Steel slag fine powder and biomass activated carbon composite desulfurizer and its preparation method and application
A technology of steel slag micropowder and biomass, which is applied in the direction of separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of large demand for activated carbon, hindrance to industrial application, frequent regeneration, etc., and solve the problem of low desulfurization capacity and Adsorption is reversible, the effect of improving market competitiveness and reducing preparation cost
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Embodiment 1
[0058] Converter hot slag was obtained by soaking the converter slag in water in the hot dumping slag tank, the particle size was 5.48 μm to 104.30 μm, and the chemical composition (mass fraction) was SiO 2 (11.06%), Fe 2 o 3 (24.40%), Al 2 o 3 (2.30%), CaO (46.78%), MgO (5.75%), P 2 o 5 (0.91%), MnO (2.19%), SO 3 (0.23%) and others (6.38%).
[0059] Wash 1000g of discarded walnut shells and dry them at 105°C for 48 hours; take the dried discarded walnut shells and put them into a ball mill, and grind them for 8 hours to obtain waste walnut shell powder. The waste walnut shell powder and phosphoric acid were mixed at a mass ratio of 1:1, and then placed in a vacuum oven with a vacuum degree of -0.08MPa and a temperature of 80°C for activation. The activation time was 4 hours to obtain a biomass activated carbon precursor. The activated carbon precursor was physically activated by microwave heating method, wherein the microwave power was 700W, the activation time was 5mi...
Embodiment 2
[0062] Casting slag, its particle size is 5.04 μm ~ 105.30 μm, and its chemical composition (mass fraction) is SiO 2 (14.75%), Fe 2 o 3 (12.92%), Al 2 o 3 (10.97%), CaO (46.93%), MgO (3.06%), P 2 o 5 (0.50%), MnO (1.67%), SO 3 (1.26%) and others (7.94%).
[0063] Wash 1000g of waste walnut shells and dry them at 100°C for 50 hours; take the dried waste walnut shells and put them into a ball mill, and grind them for 6 hours to obtain waste walnut shell powder. Mix waste walnut shell powder and phosphoric acid solution with a mass fraction of 80% phosphoric acid at a mass ratio of 1:2, and then place it in a vacuum drying oven with a vacuum degree of -0.06MPa and a temperature of 70°C for activation. The activation time is 5h , to obtain biomass activated carbon precursor. The activated carbon precursor was physically activated by microwave heating method, in which the microwave power was 800W and the activation time was 15min, to obtain biomass activated carbon with a p...
Embodiment 3
[0066] Converter drum slag is obtained by drum processing converter slag, its particle size is 2.68 μm to 92.14 μm, and its chemical composition (mass fraction) is SiO 2 (12.31%), Fe 2 o 3 (25.08%), Al 2 o 3 (1.56%), CaO (47.00%), MgO (5.61%), P 2 o 5 (0.99%), MnO (1.80%), SO 3 (0.13%) and others (5.52%).
[0067] Wash 1000g of peanut shells and dry them at 105°C for 48 hours; take the dried discarded peanut shells and put them into a ball mill, and grind them for 8 hours to obtain waste peanut shell powder. Mix waste peanut shell powder and phosphoric acid solution with a mass fraction of 80% phosphoric acid at a mass ratio of 1:3, and then place it in a vacuum drying oven with a vacuum degree of -0.04MPa and a temperature of 100°C for activation, and the activation time is 4h , to obtain biomass activated carbon precursor. The activated carbon precursor was physically activated by microwave heating method, wherein the microwave power was 500W, and the activation time...
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