Production method of composite phosphate
A compound phosphate and production method technology, which is applied in the field of compound phosphate production, can solve the problems of slow dissolution rate, limited use, impact on food safety and production efficiency, etc., and achieve the effect of fast dissolution
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Embodiment 1
[0014] Example 1: Add a nozzle to the cooling section of sodium tripolyphosphate, spray 10% distilled water when the temperature of sodium tripolyphosphate drops to 130-150°C, adjust the cooling speed of phosphate to below 30°C within 30 minutes . Instant compound phosphate can be produced. The instant compound phosphate contains 20% of sodium pyrophosphate, 76% of sodium tripolyphosphate and 4% of sodium orthophosphate.
Embodiment 2
[0015] Example 2: When the temperature of sodium tripolyphosphate is lowered to 80-90°C, add 5% aqueous solution containing 10% sodium hexametaphosphate, keep warm for 30 minutes, and then rapidly lower the temperature. The instant compound phosphate can be produced, and the instant compound phosphate contains 85% sodium tripolyphosphate, 10% sodium pyrophosphate, and the others are orthophosphate and metaphosphate.
Embodiment 3
[0016] Example 3: When the temperature of sodium tripolyphosphate trimerization drops to 90-100°C, add 5% aqueous solution containing 10% sodium hydroxide, and cool down to about 30°C within 50 minutes. The instant compound phosphate can be produced. The instant compound phosphate contains 80% sodium tripolyphosphate, 15% sodium pyrophosphate, the others are orthophosphate and water, and the instant compound phosphate with a pH as high as 11.5.
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