aggregate bin.

2. The dust removal system of the cold storage

The dust of asphalt hot mix plant is mainly produced by cold material feeding and heating. The cold aggregate feeding belt is equipped with a separate dust removal system. During production, the fan is turned on and the pulse dust collector starts working.

3. Dust removal system of the mixing tower

The mixing tower is equipped with negative pressure devices. The dust removal system adopts atmospheric back blowing dust removal and two-stage dust removal, which effectively prevents the phenomenon of dust overflow.

4. A closed management of the mixing tower

In order to control the problem of disorderly discharge of dust, the mixing tower is completely closed and treated with negative pressure. There is also a temporary overflow storage bin for the centralized treatment when the bin is full, effectively preventing the dust caused by continuous overflow.

5. Closed storage of cold materials
The cold aggregate is stored in a closed plant or silo. The fully enclosed design of the material yard prevents the dust from escaping outwards, and also prevents the aggregates from being exposed to rain to increase the moisture content of the aggregates, thus reducing the additional energy consumption caused by drying the aggregates.

It is certain that for the ECO-friendly hot mix asphalt plant, they are all equipped with advanced bag dust removal system.

Original source: https://www.haomei-machinery.com/a/how-to-build-an-eco-friendly-hot-asphalt-plant.html

The Production Quality Control of Hot Mix Asphalt Plant

It is necessary to strengthen the installation and maintenance of the hot mix asphalt plant for sale, thus ensuring the safe and efficient operation of the whole plant. It also will ensure the quality of the asphalt mixture and improve its own economic benefits. How to control the production quality?

1. Minerals

In the construction process, the coarse ore material is the gravel of which the size is from 2.36mm to 25mm. During the construction process, the coarse aggregate must be cube particles after being crushed.

2. Asphalt

Before using, all indicators of the asphalt must be checked to ensure its quality. When selecting asphalt grades, be sure to investigate the local climate. When the temperature is low, the ones with high asphalt grades should be selected, mainly because the high-grade asphalt has better crack resistance when paved.

3. Aggregate

Aggregate is the main factor that affects the strength of asphalt concrete. The key part that controls the aggregate grading is the vibrating screen. The mud content of the aggregate will also affect the adhesion performance of the aggregate and asphalt and the stability of the mixture. Therefore, before mixing the mixture, the muddy aggregate should be cleaned.

4. Temperature control

The mixing temperature determines the viscosity of the asphalt. At high temperatures, the asphalt has a high fluidity, so that the aggregate can be completely wrapped. However, if the mixing temperature is too high, the aging of asphalt will be very serious.

Generally, the mixing temperature of the hot asphalt mixture is 130～160℃, and the modified asphalt mixture temperature should be 10～20℃ higher than that of the ordinary asphalt mixture.

5. Mixing ratio

The mix ratio of the asphalt is determined by numerous test in the laboratory. During the production, each material should be feed in a certain order. During the mixing process of hot mix asphalt plant, all aggregate particles should be wrapped by the asphalt. The mixing time should be controlled between 45-90 seconds, and must be checked at any time.

As a big asphalt batching plant manufacturer, Haomei Machinery has made several innovative improvement in aggregate grading and asphalt weighing and spraying, thus ensuring the asphalt mixture in accordance with strict mixing ratio.

Original source: https://www.concretebatchplanthm.com/a/the-production-quality-control-of-hot-mix-asphalt-plant.html

What Are The Key Parts of Hot Mix Asphalt Plant for Sale

Hot mix asphalt plant for sale is a complete set of equipment for mass production of asphalt concrete,which is widely used to build highways, municipal road, airport and ports.

Asphalt Hot Mix Plant is mainly made up of batching system, drying system, combustion system, hot material lifting, vibrating screen, hot material storage bin, weighing mixing system, asphalt supply system, powder supply system, dust removal system, finished product bin and control system, etc.

There are two key parts: asphalt mixing system and electrical control system. Take Haomei asphalt hot mix plant for example. The main structure of the mixing machine adopts spiral single-arm mixing technology and integrated heat exchange technology, with high efficiency, energy saving and environmental protection performance as the design goals.

The two shaft-mounted geared motors are driven independently, the gears are synchronized, and the work is more stable. At the same time, key components such as wear-resistant linings fully take into account their versatility and the application of expansion interfaces, the product has a longer life, and upgrades and expansions are faster and more convenient.

In terms of electrical control, We adopt DCS control structure framework, and develops and applies a special management system EXP2010 to further improve the intelligence level of the whole asphalt hot mixing plant.

To meet market demand, besides the design of light and heavy dual-use burners, this asphalt mix plant can also be equipped with coal and natural gas combustion systems, which can effectively save energy and operating costs.

As hot mix asphalt plant manufacturers, we adhere to step further in front of others to provide the more advanced and Eco-friendly asphalt batch plant.

Original source: https://www.haomei-machinery.com/a/what-are-the-key-parts-of-hot-mix-asphalt-plant-for-sale.html