Green machinery on the status quo of sand and gravel industry


Release Date:

2021-01-05

The sand and gravel industry, all of which are based on the development and utilization of resources. Sand and gravel has always been one of the important building raw materials for economic construction and development, but the sand and gravel industry is large in scale and weak in strength. The current situation of the sand and gravel industry is mainly manifested in the following three aspects:

The sand and gravel industry, all of which are based on the development and utilization of resources. Sand and gravel has always been one of the important building raw materials for economic construction and development, but the sand and gravel industry is large in scale and weak in strength. The current situation of the sand and gravel industry is mainly manifested in the following three aspects:

1. Large output, many sand and gravel factories, many employees and large resource consumption.

2, low labor productivity, low group simplicity, low technical content, low added value of finished products, low anti-risk ability, low quality inspection attention.

3, a full set of mining license difficult.

The status quo of the sand and gravel industry is: natural sand and gravel are not allowed to be mined, and the space for machine-made sand has steadily increased. At present, the sand and gravel industry has become a seller's market. The variety of sand and gravel used for concrete is mixed, and the entire market is flooded with inferior sand.

 

 

First, several types of sand are common in the concrete industry.

1. River sand: grinding with time, full and round particles.

2. Machine-made sand: gravel processing, can process different sizes and models.

3. Sand washing: clean up the dry riverbed or mountain sand, and recycle the remaining sand as aggregate.

4, with construction waste as raw material, more powder, poor solidification.

5. Sea sand: desalination treatment is required to control the chloride ion content at the standard line.

6. Waste slag tailings: It is found that a large number of steel slag sand and quicklime granular sand are used, which has poor volume stability, high metal content, high maintenance cost and poor construction quality.

 

 

Green machinery is a and product research, development, production, sales, service as one of the integrated enterprise, since its inception, has been committed to the new type of vibration screening equipment research and development, can be a good solution to the problem of low quality of sand and gravel, for the construction needs to improve the standard.

 

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