Method for preparing high-performance insulating brick from solid waste sludge
A high-performance technology for insulating bricks, which is applied in the field of preparing high-performance insulating bricks from solid waste sludge, can solve the problems of low sludge utilization efficiency and poor performance of insulating bricks, and achieve low prices, avoid cracking and deformation, and save energy. resource effect
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Embodiment 1
[0034] The specific steps of using solid waste sludge to prepare high-performance insulation bricks are as follows:
[0035] (1) 10 parts of coal gangue, 15 parts of iron tailings, 7 parts of shale and 3 parts of boron-magnesium mud are mixed and then added to 200 parts of solid waste sludge, and the resulting mixture is stirred evenly to obtain mixed sludge;
[0036] (2) The mixed silt obtained in the step (1) was naturally aired indoors for 2 days, and the average temperature was controlled to be 26 degrees during airing, and the humidity was 70%. The water content in the partially dehydrated mixed silt measured after the air was 29.7%. ; Add 2 parts of quicklime and 3 parts of waste materials in the calcium silicate production process to the partially dehydrated mixed sludge, mix them evenly and put them into a hydroforming machine to make bricks under 30MPa pressure;
[0037] (3) Put the adobe prepared in step (2) into microwave drying equipment for microwave heating and d...
Embodiment 2
[0040] The specific steps of using solid waste sludge to prepare high-performance insulation bricks are as follows:
[0041] (1) After mixing 12 parts of coal gangue, 13 parts of iron tailings, 10 parts of shale and 7 parts of boron-magnesium mud, they were added to 200 parts of solid waste sludge, and the resulting mixture was stirred evenly to obtain mixed sludge;
[0042] (2) The mixed silt obtained in the step (1) was naturally aired indoors for 2 days, and the average temperature was controlled to be 26 degrees during airing, and the humidity was 70%, and the water content in the partially dehydrated mixed silt measured after the air was 29.1%. ; Add 5 parts of quicklime and 8 parts of waste materials in the calcium silicate production process to the mixed sludge after partial dehydration, put it into a hydroforming machine after mixing evenly, and make adobe under 30MPa pressure;
[0043](3) Put the adobe prepared in step (2) into microwave drying equipment for microwave...
Embodiment 3
[0046] The experimental step of using solid waste sludge to prepare high-performance thermal insulation bricks refers to Example 2. The difference is that the amount of waste in the calcium silicate production process in step (2) is adjusted to 2 parts, and the rest of the steps are the same as in Example 2. . According to the national standard GB26538-2011, the prepared insulation bricks were characterized, and the results are as follows: the heat transfer coefficient is 0.14 / W·(m 2 ·K) -1 , the compressive strength is 128kg / cm 3 , the bulk density is 1.39g / cm 3 , The porosity is 73.7%.
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