Method for preparing iron phosphate by extracting and separating iron and phosphorus from iron phosphate slag
A technology for iron phosphate and iron separation, applied in chemical instruments and methods, phosphorus compounds, compounds of Group 5/15 elements of the periodic table, etc., can solve problems such as waste of resources
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Embodiment 1
[0035] The present embodiment is a method for preparing iron phosphate by extracting and separating iron and phosphorus from iron phosphate slag, and the method for preparing iron phosphate by extracting and separating iron and phosphorus from iron phosphate slag is prepared by the following steps:
[0036] S1: acid leaching process of iron phosphate slag, adding iron phosphate slag into inorganic acid for leaching, the reaction temperature is 80 °C, the reaction time is 6 h, and the pH of the dissolved solution is kept at 1 to obtain the leaching solution and graphite slag, and the graphite slag is recovered. deal with;
[0037] S2: P204 iron extraction process, the leaching solution is passed through P204 to extract iron, and the number of extraction stages is 5 to obtain organic phase ① and raffinate;
[0038] S3: extracting the extractant, adding an alkaline solution to the raffinate to adjust the pH to 3, and then extracting and removing impurities such as copper and alum...
Embodiment 2
[0046] The present embodiment is a method for preparing iron phosphate by extracting and separating iron and phosphorus from iron phosphate slag, and the method for preparing iron phosphate by extracting and separating iron and phosphorus from iron phosphate slag is prepared by the following steps:
[0047] S1: acid leaching process of iron phosphate slag, adding iron phosphate slag into inorganic acid for leaching, the reaction temperature is 80 °C, the reaction time is 6 h, the pH of the dissolved solution is kept at 1, the leaching solution and graphite slag are obtained, and the graphite slag is recovered. deal with;
[0048] S2: P204 iron extraction process, the leaching solution is passed through P204 for iron extraction, and the number of extraction stages is 20 to obtain organic phase ① and raffinate;
[0049] S3: extracting the extractant, adding an alkaline solution to the raffinate to adjust the pH to 5, and then extracting and removing impurities such as copper and...
Embodiment 3
[0057] The present embodiment is a method for preparing iron phosphate by extracting and separating iron and phosphorus from iron phosphate slag, and the method for preparing iron phosphate by extracting and separating iron and phosphorus from iron phosphate slag is prepared by the following steps:
[0058] S1: Acid leaching process of iron phosphate slag, adding iron phosphate slag into inorganic acid for leaching, the reaction temperature is 25°C, the reaction time is 2h, the pH of the dissolved solution is kept at 1, the leaching solution and graphite slag are obtained, and the graphite slag is recovered. deal with;
[0059] S2: P204 iron extraction process, the leaching solution is passed through P204 for iron extraction, and the number of extraction stages is 15 to obtain organic phase ① and raffinate;
[0060] S3: extracting the extractant, adding an alkaline solution to the raffinate to adjust the pH to 3, and then extracting and removing impurities such as copper and a...
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