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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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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2. Отображено 2.
04-08-2023 дата публикации

Combined full-height closed type lifting platform door system

Номер: CN116537672A
Автор: HE JIE, YIN QIN, ZHANG KUN, ZHANG CHANGNENG, GUANG ZHENXIONG, DONG YUNSONG, LEI CHONG, LIU BIPING, ZHOU MINGXIANG, LI JIAQI, LIU HUI, PENG FANGJIN, SUN JI, MENG QINGYU, CHEN XIAO
Принадлежит:

The invention discloses a combined full-height closed lifting type platform door system which comprises a plurality of lifting type platform door units arranged in the longitudinal direction. Each lifting type platform door unit comprises a combined lifting door body, a supporting device and a power device. The supporting device comprises two vertical columns which are adjacent in the longitudinal direction. The combined lifting door body comprises a middle lifting door body and a foundation pit lifting door body, and the middle lifting door body and the foundation pit lifting door body are vertically arranged between the two stand columns up and down. The foundation pit lifting door body is correspondingly provided with a foundation pit, and the middle lifting door body is correspondingly provided with an upper fixing baffle. The power device drives the middle lifting door body and the foundation pit lifting door body to move reversely at the same time or enables the middle lifting door ...

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Номер записи: 1
25-03-2015 дата публикации

Method for preparing zinc-sulfur mineral depressor

Номер: CN104437888A
Автор: WEI ZONGWU, MU XIAO, HUANG YANXIU, PAN FUMEI, LIU BIPING, SHI JIAN, LI YAQI, ZHONG JIANYU
Принадлежит:

A method for preparing a zinc-sulfur mineral depressor comprises the following steps that firstly, phosphoric acid, hydrochloric acid and water are mixed according to the mass ratio of 1-3: 1-2: 10-15 to obtain a solution 1; then sodium benzoate is added to the solution 1 according to the mass ratio of 1-2: 5-15, and the sodium benzoate and the solution 1 are stirred to be dissolved to obtain a solution 2; then sulfate or sulfite dissolved in water is added to the solution 2 according to the mass ratio of 1-2: 3-8, the temperature of the solution 2 is controlled to range from 60 DEG C to 70 DEG C, the stirring reaction is kept for 3-5 hours to obtain a solution 3, the solution 3 is subjected to suction filtration to obtain crystal dope, finally the crystal dope is dried at the temperature ranging from 80 DEG C to 85 DEG C, and the zinc-sulfur mineral depressors are obtained. The method is low in agent consumption, and can restrain zinc-sulfur minerals, and high-quality lead concentrate ...

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Номер записи: 2