Generally, crushing and screening equipment is mainly used for crushing and screening of construction aggregates, metal mines and solid waste.

Sand & gravel aggregate plants

Construction aggregate (Sand & gravel aggregates)
Production of aggregates and concrete aggregates used in construction, highways, railways, bridges and tunnels.

Metal mineral crushing
The crushing stage process at the front end of metal minerals is used to improve the efficiency of grinding and separation.

Solid waste treatment
Crushing, screening and recycling of construction waste, mine tailings, etc.

Why do crushing and screening

  • Economic benefit
    Urban buildings, highways, railways, tunnels and bridges have high demand for sand and gravel aggregates.
    The use of crushing and screening equipment can crush and screen low-cost stones such as rocks and river rocks into aggregates suitable for sale, which can produce direct economic benefits.
  • Reduce manufacturing cost
    Industrial production has a large demand for steel, copper, aluminum and other metals.
    The huge raw ore mined is crushed to a size suitable for grinding and beneficiation to reduce production costs.
  • Environmental protection
    Building demolition and resource mining produce a large amount of solid waste accumulation, which not only occupies land resources, but may also cause damage to the environment.
    The solid waste can be collected, crushed and screened to renewable resources that can be recycled.

Introduction to the specific application of crushing and screening Plant

Construction aggregate crushing plant

Used in the production of concrete materials and roadbed road fabric

Typical Aggregate Production Process

Aggregate crushing plant (limestone)

Hopper—feeding (vibrating feeder)—coarse crushing (jaw crusher or impact crusher)—transit hopper—medium and fine crushing (impact crusher)—screening (vibrating screen)

Read also: Types of Feeders in Quarries

Aggregate crushing plant (granite)

Hopper—feeding (vibrating feeder)—coarse crushing (jaw crusher)—transit hopper—medium and fine crushing (cone crusher)—screening (vibrating screen)—shaping (vertical shaft impact crusher)

Aggregate crushing plant (river pebble)

Hopper—feeding (vibrating feeder + vibrating screen)—coarse crushing (small jaw crusher)—transition hopper—medium and fine crushing (cone crusher)—screening (vibrating screen)—shaping (vertical shaft impact crusher)

Artificial sand (granite)

Hopper—feeding (vibrating feeder)—coarse crushing (jaw crusher)—transition hopper—medium crushing (cone crusher)—sand making (vertical shaft impact crusher)—screening (vibrating screen)

Artificial sand (river pebble)

Hopper—feeding (vibrating feeder + vibrating screen)—coarse crushing (small jaw crusher)—transit hopper—medium crushing (cone crusher)—sand making (vertical shaft impact crusher)—screening (vibrating screen)

Typical raw materials

Limestone
Granite
River pebble

The raw materials are generally mountain rocks and river pebbles. Most mountain rocks are mined by perforation and blasting. The raw material specifications are based on the production line’s maximum size of 500-1200 mm.

Finished product specifications

  • Sand and gravel aggregate:
    0-5, 5-10, 10-25 mm
    0-5, 5-10, 10-31.5 mm
    0-5, 5-10, 10-20, 20-40 mm
  • Artificial sand: 0-5 mm
  • Railway ballast: 25-63 mm

The demand for finished products is a variety of continuous specifications, the maximum generally does not exceed 40 mm. Since it is mostly used to configure concrete or roadbed, etc., it has requirements for the finished product gradation, grain shape, mud and water content and other indicators.

Metal mineral crushing

Metal mineral crushing

Used in the crushing treatment stage of metal beneficiation

Typical application

Metal ore crushing

Hopper—feeding (vibrating feeder)—coarse crushing (jaw crusher)—transit silo—medium crushing (cone crusher)—fine crushing (cone crusher)—screening (vibrating screen)

Typical raw materials

Iron ore
Copper ore

The raw materials are mostly surface or underground mountain rock mines, and most of them are blasting mining. The specifications of the raw materials are below 500-1200mm according to the scale of the production line.

Typical finished product specifications

  • New ball milling process: 0-10 mm, 0-12 mm, 0-13 mm, 0-15 mm
  • New high-pressure roller mill technology: 0-20 mm, 0-25 mm
  • Old ball milling process: 0-20 mm, 0-25 mm, 0-30 mm

The discharge specification is generally a single mixed material, and the discharge is used for the back-end ball mill or high-pressure roller mill and mineral processing. In order to improve the back-end efficiency, it is generally required that the higher the discharge fine material content, the better, and there is no requirement for the particle size.

Solid waste crushing and screening

Used for making bricks
Recycled aggregates
Floor coverings

Typical application

Construction waste crushing

Construction waste crushing (mobile)

Hopper—feeding (vibrating feeder)—coarse crushing (jaw crusher)—transfer silo—medium crushing (impact crusher/jaw crusher)—screening (vibrating screen)

Hopper—feeding (vibrating feeder)—coarse crushing (impact crusher)—screening (vibrating screen)

Typical raw materials

Construction waste
Cement mine tailings
Iron ore tailings

The raw materials are mostly concrete blocks and waste rocks produced in building demolition or mine production. The raw materials are relatively complex and the specifications vary greatly. Generally, the maximum specifications are below 400-600 mm, and the maximum is generally not more than 1000 mm.

Typical finished product specifications

  • Sand or brick: 0-5 mm
  • Recycled aggregate:
    0-5, 5-10, 10-25 mm
    0-5, 5-10, 10-31.5 mm
    0-5, 5-10, 10-20, 20-40 mm

Depending on the purpose of the recycled materials, it is currently mostly used in the production of recycled aggregates, brick making and paving. The finished product requires a variety of continuous specifications, and there are certain requirements for the impurities, gradation, particle shape, and mud content of the finished product.

Contact us for detailed business plans and quotations for crushing and screening.

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