Fly ash sintered brick and manufacture method thereof
A technology for fly ash and sintered bricks, which is applied to clay products, other household appliances, building components, etc., can solve the problems of uneven surface, small cracks, peeling, etc., and achieves good thermal insulation performance, not easy to peel, and low cost. Effect
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[0025] figure 1 It is a schematic flow chart of the preparation method of the fly ash sintered brick of the present invention. Such as figure 1 As shown, the method includes the following steps:
[0026] Step 10, take fly ash, bentonite and aggregate and grind them separately, and take 70% to 80% of fly ash, 5% to 8% of bentonite and 15% to 22% of aggregate to transport to the batching machine, and then transported to the mixer by a conveyor, add water accounting for 20% to 25% of the total mass of fly ash, bentonite and aggregate for stirring.
[0027] The step 10 is further divided into two steps of material preparation and batching, wherein the material preparation includes selecting fly ash, bentonite and aggregate.
[0028] The preparation process of fly ash is as follows:
[0029] Retrieve the fly ash from the power plant, transport it to the material storage yard, let it dehydrate naturally to below 20%, and require the SiO in the fly ash 2 The content of ≥40%, SO ...
example 1
[0051] 70% of fly ash, 8% of bentonite and 22% of aggregate were tested according to mass percentage, wherein the aggregate contained 66% of coal gangue and 44% of ironmaking slag according to its mass percentage.
[0052]First, weigh 7.0 kg of fly ash, 0.8 kg of sodium-based bentonite (if there is no sodium-based bentonite, calcium-based bentonite can be used instead), 1.45 kg of coal gangue and 0.75 kg of ironmaking slag are transported to the batching machine, and then passed After the conveyor is transported to the high-speed twin-shaft mixer, 2.05 kg of water is added for mixing; then, the mixed material is transported to the rolling machine for rolling for 10 minutes; then, the rolled material is piled up on the site for 1 day for aging , until the moisture content of the material is ≤20% when extruded into a billet; then, after the material is matured, under the condition of a pressure of 1.8 MPa and a moisture content of the material ≤20%, the material is extruded with ...
example 2
[0055] 75% of fly ash, 7% of bentonite and 18% of aggregate were tested according to mass percentage, wherein the aggregate contained 66% of coal gangue and 44% of ironmaking slag according to its mass percentage.
[0056] First, weigh 7.5 kg of fly ash, 0.7 kg of sodium-based bentonite (if there is no sodium-based bentonite, calcium-based bentonite can be used instead), 0.8 kg of coal gangue and 1.0 kg of ironmaking slag are transported to the batching machine, and then passed After the conveyor is transported to the high-speed twin-shaft mixer, 2.3 kg of water is added for mixing; then, the mixed material is transported to the rolling machine for rolling for 10 minutes; then, the rolled material is piled up on the site for 1 day for aging , until the moisture content of the material is ≤20% when extruded into a billet; then, after the material is matured, under the condition of a pressure of 1.8 MPa and a moisture content of the material ≤20%, the material is extruded with a ...
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