A kind of equipment and process for preparing asphalt mixture

Abstract

A device and process for preparing asphalt mixture, including a primary cold batching metering and conveying system, a regenerative cold batching measurement and conveying system, a stirring system, a primary material drying and heating system, a powder supply system, a primary large bag dust removal system, and a primary cold batching conveying system District dust removal system, powder spraying system, asphalt supply system, asphalt tank flue gas treatment system, waste gas treatment system, finished material transportation and storage system. In the present invention, the primary drying drum is arranged above the stirring system, which avoids heat loss in the process of hot aggregate lifting in traditional equipment and saves energy; The powder can be transported to the recovery powder bin through the recovery powder screw conveyor, and there is no need to set up a powder elevator, which reduces the equipment cost. In addition, there is no need to set up the regeneration drying drum, the temporary storage bin for the regeneration hot material and the metering scale for the regeneration hot material, and the structure is simple, which avoids the problem of sticking materials in the regeneration drying drum that cannot be solved in the current industry.

Description

technical field [0001] The invention relates to the field of asphalt mixture production equipment, in particular to an equipment and process for preparing asphalt mixture. Background technique [0002] There are two main forms of asphalt mixture production equipment on the market: one is forced batch asphalt mixture mixing equipment; the other is continuous asphalt mixture mixing equipment. The forced batch asphalt mixture mixing equipment refers to a kind of sand and gravel material that is dried, heated, screened, and measured, and an appropriate amount of filler (stone powder) is added, and mixed with hot asphalt liquid according to a certain ratio to form an asphalt mixture. Equipment, when equipped with factory mixing heat regeneration equipment, it is also necessary to dry, heat, store and measure the recycled materials, and then put the measured recycled materials into the mixing tank and mix them with the original materials to form asphalt mixture; while the continuo...

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Problems solved by technology

[0003] However, whether it is a forced batch asphalt mixing plant or a continuous asphalt mixing plant, there are the following problems in the prior art: 1. The original drying drum is placed on the ground, and after being dried and heated by the drying drum The aggregate should be sent to the vibrating screen by the hoist for screening or to the mixing tank for mixing, and there will be a large heat loss in the process of hot aggregate transportation; 2. The original bag filter is placed on the ground, and the recovered powder needs to pass through the powder The material hoist is lifted to the powder tank, which increases the dust leakage point during the conveying process, increases the purchase cost of the powder hoist, and increases the failure rate of the equipment; 3. The equipped regeneration equipment uses a drying drum to dry the recycled material Dry heating, heated recycled materials need temporary storage for storage, and recycled materials tend to adhere to the drying drum and temporary storage after heating, and currently no cure has been found in the industry, which brings difficulties to the normal production of equipment many risks

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