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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Применить Всего найдено 4. Отображено 4.
21-07-2023 дата публикации

Method for recycling weakly magnetic iron ore from fine-fraction waste rock

Номер: CN116459947A
Автор: ZHANG JINHAI, ZHAN RENLI, CHI YONGQIN, WANG XIN, GUO YI, BIAN LIGUO
Принадлежит:

The invention discloses a method for recycling weakly magnetic iron ore from fine-fraction barren rock, which comprises the following steps of: 1) screening 0-5mm barren rock with the iron grade of 15-18% and thrown out by dry pre-selection of a mine into two fraction ranges of 0-1mm and 1-5mm by using a linear vibrating screen; (2) carrying out one-roughing and one-sweeping wet-type deep enrichment and waste throwing on the weakly magnetic refractory iron ore in a size fraction range of 0-1mm by adopting a high-gradient electromagnetic separator with a medium rod gap of 2mm, wherein the field intensity is 11000GS; 3) performing one-roughing and one-sweeping wet-type enrichment waste throwing on the weakly-magnetic refractory iron ore in a size fraction range of 1-5mm by adopting a high-gradient electromagnetic separator with a medium rod gap of 8mm, wherein the field intensity is 14000GS, and 4) combining pre-selected concentrates obtained in the step 2) and the step 3) and feeding the ...

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Номер записи: 1
30-06-2023 дата публикации

Deep pre-concentration and potassium removal method for weakly magnetic refractory iron ore

Номер: CN116351556A
Автор: ZHOU BIN, ZHAN RENLI, CHI YONGQIN, BIAN LIGUO, GUO YI, WANG XIN
Принадлежит:

According to the deep pre-concentration potassium removal method for the weakly magnetic refractory iron ore, phyllite surrounding rock with the high K2O content and peperomia and quartz which do not contain K2O are thrown out in advance through deep pre-concentration, the K2O content of selected raw ore is reduced to 0.31% or below from 0.7% and is reduced by 55.71% or above, and therefore the K2O content of iron ore concentrate is reduced, the quality of the iron ore concentrate is improved, and good practicability is achieved.

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Номер записи: 2
04-07-2023 дата публикации

Comprehensive tailing enrichment and concentration method for iron ore tailing pond

Номер: CN116371593A
Автор: ZHAN RENLI, CHI YONGQIN, WANG XIN, GUO YI, BIAN LIGUO, ZHOU BIN, ZHAN ZONGFENG, ZHANG ZIWEN
Принадлежит:

The invention provides an iron ore tailing pond comprehensive tailing enrichment and concentration method which comprises the following steps: (1) carrying out low intensity magnetic separation on comprehensive tailings to obtain enriched concentrate and enriched tailings, and carrying out magnetic separation on the enriched concentrate in a one-roughing and two-concentrating manner to obtain first comprehensive concentrate; (2) performing high-intensity magnetic separation on the enriched tailings by adopting a high-gradient high-intensity magnetic separator in a one-roughing and one-sweeping manner to obtain pre-selected tailings and pre-selected concentrate; and (3) performing high-intensity magnetic separation on the pre-selected concentrate by adopting a high-gradient high-intensity magnetic separator in a one-roughing and two-sweeping manner to obtain second comprehensive concentrate. According to the characteristic that different tailings are large in magnetic difference, different ...

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Номер записи: 3
14-07-2023 дата публикации

Method for improving grade of weakly-magnetic refractory iron ore through high-intensity magnetic separation

Номер: CN116422467A
Автор: ZHAN RENLI, CHI YONGQIN, WANG XIN, BIAN LIGUO, GUO YI
Принадлежит:

The invention provides a method for improving the grade of weakly-magnetic refractory iron ore through strong magnetic separation, which comprises the following steps: grinding the weakly-magnetic refractory iron ore with the iron grade of 31-33% of 0-15mm to below 3mm through a high-pressure roller, classifying the weakly-magnetic refractory iron ore into two fractions of 0-0.5 mm and 0.5-3mm by adopting a linear vibrating screen, and carrying out wet-type pre-concentration and waste discarding on the weakly-magnetic refractory iron ore with the fraction of 0-0.5 mm by adopting a high-gradient strong magnetic separator with a medium rod gap of 2mm, so as to obtain the weakly-magnetic refractory iron ore with the fraction of 0-0.5 mm. The method comprises the following steps: carrying out wet-type pre-concentration and waste throwing on weakly-magnetic refractory iron ore with the size fraction of 0.5-3mm by adopting a high-gradient high-intensity magnetic separator with a medium rod gap ...

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Номер записи: 4