Production technology and application of calcium hydrophosphate
A technology of calcium hydrogen phosphate and production process, which is applied in the field of calcium hydrogen phosphate preparation, and achieves the effects of simple synthesis process, easy availability of raw materials and little environmental pollution
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Embodiment 1
[0015] 1. Solution preparation:
[0016] Diammonium hydrogen phosphate solution: Concentration: 2.5mol / L
[0017] pH value: 7.6
[0018] Temperature: 30°C
[0019] Calcium chloride solution: Concentration: 2.5mol / L
[0020] pH: 5.0
[0021] Temperature: 30°C
[0022] 2. Synthesis, washing, pulping
[0023] 1. First fill the first synthesis tank (the two synthesis tanks are continuous) with deionized water, and turn on the stirring. Turn on the flowmeters of the diammonium hydrogen phosphate solution and the calcium chloride solution according to requirements, the flow rates are 800L / hour and 840L / hour respectively, and the synthesis temperature is 30°C.
[0024] 2. When the second synthesis tank is filled with slurry, open the belt filter to separate the mother liquor, and start the washing device to wash the cake (calcium hydrogen phosphate dihydrate) to make the cake contain less than 500PPM of chloride ions. The cake falls from the filter cloth into the recycled slur...
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