Method for treating titanium white waste acid by steel slag
A technology of titanium dioxide waste acid and steel slag, which is applied in natural water treatment, water treatment parameter control, chemical instruments and methods, etc., can solve the problems that the sulfuric acid titanium dioxide industry is difficult to develop healthily, and achieve the solution that cannot be achieved at low cost and large-scale The effect of consumption, good promotion prospect and low cost
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Embodiment 1
[0020] Put 100g of sulfuric acid mass percent 20% titanium white waste acid into a closed reactor, add steel slag 11.43g for the first time, the calcium oxide mass percent in the described steel slag is 50%, particle size 60 mesh; The pH value of the mixed material was measured to be 4.3; 11.43 g of high steel slag was added again, and the reaction was stirred at 60°C for 30 minutes. At this time, the pH value of the mixed material was measured to be 7.7; the reaction was stopped and the precipitation was complete for 10 minutes, and the solid phase was separated by filtration and the liquid phase; the liquid phase is directly discharged or returned to be used as industrial water, and the solid phase sediment is washed and dried and thrown to the slag yard.
Embodiment 2
[0022] Put 120g of sulfuric acid mass percent 18% titanium white waste acid in a closed reactor, add 30.86g of steel slag, the mass percent of calcium oxide in the steel slag is 40%, and the particle size is 200 mesh; after stirring and reacting at 30°C for 120 minutes, The measured pH value is 7.9; the reaction is stopped and the precipitation is complete for 8 minutes, and the solid phase and liquid phase are separated by filtration; the liquid phase is directly discharged or returned for use as industrial water, and the solid phase precipitate is washed and dried and then thrown to the slag yard.
Embodiment 3
[0024] The mass percent concentration of sulfuric acid is 22% and 90 g of titanium white waste acid is placed in a closed reactor, and 11 g of steel slag is added. The mass percent of calcium oxide in the steel slag is 35 percent, and the particle size is 200 mesh; after 20 minutes of stirring reaction at 90 ° C, At this time, the pH value of the mixed material was 2.3; 12.33 g of steel slag was added again, and stirred and reacted at 90° C. for 20 minutes. At this time, the pH value of the mixed material was measured to be 4.7; 9.03 g of steel slag was added for the third time, stirred and reacted at 90° C. for 20 minutes. Minutes, at this time the measured pH value is 7.6; stop the reaction and let it stand for 8 minutes to precipitate completely, filter and separate the solid phase and liquid phase; the liquid phase is directly discharged or returned for use as industrial water, and the solid phase precipitate is washed and dried and thrown into the slag field.
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