Method for preparing high-purity anhydrous aluminum orthophosphate from solid raw material containing phosphorus and aluminum
A technology of aluminum orthophosphate and solid, which is applied in the field of preparing high-purity anhydrous aluminum orthophosphate, can solve the problems of restricting the large-scale development and utilization of lithium phosphate aluminite, the production cost limit of the application range, etc., to solve the problem of solid waste and solve the problem of disposal Difficult, high-purity effects
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Embodiment 1
[0027] This embodiment provides a method for preparing high-purity anhydrous aluminum orthophosphate from solid raw materials containing aluminum and phosphorus, comprising the following steps:
[0028] (1) Weigh 100g of lithium phosphate aluminum in the reaction kettle, add 1000mL of distilled water and then add 200g of concentrated phosphoric acid (1.874g / mL (liquid state)), the stirring speed is 20r / min, heat up to 80°C under constant stirring, and react for 3h , and filtered to obtain a solution containing phosphorus and aluminum.
[0029] (2) Add 68 g of aluminum hydroxide to the solution containing phosphorus and aluminum, stir evenly, put it in an oven for drying, set the drying temperature at 120° C., and collect a colored solid.
[0030] (3) The above white solid was put into deionized water, beaten and washed twice, filtered, and the filter cake was dried in an oven at 120°C.
[0031] (4) Put the white solid above into a Furnace for calcination at 800°C for 3-5 hour...
Embodiment 2
[0033] This embodiment provides a method for preparing high-purity anhydrous aluminum orthophosphate from solid raw materials containing aluminum and phosphorus, comprising the following steps:
[0034] (1) Weigh 100g of lithium phosphate aluminum into the reaction kettle, add 2000mL of distilled water and then add 200g of concentrated phosphoric acid, stir at 20r / min, heat up to 80°C under constant stirring, react for 3h, and filter to obtain a solution containing phosphorus and aluminum.
[0035] (2) Add 68 g of aluminum hydroxide to the solution containing phosphorus and aluminum and stir evenly to carry out spray drying. The drying temperature is set at 120° C., and a colored solid is collected.
[0036] (3) Put the white solid above into deionized water, beat and wash twice, filter, and dry the filter cake in an oven at 105°C.
[0037] (4) Put the above-mentioned white solid into a Furnace for calcination at 800°C for 3-5 hours to obtain the finished product of aluminum p...
Embodiment 3
[0039] This embodiment provides a method for preparing high-purity anhydrous aluminum orthophosphate from solid raw materials containing aluminum and phosphorus, comprising the following steps:
[0040] (1) Weigh 1000g of lithium phosphatite into a reaction kettle, add 20000mL of distilled water and then add 2000g of concentrated phosphoric acid, stir at 20r / min, heat up to 50°C under constant stirring, react for 3h, and filter to obtain a solution containing phosphorus and aluminum.
[0041] (2) Add 680 g of aluminum hydroxide to the phosphorus and aluminum solution, stir evenly, and spray dry, set the drying temperature at 100° C., and collect to obtain a colored solid.
[0042] (3) Put the white solid above into deionized water, beat and wash twice, filter, and dry the filter cake in an oven at 105°C.
[0043] (4) Put the above-mentioned white solid into a Furnace for calcination at 600°C for 3-5 hours to obtain the finished product of aluminum phosphate.
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Abstract
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