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Main Processing Equipments in Quartz Ore Beneficiation Plant

LauraLaura Mar 17, 2022Mar 17, 2022 305305
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Quartz ore in xinhai processing plant.jpg

Quartz ore, also known as silica ore (silica ore with SiO2 content above 98.5%, silica ore with SiO2 content below 98.5%) can be made into high-purity quartz ore after beneficiation and purification, and is widely used in glass, ceramics, metallurgy, casting and refractory industries.

At present, the common quartz ore beneficiation process is to remove the mineral impurities in the quartz ore by scrubbing the raw quartz ore, magnetic separation, chute gravity separation, flotation, pickling or a combination of several methods to obtain the particle size and the impurity content meets the requirements of high-purity quartz ore. In this process, the commonly used quartz ore beneficiation equipment mainly includes rod mill, magnetic separator, flotation machine, hinder settler, XCⅢ hydrocyclone, high-frequency and high-efficiency dewatering screen, inclined plate thickener, scrubber, desliming bucket, slurry pump, etc.

In this article, we will mainly explain the rod mill, magnetic separator, flotation machine, hindered settler and XCIII hydrocyclone.

01 Rod Mill

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In the quartz ore processing, rod mills are mostly used for grinding equipment, which has better grinding effect, controllable discharge particle size, and certain scrubbing function.

◆ The discharge particle size of quartz ore grinding is usually between 40 mesh and 120 mesh. The steel rod of the rod mill is in surface-to-surface contact with the material, which is not easy to appear over-grinding. At the same time, it ensures the qualified products of grinding and excludes the unqualified products outer.

◆ The use of a rod mill to treat the quartz ore plays the role of scrubbing to a certain extent, which can help to remove some impurities.

◆ The steel rod and steel rod of the quartz ore rod mill have a certain screening effect on the quartz ore during the movement, so that the large particles can be lifted to the top position of each layer, and concentrated to the place with strong crushing ability for crushing.

xinhai rod mill.jpg

02 Magnetic Separator

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Magnetic separation is one of the effective methods to remove iron-containing impurities in quartz ore, so as to remove weak magnetic impurity minerals such as hematite, limonite and biotite including conjoined particles as much as possible.

Intensive magnetic separation usually adopts wet strong magnetic separator or high gradient magnetic separator. Generally speaking, for the quartz whose impurities are mainly weak magnetic impurity minerals such as limonite, hematite, biotite, etc., it can be selected by using a wet strong magnetic machine above 10000 GS; for the impurities mainly containing magnetite For strong magnetic minerals, it is better to use a weak magnetic machine or a medium magnetic machine for sorting. In order to further remove a small amount of other weakly magnetic minerals (such as amphibole, pyroxene, and the conjoint of magnetic minerals and quartz), a high-gradient magnetic separator with a magnetic field strength greater than 12,000 gauss can be used for secondary magnetic separation.

xinhai magnetic separator.jpg

03 Flotation Machine

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Flotation is also a widely used beneficiation method in quartz ore processing plant, mainly to remove feldspar, mica and other non-magnetic associated impurities in quartz sand. The quartz sand dressing equipment used in this process is various types of suction mechanical mixing flotation machine (SF type flotation machine, BF type flotation machine, JJF type flotation machine) and inflatable mechanical mixing flotation machine (KYF type flotation machine, XCF type flotation machine).

xinhai flotation machine.jpg

04 Hinder Settler

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The hindered settler is a kind of interference settlement equipment, which is mainly composed of a cylinder, a bracket, a feeding port, an overflow tank, a blocking ring, a support seat, a pressure detector, an electric valve and an automatic control system. Especially effective special equipment for non-metals such as ore. The material is affected by the rising water flow in the cylinder to achieve the purpose of particle size classification and specific gravity separation, with high production efficiency and low energy consumption. It can be equipped with an automatic control system, and the adjustment of operating parameters is simple, convenient and easy to control. The water tank at the bottom of the cylinder can be equipped with a special rubber nozzle device. When the water stops, the rising water hole is automatically closed, and the material in the cylinder will not block the water hole and enter the water tank.

In the quartz ore processing plant, the hindered settler can strictly classify the coarse and fine particles, completely replacing the fine screen for particle size control.

05 XCⅢ Hydrocyclone

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The XCIII hydrocyclone has a specially designed fish tail device at the grit chamber and a specially designed siphon device at the top of the overflow tank, so it has excellent characteristics that other hydrocyclones cannot match. Through the adjustment of the siphon device, a higher underflow concentration and a lower overflow concentration can be obtained. For the silica ore (quartz ore) industry, the overflow can be adjusted to discharge almost water, and the underflow concentration can be as high as 85%. In addition, the specially designed fish tail device can keep the discharge concentration and overflow fineness of the cyclone cone underflow constant when the ore feeding amount, ore feeding concentration and ore feeding pressure fluctuate within a certain range.

06Summary

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In the actual beneficiation process, the selection of quartz ore beneficiation process and equipment is often determined according to various factors such as the nature of quartz ore ore, beneficiation plant conditions, and investment budget. We need to comprehensively consider the actual situation, investment and other factors of the beneficiation plant to determine the beneficiation plan, and tailor the quartz ore beneficiation equipment to achieve the ideal return on investment. In the next article, we will introduce the other five types of equipment commonly used in quartz ore processing plant.

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