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The present invention particularly relates to a method for preparing sludge ceramsite by regenerating pottery sand. The method comprises: pre-heating pottery sand by using tail gas prepared by using ceramsite to achieve a temperature of 60-80 DEG C, adding a uniformly-pre-mixed mixture comprising wet sludge, ceramsite calcining fly ash, ferrous polysilicate, high aluminum cement and a polycarboxylate water reducer according to a corresponding mass ratio, uniformly stirring again, standing for 5-10 min, carrying out plate-type pressure filtration, controlling the moisture content of 15-25%, granulating through a granulator, drying for 9-15 min at a temperature of 100-110 DEG C, pre-firing at a temperature of 500-600 DEG C, and carrying out rapid firing to a temperature of 1200-1250 DEG C. According to the present invention, the method has advantages of high sludge utilization rate, short preparation time, low secondary pollution, and the like.
The present invention particularly relates to a method for preparing sludge ceramsite by regenerating pottery sand. The method comprises: pre-heating pottery sand by using tail gas prepared by using ceramsite to achieve a temperature of 60-80 DEG C, adding a uniformly-pre-mixed mixture comprising wet sludge, ceramsite calcining fly ash, ferrous polysilicate, high aluminum cement and a polycarboxylate water reducer according to a corresponding mass ratio, uniformly stirring again, standing for 5-10 min, carrying out plate-type pressure filtration, controlling the moisture content of 15-25%, granulating through a granulator, drying for 9-15 min at a temperature of 100-110 DEG C, pre-firing at a temperature of 500-600 DEG C, and carrying out rapid firing to a temperature of 1200-1250 DEG C. According to the present invention, the method has advantages of high sludge utilization rate, short preparation time, low secondary pollution, and the like.
Method for preparing sludge ceramsite by regenerating pottery sand and flue dust
YI JURAN (author)
2015-12-23
Patent
Electronic Resource
English
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