magnetic separation between sand and iron

the difference between dry magnetic separation and wet magnetic separation equipment - news - foshan powtech technology company limited

the difference between dry magnetic separation and wet magnetic separation equipment - news - foshan powtech technology company limited

The common dry magnetic separator: dry magnetic field magnetic separator (iron separator, magnetic pulley), dry magnetic field magnetic separator (including induction roller magnetic separator, dry magnetic disc type strong magnetic separator, dry roller strong magnetic separator).

The iron remover is mainly used to remove inclusions of iron or iron from the material flow. There are two kinds of electromagnetic and permanent magnets. There are two kinds of fixed suspension type and belt type suspension.

For dry selection of fine grained ferromagnetic ores, it is also suitable for removing magnetic impurities and purifying magnetic materials from powdery materials. The right picture shows the structure of the CTG type magnetic separator.

The earliest industrial magnetic separators for separating weak magnetic minerals are dry type. They are widely used in the separation of manganese ore, oxidation or semi iron oxide ore, seashore placer, wolframite, tin ore and phosphate rock. The dry high intensity magnetic separator is divided into four types according to its structure: induction roller, disc type, drum type and permanent magnet roller type.

It is composed of electromagnetic system, separation system and transmission system. In order to reduce the heat of eddy current and drive power, magnetic roller is stacked alternately with thin magnetic strip and nonmagnetic wafer.

Reclaiming Ilmenite from seashore placer; obtaining high quality raw materials and raw materials for cement industry; purification of minerals such as feldspar and andalusite; separation of chromite, monazite, wolframite, iron ore and other minerals.

It is suitable for the separation of weak magnetic ore with a magnetic coefficient of more than 5 x 10-7m3/kg and a particle size less than 2 mm, and is mostly used in the selection of coarse concentrate containing rare metal minerals (such as coarse tungsten concentrate, ilmenite, zircon and monazite).

It is composed of ore feeding hopper, weak magnetic feeding tube, induction ore unloading roller, magnetic roller and ore hopper. The two magnetic rollers are configured to form a closed magnetic circuit. Two the magnetic roller is driven by worm gear deceleration mechanism and is relatively rotated, and the clearance is changed by the polar distance adjusting mechanism. The induction ore unloading roller is made of industrial pure iron, and the surface is machined into prismatic protuberance.

7 methods and equipment for removing iron from quartz sand | fote machinery

7 methods and equipment for removing iron from quartz sand | fote machinery

The purification of quartz sand is very difficult, mainly because it contains some impurity minerals, some of which containing iron elements, such as goethite, hematite, limonite, ilmenite, pyrrhotite, tourmaline, amphibole, biotite and so on.

These impurities greatly reduced the use-value of quartz sand, so the removal of iron from quartz sand is very important. The following introduces 7 methods and equipment for removing iron from quartz sand.

Gravity separation can usually be used effectively for the entire particle size range of quartz sand. When the iron in quartz sand is mainly in the form of heavy minerals (relative density > 2.9), gravity selection should be considered firstly. But gravity separation is difficult for mixed particles, flaky particles, light mineral particles and medium-density minerals.

Spiral chute gravity separation can be used when the material contains a particularly small amount of heavy mineral impurities (such as zircon). The greater the specific gravity difference of minerals, the higher the degree of separation.

When the spiral chute is used for beneficiation, the quartz mortar can be divided into three parts: granular heavy mineral area, granular quartz sand area, flaky and light quartz sand area. In this way, not only the heavy minerals in quartz sand can be removed by the spiral chute, but the mica minerals can also be removed partially.

Quartz, the main mineral in quartz sand, is a diamagnetic substance that cannot be magnetized in a magnetic field. The iron-containing impurity minerals in quartz sand, such as hematite, limonite, magnetite, goethite, etc., are mostly magnetic.

The quartz sand flotation method mainly removes iron-containing mineral impurities such as mica, feldspar, garnet and amphibole. A three-stage flotation process is used to remove iron-containing argillaceous, mica and feldspar minerals from quartz sand respectively.

If the finished quartz sand is reddish, and the iron and titanium content does not meet the product quality requirements, the acid leaching method can be used. Wash the quartz sand with water to remove powder and impurities, then carry out acid leaching before drying it.

