Silica Sand Washing Plant | Quartz Sand Processing

Silica sand washing plant mainly includes: quartz stone crushing and sand making, washing, grading, desliming, scrubbing, magnetic separation, flotation, acid leaching and other processes to remove the small amount or micro amount of impurities in silica sand and obtain refined silica sand or high-purity silica sand for glass, ceramics, construction, chemical and other industries.

sand plant

Silica Sand Manufacturing & Washing Process

quartz sand

(i) Crushing & Silica Sand making

Quartz stones are first sent to jaw crusher for coarse crushing, then to the cone crusher for medium and fine crushing after reasonable screening by the circular vibrating screen, and the unqualified materials will be returned to the cone crusher for re crushing after the same screening. The quartz stones that meet the requirements of sand making are driven by the conveyor into the sand making machine for sand making and shaping to obtain 0-5mm silica sand.

(ii) Washing, Grading & Desliming

There are a lot of clay minerals in quartz stone materials, so it is necessary to wash and desliming silica sand.

[Application Scope of Washing]: it is suitable for minerals that can be simple washed to remove clay. Generally, the silica sand size is 0.075-1.0mm, while the grain size of clay mineral < 50 μm, generally less than 20 μm.

[Washing]: Different sand washing equipments can be used for cleaning, such as washing chute, hydrocyclone, upflow hydraulic classifier, etc. At present, the upflow hydraulic classifier is mostly used, fine minerals are discharged from the top overflow outlet in the form of mud, while coarse and heavy particles are discharged from the bottom.

[Screening]: The coarse sand can be removed by a 0.5-1.0mm wet screen, so that silica sand and clay minerals can be separated from each other in the water medium.

(iii) Scrubbing

Scrubbing refers to the removal of the film iron, binding and argillaceous impurity minerals on the surface of silica sand by mechanical force and the abrasive force between the sand particles, and the further grinding of the mineral aggregates which are not assembled. The after classification operation, the silica sand will be further purified.

At present, there are mainly mechanical scrubbing, rod scrubbing, high-efficiency strong scrubbing with medicine and ultrasonic scrubbing. The mechanical scrubbing equipment is rotary scrubber, which has strong scrubbing capacity: 200-250T/H.

(iv) Magnetic Separation

Magnetic separation is mainly used to remove the magnetic minerals in silica sand. For example, hematite, limonite, biotite and other weak magnetic minerals can be removed through the strong magnetic separator, while the strong magnetic minerals such as magnetite, titanomagnetite and pyrrhotite can be removed through the weak magnetic separator.

(v) Flotation

The composition of silica sand is complex, except for the iron bearing minerals, there are often mica, feldspar and clay minerals. Some impurities in silica sand, such as feldspar and mica, which cannot be removed by magnetic separation, but can be separated by different collectors. In general, the purity of silica sand can be increased to 99% after scrubbing, desliming, magnetic separation and flotation.

(vi) Acid leaching

The removal of iron from silica sand by acid leaching is based on the fact that silica sand is insoluble in acid (except HF), and the impurity minerals containing Fe can be dissolved by acid solution, so the iron minerals can be removed from silica sand.

After flotation, the purity of silica sand can reach 99.5-99.9%. If the silica sand is further purified, the impurities in the form of spots and inclusions on the surface of silica particles must be treated by acid leaching. According to the requirements of different industrial uses for different impurity minerals (Fe, Al, Ti, Cr) of silica sand, the mixed acid leaching treatment with different concentration and ratio is carried out.

In addition, acid leaching time, mineral particle size and slurry agitation all affect the removal efficiency. Therefore, it is necessary to control various factors reasonably to reduce the silica sand washing plant cost.

Main Equipments of Silica Sand Washing Plant

Silica sand washing plant includes Vibrating feeder, Vibrating screen, Jaw crusher, Cone crusher, Sand making machine, Belt conveyor, Magnetic separator, Rod mill, Attrition scrubber, Hydraulic classifier, Spiral classifier, Agitation tank.

NO.Mineral EquipmentQuantityNO.Mineral EquipmentQuantity
1Vibrating Feeder16Belt Conveyor15
2Vibrating Screen37Magnetic Separator2
3Jaw Crusher18Attrition Scrubber1
4Cone Crusher29Hydraulic Classifier1
5Sand Making Machine110Agitation Tank1

Silica Sand Washing Flow Chart

silica sand process flowchart

Silica Sand Washing Plant Price (cost)

There will be great differences in the silica sand washing plant price supplied by different silica sand washing plant manufacturer with different configurations and different capacities. In addition, the price of the same silica sand plant manufactured by different manufacturers may also be different, because the function and cost of each equipments are different.

