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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.
30-05-2023 дата публикации

Dressing and smelting combined process for recovering high-sulfur wrapped gold in gold tailings

Номер: CN116174141A
Автор: YANG WEI, LONG TAO, DENG SHA, YE JINQIU, WANG WENTAO
Принадлежит:

A beneficiation and metallurgy combined process for recovering high-sulfur wrapped gold in gold tailings is characterized in that acidic copper sulfate is added into the gold tailings to improve the floatability of the mineral surface, xanthate mixed collecting agents are used in a matched mode to enhance the collecting capacity and selectivity of the agents, and a two-section roughing pre-enrichment process is adopted to recover the high-sulfur wrapped gold in the gold tailings. Wrapping gold and a small amount of bare gold and intergranular gold in the gold tailings can be completely collected; acidified water glass is added into the rough concentrate to serve as an inhibitor of silicate and calcium-magnesium gangue minerals, then sodium carbonate and sodium cyanide are sequentially added for sulfur-inhibiting concentration, metal sulfide ore is inhibited, the grade of the gold concentrate is improved, and it is guaranteed that a part of qualified gold concentrate products are obtained ...

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Номер записи: 1
18-07-2023 дата публикации

Step-by-step decomposition type online tension adjusting system for printed products

Номер: CN116443640A
Автор: CHENG LINGLING, ZHU WENBIN, GAO YANG, YE JINQIU
Принадлежит:

The invention relates to a step-by-step decomposition type online tension adjusting system for printed products, which comprises an adjusting seat, an adjusting roller unit and a power adjusting unit, the adjusting seat comprises a left seat body and a right seat body, the adjusting roller unit comprises a plurality of adjusting roller groups which are sequentially distributed in the vertical direction, and the adjusting roller groups are arranged on the left seat body and the right seat body in relative movement. The distance formed by the adjusting roller sets from top to bottom is gradually increased or gradually decreased, the fall among the multiple adjusting rollers of each adjusting roller set is synchronously corrected, the horizontal sections of the printed products are kept parallel, and the slopes of the inclined sections are equal. Tension adjustment is conducted through step-by-step decomposition so that the deformation probability of printed products can be low, the printed ...

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Номер записи: 2