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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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25-11-2009 дата публикации

Method for leaching chalcopyrite and corresponding leaching agent

Номер: CN0101586186A

Автор: YIXIN HUA, TIEGUANG DONG, QIBO ZHANG, CUNYING XU, GUOCAI TIAN, YAN CUI, YAN LI, QIFEI PEI, HUA YIXIN, DONG TIEGUANG, ZHANG QIBO, XU CUNYING, TIAN GUOCAI, CUI YAN, LI YAN, PEI QIFEI

Принадлежит:

The invention relates to a method for leaching chalcopyrite and corresponding leaching agent, belonging to the metallurgy technical field. The invention mainly adopts dihydroimidazol phosphate ion liquid ([BMIM]H2PO[4]) as leaching agent, matching with certain partial pressure of oxygen to leach the chalcopyrite, the leaching temperature is between 50 DEG C and 90 DEG C; the leaching pressure is normal pressure; the chalcopyrite granularity is between 100 and 200 meshes; the leaching time is 6-12 hours, the leaching rate of the copper is more than 95 %. The effect of the invention is that the reactor of the invention need not high temperature and high pressure devices, without adding catalyst or oxidizer, the impurity content in the leaching solution is less. the wastage of the leaching agent during leaching is less, the separation of the copper and the impurity is easy, the leaching agent can be used circularly, the production costs and the pollution can be reduced.

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Номер записи: 1

05-02-2014 дата публикации

Method and device for stretching optical fiber preform rod

Номер: CN103553325A

Автор: XIAO HUA, LI YAOFEI, SHEN ZHENQIANG, TIAN GUOCAI, TU JIANBIN, ZHANG XIANPING, XU CHUAN, SHI YAN

Принадлежит:

The invention relates to a method and a device for stretching an optical fiber preform rod. The device comprises an RIC rod which is formed by combining a quartz sleeve and a quartz core rod, wherein an upper handle of the RIC rod is clamped and fixed by an upper clamp; a lower handle is clamped and fixed by a lower clamp; the upper clamp, the lower clamp and a heating furnace can be moved up and down; in a stretching process, heat is generated by moving the heating the furnace from top to bottom, the upper clamp moves upwards and the lower clamp moves downwards to provide stretching force. The heating furnace is moved from top to bottom at a speed of V1; and meanwhile, the upper clamp moves upwards at the speed of V2, and the lower clamp moves at the speed of V3 for stretching the softened RIC rod, so that the optical fiber preform rod is produced.

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Номер записи: 2

08-10-2014 дата публикации

Grilled lamp, sedimentation device and method for improving density of loosened body of optical fiber precast rod

Номер: CN104086080A

Автор: ZHAO FENGKUO, TIAN GUOCAI, JIANG PING, XIAO HUA, WANG YOUBING, TU JIANBIN

Принадлежит:

The invention discloses a grilled lamp, a sedimentation device and a method for improving density of a loosened body of an optical fiber precast rod. The sedimentation device comprises the grilled lamp and two sedimentation blowing lamps, wherein the two sedimentation blowing lamps are positioned in the same vertical plane; the second sedimentation blowing lamp is positioned above the first sedimentation blowing lamp; the grilled lamp is not positioned in the vertical plane and arranged on the inclined upper part of the second sedimentation blowing lamp along a rotation direction of the loosened body of the optical fiber precast rod. When the grilled lamp and the two sedimentation blowing lamps meet the condition that (c-b) is more than or equal to 0 and less than or equal to (b-a), a, b and c are the heights of a sedimentation point of the first sedimentation blowing lamp, a sedimentation point of the second sedimentation blowing lamp having a distance away from the bottom end of the loosened ...

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Номер записи: 3

13-06-2023 дата публикации

Pressure stress optical fiber and manufacturing process thereof

Номер: CN116261683A

Автор: ZHANG GONGHUI, CHEN WEI, ZHU YONGGANG, YAN YONGHU, SUN WEI, LAO XUEGANG, TIAN GUOCAI, XIAO HUA, WANG LIN, LI YONGTONG, ZHOU ZHONGKAI, HAO CHANGPING, SONG JUN, LU PING, WANG YOUBING, HU FUJIAN, WANG YALING, LUO GAN

Принадлежит:

The invention discloses a compressive stress optical fiber and a manufacturing process thereof. The compressive stress optical fiber comprises a core layer made of silicon dioxide containing 200-400 ppm of alkali ions; the core layer is coated with the inner cladding layer, and the inner cladding layer is made of silicon dioxide containing 5000 ppm to 10000 ppm of fluorine ions; the auxiliary layer is coated on the inner coating layer and is made of silicon dioxide containing halogen ions of 13000ppm to 20000ppm; and the prefabricated stress layer coats the auxiliary layer and is made of silicon dioxide containing 5ppm-20ppm of aluminum ions.

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Номер записи: 4

23-04-2014 дата публикации

Production method for optical fiber preform conical head

Номер: CN103739193A

Автор: REN ZHENHUA, XIAO HUA, SHEN ZHENQIANG, LI YAOFEI, ZHANG XIANPING, LI XIAODONG, TIAN GUOCAI, SHI YAN

Принадлежит:

A production method for an optical fiber preform conical head comprises: choosing an optical fiber preform with a residual conical head and with a tail rod or a tail tube, wherein the external diameter of the optical fiber preform is n; cutting off the tip portion of the residual conical head from the position with a diameter of m which is also the diameter of an assistant quartz rod; respectively clamping the residual conical head of the optical fiber preform with the tail rod or the tail tube and the assistant quartz rod to clamping heads at two ends, calcining until the residual conical head and the quartz rod are softened, performing butt joint, and cooling; performing cutting on a butt-joint portion between the tail rod or the tail tube and the residual conical head of the optical fiber preform; respectively clamping the optical fiber preform with the external diameter of n and the optical fiber preform residual conical head with the assistant quartz rod to clamping heads at two ends ...

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Номер записи: 5

25-07-2012 дата публикации

Номер: CN103658637A

Автор: LI JIAN, KE PINGCHAO, HUA YIXIN, XU CUNYING, TIAN GUOCAI, ZHANG QIBO, LI YAN, ZHANG YUAN, WANG ZHEN, ZHANG ZHI

Принадлежит:

The invention relates to a method for preparing arborization fine copper powder in an electrolysis mode and belongs to the technical field of preparing nonferrous metal hydrometallurgy and metal powder materials. Firstly, choline chloride and urea are used for preparing eutecticevaporate solvent type ionic liquid, an additive is added into the eutecticevaporate solvent type ionic liquid and an electrolyte is prepared; pure copper serving as an anode and a titanium sheet serving a cathode are added into the obtained electrolyte to be electrolyzed for 30-120 minutes, namely arborization fine copper powder is obtained on the cathode; the obtained arborization fine copper powder is taken off the cathode, cleaned and dried through vacuum and arborization fine copper powder with the granularity ranging from 1-10 microns is obtained. By means of the method for preparing the arborization fine copper powder in the electrolysis mode, cuprous oxide does not need to be added into the ionic liquid, ...

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Номер записи: 12