Method for preparing ceramsite by utilizing stale garbage

Abstract

The invention provides a comprehensive treatment method for stale garbage. The comprehensive treatment method comprises the steps that 1, garbage screening is conducted through a loading machine; 2, oversize products and undersize products are obtained through primary screening, the oversize products are subjected to manual sorting and magnetic separation, and then ferromagnetic materials and light combustible materials are recycled; the undersize products are subjected to crushing and secondary screening to obtain oversize products and undersize humus soil which are subjected to secondary screening again, the humus soil is taken as a main raw material, light combustible obtained by screening is taken as fuel, and the building material, namely ceramsite, is produced. The production processof the building material ceramsite comprises the following steps: crushing the oversize combustible; mixing the crushed oversize combustible, the crushed undersize humus and auxiliary materials; mixing and pelletizing; drying the pelletized object, sintering at 1200 DEG C, quenching the flue gas in the sintered product, and treating the flue gas in the drying and sintering processes to ensure that the flue gas is discharged after reaching the standard.

Description

technical field

[0001] The invention relates to the technical field of garbage treatment, in particular to a method for preparing ceramsite by using stale garbage. Background technique

[0002] In March 2011, the executive meeting of the State Council proposed "speeding up the treatment of stock waste", which provided policy guidance and support for the mining and utilization of landfill mineralized waste, and the treatment of old waste was also mentioned on the agenda of government departments. This is even more urgent for some cities with a large amount of garbage production, and garbage disposal has entered a new era of simultaneous management of new and old garbage.

[0003] At present, the domestic mining and disposal process is basically the same as the foreign mining process, which can be roughly divided into excavation of garbage dumps, primary screening, and secondary screening. After the primary sieve passes through the magnetic separator to recover ferrous metals...

Examples

specific Embodiment

[0049] In the present embodiment, the rubbish in the area is constituted as follows: the weight of the oversieve is 12% of the gross rubbish, and the weight of the humus soil is 60% of the gross rubbish, which is now calculated as a pile of rubbish with a gross weight of 100 kg Base: industrial rotary kiln for the production of ceramsite, the temperature is 1200 ℃.

[0050] After sieving 100 kilograms of stale garbage, 60 kilograms of humus can be obtained. If 20% of auxiliary materials need to be added, the total weight of materials that can be used to make ceramsite: 60×1.2=72kg.

[0051] The heat required in the production process of ceramsite can be seen in Table 1.

[0052] It can be seen that if all of them are used to make ceramsite, the required heat is: 72×5000=3.6×10 5 kJ.

[0053] According to statistics, the calorific value of humus soil is 1533kJ / kg, and the heat it can provide is: 1533×75=1.15×10 3 kJ.

[0054] After sieving, the total weight of light combust...

technical field

[0001] The invention relates to the technical field of garbage treatment, in particular to a method for preparing ceramsite by using stale garbage. Background technique

[0002] In March 2011, the executive meeting of the State Council proposed "speeding up the treatment of stock waste", which provided policy guidance and support for the mining and utilization of landfill mineralized waste, and the treatment of old waste was also mentioned on the agenda of government departments. This is even more urgent for some cities with a large amount of garbage production, and garbage disposal has entered a new era of simultaneous management of new and old garbage.

[0003] At present, the domestic mining and disposal process is basically the same as the foreign mining process, which can be roughly divided into excavation of garbage dumps, primary screening, and secondary screening. After the primary sieve passes through the magnetic separator to recover ferrous metals...

Examples

specific Embodiment

[0049] In the present embodiment, the rubbish in the area is constituted as follows: the weight of the oversieve is 12% of the gross rubbish, and the weight of the humus soil is 60% of the gross rubbish, which is now calculated as a pile of rubbish with a gross weight of 100 kg Base: industrial rotary kiln for the production of ceramsite, the temperature is 1200 ℃.

[0050] After sieving 100 kilograms of stale garbage, 60 kilograms of humus can be obtained. If 20% of auxiliary materials need to be added, the total weight of materials that can be used to make ceramsite: 60×1.2=72kg.

[0051] The heat required in the production process of ceramsite can be seen in Table 1.

[0052] It can be seen that if all of them are used to make ceramsite, the required heat is: 72×5000=3.6×10 5 kJ.

[0053] According to statistics, the calorific value of humus soil is 1533kJ / kg, and the heat it can provide is: 1533×75=1.15×10 3 kJ.

[0054] After sieving, the total weight of light combust...

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