After the epidemic was brought under control in China, with the resumption and addition of a large number of infrastructure projects, there has also been a huge demand for sand and gravel. How to find the sand source was once a challenge faced by sand and gravel enterprises in the context of river sand mining bans and restrictions, decreasing inventory, and rising prices. Imported river sand not only has a long waiting period, but also is expensive. Can we use sea sand instead?

At present, there is a rich stock of sea sand, but sea sand needs to be purified before it can be used. However, the cost of purifying sea sand is high and the process is complex. Some illegal individuals, in order to seek profits, have turned their minds to untreated sea sand, causing a large amount of sea sand to flow directly into the market without purification. The untreated sea sand has excessive chloride ions and strong corrosiveness. If used as a mechanism sand, it will cause huge and irreversible damage to engineering projects.

Currently, illegal mining, transportation, and use of sea sand in China are frequent, and illegal sea sand has penetrated into the eastern and central regions of China. The large-scale illegal mining, smuggling, and sale of sea sand nationwide has formed a chain of interests! A large amount of sea sand that has not been fully purified and has exceeded the chloride ion content has flowed into the construction industry. Concrete structures can cause corrosion of steel bars due to the excessive chloride ion content, posing hidden dangers to the quality and structural safety of construction projects, seriously threatening the lives and property safety of 1.4 billion people, and posing great harm.

So where is the way out for engineering quality safety and engineering sand?

The sand and stone materials we used in construction projects were mainly sourced from natural sand and stone directly excavated from river channels. Nowadays, with the continuous exploitation of natural sand and stone by humans and the need for ecological environment protection and restoration in the current social environment, river sand mining is prohibited and restricted, but the demand for sand is constantly increasing.

Faced with the immaturity of current sea sand treatment technology, the inability of river sand inventory to meet the demand for sand, and the long and expensive import cycle of river sand, the development of technological means is mature. The country strongly advocates and widely sources of machine-made sand, which is the best choice at present.

So what are the advantages of choosing machine made sand?

Resource advantages:

In addition to conventional stones, various solid waste resources can also be used, such as tailings, Construction waste, coal gangue, tunnel slag, etc., which not only solves the problem of environmental pollution, but also meets the requirements of energy conservation and environmental protection;

Quality advantages:

The raw materials are clean, the aggregate is continuously graded, and the fineness modulus of the machine made sand can be adjusted according to the concrete and mortar formulas to meet the needs of various dry mix mortars, commercial concrete, asphalt concrete, high-performance concrete, etc;

Management advantages:

Having a stable legal entity, implementing mining licenses, and having a fixed business premises. It can effectively prevent indiscriminate mining, protect the environment, increase government taxes, and improve the comprehensive utilization rate of resources;

Cost advantage:

Preparing concrete can save 10% -30% of cement; Matching with dry mixing can avoid drying, saving drying costs of 10 yuan/ton;

National policy advantages:

The state strongly supports and promotes the preferential use of qualified machine-made sand products, and many places provide tax exemption, environmental Protection racket and other support for enterprises related to the production of machine-made sand by solid waste recycling.

So what are the intelligent and high-yield combination equipment commonly used for producing machine made sand?

Recommended combination of commonly used equipment for hard material production mechanism sand:

Mobile jaw crushing station+mobile cone crushing station+mobile screening station

Application scope: Widely used in the initial crushing, intermediate crushing, and fine crushing of hard materials; Crushing of various types of mining rocks; Crushing of aggregates in asphalt and concrete mixing plants; Crushing of hard materials in other industries.

Recommended combination of commonly used equipment for solid waste resource regeneration and mining rock production mechanism sand:

Mobile jaw crushing station+mobile impact crushing station+mobile screening station

Application scope: Widely used in various medium hardness crushing processes for initial crushing, intermediate crushing, and fine crushing; Crushing of various types of mining rocks; Solid waste resource utilization, such as house demolition and fragmentation in road concrete recycling; Crushing of aggregates in asphalt and concrete mixing plants; Material crushing in other industries.

Recommended combination of commonly used equipment for producing sand for medium hardness materials:

Mobile jaw crushing station+mobile hammer crushing station+mobile screening station

Application scope: Widely used in various medium hardness crushing processes for initial crushing, intermediate crushing, and fine crushing; Crushing of various types of mining rocks; Mainly used for crushing and processing of flowing sand and gravel aggregates in mines, buildings, railways, highways, hydropower, bridges, etc.

Special sand making machine for sand making

Widely used in the fields of artificial sand making, metal ore, non-metallic ore, cement pre grinding, blast furnace slag, ceramic raw materials, etc. for medium crushing, fine crushing, and coarse grinding operations.