Patent · US Active

Preparation method for nano ferric phosphate with low sulfur content

US12162753B2 · kind B2 · utility

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Inventors

Lingjie Li · Ottawa, CA
Changdong Li · 红钢城街道, CN
Shenghe Tang · Longbeilingcun, CN
Dingshan Ruan · Longbeilingcun, CN
Shuai Han · Lo Wu, CN
Gaorong Huang · Longbeilingcun, CN

Key dates

Filing date	May 27, 2022
Grant date	Dec 10, 2024
Priority date	—
Expiry date	May 27, 2042

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for preparing nano iron phosphate with low sulfur content. The method may include: S1: mixing a phosphorus source and an iron source to obtain a raw material solution, then adding alkali and a surfactant, adjusting a pH, and stirring and reacting to obtain an iron phosphate dihydrate slurry, S2: adding phosphoric acid solution into the iron phosphate dihydrate slurry, adjusting the pH, heating and stirring for aging, and filtering to obtain iron phosphate dihydrate, S3: adding water into the iron phosphate dihydrate for slurrying, and grinding to obtain a ground slurry; and S4: adding the ground slurry into a washing solution to wash, carrying out solid-liquid separation, and calcining a solid phase to obtain the nano iron phosphate with low sulfur content.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.