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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 2. Отображено 2.
18-04-2023 дата публикации

Filter aid for decomposing phosphorite acidolysis solution with nitric acid and filtering method

Номер: CN115970394A
Автор: ZHANG QIANG, ZHENG LEI, ZOU PENG, QI YINGJIE, SONG GUOFA, CHOO ANDRE BOON HWA, MENG XIN, CHEN HAINING, ZHU XIAOJIE, YU NANSHU, AIRI MANABU
Принадлежит:

The invention relates to the field of filter aids, in particular to a filter aid for decomposing phosphorite acidolysis liquid with nitric acid and a filtering method. The filter aid is a magnetic carbon filter aid, and a preparation method of the magnetic carbon filter aid comprises the following steps: fully mixing the coal gasification coarse slag with an electrolyte solution containing calcium ions, and then adding the mixture into a ball mill for grinding; then transferring into a tubular reaction furnace; then soaking the reaction product in an alginic acid and amino acid iron solution, carrying out ultrasonic oscillation, and centrifuging to obtain a solid product; and putting the solid product into the tubular reaction furnace for treatment. Adding humic acid into the acidolysis solution during filtering, stirring, standing, settling, and carrying out primary filter pressing to obtain primary filter residues and primary filtrate; adding a magnetic carbon filter aid into the primary ...

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Номер записи: 1
02-05-2023 дата публикации

Filtration aiding method for acidolysis solution in phosphate fertilizer production

Номер: CN116036725A
Автор: ZHENG LEI, ZHANG QIANG, SONG GUOFA, QI YINGJIE, ZOU PENG, MENG XIN, ZHU XIAOJIE, WANG XIAOFEI, CHOO ANDRE BOON HWA, YU NANSHU, AIRI MANABU
Принадлежит:

The invention relates to the field of filter aids, in particular to a filter aid method for acidolysis liquid in phosphate fertilizer production. The filtration aiding method comprises the following steps: mixing an inorganic flocculant and an organic anionic flocculant as a filtration aiding agent, adding the filtration aiding agent into an acidolysis solution generated by decomposing phosphorite with nitric acid, stirring, standing for precipitation, and carrying out filter pressing by adopting a filter press after complete precipitation. The flocculating agent has the beneficial effects that the settling rate and settling effect of the acidolysis solution are improved, the content of suspended matters in the filtered acidolysis solution is below 100mg/L, and a filter aid prepared from the flocculating agent has the characteristics of high molecular weight, low dosage, low scum yield, high flocculation capacity, easiness in floc separation and good oil removal and suspended matter removal ...

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Номер записи: 2