Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for comprehensively utilizing red mud
The invention relates to the technical field of environmental protection, in particular to a method for comprehensively utilizing red mud. The method comprises the following steps: mixing red mud, sodium carbonate, calcium oxide and coke powder, carrying out reduction roasting in a reducing atmosphere, cooling the obtained roasted material in water, and filtering to obtain filtrate and cooling slag; the filtrate contains sodium aluminate and is used for preparing aluminum oxide; the cooling slag is subjected to ore grinding and screening, and fine ore materials are obtained; the fine mineral aggregate is subjected to low-intensity magnetic separation, a strong magnetic material and first tailings are obtained, and the strong magnetic material is high-grade elemental iron; the first tailings are subjected to strong magnetic separation, weakly magnetic materials and second tailings are obtained, and the weakly magnetic materials are titaniferous magnetite; the second tailings are subjected to flotation, and titanium dioxide and third tailings are obtained; the third tailings comprise calcium silicate; and drying and finely grinding the third tailings to obtain the cement mixture. According to the method, Fe can be efficiently recycled, resource utilization of the Fe element is achieved, and resource utilization of other valuable elements in the red mud can be achieved.
本发明涉及环保技术领域，具体涉及一种赤泥综合利用的方法。本发明将赤泥、纯碱、氧化钙和焦粉混合，在还原气氛下进行还原焙烧，将所得焙烧物料置于水中冷却，过滤，得到滤液和冷却渣；所述滤液包含铝酸钠，用于氧化铝制备；将所述冷却渣进行磨矿和筛分，得到细矿料；将所述细矿料进行弱磁选，得到强磁性物料和第一尾渣，强磁物料为高品位单质铁；将所述第一尾渣进行强磁选，得到弱磁性物料和第二尾渣，弱磁性物料为含钛磁铁矿；将所述第二尾渣进行浮选，得到二氧化钛和第三尾渣；所述第三尾渣包括硅酸钙；将所述第三尾渣烘干细磨做水泥拌合料。本发明不仅能够高效回收Fe，实现Fe元素的资源化利用，而且还能够实现赤泥中其他有价元素的资源化利用。
Method for comprehensively utilizing red mud
The invention relates to the technical field of environmental protection, in particular to a method for comprehensively utilizing red mud. The method comprises the following steps: mixing red mud, sodium carbonate, calcium oxide and coke powder, carrying out reduction roasting in a reducing atmosphere, cooling the obtained roasted material in water, and filtering to obtain filtrate and cooling slag; the filtrate contains sodium aluminate and is used for preparing aluminum oxide; the cooling slag is subjected to ore grinding and screening, and fine ore materials are obtained; the fine mineral aggregate is subjected to low-intensity magnetic separation, a strong magnetic material and first tailings are obtained, and the strong magnetic material is high-grade elemental iron; the first tailings are subjected to strong magnetic separation, weakly magnetic materials and second tailings are obtained, and the weakly magnetic materials are titaniferous magnetite; the second tailings are subjected to flotation, and titanium dioxide and third tailings are obtained; the third tailings comprise calcium silicate; and drying and finely grinding the third tailings to obtain the cement mixture. According to the method, Fe can be efficiently recycled, resource utilization of the Fe element is achieved, and resource utilization of other valuable elements in the red mud can be achieved.
本发明涉及环保技术领域，具体涉及一种赤泥综合利用的方法。本发明将赤泥、纯碱、氧化钙和焦粉混合，在还原气氛下进行还原焙烧，将所得焙烧物料置于水中冷却，过滤，得到滤液和冷却渣；所述滤液包含铝酸钠，用于氧化铝制备；将所述冷却渣进行磨矿和筛分，得到细矿料；将所述细矿料进行弱磁选，得到强磁性物料和第一尾渣，强磁物料为高品位单质铁；将所述第一尾渣进行强磁选，得到弱磁性物料和第二尾渣，弱磁性物料为含钛磁铁矿；将所述第二尾渣进行浮选，得到二氧化钛和第三尾渣；所述第三尾渣包括硅酸钙；将所述第三尾渣烘干细磨做水泥拌合料。本发明不仅能够高效回收Fe，实现Fe元素的资源化利用，而且还能够实现赤泥中其他有价元素的资源化利用。
Method for comprehensively utilizing red mud
一种赤泥综合利用的方法
LIU BUYOU (Autor:in) / SUN YUMEI (Autor:in) / LIU KAIYUAN (Autor:in)
13.12.2024
Patent
Elektronische Ressource
Chinesisch
Method for comprehensively utilizing sodium fluosilicate production wastewater
| Europäisches Patentamt | 2023