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The manufacturing method
of tricalcium phosphate
1. Introduction
Tricalcium phosphate (TCP) is an important chemical raw material, widely used in food, medicine, agriculture and other fields. Due to its unique physical and chemical properties, the manufacturing method of tricalcium phosphate has attracted much attention. This paper will introduce the manufacturing method of tricalcium phosphate in detail, including the reaction principle, process flow, equipment selection and so on.
2. Reaction Principle The manufacture of
tricalcium phosphate is mainly realized through chemical reaction. The main reaction principle is as follows:
3Ca(OH)2 2H3PO4 → Ca3(PO4)2 6 H2O
, that is, calcium hydroxide (Ca(OH)2) reacts with phosphoric acid (H3PO4) to generate tricalcium phosphate (Ca3(PO4)2) and water (H2O) under certain conditions.
3. process
tricalcium phosphate manufacturing process mainly includes the following steps:
1 ingredients: according to a certain proportion of calcium hydroxide and phosphoric acid into the reactor.
2. Reaction: Heat and stir in a reaction kettle to fully react calcium hydroxide and phosphoric acid to generate tricalcium phosphate.
3. Separation: The tricalcium phosphate formed by the reaction is separated from the remaining calcium hydroxide and phosphoric acid.
4. washing: wash tricalcium phosphate with water to remove impurities on the surface.
5. Drying: The washed tricalcium phosphate is dried to obtain a finished product.
4. equipment selection
in the manufacturing process of tricalcium phosphate, need to use the following equipment:
1. reaction kettle: used for ingredients and reaction, need to have heating and stirring function.
2. Separation equipment: used to separate the generated tricalcium phosphate from the remaining calcium hydroxide and phosphoric acid, which can be filtered or centrifuged.
3. Washing equipment: used for washing tricalcium phosphate, stirring or spraying can be used.
4. Drying equipment: used for drying the washed tricalcium phosphate, which can be dried by oven or air flow.
5. operation precautions
In the manufacturing process of tricalcium phosphate, the following operation matters need to be paid attention to:
1. Control the proportion of ingredients to ensure that the reaction generates tricalcium phosphate.
2. During the reaction, a certain temperature and stirring speed should be maintained to ensure that the reaction is fully carried out.
3. When separating, it is necessary to ensure that the tricalcium phosphate is completely separated from the remaining calcium hydroxide and phosphoric acid to avoid impurities mixed into the finished product.
4. When washing, control the temperature and flow of washing water to avoid excessive loss of tricalcium phosphate.
5. When drying, control the temperature and wind speed to avoid the agglomeration or deterioration of tricalcium phosphate.
6. conclusion
tricalcium phosphate as an important raw material for chemical production, its manufacturing method involves chemical reaction, process flow and equipment selection. In the actual operation process, it is necessary to control the operating parameters and precautions of each link to ensure product quality and production safety.