Method for preparing ceramsite from printing and dyeing sludge and sodium silicate alkaline residues in cooperation
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A technology for printing and dyeing sludge and water glass, applied in applications, household appliances, clay products, etc., can solve the problems of low output, less comprehensive utilization, environmental pollution, etc. Effect
Inactive Publication Date: 2019-02-15
XUZHOU ZHONGLIAN CONCRETE CO LTD
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Problems solved by technology
Because of its low yield and less research on comprehensive utilization, there is no effective treatment method at present, and unorganized discharge has caused serious pollution to the environment
Method used
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specific Embodiment 1
[0013] Specific embodiment one, a kind of method that uses printing and dyeing sludge and water glass alkali slag to prepare ceramsite synergistically, it is characterized in that,
[0014] (1) After drying the printing and dyeing sludge and sodium silicate slag in a drying oven at 105 °C for 2 h, they were ground into powder and passed through a 200-mesh sieve;
[0015] (2) Mix and stir the powdered printing and dyeing sludge and sodium silicate slag treated in step (1) with fly ash and water according to the weight ratio of 2:1:1:0.8, and squeeze out the paste after stirring Press into a spherical shape, the diameter of the ball is 10mm;
[0016] (3) Dry the pellets prepared in step (2) naturally at room temperature for 6 hours, and then place them in a drying oven at 105°C for drying;
[0017] (4) Put the balls dried in step (3) in a high-temperature furnace, preheat at 350°C for 20 minutes, and then heat up to the high-temperature section for sintering. The sintering temp...
specific Embodiment 2
[0018] Specific embodiment two: a kind of method that uses printing and dyeing sludge and sodium silicate alkali slag to prepare ceramsite synergistically, it is characterized in that,
[0019] (1) After drying the printing and dyeing sludge and sodium silicate slag in a drying oven at 105 °C for 2 h, they were ground into powder and passed through a 200-mesh sieve;
[0020] (2) Mix and stir the powdered printing and dyeing sludge and sodium silicate slag treated in step (1) with fly ash and water according to the weight ratio of 2:1:1:0.8, and squeeze out the paste after stirring Press into a spherical shape, the diameter of the ball is 10mm;
[0021] (3) Dry the pellets prepared in step (2) naturally at room temperature for 6 hours, and then place them in a drying oven at 105°C for drying;
[0022] (4) Put the balls dried in step (3) in a high-temperature furnace, preheat at 350°C for 20 minutes, and then heat up to the high-temperature section for sintering. The sintering ...
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Abstract
The invention relates to the technical field of ceramsite preparation, in particular to a method for preparing ceramsite from printing and dyeing sludge and sodium silicate alkaline residues in cooperation. According to the method, the printing and dyeing sludge, the sodium silicate alkaline residues and fly ash are taken as raw materials, organic matter in the printing and dyeing sludge is fullyutilized to provide residual heat and serves as an expansion source of the ceramsite, and the process for preparing the ceramsite from the printing and dyeing sludge is improved by regulating granulation performance of the raw materials with the fly ash and the sodium silicate alkaline residues, so that the industrial waste, namely, the printing and dyeing sludge and the sodium silicate alkaline residues, which are different to utilize, are effectively recycled. Besides, the method for preparing the ceramsite from the printing and dyeing sludge and the sodium silicate alkaline residues in cooperation is simple in process, the ceramsite prepared with the method has no cracks on the surface, and the ceramsite has appropriate bulk density and cylinder compressive strength and is suitable forpopularization and use.
Description
technical field [0001] The invention relates to the technical field of ceramsite preparation, in particular to a method for synergistically preparing ceramsite by using printing and dyeing sludge and sodium silicate slag. Background technique [0002] Printing and dyeing sludge is a by-product of printing and dyeing wastewater treatment in textile enterprises. It contains a large amount of organic chemical raw materials, and heavy metal elements such as Cu, Zn, Pb, and Cd also exceed the standard. It has high toxicity and danger, and is listed as national hazardous waste. directory. However, the main chemical composition of printing and dyeing sludge is Fe 2 o 3 、Al 2 o 3 , SiO 2 , CaO, which are close to clay raw materials, using printing and dyeing sludge instead of clay raw materials to prepare ceramsite can solidify heavy metal elements and fully oxidize and decompose organic matter, so as to realize the harmless treatment and resource utilization of printing and dy...
Claims
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Application Information
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