Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 6. Отображено 6.
04-07-2023 дата публикации

Silver refining method for removing tellurium from high-tellurium silver

Номер: CN116377237A
Принадлежит:

The invention belongs to the field of precious metal hydrometallurgy, and particularly relates to a silver refining method for removing tellurium from high-tellurium silver, which comprises the following steps: reacting concentrated nitric acid with high-tellurium silver, filtering after the reaction is completed, adding sodium chloride into a silver nitrate solution, reducing, and filtering to obtain a filter cake, namely reduced silver chloride; adding dilute sulphuric acid into the obtained silver chloride, stirring, adjusting the pH value to be less than 2, and controlling the reaction temperature to be 60-90 DEG C; and then iron powder is added for a reaction, filtering is conducted after the reaction is completed, an obtained filter cake is reduced silver powder, and the tellurium content in the reduced silver powder is smaller than or equal to 0.0008% by mass.

Подробнее
23-06-2023 дата публикации

Method for extracting refined gold and refined silver from tellurium-containing gold-silver alloy

Номер: CN116287752A
Принадлежит:

The invention belongs to the field of precious metal hydrometallurgy, and particularly relates to a method for extracting refined gold and refined silver from tellurium-containing gold-silver alloy, which mainly comprises the following steps: adding nitric acid into the tellurium-containing gold-silver alloy, separating gold and silver by nitric acid, adding hydrochloric acid into filter residues, adding nitric acid, reacting, and reducing to obtain refined gold; adding sodium chloride into the silver nitrate solution obtained after filtration to perform reduction and impurity removal, performing precise filtration after the reaction is finished, and discharging filtrate which is waste liquid; dilute sulphuric acid is added into a filter cake to adjust the pH value to be smaller than 2, and iron powder is added for reduction at the temperature of 60-90 DEG C to obtain refined silver. The gold powder obtained through the method meets the new national standard first gold standard, silver ...

Подробнее
01-07-2015 дата публикации

Stage desorption and electrodeposition method for high gold and silver loaded carbon

Номер: CN104745834A
Принадлежит:

The invention discloses a stage desorption and electrodeposition method for high gold and silver loaded carbon, which comprises two desorption and electrodeposition steps: S1, adding a desorption solution into high gold and silver loaded carbon, and then performing first-stage high-temperature high-pressure cyanide-free desorption and electrodeposition for 3-4 hours at 105-115 DEG C; and S2, after S1, performing second-stage high-temperature high-pressure cyanide-free desorption and electrodeposition for 7-8 hours at 148-152 DEG C to obtain crude gold, crude silver and lean carbon. According to the stage desorption and electrodeposition method for high gold and silver loaded carbon, provided by the embodiment of the invention, the desorption time is relatively short, the desorption rate is high, and the operation process is easy to control.

Подробнее
29-06-2011 дата публикации

Seafood jelly cream and preparation method

Номер: CN0102106566A
Принадлежит:

The invention discloses seafood jelly cream and a preparation method. The seafood contains rich protein, carotene, vitamin and trace elements; the mesona chinensis benth powder contains flavone, polysaccharide, vanillin and trace elements; and the seafood and the mesona chinensis benth powder are combined to prepare cream food, and related technical reports are not discovered at present. The seafood and the mesona chinensis benth powder are combined together to prepare the food cream, namely gelatinous delicious food is prepared by using rich nutrition of the seafood and the characteristics of the mesona chinensis benth powder. When the inherent nutrition and the flavor of the seafood are kept, the product is endowed with new shape and luster, so the product is more convenient and fast to eat, the sensation and the appetite of the product are increased, and the additional value and the commodity value of the product are promoted.

Подробнее
15-08-2023 дата публикации

Rolling type water chestnut peeling device

Номер: CN116584668A
Принадлежит:

The invention relates to the technical field of water chestnut processing equipment, in particular to a rolling type water chestnut peeling device which comprises a workbench, a scraper, a moving plate, two electric push rods, two rotating pieces and two clamping plates. When water chestnuts need to be peeled, the water chestnuts to be processed are conveyed to the position between the two clamping plates through a conveying device; the two electric push rods work to drive the two rotating pieces to get close to each other, the two rotating pieces drive the two clamping plates to get close to each other until the two clamping plates make contact with the horseshoe and clamp and fix the horseshoe, at the moment, the two rotating pieces are started, the two rotating pieces drive the horseshoe on the two clamping plates to rotate, and the horseshoe is peeled in cooperation with a scraper; and meanwhile, the moving plate moves left and right to remove peels on the two sides of the water chestnuts ...

Подробнее
11-07-2012 дата публикации

Seafood jelly cream and preparation method

Номер: CN0102106566B
Принадлежит:

The invention discloses seafood jelly cream and a preparation method. The seafood contains rich protein, carotene, vitamin and trace elements; the mesona chinensis benth powder contains flavone, polysaccharide, vanillin and trace elements; and the seafood and the mesona chinensis benth powder are combined to prepare cream food, and related technical reports are not discovered at present. The seafood and the mesona chinensis benth powder are combined together to prepare the food cream, namely gelatinous delicious food is prepared by using rich nutrition of the seafood and the characteristics of the mesona chinensis benth powder. When the inherent nutrition and the flavor of the seafood are kept, the product is endowed with new shape and luster, so the product is more convenient and fast toeat, the sensation and the appetite of the product are increased, and the additional value and the commodity value of the product are promoted.

Подробнее