Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing cement by utilizing desulfurization slag
The invention relates to the field of building materials, in particular to a method for preparing cement from desulfurization residues. The method comprises the following steps: calcining desulfurization slag, limestone, clay, high-silica soil, iron ore and a cement grinding aid reinforcing agent at high temperature in a rotary kiln to prepare cement; due to the specific high-temperature alkaline atmosphere of the cement kiln and an efficient tail gas treatment and dust collection system, the tail gas discharged from the kiln after high-temperature calcination of the desulfurization slag meets the emission standard; harmful components in the desulfurization slag are cured into cement clinker after being subjected to a mineral firing chemical reaction, and a complicated post-treatment process is not needed; the method for co-processing the solid waste by utilizing the cement kiln is a novel waste processing means, can realize harmless processing of the solid waste while producing the cement clinker, and has the characteristics of low processing cost, strong stability, capability of effectively preventing secondary pollution and the like.
本发明涉及建筑材料领域，具体关于一种利用脱硫渣制备水泥的方法；本方法采用脱硫渣、石灰石、黏土、高硅土、铁矿石、水泥助磨增强剂，经回转窑高温煅烧后，制备水泥；因水泥窑特有的高温碱性气氛和高效的尾气处置收尘系统可使脱硫渣高温煅烧后出窑尾气符合排放标准；脱硫渣中有害成分通过矿物烧成化学反应后被固化到水泥熟料中，无需进行复杂的后处理过程；利用水泥窑协同处置固体废物是一种新的废物处置手段，在进行水泥熟料生产的同时可实现对固体废物的无害化处置，具有处理成本低、稳定性强、可有效防止二次污染等特点。
Method for preparing cement by utilizing desulfurization slag
The invention relates to the field of building materials, in particular to a method for preparing cement from desulfurization residues. The method comprises the following steps: calcining desulfurization slag, limestone, clay, high-silica soil, iron ore and a cement grinding aid reinforcing agent at high temperature in a rotary kiln to prepare cement; due to the specific high-temperature alkaline atmosphere of the cement kiln and an efficient tail gas treatment and dust collection system, the tail gas discharged from the kiln after high-temperature calcination of the desulfurization slag meets the emission standard; harmful components in the desulfurization slag are cured into cement clinker after being subjected to a mineral firing chemical reaction, and a complicated post-treatment process is not needed; the method for co-processing the solid waste by utilizing the cement kiln is a novel waste processing means, can realize harmless processing of the solid waste while producing the cement clinker, and has the characteristics of low processing cost, strong stability, capability of effectively preventing secondary pollution and the like.
本发明涉及建筑材料领域，具体关于一种利用脱硫渣制备水泥的方法；本方法采用脱硫渣、石灰石、黏土、高硅土、铁矿石、水泥助磨增强剂，经回转窑高温煅烧后，制备水泥；因水泥窑特有的高温碱性气氛和高效的尾气处置收尘系统可使脱硫渣高温煅烧后出窑尾气符合排放标准；脱硫渣中有害成分通过矿物烧成化学反应后被固化到水泥熟料中，无需进行复杂的后处理过程；利用水泥窑协同处置固体废物是一种新的废物处置手段，在进行水泥熟料生产的同时可实现对固体废物的无害化处置，具有处理成本低、稳定性强、可有效防止二次污染等特点。
Method for preparing cement by utilizing desulfurization slag
一种利用脱硫渣制备水泥的方法
GUO QIZHENG (Autor:in)
14.04.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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