Composition used for preparing ceramsite, and ceramsite preparation method
A manufacturing method and composition technology, which can be used in applications, clay products, household appliances, etc., can solve problems such as disease transmission, unpleasant odor of sludge, environmental hazards, etc. Effect
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[0048] (2) Preparation, screening and rounding of raw meal balls: the mixed raw materials are pressed into raw meal balls by a press, and the working pressure of the press can be selected as 58.0MPa~62.0MPa, and then the shape of the raw meal balls is adjusted. Screening to screen out raw meal balls with a particle size of 10mm to 25mm. Although they have been carefully screened, the shape of most of the raw meal balls cannot meet the requirements. In order to make the shape of the filter material ceramsite more beautiful, it is rounded into balls. disc rounding;
[0049] (3) Firing of ceramsite:
[0050] Send the rounded raw meal balls into the rotary kiln. In the rotary kiln, the raw meal balls are first heated at a constant rate from room temperature to 260-280°C, kept in this temperature range for 10 minutes, and then heated at 14-16°C Heating at a rate of 1180°C / min to the maximum temperature of 1180°C, keeping at the maximum temperature for 8-10 minutes, then cooling do...
Embodiment 1
[0052] With 40% of the Yellow River sediment, 10% of sludge, 10% of shale and 40% of clay, it is naturally air-dried, first-stage coarse crushed and second-stage finely crushed by a double-roller crusher until the particle size is less than 2mm, and then Stir and homogenize with a two-stage twin-shaft mixer, control the water content of the balls to 24%, form balls through a ball machine, screen out raw material balls with a particle size of 10mm to 25mm, and then round them into ball discs. The melted raw meal balls are sent to the rotary kiln. In the rotary kiln, the raw meal balls are first heated at a constant rate from room temperature to 260-280°C, kept in this temperature range for 10 minutes, and then heated at 14-16°C / min. Heating at the maximum temperature of 1180°C at a high rate, keeping at the maximum temperature for 8-10 minutes, then cooling down to 600-700°C at a rate of 12-14°C / min, and cooling to room temperature naturally to complete the firing of the filter ...
Embodiment 2
[0054] 50% of the Yellow River sediment, 20% of sludge, 20% of shale and 10% of clay are naturally air-dried, first-stage coarse crushed and second-stage finely crushed by a double-roller crusher until the particle size is less than 2mm, and then The two-stage twin-shaft mixer is used for two-stage stirring and homogenization, and the water content of the balls is controlled to be 25%. After being balled by a ball machine, the raw material balls with a particle size of 10mm to 25mm are screened out, and then rounded into balls and disks. Send the rounded raw meal balls into the rotary kiln. In the rotary kiln, the raw meal balls are first heated at a constant rate from room temperature to 260-280°C, kept in this temperature range for 10 minutes, and then heated at 14-16°C Heating at a rate of 1180°C / min to the maximum temperature of 1180°C, keeping at the maximum temperature for 8-10 minutes, then cooling down to 600-700°C at a rate of 12-14°C / min, and cooling to room temperatu...
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