Four common quartz sand beneficiation processing and ...

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01

Quartz Sand Processing Washing desliming method

There are a variety of mineral impurities in quartz sand, and the grades of different impurities have a close relationship with the particle size of quartz sand. For example, the grade of SiO2 decreases with the decrescence of quartz sand particle size, and the impurities such as Fe, Al grade will rise with the decrescence of quartz sand particle size, this kind of phenomenon in clay minerals quartz sand is particularly significant. Therefore, it is necessary to carry out ore washing and desliming treatment.

The commonly used quartz sand processing washing method is mainly the scrub method (rod mill scrubbing and mechanical scrubbing). In production, the rod mill scrubbing effect is more ideal than mechanical cleaning. The scrubbing concentration is kept at 50% ~ 60%, and the scrubbing time is determined according to the ore nature, which is based on initially meet the product quality requirements. And the time should not be too long to avoid too much energy consumption and equipment wear.

In addition, in the quartz sand scrubbing processing, the scouring reagent can be added to change the composition of mineral particles, enhance the scrubbing effect and improve the efficiency of impurity removal.

Application:

Used to treat the quartz sand containing a large number of clay and mud, or used to remove the film iron and adhesive impurities on surface of the quartz sand.

Quartz Sand Processing Equipment required:

High-efficiency agitator washer, hydrocyclone, rod mill, hydraulic classifier, desliming bucket

02

Quartz Sand Processing Magnetic separation method

The magnetic separation method is based on the magnetic difference between quartz sand and associated impurities minerals. Low-intensity magnetic separation is often used for the strong magnetic minerals, while high-intensity magnetic separation is mainly used for the weak magnetic minerals, and the magnetic field intensity should be more than Oe.

It should be noted that the number of magnetic separations and magnetic field intensities should be effectively controlled when using the magnetic separation method. In general, with the increase of magnetic separation times, the iron content in the ore will decrease, but most of the iron can be removed only under a certain magnetic field intensity. In addition, the effect of iron removal is also related to the size of quartz sand. Usually, the smaller the size of quartz sand, the better the effect of iron removal.

Application:

Often used to remove the weak magnetic impurities (eg. hematite, limonite, biotite) and strong magnetic minerals (eg. magnetite) contained in the quartz sand.

Quartz Sand Processing Equipment required:

Magnetic separator, High-intensity magnetic separator (eg. high gradient magnetic separator)

03

Quartz Sand Processing Flotation method

If the scrubbing, washing and desilming, magnetic separation methods cannot achieve the ideal beneficiation effect, the flotation method can be considered to remove the mica and feldspar from quartz ore.

If you want to learn more, please visit our website quartz sand beneficiation equipment.

' Mica removal: the cationic collector is used under the condition of pH value 3-4.

' Feldspar removal: In acidic conditions, fluorine flotation and fluorine-free flotation are used according to the different flotation reagents. The fluorine flotation means using the cationic collector to preferentially float feldspar under the activation of strong acid and fluorine ions. The fluorine-free flotation means to adopt the anionic collector dodecyl sulfonate and diamine cationic collector together, then the anionic collector complexes with the diamine collector adsorbed on the feldspar surface to form co-adsorption and improve the hydrophobicity of feldspar surface.

Application:

Mainly used to remove feldspar, mica, and various non-magnetic associated impurities in the quartz sand.

Quartz Sand Processing Equipment required:

Suction mechanical agitation flotation machine (SF flotation machine, BF flotation machine, JJF flotation machine), inflation mechanical agitation flotation machine (KYF flotation machine, XCF flotation machine)

04

Quartz Sand Processing Acid pickling method

The quartz isn't insoluble in acid (except HF), while the acid solution can dissolve other impurities. Therefore, the acid pickling method can be used in quartz beneficiation.

The commonly used acids in quartz sand pickling include sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid, etc. Dilute acid has a good effect on removing iron, aluminum, and magnesium, while the concentrated sulfuric acid and hydrofluoric acid have a good effect on removing titanium and chromium. According to the production practice, the mixed acid has a better effect on quartz sand beneficiation and purification.

Application:

Quartz sand contains iron, aluminum, magnesium, titanium, chromium, and other impurities, and the requirements on the purity of quartz sand are high.

Quartz Sand Processing Equipment required:

Leaching agitation tank

In the actual beneficiation process, the quartz sand beneficiation processing often needs to be determined comprehensively according to the ore properties, concentrator conditions, investment budget, and other factors. It is suggested to carry out the mineral processing test, then select the single or combined process through the beneficiation test report, striving for the ideal technical and economic benefits.

Quartz sand is quartz particles processed by crushing machines. Quartz stone is a kind of non-metallic minerals, which is silicate minerals with the features of hard, wear-resistant and stable chemical properties. The main purpose of quartz sand is used in the production of glass, foundry, ceramics and refractories, smelting ferrosilicon corresponding expansion of the product. Equipment applied in Quartz sand production line includes grinding equipment, classifying equipment, filtration equipment, drying equipment and separator equipment.

Because of the hardness of quartz sand, it is quite important in the choice of grinding equipment. Selection principles are as follows: As a grinding equipment, ball mill's grinding capacity will directly determine the ability to achieve large-scale production. During the production of Quartz sand production line, we would apply high-pass fine ball mill, which must meet certain the influence factors, like aspect ratio, reasonable requirements within the mill structure, proportion liner grinding media and so on.

A powder mill rate is an important factor for classifying, which must meet a certain percentage and then ensure the high-grade production. The most obvious factors that affect the rate of pulverized is the aspect ratio, grinding media grading, and media filling rate. They should also solve the problem of paste grinding and over grind.

For the production of quartz sand, we generally select the aspect ratio of 3-4 ball mill, while grinding media would be applied to 4-5 kinds of different specifications. The media filling rate can be adjusted to 28-35%.

In order to ensure the purity of the grinding process, ball mill liners and grinding media inside cannot use metal. Quartz material or aluminum oxide ceramic material is applied, which achieves good results. Xinhai business scope includes most of the quartz sand production equipment, and Xinhai impresses customers with high-quality equipment, high-quality service.

Contact us to discuss your requirements of crushing equipment. Our experienced sales team can help you identify the options that best suit your needs.