If you want to buy more high quality silica sand plant equipments with less investment, we suggest you consult the silica sand equipments manufacturer.

How To Choose Silica Sand Washing Plant Manufacturers

Cooperation with appropriate manufacturers can ensure long-term economic benefits. What factors should be paid attention to when choosing silica sand washing plant manufacturers?

silica sand equipment

1. Manufacturers’ Strength

The comprehensive strength of the manufacturer mainly lies in the production scale of the manufacturer, whether there is a professional R & D team and quality inspection technicians, and whether the manufacturer has sufficient funds.

2. Equipment Quality

Silica sand washing equipment with good quality is stable and reliable in actual production and operation, with high equipment operation rate and production efficiency, low failure rate and long service life.

3. Field Trip

When choosing a silica sand washing plant manufacturer, it is best to conduct field investigation on the manufacturer, investigate the scale and environment of the manufacturer’s workshop, fully understand the production process and supporting facilities of the equipment, and also test the silica sand processing equipments.

4. After sales Service

  • (1) Return Visit
    The silica sand washing plant manufacturers shall follow up and visit in time to understand the operation status, production capacity of sand processing equipment and the use of vulnerable parts, and solve the problems encountered by customers in the production process.
  • (2) Accessories Supply
    The silica sand washing plant manufacturers need to have a perfect after-sales parts supply system, which can provide parts and wearing parts in time and reduce the downtime and maintenance time.


  1. Gayan says:

    Hi, I’m from Sri Lanka, Looking for a silica sand washing plant and spiral separation plant. (3-10 T/H).
    Thank you

  2. M.Rezaei says:

    Dear Sir/madam

    we are from Iran looking for lake salt processing plant (without packing section) for capacity
    of about 5/tons per day therefore we request you kindly to offer us suitable complete plant
    with detailed specifications and price and let us to know the following information.
    1. the plant size , what size of area needs to place the plant?
    2. the shipment volume of the full plant , how many containers need for loading?
    3. will you send your engineers for installation? any additional charge for installation ?
    4. what is the payment term?
    5. delivery time?
    we only want to process the lake salt naturally to produce edible salt without any additive
    or iodine etc.
    thanks for your kind attention and waiting your reply
    best regards
    M.Rezaei (mr)

  3. Siddharth says:

    Please provide plant details for manufacturing of High Purity Quartz

  4. Lim says:

    Hi I’m looking for quotation for the equipment required from crush quartz stone to producing silica sand. Thank you

    1. beidoou says:

      Hello Mr Lim,
      Thanks for your inquiry, our engineer will contact you for more infomation about silica sand producing solutions.

  5. Darnellnar says:

    I am sorry, that I interfere, but it is necessary for me little bit more information.

  6. sj says:

    I m looking for silica sand magnetic separator and conveyor belt. The aim is to reduce Fe2o3 from 0.012%-0.014% to 0.005%. Do u have something that have capacity to operate 1000-2000 tonne per hour? Thanks

    1. Dato' Abdul Aziz says:

      I’m looking magnetic washing for silica sand. Please reply me asap. Is there any local supplier in Malaysia for this machine and what is the specification, model and price. Please let me have the quotation. Thank you

  7. Shreebalaji says:

    Hi I am Balaji from Chennai India , we have own mines in south India
    we want very big dumps with Quartz and we need a Trommel screen to seperate it 25 – 100 mm .. pls advice with price range

    1. beidoou says:

      Hello Mr Shreebalaji,

      Thanks for your inquiry, we have the trommel screen, and i will contact you.

  8. Inba shekaran says:

    I am from KL, Malaysia
    Our company wish to set up a sand purification factory in Malaysia
    Our composition report of raw sand varies from 98% to 99% silica
    We wish to produce silica with content of it range from 99.5% to 99.9%

    Please contact me for further work

    Thank you

    1. Shreebalaji says:

      Sir , normal silica sand from River bed and Sea shore silica % will be 95 – 97 % only
      If you require silica 99.5 – 99.9 % you should Crush Quartz Lumps and process it
      OR Fuse the low grade Quarts for high purity

  9. Abraham Getachew says:

    Would like to know Quartz grinding and Silica sand washing process

    1. beidoou says:

      Hello Mr Abraham Getachew,
      Thanks for your inquiry, we will contact you very soon for the silica sand processing solutions.

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