I. Market Situation in 2020 In 2020, the demand for sand and gravel in China's construction industry is still great. The prohibition and restriction of natural sand mining make machine-made sand aggregate become the main source of building sand. Setting up battlefield and investing in sand-making equipment is one of the ways to machine-made sand aggregate in production line. Effective and reasonable investment in sand yard can not only obtain considerable profits, but also effectively alleviate the shortage of sand aggregate for construction.
Two. Cost-benefit analysis The main investment costs of operating a battlefield include venues, equipment, procedures, taxes and workers' expenses. Generally, the investment in a small-scale battlefield needs about 400,000-800,000 yuan. The main raw materials of machine-made sand are rich, including pebbles, granite, river pebbles and construction waste. These raw materials are cheap, and the price of manufactured sand is 85~200 yuan/ton. Excluding the cost, the profit of one ton of manufactured sand can reach 45~60 yuan/ton.
Third, what equipment is needed to open the battlefield? 1, crushing stage equipment
Jaw crusher is often used in the coarse crushing stage of machine-made sand production, mainly used to crush ore raw materials with large particle size. If the particle size of machine-made sand raw material is small, this process can be omitted.
In the middle and fine crushing stage of machine-made sand production, it is used to process raw materials with small particle size but still can not directly enter the sand making machine. Commonly used equipment are impact crusher and cone crusher. Impact crusher is suitable for machine-made sand with ordinary hardness, and cone crusher is suitable for machine-made sand with higher hardness.
2. Equipment in the sand-making stage
Sand-making stage is an essential process of machine-made sand production, so sand-making machine is also an essential sand-making equipment. There are many kinds of sand makers, which can be roughly divided into fixed sand makers and mobile sand makers.
3, sand washing stage equipment
According to the user's requirements for sand quality, machine-made sand can be cleaned, so it is necessary to use a sand washer, which is generally used to clean and dehydrate the broken sand and gravel behind the sand making machine.
4. Auxiliary equipment
In addition to the above equipment, auxiliary equipment such as vibrating feeder, belt conveyor and vibrating screen are needed to assist the operation of cooking equipment, which is an indispensable part of sand production line.