Process method of comprehensive utilization of fly ash
A process method and technology of fly ash, applied in chemical instruments and methods, wet separation, magnetic separation, etc., to achieve the effects of good wear resistance, significant economic and social benefits, and cost reduction
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Embodiment 1
[0021] Embodiment 1: A process method for comprehensive utilization of fly ash, which includes the following steps:
[0022] 1) The fly ash and water are mixed and stirred at a weight ratio of 1:3.3 to form a fly ash slurry. The fly ash slurry is sent to a magnetic separator through a pipeline for a rough separation, and the material with higher iron content is roughly separated The slurry is transported into the secondary magnetic separator through a pipeline for selection. After two magnetic separations, a magnetic particle slurry and a demagnetized fly ash slurry are obtained. The magnetic particle slurry is filtered and dried to obtain a magnetic bead product;
[0023] 2) The demagnetized fly ash slurry is sent into the air flotation tank, and the density is less than 1g / cm under the agitation of high-pressure air at the bottom of the air flotation tank 3 The floating beads are fully exposed and floating on the water surface, the floating beads are caught with a mechanical scree...
Embodiment 2
[0027] Embodiment 2: A process method for comprehensive utilization of fly ash, which includes the following steps:
[0028] 1) Mix the fly ash and water at a weight ratio of 1:3 to form a fly ash slurry. The fly ash slurry is sent to a magnetic separator through a pipeline for a rough separation, and the material with higher iron content is roughly separated. The slurry is transported into the secondary magnetic separator through a pipeline for selection. After two magnetic separations, a magnetic particle slurry and a demagnetized fly ash slurry are obtained. The magnetic particle slurry is filtered and dried to obtain a magnetic bead product;
[0029] 2) The demagnetized fly ash slurry is sent into the air flotation tank, and the density is less than 1g / cm under the agitation of high-pressure air at the bottom of the air flotation tank 3 The floating beads are fully exposed and floating on the water surface, the floating beads are caught with a mechanical screen, and the caught f...
Embodiment 3
[0033] Embodiment 3: A process method for comprehensive utilization of fly ash, which includes the following steps:
[0034] 1) Mix the fly ash and water in a weight ratio of 1:4 to form a fly ash slurry. The fly ash slurry is sent to a magnetic separator through a pipeline for a rough separation, and the material with a higher iron content is roughly separated. The slurry is transported into the secondary magnetic separator through a pipeline for selection. After two magnetic separations, a magnetic particle slurry and a demagnetized fly ash slurry are obtained. The magnetic particle slurry is filtered and dried to obtain a magnetic bead product;
[0035] 2) The demagnetized fly ash slurry is sent into the air flotation tank, and the density is less than 1g / cm under the agitation of high-pressure air at the bottom of the air flotation tank 3 The floating beads are fully exposed and floating on the water surface, the floating beads are caught with a mechanical screen, and the caught...
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