The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Jul. 27, 2023
PT Esg New Energy Material, Dki Jakarta, ID;
PT Qmb New Energy Materials, Dki Jakarta, ID;
Gem Co., Ltd., Guangdong, CN;
PT Gem Indonesia New Energy Materials, Dki Jakarta, ID;
Satryo Soemantri Brodjonegoro, Dki Jakarta, ID;
Kaihua Xu, Guangdong, CN;
Yi Wang, Dki Jakarta, ID;
Rizky Wanaldi, Dki Jakarta, ID;
Tegar Mukti Aji, Dki Jakarta, ID;
Evan Wahyu Kristiyanto, Dki Jakarta, ID;
Andi Syaputra Hasibuan, Dki Jakarta, ID;
Piyan Rahmadi, Dki Jakarta, ID;
GEM CO., LTD., Shenzhen, CN;
PT GEM INDONESIA NEW ENERGY MATERIALS, Jakarta Selatan, ID;
Abstract
A dynamic optimization method for acid-to-ore ratio in high-pressure leaching of laterite nickel ore includes: obtaining a feed ore composition, a pulp concentration, a pulp flow rate, a leaching temperature and a pulp duration time in an autoclave, and setting a target leaching rate of nickel; setting a flow rate of sulfuric acid; obtaining a relationship between a hydrogen ion concentration in a solution and a reaction time; obtaining a theoretical leaching rate of nickel when a leaching time reaches the pulp duration time in the autoclave; comparing the theoretical leaching rate of nickel with the target leaching rate of nickel; adjusting the set flow rate of the sulfuric acid until the theoretical leaching rate of nickel is equal to the target leaching rate of nickel, calculating a corresponding optimal acid-to-ore ratio; and adjusting an opening degree of a sulfuric acid flow regulating valve of the autoclave.