Method for continuously preparing low-cost battery grade ferric phosphate by utilizing iron filings
A ferric orthophosphate, battery-grade technology, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of increasing equipment investment and operating costs, increasing the burden of washing and filtration, and large consumption of deionized water, etc. Achieve the effect of less washing water consumption, easy selection of separation device and fast reaction speed
Active Publication Date: 2016-09-28
云图新能源材料(荆州)有限公司
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Abstract
The invention discloses a method for continuously preparing low-cost battery grade ferric phosphate by utilizing iron filings. The method comprises the following steps: deionized water is pumped into an elevated tank; phosphoric acid is added into the elevated tank to prepare a phosphoric acid solution with the concentration being 20-85%; a hydrogen peroxide solution with the concentration being 6% is prepared in the same manner; the iron filings are added into a reaction kettle, the prepared phosphoric acid solution is added into the reaction kettle through an air-pressure type nozzle mounted at a material inlet of the reaction kettle, intense stirring is performed, and a template agent and a surfactant are added after the iron filings are completely dissolved; the prepared hydrogen peroxide solution is added, and products are extracted, filtered, washed and dried; finally, a battery grade ferric phosphate product is prepared through calcination. Raw materials used in the method are easy to obtain and low in price; the technology is simple, the operation is convenient, and the industrialization can be realized easily. The battery grade ferric phosphate material prepared according to the method has controllable appearance and particle size, the iron-phosphorus ratio ranges from 0.98 to 1.02, the batch stability is good, and the cost is low.
Application Domain
Phosphorus compounds
Technology Topic
IonHydrogen peroxide +8
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