NOVELTY - Treating oil shale semi-coke comprises e.g. grinding oil shale semi-coke, adding hydrochloric acid, placing in a closed reactor, reacting, cooling to room temperature, subjecting to solid-liquid separation, repeating the operation, using deionized water to wash until neutral, and combining solution to obtain solution A, adding sodium hydroxide solution to the solids, reacting, cooling, subjecting to solid liquid separation, repeating the operation, washing, and combining the solution to obtain B solution, obtaining solid carbon material C, and freezing the solid carbon material C.    USE - The method is useful for treating oil shale semi-coke (claimed).    ADVANTAGE - The method: adopts the microwave assistance and acid/alkali fractionation mode to separate three components of aluminum, silicon and carbon with higher purity; uses the three components as raw materials to further prepare calcium silicate hydrate, activated carbon and hydrotalcite-like oxide high-added-value products; and achieves the harmlessness and the functional utilization of the industrial waste-oil shale semi-coke.    DETAILED DESCRIPTION - Treating oil shale semi-coke comprises (i) grinding 10 g oil shale semi-coke into particle diameter of less than 45 mu m, adding 100-200 ml 2 M hydrochloric acid, placing in a closed reactor, reacting at 150-250 degrees C under microwave power of 700-1400 W and pressure of 30-60 bar for 100-300 minutes, cooling to room temperature, subjecting to solid-liquid separation, repeating the operation for 3-5 times, using deionized water to wash until neutral, and combining solution to obtain solution A, (ii) adding 100-200 ml 30% sodium hydroxide solution to the solids, reacting at 150-250 degrees C for 100-300 minutes under microwave power of 700-1400 W and pressure of 30-60 bar, cooling to room temperature, subjecting to solid liquid separation, repeating the operation for 3-5 times, using deionized water to wash until neutrality occurs, and combining the solution to obtain B solution, obtaining solid carbon material C, placing the solid carbon material C in a refrigerator, freezing at -40- to -80 degrees C for 4-8 hours, and freeze-drying for 24-48 hours, (iii) adding 3-8 g zinc chloride and 5-15 g ferric chloride according to each g of solid carbon material, then adding 20 ml deionized water, evaporating to dryness at 110 degrees C, under nitrogen protection, sintering at 550-1100 degrees C for 1-3 hours, cooling to room temperature, subjecting the sintered solid material D to ultrasonic treatment for 100-500 minutes, separating, using 20 ml 0.5 M hydrochloric acid for cleaning the solids, using deionized water to wash to be neutral, and combining the solution to obtain solution E, centrifuging to obtain activated coal F, placing the activated coal F in the refrigerator, freezing at -40 to -80 degrees C for 4-8 hours, and freeze-drying for 24-48 hours, (iv) added zinc chloride to the solution E, adjusting (zinc and iron) and aluminum mol ratio to 2-5, raising temperature to 40 degrees C, mechanically stirring, using 1 M sodium hydroxide for adjusting solution pH to 6, adding 0.5 2 times of sodium carbonate based on number of moles of aluminum atoms, using 1 M sodium hydroxide for adjusting the solution pH to 10-11, stirring for 0.5 hours, placing in a hydro-thermal kettle, carrying out hydrothermal reaction at 100-150 degrees C for 12-24 hours, using deionized water for washing, drying, under nitrogen protection condition, and sintering at 350 degrees C for 2-6 hours, and (v) using 1 M hydrochloric acid for adjusting pH value to be 11- 13, according to quantity of silicon and calcium substance as 0.5-1, adding to the solution B, stirring for 3-5 hours, slowly dropping calcium chloride or calcium nitrate, filtering under atmospheric pressure condition, using deionized water to wash for many times, keeping the solution of sample, which is not filtered during filtering and washing process, if the sample contains little amount of deionized water, then freezing at -5 to -20 degrees C for 24 hours, then placing in the refrigerator, freezing at -40 to -80 degrees C for 4-8 hours, and freeze-drying for 24-48 hours.