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Asphalt modification processing system and method for asphalt additives

An asphalt additive and modified asphalt technology, applied in the field of asphalt products, can solve the problems of too brittleness, too soft roads, and the asphalt composition cannot meet the performance standards and regulations.

Inactive Publication Date: 2014-05-21
HERITAGE RES GROUP LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Conventional asphalt compositions generally do not meet all performance standards and regulations
Failure to meet such performance standards and regulations can result in roads that are too soft at high temperatures and too brittle at low temperatures

Method used

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  • Asphalt modification processing system and method for asphalt additives
  • Asphalt modification processing system and method for asphalt additives

Examples

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Embodiment

[0029] In the following examples, an attritor comprising a vessel with a heating mantle through which hot oil circulates in order to keep the product mixed above the softening point was used. The grinding media is made of hard stainless steel balls with a diameter of 3 / 8 to 1 / 4 inch. Add the mixture to be processed in the container until the container is about 3 / 4 full. The mixing rod inside the container has multiple arms on different levels of the axis of rotation in the center of the container. When the mixing rod rotates at high rpm above about 450 rpm, it causes the mixture to vortex and generate shear and impact forces on the material inside the container. Unmodified bitumen and additives are added to the attritor individually or together as a combined slurry. After treatment in the attritor, the resulting material is a homogeneous mixture of feed material, which according to the invention includes a modified bituminous binder.

[0030] In these examples, asphalt bind...

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Abstract

A process method for producing modified asphalt binder compositions that involves mixing an asphalt binder and at least one asphalt additive and / or asphalt modifier in a stirred ball mill so as to subject the mixture to mixing, shearing, impacting and grinding.

Description

technical field [0001] The present invention generally relates to asphalt products comprising modified asphalt compositions. More particularly, the present invention relates to methods and apparatus for forming modified asphalt compositions, including mixing systems and processing methods for producing enhanced performance asphalt compositions for use in asphalt products. Background technique [0002] Paving asphalt compositions are conventionally manufactured using asphalt pastes derived from crude oil. The price of bitumen and crude oil has increased rapidly in recent years. In addition to the increase in the price of these base components, there is also a considerable increase in the manufacturing costs involved in combining the additives with the asphalt binder due to the cost of the additives and the time and energy required to incorporate these additives into the asphalt binder. [0003] Asphalt binders used in paving compositions must meet performance standards and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08J3/20C04B26/26E01C3/02E01C7/14
CPCC08K3/346C08L95/00C08L2555/22C08L2555/34C08L2555/52C08L2555/80E01C19/1004E01C19/104C08L101/00B02C17/00C04B26/26E01C7/20
Inventor C·百富勤A·雷德曼张希舜A·J·克里基
Owner HERITAGE RES GROUP LLC
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