Development of a co-precipitation process for the preparation of magnesium hydroxide containing lithium carbonate from Li-enriched brines

Quintero, Celso; Dalhkamp, Matthias J.; Fierro, Felipe.; Thennis, Troy; Zhang, Yinzhi; Videla Alvaro; Rojas, René

Keywords: Mg(OH)2 containing lithium carbonate, Co-precipitation process, Controlled Mg removal, Li-enriched brines

Abstract

Ongoing research to develop a new generation of materials to achieve a more reliable and higher energy density lithium-ion batteries has attracted working groups attention worldwide in academia and industry. Products like lithium carbonate or lithium hydroxide are fundamental as the main feedstock for future materials. Recently, metal-atom substituted cathode materials with various metals has proved to improve the life-time, stability and performance of cathodes and consequently of the batteries. In this regard, this publication describes an approach to remove calcium impurities from industrial Lithium-rich brines with oxalic acid. Moreover, the present magnesium is reduced by the precipitation of magnesium hydroxide in a controlled manner in order to obtain a Lithium-enriched brine with a well-defined magnesium concentration in the absence of calcium. Finally, a process is presented to produce high purity lithium carbonate with controlled concentrations of magnesium between 1% to 3% as magnesium hydroxide. The magnesium hydroxide containing lithium carbonate is produced in a co-precipitation step, where initially the magnesium hydroxide is precipitated and subsequently the lithium carbonate is precipitated in a one-pot process.

Más información

Título de la Revista: HYDROMETALLURGY
Volumen: 198
Editorial: Elsevier
Fecha de publicación: 2020
Página de inicio: 105515
Idioma: Ingles
URL: https://pdf.sciencedirectassets.com/271762/1-s2.0-S0304386X20X00089/1-s2.0-S0304386X20308872/main.pdf?X-Amz-Date=20210806T184948Z&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Signature=b7234f695837302451e00c5d083136e9506322ea346517d4807af0772674d533&X-Amz-Credential=ASIAQ3PHCVTYRO2W5VGH%2F20210806%2Fus-east-1%2Fs3%2Faws4_request&type=client&tid=prr-144d1da0-9b03-43e7-a2ee-09093d425190&sid=7c5863b017de5242d1386fa739024dcc8774gxrqa&pii=S0304386X20308872&X-Amz-SignedHeaders=host&X-Amz-Security-Token=IQoJb3JpZ2luX2VjEEsaCXVzLWVhc3QtMSJGMEQCIBBrGYgpKdoAJvz6OktI50EMG4F3l77rzU6NwOzdw7%2BgAiAwrA8ath2stXX4rOF%2FlmdpPjF0%2BCIjlVttm2ZMqd1h4yr6AwhjEAQaDDA1OTAwMzU0Njg2NSIMvbD4wpLfIVsYg4RNKtcDZRq%2BsMUS80TPA7sxjDk4uyY8kkgUE%2BzkLjDoxEmTFgamSj1cpz%2FIVlJ7hbwp%2BdNP91IXTkVcmZpRtoU4Q0h%2BcfMp76BlBwYiif7hlRs6zSTBcVMD02kC5JpElT0TD9deIWjmLx6MaVFH%2BOIIBt%2Bu9lh%2FmVAowql2uWi9e4RQbmLeO0HMUnluTPxJTult8qVDkRCiMDBIkX6ta74TNZ53r0i2k%2B5Rq%2Fw5JUDm3Swe5cga6rNO7o9VkA5ATHAspmzhcBmf7i33xUc21nPUsQwBMknhZlnthMkUHxeTKE%2FCm8tPPgW3OG%2BoFfcu0MQp9ETIQpbWEO9%2Fmt8wLkg3bCGI1SfUF8as7qUxQkvBcCEmWP2%2FRRa1xqQFiUlDOBZQ5%2BVfCfkMeEcnBUD7S5zWW3U%2BWX4f1KPk6qabE2qNrAzw4y41X0pzdfpP1rQDt6VYcLimxSBFsNKrpRC3yFNe%2F9FkygJKSB5G1Q1CId%2FrJE80P607%2FQ6croO3zoC43tTJDdQ%2Fohaa0zLbCbSApLEYwBzpKkuJr946i7VYFkru3XBMiWD7sym2JiZyR0bP3RIXC19RkKPiiSWCgVnTDBLTqv1WoeS%2BkarpRKa6PlYVAxkg7L59%2FnpS7q0dMMf5tYgGOqYBuh0xrOFgLptY3Xi%2BzpiScCKCLpAM1cIsVxh%2FoCsIBVkR6JwjZ%2F6ZNjcnb13AO0QJ8kbSXCWlxgnbzzxOYJsHy8rSWMbzATsqYAGgzIwzdAl%2FnObMN6X955lK1jyVlsXyBHBkdhbPaKrUc14quXhMF4xdkqNvu%2BFfe8fGmPgrTGamsq2fny9CtATq1TQS43lpUZplkFHwE%2BcpgZAvuXkGN9l6aK7ujA%3D%3D&host=68042c943591013ac2b2430a89b270f6af2c76d8dfd086a07176afe7c76c2c61&X-Amz-Expires=300&hash=74003d1597ede4e91a2d189d6473c20cd1ec693d33708d2541452ceed6d03cfb
Notas: Impact factor: 4.156