Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing ceramsite from oily sludge
The invention relates to a method for preparing ceramsite from oily sludge, and belongs to the technical field of sludge treatment.The ceramsite is prepared through the following steps that the oily sludge is subjected to pyrolysis treatment to obtain pyrolysis residues, the pyrolysis residues, pulverized coal, fly ash, a binder and a pore forming agent are mixed, dried and smashed to obtain powder, water is added into the powder, and the mixture is stirred to be uniform; performing granulation, drying, preheating and sintering treatment to obtain ceramsite; wherein the binder is prepared from kaolin, potassium feldspar, silica powder and calcium carbonate, pyrolysis residues are obtained through pyrolysis, the oily sludge is subjected to pyrolysis, the content of SiO2 in the pyrolysis residues is increased while oily components are recycled, and the strength of the prepared ceramsite is improved; pulverized coal in the raw materials is solid fuel; the fly ash is a supplementary material of pyrolysis residue calcination loss; the binder is used for improving the bonding strength of all the components during calcination; the pore-forming agent can be decomposed during high-temperature calcination, so that a pore structure is generated, and finally, the ceramsite with light weight and excellent strength is prepared.
本发明涉及一种利用含油污泥制备陶粒的方法，属于污泥处理技术领域，所述陶粒由以下步骤制得：含油污泥经热解处理得热解残渣，将热解残渣、煤粉、粉煤灰、粘结剂和造孔剂混合、烘干和粉碎，得粉体，向粉体中加水，再经造粒、烘干、预热和烧结处理，得陶粒；其中，粘结剂由高岭土、钾长石、硅微粉和碳酸钙制备而得，本发明通过热解得热解残渣，对含油污泥进行热解，回收了油质组分的同时提高了热解残渣的SiO2的含量，有助于提高制得的陶粒的强度；原料中的煤粉为固体燃料；粉煤灰为热解残渣煅烧失料的补充料；粘结剂用于提高煅烧时各组分的粘结强度；造孔剂在高温煅烧时会发生分解，使产生孔洞结构，最终制得轻质和强度优良的陶粒。
Method for preparing ceramsite from oily sludge
The invention relates to a method for preparing ceramsite from oily sludge, and belongs to the technical field of sludge treatment.The ceramsite is prepared through the following steps that the oily sludge is subjected to pyrolysis treatment to obtain pyrolysis residues, the pyrolysis residues, pulverized coal, fly ash, a binder and a pore forming agent are mixed, dried and smashed to obtain powder, water is added into the powder, and the mixture is stirred to be uniform; performing granulation, drying, preheating and sintering treatment to obtain ceramsite; wherein the binder is prepared from kaolin, potassium feldspar, silica powder and calcium carbonate, pyrolysis residues are obtained through pyrolysis, the oily sludge is subjected to pyrolysis, the content of SiO2 in the pyrolysis residues is increased while oily components are recycled, and the strength of the prepared ceramsite is improved; pulverized coal in the raw materials is solid fuel; the fly ash is a supplementary material of pyrolysis residue calcination loss; the binder is used for improving the bonding strength of all the components during calcination; the pore-forming agent can be decomposed during high-temperature calcination, so that a pore structure is generated, and finally, the ceramsite with light weight and excellent strength is prepared.
本发明涉及一种利用含油污泥制备陶粒的方法，属于污泥处理技术领域，所述陶粒由以下步骤制得：含油污泥经热解处理得热解残渣，将热解残渣、煤粉、粉煤灰、粘结剂和造孔剂混合、烘干和粉碎，得粉体，向粉体中加水，再经造粒、烘干、预热和烧结处理，得陶粒；其中，粘结剂由高岭土、钾长石、硅微粉和碳酸钙制备而得，本发明通过热解得热解残渣，对含油污泥进行热解，回收了油质组分的同时提高了热解残渣的SiO2的含量，有助于提高制得的陶粒的强度；原料中的煤粉为固体燃料；粉煤灰为热解残渣煅烧失料的补充料；粘结剂用于提高煅烧时各组分的粘结强度；造孔剂在高温煅烧时会发生分解，使产生孔洞结构，最终制得轻质和强度优良的陶粒。
Method for preparing ceramsite from oily sludge
一种利用含油污泥制备陶粒的方法
ZHOU QIYIN (Autor:in) / GAO HAN (Autor:in) / ZHAO JUN (Autor:in) / GAO MAOLIN (Autor:in)
21.10.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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