Globular asphalt granulating device and granulating method

Abstract

The invention relates to the manufacturing technology of asphalt, in particular to a globular asphalt granulating device and a granulating method. The device comprises a vertical rotating shaft installed on a rack, the rotating shaft can be driven to rotate by a power plant, the lower end of the rotating shaft is connected with the center of a centrifuge boiler of which the surface of the inner chamber is hemispheric, and can drive the centrifuge boiler to rotate; an asphalt discharge hole is arranged on the side above the centrifuge boiler and is connected with an asphalt storage device usedfor storing liquid asphalt by a section of thermal insulation discharge tube coated with thermal insulation material. The equipment of the invention has simple structure, low manufacturing cost, low operation cost and small pollution for technical operation process, can regulate prilling grain diameter by controlling centrifugation revolution and raw material flow, has high prilling speed and good quality and is suitable for requirements of mass production.

Description

technical field [0001] The invention relates to asphalt manufacturing technology, in particular to a spherical asphalt granulation device and a granulation method. Background technique [0002] In the refractory material manufacturing and foundry industry, traditionally use unshaped granular asphalt and powdered asphalt as raw materials. The disadvantage is that the asphalt raw material has poor fluidity and is not easy to mix evenly, resulting in low production batching accuracy and affecting product quality, especially in precision casting. Among them, spherical asphalt with better fluidity has begun to replace amorphous granular asphalt and powdered asphalt and has been gradually adopted. [0003] There are three main methods for making asphalt pellets: 1. hot air injection method; 2. drum water cooling method; 3. phenolic resin thermal stirring and dispersing method. These three methods all have relatively large deficiencies: first, the hot air injection method requires...

AI Technical Summary

Problems solved by technology

These three methods all have relatively large deficiencies: first, the hot air injection method requires a prilling tower more than ten meters high, which requires a huge investment, and requires 180°C hot air to assist in pelletizing, resulting in a large amount of energy waste and exhaust gas. The amount is large, difficult to handle, and serious pollution; second, the production process of the drum water cooling method is complicated, waste water is generated, the product needs to be dried, forming secondary pollution, and the investment is relatively large; third, after melting with phenolic resin and The method of mixing and dispersing asphalt has high production cost, complicated process and small output, which is not suitable for mass industrial production and has poor economic efficiency.

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