The asphalt processing dedicated Bitumen colloid mill adopts heavy-duty industrial thickened body structure, high-temperature resistant special mechanical seal, wear-resistant alloy rotor and stator assembly and independent high-temperature heat dissipation system. It can operate stably for a long time under harsh working conditions such as high temperature, strong viscosity and micro solid particle mixing, and is truly a special supporting equipment oriented to the whole asphalt industrial production line.
Core Processes:
Preheating: The asphalt is heated to a certain temperature to increase its fluidity and facilitate emulsification.
Adding Emulsifier: An appropriate amount of emulsifier is added to the asphalt, and the emulsifier dissolves at high temperature.
Emulsification: After the asphalt and emulsifier are mixed, an emulsion is formed through the shearing action of a bitumen colloid mill.
Cooling: The emulsified asphalt emulsion is cooled to the working temperature.
Core Working Principle of Bitumen Colloid Mill in Asphalt Production
The efficient and stable performance of the industrial bitumen colloid mill comes from its scientific and reasonable pure mechanical physical processing principle, no damage to the inherent physical and chemical properties of bitumen materials, and fully compliant with environmental protection production requirements. The whole working process is divided into three continuous closed links, with stable operation and no material leakage.
High-temperature feeding and primary pre-mixing
The heated and melted liquid original bitumen, together with quantitatively proportioned SBS modifiers, rubber powder, emulsifiers and anti-aging additives, is automatically transported to the closed feeding bin of the bitumen colloid mill through the heat-preservation pipeline. The equipment is equipped with a constant-temperature preheating cavity, which can always maintain the fluidity of high-viscosity bitumen, avoid material cooling and solidification blockage, and ensure the smooth progress of subsequent fine processing procedures.
High-shear ultra-fine grinding and dispersion
This is the core functional of the whole equipment. The precision alloy rotor rotates at a constant high speed, forming a micron-level ultra-narrow gap with the fixed stator. All bitumen mixed materials are forced to pass through the gap instantly, and instantly suffer strong mechanical shear.Large-particle modifiers and rubber aggregates are instantly crushed into uniform micron-level ultra-fine particles, which are fully dispersed in the bitumen base liquid to avoid particle agglomeration and sedimentation.
Uniform emulsification and finished material output
After high-shear grinding, the bitumen material forms a highly uniform and stable integrated mixed fluid. The whole processing process is fully enclosed and continuous. The finished modified bitumen or emulsified asphalt is directly output to the heat-preservation storage tank for standby. The processed finished asphalt has uniform texture, stable viscosity, good low-temperature crack resistance and high-temperature rutting resistance, and fully meets national and international road construction material acceptance standards.
Key Structural Features of Heavy-Duty Industrial Bitumen Colloid Mill
Wear-resistant alloy rotor and stator core assembly
The grinding core is made of high-chromium high-hardness alloy integral forging and molding, with super wear resistance and high-temperature deformation resistance. The tooth groove design is optimized for asphalt fluid dynamics, which can greatly improve the shearing and grinding efficiency, effectively reduce equipment operation resistance, and save overall plant power consumption by more than 15%. It is not easy to wear after long-term processing of mixed materials containing tiny particles, and the replacement cycle of wearing parts is long.
High-temperature resistant integral mechanical sealing system
Aiming at the problem of easy aging and leakage of ordinary seals in high-temperature bitumen environment, the equipment is equipped with multi-layer composite high-temperature resistant mechanical seals, with built-in automatic circulating cooling water channel. It can work stably for a long time in a high-temperature environment of 180°C–220°C, completely avoid material leakage, oil seepage and safety hazards, and ensure the safety and environmental protection of the production workshop.
Integrated heat preservation and noise reduction heavy-duty body
The pump body adopts thickened cast steel integral welding structure, with external professional thermal insulation and noise reduction protective layer. It not only reduces the heat loss of high-temperature bitumen and saves heating energy consumption, but also effectively reduces the mechanical noise of on-site operation, improves the working environment of workers, and meets the environmental protection assessment standards of industrial production workshops.
Main Advantages of Using Bitumen Colloid Mill for Asphalt Processing
- Ultra-fine particle treatment, stable asphalt quality: Bitumen colloid mill can grind all modifier particles to 2–5 microns, with uniform dispersion, no precipitation and no delamination. The produced modified asphalt has strong adhesion, good water resistance and long road service life.
- Strong adaptability to high-viscosity media: It can cope with various high-viscosity bitumen, rubber asphalt, recycled asphalt and special heavy-duty asphalt materials, and is not affected by material temperature and viscosity fluctuation.
- Energy saving and high efficiency, continuous automatic production: One-time online continuous processing, no need for repeated circulating stirring. The whole line is automatically controlled, with less manual intervention, high output per hour and greatly improved overall production efficiency.
- Easy maintenance and low operating cost: The structural design is simple and reasonable, wearing parts are few, and disassembly, cleaning and replacement are convenient.
- Wide compatibility with production lines: Bitumen colloid mill can be perfectly connected with new asphalt mixing plants, old plant renovation production lines, mobile asphalt processing equipment and other supporting use, without large-scale transformation of the original workshop.
Main Application Scenarios of Industrial Bitumen Colloid Mill
The industrial bitumen colloid mill covers the whole industrial chain of asphalt raw material deep processing and road engineering supporting production, with wide application and strong scene matching.
It is widely used for SBS modified bitumen production, cationic emulsified asphalt processing, rubber powder modified asphalt grinding, high-viscosity waterproof asphalt preparation, highway surface micro-surface material processing, municipal road anti-crack asphalt slurry production, and recycled old asphalt regeneration and fine processing. At the same time, it is also suitable for supporting production in special scenarios such as bridge deck waterproof coating raw material pretreatment and tunnel engineering special sealing asphalt processing.
