Blast furnace slag modification method

[0017] Example 1

[0018] Embodiment 1 of the present invention provides a method for modifying blast furnace slag, comprising the following steps:

[0019] S1, dropwise the hydrochloric acid that concentration is 2mol / L in blast furnace slag raw soil, and fully magnetic stirring 30min, obtain mixture, wherein, the material-to-liquid ratio of blast furnace slag raw soil and hydrochloric acid is 1g:10mL;

[0020] S2, in the mixture obtained in S1, add templating agent CTBA (hexadecyltrimethylamine bromide) and fully magnetically stir for 30min to dissolve, then place the mixture that has dissolved CTBA in the reactor to carry out hydrothermal reaction, hydrothermal The reaction temperature was 160°C, and the reaction time was 16h, wherein the molar ratio of CTBA to blast furnace slag original soil was 2:8;

[0021] S3, cooling the product after the hydrothermal reaction to room temperature, then suction filtration, washing and drying to obtain modified blast furnace slag.

[0022] Example 2

[0023] Embodiment 2 of the present invention provides a method for modifying blast furnace slag, comprising the following steps:

[0024] S1, dropwise the hydrochloric acid that concentration is 1mol / L in blast furnace slag raw soil, and fully magnetic stirring 20min, obtain mixture, wherein, the material-to-liquid ratio of blast furnace slag raw soil and hydrochloric acid is 1g:5mL;

[0025] S2. Add templating agent CTBA to the mixture obtained in S1 and fully magnetically stir for 20min to dissolve, then place the CTBA-dissolved mixture in a reactor for hydrothermal reaction, the hydrothermal reaction temperature is 140°C, and the reaction time is 12h , wherein the molar ratio of CTBA to blast furnace slag raw soil is 2:6;

[0026] S3, cooling the product after the hydrothermal reaction to room temperature, then suction filtration, washing and drying to obtain modified blast furnace slag.

[0027] Example 3

[0028] Embodiment 3 of the present invention provides a method for modifying blast furnace slag, comprising the following steps:

[0029] S1, dropwise the hydrochloric acid that concentration is 5mol / L in blast furnace slag raw soil, and fully magnetic stirring 20min, obtain mixture, wherein, the material-to-liquid ratio of blast furnace slag raw soil and hydrochloric acid is 1g:15mL;

[0030] S2. Add templating agent CTBA to the mixture obtained in S1 and fully magnetically stir for 40min to dissolve, then place the CTBA-dissolved mixture in a reactor for hydrothermal reaction, the hydrothermal reaction temperature is 180°C, and the reaction time is 20h , wherein the molar ratio of CTBA to blast furnace slag raw soil is 2:10;

[0031] S3, cooling the product after the hydrothermal reaction to room temperature, then suction filtration, washing and drying to obtain modified blast furnace slag.