Sand In The Highway Aggregate Washing Method

2010-01-31 15:12:52 highway pavement surface layer of aggregate cleanliness and good

adhesion performance is to improve the quality of asphalt concrete pavement important factor.Clean pavement surface materials to reduce the pollution of road construction on the environment, reduce the overall cost of the pavement engineering, economic and social benefits significantly.The pavement surface aggregate production and processing washing process has been commonly used in many highway projects. The pavement aggregate washing method is characterized as follows: 1.Aggregate is broken by three or four screening can reduce the weak particles content and flakiness content, improve the quality of aggregate.Two.Sand with high-power dust removal equipment, hairdryer and set in the mechanism of sand discharge port cloth, erection of steel sheds, greenhouses hanging based around shade net, the top of the set amount of water spray facilities spray, can effectively reduce the dust and the surrounding environmental pollution.3.The arrangement of high pressure in the top of the shaker, sprinkler pipe network can be all-round, fast, effective cleaning of the aggregates, reducing the following particle content of 0.075mm.4.Lime washing aggregates, and can improve the surface cleanliness and surface alkaline aggregate and enhance the rotary drier for sale adhesion of the asphalt.5Using five sedimentation tanks technology, recycling the rinse water, to ensure that clean water can save water resources. The most important aspects ball mills of the washing method of the pavement aggregate stone broken stone graded to form Raymond Mill china elongated particle content, the proportion of broken gravel crushing surface angularity, mud content, sand equivalent and methylene blue value, fine powder content are closely related with the stone crushing process. Stone crushing process is as follows: 1.The three-stage stone crushing process and the stones through the PE600900 jaw crusher stone crusher broken and then into the PF1214 type crusher, impact can once again broken stones, and then by Sand shaping, can effectively reduce the flakiness content Make sure that the shape of the jaw crusher aggregates close to cube.Two.In order to effectively reduce road aggregates the content of the soft stone, aggregates, impact crusher, it should be # 1 shaker screen 2.36mm below the stone chips, stone chips can be used in water-stable base material.3.VI Sand plastic stone with the vibration of the # 2 sieve screening out more than the maximum size of aggregate, and through the conveyor belt, will return to the stone in the solution of small use in the Sand, you can avoid the large particle sets material waste. Special impact of sand and dust production mechanism of the crusher sand, shape regularity, surface roughness, angularity, the thickness of the aggregate between meshing tightly, structural stability, friction resistance.The process of sand, to generate large amounts of dust, inadequate protection can cause serious environmental pollution, the actual production should note the following: 1.The impact crusher capacity, configuration power is relatively rich dust removal equipment, processing suction, to reduce the dust content in the mechanism sand.Two.Hairdryer jaw crusher cloth set in the mechanism of sand discharge port and erection of steel sheds and shade net, hanging around the steel shed located at the top set the sprinkler head, to reduce dust pollution impact on the surrounding environment

by: zzposuiji

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