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Preparation of boric acid, calcium carbonate and sodium nitrate involves taking sodium borate ore, washing, adding boric acid-sodium nitrate mother liquor and nitric acid, leaching, precipitating, evaporating, crystallizing and separating. 专利
申请日期: 2013-01-01, 公开日期: 2013-10-16
作者:  WANG H ZHONG J ZHU J
收藏  |  浏览/下载:4/0  |  提交时间:2019/12/13
Fully automatic multi-station ore conveying device for use in smelting industry, has planetary gear speed reducer driven by three-phase braking motor through chain, and car frame arranged on track of travel switch. 专利
申请日期: 2013-01-01, 公开日期: 2013-05-01
作者:  FU Y LI T CUI J LI G LIU D WANG N
收藏  |  浏览/下载:4/0  |  提交时间:2019/12/13


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