Quartz sand acid leaching method (chemical treatment) has good iron removal effect, but the cost is higher, the technical requirements are stricter, and it is harmful to the environment. However, in order to obtain higher purity quartz sand, this chemical method will inevitably be used in the future.

Stirring and scrubbing are accomplished by friction between particles caused by violent agitation of the blades. However, since iron oxide films are thin and strong, this method is unlikely to remove them. If necessary, chemical reagents can be added.

Ultrasonic iron removal is mainly to remove the secondary iron film on the surface of the particles. When treated with ultrasonic technology for 10 min, its iron removal rate can generally reach 46% to 70%. In order to improve the effect of ultrasonic cleaning, a small number of reagents (such as sodium carbonate) and surfactants (such as water glass) can be added.

Ultrasonic iron removal is currently relatively expensive for the beneficiation of quartz sand, and it is still difficult to apply in large-scale concentrators, but for those who require high purity, low production is possible.

Microbial leaching of thin-film iron or immersion iron on the surface of quartz sand particles is a new technology for iron removal, which is currently in the research stage of laboratory and small-scale experiments.

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removing iron from silica in sand washing processing | lzzg

removing iron from silica in sand washing processing | lzzg

Silica sand is an important non-metallic mineral raw material with a wide range of uses. The content of quartz sand iron directly affects the quality of the product. This paper mainly introduces the advantages and disadvantages of mechanical scrubbing and iron removal, magnetic separation, ultrasonic iron removal, flotation iron removal and acid pickling. With the development of microelectronics, optoelectronics and other industries, the excellent performance of high-purity quartz sand makes other powders irreplaceable, and the market prospect is extremely broad. silica sand production plant Quartz sand, also known as silica sand, glass sand is an important non-metallic mineral raw material widely used in glass, casting, ceramics and refractory materials, metallurgy, construction, chemicals, plastics, rubber, abrasives and other industries. Fengyang quartz sand is mainly used to manufacture glass, and the content of iron in quartz sand directly affects the quality of the product. The purity requirement of quartz sand in high-tech field is harsh: generally requires SIO2 content greater than 99.99%, impurity content, especially The content of iron impurities is limited to a very low range, so it is very important to increase the taste of quartz sand in the production process to reduce the content of iron. In silica sand, the main mineral is quartz, and it also contains some other impurity minerals. The impurity minerals containing iron are hematite, magnetite, goethite and so on. These iron-containing impurities are either embedded in the quartz particles or attached to the quartz surface. Because the presence of these iron-containing impurities greatly reduces the use-value of quartz sand, affecting the quality of the product, such as in the production of glass, iron-containing impurities will cause greater harm to the production and quality of the glass, especially for glass melting. The thermodynamic properties of the process and the light transmission of the finished glass. Currently used in iron removal technology mainly have the following methods: 1.Mechanical scrubbing Mechanical scrubbing is the removal of iron from the surface of quartz sand and iron-containing minerals adhering to the surface of quartz sand by means of mechanical external force and collision and friction between sand particles. Currently, scrubbing techniques are primarily rod scrubbing and mechanical scrubbing. Compared with other iron removal processes, the process has the following characteristics: First, the product quality is good, and the quality requirements of float glass for high-quality silica sand can be achieved; second, the output is large. Now some small-scale production and processing companies use this method to remove more iron because it is cheaper and easier to operate, but the iron removal rate is relatively low. 2. Magnetic separation to remove iron from silica sand Magnetic separation is divided into a dry selection and wet selection. The comparison between dry selection and wet selection shows that the wet magnetic separation has the defects of large magnetic consumption, easy wear of the medium, large production water consumption, high operation, maintenance cost. The dry strong magnetic separation process is easy to operate, and the operation and maintenance costs are lower than the wet type. In the magnetic separation process, the wet magnetic separator can remove the weak magnetic impurity minerals such as hematite, limonite, and biotite including the continuum particles. 3. Ultrasonic iron removal Ultrasonic iron removal is primarily a secondary iron film (ie, thin-film iron) that removes the surface of the particles. The iron film is firmly bonded and the mechanical scrubbing method used in the beneficiation cannot be separated. 4. Flotation and iron removal The flotation method can be divided into three types: the first one is a fluorine acid method. This method is widely used because of its good flotation effect, easy control, and stable index. 5. Acid leaching iron Acid leaching and iron removal The use of quartz is insoluble in acid (except HF), and the impurity mineral containing Fe can be dissolved by acid so that the purpose of removing iron-containing minerals from quartz sand can be achieved.

