A kind of preparation method of high calcium aluminum slag ball
A technology of aluminum slag balls and high calcium, which is applied in the field of molten steel refining and slag adjustment, can solve the problems of large air pollution and high cost of pure aluminum, and achieve the effects of good surface stability, high utilization rate of raw materials and less discharge.
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Embodiment 1
[0037] A preparation method of high calcium aluminum slag ball, comprising the following steps:
[0038] S1: get 100kg of bauxite and pour it into the first reaction tank, add hydrochloric acid to the first reaction tank to submerge the bauxite, and soak it for 4 hours. 2 O 3 The content is 70wt%, and the concentration of hydrochloric acid is 5mol / L;
[0039] S2: the solution in the first reaction tank is filtered and transferred to the second reaction tank, and ammonia gas is introduced into the solution in the second reaction tank until the pH of the solution is to 7;
[0040] S3: pump out the solution in the second reaction tank and dry it in a reactor with a pressure of 4kPa and a temperature of 30°C for 2 hours to obtain NH 4 Cl crystals;
[0041] S4: take out the solid in the second reaction tank and put it into the stirring pot, and add 100kg of limestone, stir evenly and move it to the high-temperature reaction furnace, and calcinate at 900 ° C for 2 hours;
[0042...
Embodiment 2
[0046] A preparation method of high calcium aluminum slag ball, comprising the following steps:
[0047] S1: get 110kg of bauxite and pour it into the first reaction tank, add hydrochloric acid to the first reaction tank to submerge the bauxite, and soak for 4 hours, the Al in the bauxite 2 O 3 The content is 68wt%, and the concentration of hydrochloric acid is 5.3mol / L;
[0048] S2: filter the solution in the first reaction tank and transfer it to the second reaction tank, and feed ammonia gas into the solution in the second reaction tank until the pH of the solution reaches 7.5;
[0049] S3: pump out the solution in the second reaction tank and dry it for 2.5 hours in a reactor with a pressure of 3.5kPa and a temperature of 28°C to obtain NH 4 Cl crystals;
[0050] S4: take out the solid in the second reaction tank and put it into the stirring pot, and add 105kg of limestone, stir evenly and then move to a high-temperature reaction furnace, and calcinate at a temperature ...
Embodiment 3
[0055] A preparation method of high calcium aluminum slag ball, comprising the following steps:
[0056] S1: get 98kg of bauxite and pour it into the first reaction tank, add hydrochloric acid to the first reaction tank to submerge the bauxite, and soak for 4 hours, the Al in the bauxite 2 O 3 The content is 72wt%, and the concentration of hydrochloric acid is 4.8mol / L;
[0057] S2: the solution in the first reaction tank is filtered and transferred to the second reaction tank, and ammonia gas is introduced into the solution in the second reaction tank until the pH of the solution is to 7;
[0058] S3: pump out the solution in the second reaction tank and dry it for 3 hours in a reaction kettle with a pressure of 4.5kPa and a temperature of 35°C to obtain NH 4 Cl crystals;
[0059] S4: take out the solid in the second reaction tank and put it into the stirring pot, and add 95kg of limestone, stir evenly and then move to a high-temperature reaction furnace, and calcinate at ...
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