Method for making ceramsite from sludge

A sludge and ceramsite technology, applied in applications, clay products, household appliances, etc., can solve the problems of poor control of the moisture of the mixture, low utilization rate of urban solid waste, and easy failure of equipment, so as to protect farmland and reduce energy consumption. The effect of consumption and avoidance of secondary pollution

Active Publication Date: 2016-04-13
ZOOMLION ENVIRONMENTAL IND CO LTD
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Problems solved by technology

[0006] However, the existing method of making ceramsite from sludge requires a large amount of clay, which will cause certain damage to the environment, and its equipment is prone to failure so that the entire production line is forced to stop production, and the existing method of making ceramsite from sludge If the moisture content of the sludge is not well controlled, the quality of the produced ceramsite is poor, and the moisture of the mixture is not well controlled when it enters the firing process, resulting in high energy consumption and low utilization rate of urban solid waste

Method used

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  • Method for making ceramsite from sludge

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Embodiment Construction

[0022] see Figure 1-2 ,in figure 1 It is a flow chart of the method for utilizing sludge to make ceramsite shown in an embodiment of the present invention; and figure 2 for figure 1 The specific schematic diagram of the method for making ceramsite from sludge is shown.

[0023] Such as Figure 1-2 Shown, the method utilizing sludge of the present invention to make ceramsite comprises:

[0024] Step 110: selecting and mixing raw materials, and the raw materials are composed of sludge, engineering spoils and coal ash;

[0025] When firing ceramsite, the raw materials selected in the present invention are composed of sludge, engineering spoil and coal ash. Among them, the moisture content of the sludge is 80%, while the moisture content of the project spoil is 8.5% to 9.5%. The sludge, project spoil and coal ash in the raw materials are mixed according to the ratio of 10:1:3. The moisture content of the sludge is less than 60%, and the moisture content of the project spoi...

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Abstract

The invention discloses a method for fabricating ceramsite by using sludge. The method is characterized by comprising the following steps: by selecting raw materials, mixing the raw materials, wherein the raw materials comprise sludge, project spoil and coal ash; processing the evenly mixed raw materials into ceramsite by using at least two parallel ceramsite calcined production lines, wherein the moisture content of the sludge in the raw materials is 80% while the moisture content of the project spoil is 8.5-9.5%, the sludge, the project spoil and the coal ash are mixed according to the ratio of the 10:1:3, or the moisture content of the sludge in the raw materials is less than 60% while the moisture content of the project spoil is 8.5-9.5%, and the sludge, the project spoil and the coal ash are mixed according to the ratio of the 2:1:3. Therefore, recycling of the sludge can be achieved by the method for fabricating the ceramsite, a farmland is protected, and resources are saved.

Description

technical field [0001] The invention relates to a method for making ceramsite, in particular to a method for making ceramsite from sludge. Background technique [0002] Urban domestic sewage and industrial wastewater must be treated by sewage treatment plants, and can only be discharged after reaching the national sewage discharge standard. This is an indispensable environmental engineering measure for urban ecological environment construction. Sludge is an accessory after sewage treatment. It is an extremely complex heterogeneous body composed of organic matter, nitrogen, phosphorus, heavy metals, pathogens and ash. It is a type of extremely harmful waste. , if it is not treated and controlled thoroughly, it will cause serious secondary pollution to the environment. [0003] The amount of sludge usually accounts for 0.3%-0.5% (volume) of the amount of sewage. If advanced sewage treatment is adopted, the amount of sludge will increase by 0.5-1 times. At present, domestic s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/22
CPCY02P40/60
Inventor 骆琪胜王雷肖业恒钱云芳李龙
Owner ZOOMLION ENVIRONMENTAL IND CO LTD
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