Process for controlling particle size of nano calcium carbonate for sulfur fixation by alternating magnetic field
A nano-calcium carbonate and alternating magnetic field technology, which is applied in the field of technology, can solve the problems that the particle size of nano-calcium carbonate is difficult to precisely control, cannot produce solid sulfur, and has a narrow distribution, so as to improve the reaction performance of solid sulfur and improve dimensional stability. the effect of broadening the application field
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specific Embodiment approach 1
[0021] This embodiment adopts following process steps:
[0022] 1. Limestone (CaCO 3 ) calcined to obtain calcium oxide and CO 2 ;
[0023] 2. Add water to dissolve calcium oxide and generate suspended calcium hydroxide;
[0024] 3. Use multi-stage hydrocyclone separation to remove particles and impurities to obtain calcium hydroxide suspension;
[0025] 4. Increase the alternating magnetic field outside the reactor;
[0026] 5. The calcium hydroxide solution flows through the alternating magnetic field at a speed of 12m / s. At the same time, from the main channel of the calcium hydroxide solution, the branch trace solution enters the microscope observation range;
[0027] 6. Slowly release the CO 2 The gas is passed into the calcium hydroxide solution, and the flow of CO is controlled by a flow meter. 2 The flow rate of the gas, the moment when the microscopic crystals appear is the moderate CO 2 gas flow. maintain this CO 2 Gas flow until crystallization is complete....
specific Embodiment approach 2
[0029] This embodiment adopts following process steps:
[0030] 1. Limestone (CaCO 3 ) calcined to obtain calcium oxide and CO 2 ;
[0031] 2. Add water to dissolve calcium oxide and generate suspended calcium hydroxide;
[0032] 3. Use multi-stage hydrocyclone separation to remove particles and impurities to obtain calcium hydroxide suspension;
[0033] 4. Increase the alternating magnetic field outside the reactor;
[0034] 5. The calcium hydroxide solution flows through the alternating magnetic field at a speed of 13m / s, and at the same time, from the main channel of the calcium hydroxide solution, the branch trace solution enters the microscope observation range;
[0035] 6. Slowly release the CO 2 The gas is passed into the calcium hydroxide solution, and the flow of CO is controlled by a flow meter. 2 The flow rate of the gas, the moment when the microscopic crystals appear is the moderate CO 2 gas flow. maintain this CO 2 Gas flow until crystallization is compl...
specific Embodiment approach 3
[0037] This embodiment adopts following process steps:
[0038] 1. Limestone (CaCO 3 ) calcined to obtain calcium oxide and CO 2 ;
[0039] 2. Add water to dissolve calcium oxide and generate suspended calcium hydroxide;
[0040] 3. Use multi-stage hydrocyclone separation to remove particles and impurities to obtain calcium hydroxide suspension;
[0041] 4. Increase the alternating magnetic field outside the reactor;
[0042] 5. The calcium hydroxide solution flows through the alternating magnetic field at a speed of 14m / s, and at the same time, from the main channel of the calcium hydroxide solution, the branch trace solution enters the microscope observation range;
[0043] 6. Slowly release the CO 2 The gas is passed into the calcium hydroxide solution, and the flow of CO is controlled by a flow meter. 2 The flow rate of the gas, the moment when the microscopic crystals appear is the moderate CO 2 gas flow. maintain this CO 2 Gas flow until crystallization is compl...
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