Silica sand is an important non-metallic mineral raw material with a wide range of uses. The content of quartz sand iron directly affects the quality of the product. This paper mainly introduces the advantages and disadvantages of mechanical scrubbing and iron removal, magnetic separation, ultrasonic iron removal, flotation iron removal and acid pickling. With the development of microelectronics, optoelectronics and other industries, the excellent performance of high-purity quartz sand makes other powders irreplaceable, and the market prospect is extremely broad.

Quartz sand, also known as silica sand, glass sand is an important non-metallic mineral raw material widely used in glass, casting, ceramics and refractory materials, metallurgy, construction, chemicals, plastics, rubber, abrasives and other industries. Fengyang quartz sand is mainly used to manufacture glass, and the content of iron in quartz sand directly affects the quality of the product. The purity requirement of quartz sand in high-tech field is harsh: generally requires SIO2 content greater than 99.99%, impurity content, especially The content of iron impurities is limited to a very low range, so it is very important to increase the taste of quartz sand in the production process to reduce the content of iron.

In silica sand, the main mineral is quartz, and it also contains some other impurity minerals. The impurity minerals containing iron are hematite, magnetite, goethite and so on. These iron-containing impurities are either embedded in the quartz particles or attached to the quartz surface. Because the presence of these iron-containing impurities greatly reduces the use-value of quartz sand, affecting the quality of the product, such as in the production of glass, iron-containing impurities will cause greater harm to the production and quality of the glass, especially for glass melting. The thermodynamic properties of the process and the light transmission of the finished glass. Currently used in iron removal technology mainly have the following methods:

Mechanical scrubbing is the removal of iron from the surface of quartz sand and iron-containing minerals adhering to the surface of quartz sand by means of mechanical external force and collision and friction between sand particles. Currently, scrubbing techniques are primarily rod scrubbing and mechanical scrubbing. Compared with other iron removal processes, the process has the following characteristics: First, the product quality is good, and the quality requirements of float glass for high-quality silica sand can be achieved; second, the output is large. Now some small-scale production and processing companies use this method to remove more iron because it is cheaper and easier to operate, but the iron removal rate is relatively low.

Magnetic separation is divided into a dry selection and wet selection. The comparison between dry selection and wet selection shows that the wet magnetic separation has the defects of large magnetic consumption, easy wear of the medium, large production water consumption, high operation, maintenance cost. The dry strong magnetic separation process is easy to operate, and the operation and maintenance costs are lower than the wet type. In the magnetic separation process, the wet magnetic separator can remove the weak magnetic impurity minerals such as hematite, limonite, and biotite including the continuum particles.

Ultrasonic iron removal is primarily a secondary iron film (ie, thin-film iron) that removes the surface of the particles. The iron film is firmly bonded and the mechanical scrubbing method used in the beneficiation cannot be separated.

Acid leaching and iron removal The use of quartz is insoluble in acid (except HF), and the impurity mineral containing Fe can be dissolved by acid so that the purpose of removing iron-containing minerals from quartz sand can be achieved.

Silica sand is the main raw material for making ceramics and glass, so the market demand has been high. It is mainly processed by crushing, powdering, and iron removal. Fine silica sand removal methods instruction. The mechanical equipment required in the silica sand dry iron removal method is a crusher, a dry ball mill, a dry iron remover, a dry

How to make silica sand Quartz sand is a hard, wear-resistant, and chemically stable silicate mineral. Its main mineral component is SiO2. The color of quartz sand is milky white or colorless and translucent, with a hardness of 7. Quartz sand is widely used in glass, Casting, ceramics and refractory materials, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical industry, plastics,

Silica Sand Production Line The silica stone material is initially crushed by the coarse crusher, and then, the produced coarse material is conveyed by the belt conveyor to the fine crusher for further crushing. The finely crushed stone material enters the vibrating screen to screen out two kinds of stones, which meets the requirements of the sand making machine's feeding

Galalar project resources increased by 25% Diatreme Resources reports that the estimated resource of its Galarar silica sand project in Queensland has increased by 25% and is expected to reach 47.5 million tons. The silica content measured by this project for the first time was 99.28%, indicating that it may become a long-term source of high-quality silica sand. Due

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