What equipment is needed to build an environmentally friendly sand and gravel production line
In recent years, a variety of environmental protection concept has been deep into people's production and life in all areas, gravel plant owners are also paying more and more attention to the purchase of environmentally friendly equipment. So what equipment is needed to build an environmentally friendly gravel production line?
Environmentally friendly gravel production line should also be from the gravel production line must pass through the section of feeding, crushing, screening, conveying, screening, washing and so on.
1. Feeding, conveying stage
General use of vibrating feeder or belt conveyor. Vibrating feeder has a large feeding capacity, can be the natural fines of the first selection, with the primary screening and feeding of one of the functions. Belt conveyor is also used for feeding in small stone plant, which can convey materials to the primary breaking equipment with low speed and uniformity. Of course the belt conveyor is also like the blood vessel of the whole gravel plant, connecting each process in series or parallel to form a system of automatic processing of stone. It is necessary to pay attention to choose the width and length of the belt according to the transportation volume of materials in different sections, and at the same time to ensure that the dust density meets the requirements of local environmental protection policies.
2. Crushing and sand making stage
Jaw crusher, impact crusher, hammer crusher, cone crusher, sand making machine and other equipment are generally used. Users need to purchase suitable equipment according to the hardness and size of the materials to be processed.
At this stage, in addition to the production capacity of the equipment, material wear resistance, service life, finished product qualification rate and other basic performance, but also to see how the equipment to reduce dust pollution, noise pollution, reduce energy consumption and other environmental factors.
a. Jaw crusher: feed ≤ 1200mm, discharge 10-350mm, large crushing ratio, wide range of use, generally used as a primary crushing equipment.
b. Impact crusher: feed ≤ 800mm, discharge 0-40mm arbitrary adjustment, processing out of the stone granularity is very good, higher hardness of the stone can also be crushed.
c. Hammer crusher: feed ≤ 1200mm, discharge 0-80mm, the hardness of the stone is not high, the finished product is not high requirements, heavy hammer crusher can be a stone material to play molding, very practical.
d. Cone crusher: feed ≤ 560mm, discharge 3-60mm adjustable, mainly for high hardness stone processing, output is very large, suitable for large-scale beneficiation, sand making, crushing stone use.
e. Sand making machine: feed size ≤ 60mm, discharge between 0-5mm, high-quality construction sand processing equipment, the finished sand is less than the proportion of over-crushed, low stone powder content, gradation and rationalization, uniform particle size, high quality.
3. Screening, washing stage
Screening usually adopts circular vibrating screen, tumbler screen and so on. Through screening, the sand and gravel production line can get the finished product of different specifications of stone with uniform size and reasonable grading. The focus of environmental protection in this stage is still to reduce dust pollution, can be used to cover or install spraying equipment.
The washing section generally adopts wheel-type sand washing and recycling machine, which not only can recover the valuable fine sand in the water after washing sand, but also can realize the reuse of the upper layer of clean water and reduce the waste of water resources.
The above methods and suggestions are for the new environmentally friendly sand and gravel production line in the purchase of equipment and the environmental protection of each section of how to pass the evaluation. If there are conditions, you can also move the sand and gravel production line into the plant, purchase a set of environmental protection dust removal equipment, control dust emissions, to ensure production safety.
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