Method for preparing haydite from wet sludge and incineration fly ash
A technology for incinerating fly ash and ceramsite, applied in applications, ceramic products, household appliances, etc., can solve the problems of restricted popularization and promotion, single disposal object, limited application scope, etc., to achieve large demand in the construction industry and reduce defective products. rate, and the effect of preventing bursting
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[0020] Example 1
[0021] The incineration fly ash in this embodiment comes from the flue gas purification system of Tianjin Shuanggang Waste Incineration Power Plant, and its main chemical components are shown in Table 1.
[0022] Table 1 The main chemical components of incineration fly ash in Tianjin Shuanggang Waste Incineration Power Plant
[0023] chemical composition
[0024] The municipal sludge in this embodiment comes from the dewatered sludge of the sewage treatment plant of Tianjin Economic and Technological Development Zone, with a moisture content of 79.6%, and its main chemical components are shown in Table 2.
[0025] Table 2 Main chemical components of dewatered sludge from sewage treatment plant in Tianjin Economic and Technological Development Zone
[0026] chemical composition
[0027] The bentonite used in this example is in powder form, and its main chemical components are shown in Table 3.
[0028] Table 3 The main chemical components of bentonite
[0029] ...
Example Embodiment
[0034] Example 2
[0035] The incineration fly ash in this embodiment comes from the flue gas purification system of Tianjin Shuanggang Waste Incineration Power Plant, and its main chemical components are shown in Table 1.
[0036] The municipal sludge in this example comes from the dewatered sludge of Tianjin Jizhuangzi Wastewater Treatment Plant, with a moisture content of 81.4%, and its main chemical components are shown in Table 5.
[0037] Table 5 Main chemical components of dewatered sludge from Tianjin Jizhuangzi Wastewater Treatment Plant
[0038] chemical composition
[0039] The bentonite used in this example is in powder form, and its main chemical components are shown in Table 3.
[0040] The dehydrated sludge, fly ash, and bentonite are mixed uniformly according to the mass ratio of 15:5:2, and then extruded with a screw pelletizer; the molding pressure is 6.5MPa, and a cylinder with a diameter of about 2cm and a height of about 1cm is obtained; Dry at 105°C for 180min;...
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