Iron concentrate stage separation by means of drum magnetic separator with modified separating bath

For magnetite and titanium magnetite ores, it is possible to use technology with the separation of concentrate before the last grinding stage. The possibility of staged separation of iron concentrate is due to different physical-mechanical properties of magnetite and rock minerals. The results of industrial and laboratory tests on the use of special magnetic separators with special structure, Derrick screen and screw separators in iron ore dressing schemes are presented. A comparison of proven dressing methods is performed. The choice of a specific dressing method for the staged separation of magnetite concentrate before the last grinding stage is determined by the properties of the base ore and the economic justification.

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“…The design of the separator bath No. 1 makes it possible to separate the initial product by magnetic properties and size [1]. Separator No.…”

Section: Application Of Separators With Special Structurementioning

confidence: 99%

Separation of magnetite concentrate before the last grinding stage

2020

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“…An increase in the fraction of "small" particles in the primary product leads to an increase in the probability of sieving. When the material moves along the screen sieve (from the first to the last row of meshes), the probability of particle sieving decreases.Screening is widely used in ore crushing and concentration, in metallurgy, in the production of construction materials, and in other industries [1][2][3]. Screening rates depend on the amount of fine particles that have passed through the screening surface of the screen.…”

mentioning

confidence: 99%

“…Screening is widely used in ore crushing and concentration, in metallurgy, in the production of construction materials, and in other industries [1][2][3]. Screening rates depend on the amount of fine particles that have passed through the screening surface of the screen.…”

mentioning

confidence: 99%

The probability of particles screening on the screen, taking into account the interaction of particles over the meshes of the sieve

Pelevin

2020

E3S Web Conf.

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The probability of a single particle screening through the mesh of a screen is usually estimated by the A.M. Goden formula. During screening along a screen sieve, a quantity of particles moves. Particles of different sizes interact with each other. Large particles block the meshes of the sieve and reduce the probability of small particles screening. A screening probability formula is proposed that takes into account the interaction of particles over the sieve meshes and the possibility of several particles passing simultaneously through the sieve mesh. The results of modeling the probability of sieving and screening process are presented. An increase in the fraction of “small” particles in the primary product leads to an increase in the probability of sieving. When the material moves along the screen sieve (from the first to the last row of meshes), the probability of particle sieving decreases.

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Iron ore beneficiation technologies in Russia and ways to improve their efficiency

Pelevin

2022

PMI

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Increasing the efficiency of crushing circuits is associated with a decrease in the particle size of finely crushed ore and the use of dry magnetic separation of crushed ore. Reducing grinding costs is achieved by using drum mills jointly with mills of other designs. The use of automation systems, slurry demagnetization, technologies with staged concentrate separation, and beneficiation and fine screening in a closed grinding cycle lead to a reduction in grinding costs. The main industrial technology for improving the quality of concentrate is its additional beneficiation using regrinding, fine screening, flotation, and magnetic-gravity separators. Increasing the integrated use of iron ore raw materials is associated with an increase in the yield of iron concentrate and the production of hematite concentrate during the beneficiation of hematite-magnetite ores and ilmenite concentrate during the beneficiation of titanomagnetite ores. Incremented concentrate yield is possible by using magnetic separators with an increased magnetic induction up to 0.25-0.5 T in the first stages of beneficiation. To obtain hematite and ilmenite concentrates, combined technologies can be used, including fine screening, high-gradient magnetic, gravity, flotation, and electrical separation.

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Iron concentrate stage separation by means of drum magnetic separator with modified separating bath

Cited by 5 publications

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Separation of magnetite concentrate before the last grinding stage

Separation of magnetite concentrate before the last grinding stage

The probability of particles screening on the screen, taking into account the interaction of particles over the meshes of the sieve

Iron ore beneficiation technologies in Russia and ways to improve their efficiency

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