会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Process for production of aluminum hydroxide from ore containing alumina
    • 从含氧化铝的矿石生产氢氧化铝的方法
    • US5545384A
    • 1996-08-13
    • US465620
    • 1995-06-05
    • Takuo HaratoTakahiro IshidaYoshio KumagaeMichikazu InamiKazuhisa IshibashiMitsuaki Murakami
    • Takuo HaratoTakahiro IshidaYoshio KumagaeMichikazu InamiKazuhisa IshibashiMitsuaki Murakami
    • C01F7/06C01F7/47C01F7/00C01F7/02C22B21/00
    • C01F7/062C01F7/47
    • A process for the production of aluminum hydroxide from an alumina-containing ore comprising, in a process for the production of aluminum hydroxide involving extraction of alumina from an alumina-containing ore by an aqueous alkaline solution, supplying a slurry containing the alumina-containing ore at a high solid content which is prepared from a small amount of an alkaline solution together with an aqueous alkaline solution which is so preheated to a temperature that a preheated temperature is enough high to have a temperature after the mixing with the slurry which is higher than an extraction temperature of alumina, simultaneously or after the mixing them, to an extraction apparatus comprising of a tube reactor, extracting alumina from the alumina-containing ore under extraction conditions of a temperature of 120.degree.-160.degree. C. and an extraction time within 10 minutes, separating dissolution residue from an extract solution immediately after the extraction, desilicating the extract solution, and adding seeds of aluminum hydroxide to the extract solution which is desilicated so as to precipitate aluminum hydroxide. By the production process, it is possible to economically produce aluminum hydroxide with little contamination by silica from the alumina-containing ore with a high content of the reactive silica.
    • 一种用于从含氧化铝的矿石生产氢氧化铝的方法,包括在生产氢氧化铝的方法中涉及通过碱性水溶液从含氧化铝的矿石中提取氧化铝,提供含有含氧化铝的矿石 在高固体含量下,由少量的碱性溶液与碱性水溶液一起制备,碱水溶液如此预热至预热温度足够高以使浆料混合后的温度高于 将氧化铝的同时或混合后的提取温度提取到包括管式反应器的提取装置中,在120-116℃的提取条件下从含氧化铝的矿石中提取氧化铝,提取时间在 10分钟后,在提取后立即从提取液中分离出溶解残渣,使提取物脱硅 溶液,并将氢氧化铝的种子加入到脱液的提取液中以沉淀氢氧化铝。 通过生产过程,可以经济地生产具有高含量的反应性二氧化硅的来自含氧化铝的矿石几乎不受二氧化硅污染的氢氧化铝。