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Continuous and forced combined asphalt mixing production method

A kind of asphalt mixing and combination technology, which is applied in the direction of mixer, pretreatment control, mixer accessories, etc., can solve the problems of polluting the environment, increasing the company's operating costs, wasting time and electric energy, etc.

Active Publication Date: 2020-04-28
SHANGHAI SHISHEN IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the general hot-mix treatment process, since the open flame directly contacts the recycled materials, the hot-mixed recycled materials will produce a large amount of waste asphalt fumes at this time, and the above-mentioned asphalt fumes will contain a large amount of volatile components (the above-mentioned components come from waste Asphalt material), at this time, a large amount of volatile components are produced, and if they are directly discharged into the air, they will pollute the environment; if they are treated by an exhaust gas absorption device, due to the large amount of volatile components produced, a high-power exhaust gas absorption device needs to work for a long time to complete The treatment of exhaust gas, if things go on like this, consumes a lot of time and electric energy, which increases the operating cost of the company

Method used

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  • Continuous and forced combined asphalt mixing production method
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  • Continuous and forced combined asphalt mixing production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0073] Embodiment 1-1: a kind of asphalt mixing production method combining continuous type and forced type, such as figure 1 shown, including the following steps:

[0074] In step one,

[0075] A1. According to the grading requirements, the new material is initially batched at room temperature to obtain cold aggregate, wherein the cold aggregate contains 18-31.5mm crushed stone, 10-20mm crushed stone and 5-10mm crushed stone, and The weight ratio of 18-31.5mm gravel, 10-20mm gravel and 5-10mm gravel is 21:18:18.

[0076] A2. The cold aggregate is discharged into the inner cylinder of the double-layer split-type drying drum for combustion. When the temperature of the double-layer split-type drying drum is raised to 100°C, the cold aggregate is first dried, and then the double-layer split-type drying drum is continuously raised. The temperature of the split drying cylinder is 200°C, and the cold aggregate is heated to 180°C to obtain hot aggregate.

[0077] A3. The hot aggre...

Embodiment 2-1

[0094] Embodiment 2-1: a kind of asphalt mixing production method combining continuous type and forced type, comprising the following steps:

[0095] In step one,

[0096] A1. According to the grading requirements, the new material is initially batched at room temperature to obtain cold aggregate, wherein the cold aggregate contains 18-31.5mm crushed stone, 10-20mm crushed stone and 5-10mm crushed stone, and The weight ratio of 18-31.5mm gravel, 10-20mm gravel and 5-10mm gravel is 22:20:19.

[0097] A2. The cold aggregate is discharged into the inner cylinder of the double-layer split-type drying drum for combustion. When the temperature of the double-layer split-type drying drum is raised to 110°C, the cold aggregate is first dried, and then the double-layer split-type drying drum is continuously raised. The temperature of the split-flow drying cylinder is 210°C, and the cold aggregate is heated to 190°C to obtain hot aggregate.

[0098] A3. The hot aggregate is temporarily...

Embodiment 3-1

[0114] Embodiment 3-1: a kind of asphalt mixing production method combining continuous type and forced type, comprising the following steps:

[0115] In step one,

[0116] A1. According to the grading requirements, the new material is initially batched at room temperature to obtain cold aggregate, wherein the cold aggregate contains 18-31.5mm crushed stone, 10-20mm crushed stone and 5-10mm crushed stone, and The weight ratio of 18-31.5mm gravel, 10-20mm gravel and 5-10mm gravel is 23:25:20.

[0117] A2. The cold aggregate is discharged into the inner cylinder of the double-layer split-type drying drum for combustion. When the temperature of the double-layer split-type drying drum is raised to 120°C, the cold aggregate is first dried, and then the double-layer split-type drying drum is continuously raised. The temperature of the split-flow drying cylinder is 220°C, and the cold aggregate is heated to 200°C to obtain hot aggregate.

[0118] A3. The thermal aggregate is tempora...

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Abstract

The invention discloses a continuous and forced combined asphalt mixing production method, and belongs to the technical field of concrete processing. The method comprises the following steps: heatingcold aggregate to obtain hot aggregate, and carrying out hot mixing and / or cold mixing on a milling material to obtain a recycled material; mixing the hot aggregate, the recycled material, a powder and asphalt to obtain a premix; temporarily storing the premix in a pre-stirring storage bin, then allowing the premix to enter a forced stirring cylinder and be stirred, and temporarily storing an obtained finished product material in a finished product storage bin; and unloading the finished product material to a storage tank of a finished product conveying vehicle in a finished product material loading area. Generated asphalt flue gas and water vapor are introduced into a drying cylinder and undergo secondary incineration; collected dust enters a tail gas absorption and purification device and is purified; and the collected flue gas and air are introduced to a combustor part, and are used as a combustion-supporting gas. Direct combustion of the milling material by open fire is avoided; and the hot aggregate is slowly premixed with the recycled material, the powder and the asphalt, so the mixing efficiency is high, asphalt smoke leakage can be avoided, heat energy is utilized, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention belongs to the technical field of concrete processing, and more specifically relates to a continuous and forced asphalt mixing production method. Background technique [0002] Asphalt concrete pavement has good driving comfort and excellent performance, fast construction speed and low maintenance cost. For this reason, most roads of all grades use asphalt pavement. Hot-mix asphalt mixture is the main method of asphalt concrete pavement construction at present, and it is also the key joint of asphalt concrete pavement construction. Precise, uniform pavement mix material. [0003] At present, the existing asphalt mixture is obtained by mixing new materials and recycled materials in proportion, and most of the recycled materials are obtained by using waste asphalt materials through hot mixing or cold mixing. [0004] In the general hot-mix treatment process, since the open flame directly contacts the recycled materials, the hot-mixed recyc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/22E01C19/10
CPCE01C7/22E01C19/1004E01C2301/50E01C19/1036B28C7/0023B28C7/0422B28C5/003C04B26/26E01C19/08B01F33/8052B01F27/116B01F35/90B01F33/8364B01F2035/99B01F2101/38
Inventor 时兆武时光胜
Owner SHANGHAI SHISHEN IND & TRADE CO LTD
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