Environment-friendly cement taking waste as raw material, and preparation method thereof
A waste and cement technology, applied in cement production and other directions, can solve the problems of unsatisfactory cement performance, insufficient utilization, and failure to reasonably consider the nature of waste, achieving scientific and reasonable treatment methods, solving resource waste, and extensive use. The effect of app promotion value
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[0028] A method for preparing environmentally friendly cement using waste as a raw material, comprising the steps of:
[0029] (1) Waste pretreatment:
[0030] a. Put the sawn wood and crop straw into the reactor at a weight ratio of 1:2~3, raise the temperature in the reactor to 100~110°C, and raise the pressure in the reactor to 6~9MPa. After processing in a high temperature and high pressure environment for 10-12 minutes, quickly release the pressure to normal pressure and take out the mixture A for later use;
[0031] b. Put the mixture A obtained in operation a into the cold plasma equipment, and after cold plasma treatment for 5 to 9 times, place it in a drying oven for drying, and take out the mixture B for later use;
[0032] c. Weigh 40-50 parts of mixture B obtained in operation b, 10-12 parts of fly ash, 12-18 parts of furnace bottom slag, and 3-7 parts of mining waste rock in the pulverizer respectively. Grinding, then mixing the obtained powder and putting it in...
Embodiment 1
[0046] A method for preparing environmentally friendly cement using waste as a raw material, comprising the steps of:
[0047] (1) Waste pretreatment:
[0048] a. Put the sawn wood and crop straw into the reactor at a weight ratio of 1:2, raise the temperature in the reactor to 100°C, raise the pressure in the reactor to 6MPa, and process in this high temperature and high pressure environment for 10 minutes After that, take out the mixture A after rapid depressurization to normal pressure for subsequent use;
[0049] b. Put the mixture A obtained in operation a into the cold plasma equipment, and after 5 times of cold plasma treatment at a power of 1kW, place it in a drying oven for drying, and take out the mixture B for later use;
[0050] c. Weigh 40 parts of mixture B, 10 parts of fly ash, 12 parts of furnace bottom slag, and 3 parts of mining waste rock that are obtained by weighing the corresponding parts of operation b respectively and place them in the pulverizer for g...
Embodiment 2
[0059] A method for preparing environmentally friendly cement using waste as a raw material, comprising the steps of:
[0060] (1) Waste pretreatment:
[0061] a. Put the sawn wood and crop straw into the reactor at a weight ratio of 1:2.5, raise the temperature in the reactor to 105°C, raise the pressure in the reactor to 7.5MPa, and process in this high temperature and high pressure environment After 11 minutes, quickly release the pressure to normal pressure and take out the mixture A for later use;
[0062] b. Put the mixture A obtained in operation a into the cold plasma equipment, and after 7 times of cold plasma treatment at a power of 2kW, place it in a drying oven for drying, and take out the mixture B for later use;
[0063] c. Weigh 45 parts of mixture B, 11 parts of fly ash, 15 parts of furnace bottom slag, and 5 parts of mining waste rock that are obtained by weighing the corresponding parts of operation b respectively and place them in the pulverizer for grindin...
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