| CERAGREEN CO., LTD. Patent applications |
| Patent application number | Title | Published |
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| 20110173878 | APPARATUS AND METHOD FOR RECYCLING COAL ASH - The present invention relates to an apparatus and method for recycling coal ash, and more particularly to an apparatus and method for recycling coal ash, in which the apparatus for recycling coal ash comprises an unburned coal ash recovery unit and a lightweight aggregate manufacturing unit and is provided in an existing thermoelectric power plant and in which coal ash which is generated in the thermoelectric power plant is completely recycled for specific purposes using the coal ash recycling apparatus. According to the invention, the surrounding environment can be prevented from being contaminated during the transportation of waste to a recycling factory and transportation expenses can be reduced. Moreover, coal ash is completely recycled for specific uses, such that unburned carbon contained in the coal ash can be used. Also, coal ash can be recycled even as concrete admixtures having strict standards. In addition, the present invention can prevent environmental contamination caused by the landfilling of waste and recycle waste, thereby reducing the loss of land and the waste of resources. | 07-21-2011 |
| 20090325781 | METHOD FOR MANUFACTURING AN ARTIFICIAL LIGHTWEIGHT AGGREGATE CONTAINING BOTTOM ASH - The present invention relates to a method for producing an artificial lightweight aggregate containing bottom ash, and more particularly to a method for producing an artificial lightweight aggregate containing bottom ash, the method comprises the steps of: (a) mixing 100 parts by weight of clay and 10-100 parts by weight of bottom ash to obtain a mixture; (b) extrusion-molding the mixture by using an extruder and cutting the extrusion-molded mixture to form a molded article; (c) drying the molded article by using a rotary drier; and (d) Sintering the dried article at 1050-1150° C. for 15-45 minutes to produce the artificial lightweight aggregate. The lightweight aggregate according to the present invention is produced by mixing bottom ash that did not satisfy a desired physical property of an aggregate with clay and dust in an optimum mixture ratio, so that the problem that there is a great deviation in water absorptions of a lightweight aggregates that are mass produced using existing fly ash was solved so as to reduce a deviation in water absorptions depending on a change in the amount of raw material added during mass production, thereby making it possible to produce an artificial lightweight aggregate having uniform water absorption. In addition, bottom ash that was difficult to dispose is disposed in a large quantity and thus the cost required for installation of an ash pond is reduced and the bottom ash is recycled so that the produced artificial lightweight aggregate is economically efficient. Also, it is possible to solve environment-related problems. | 12-31-2009 |
