A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Solid waste treatment and comprehensive utilization method
The invention discloses a solid waste treatment and comprehensive utilization method, and belongs to the field of sodium sulfide alkali residue treatment. According to the method, sodium sulfide alkali residues are calcined at low temperature, so that sodium sulfide components with strong reducibility and strong alkalinity in the alkali residues are oxidized, decomposed and converted into sodium sulfate, meanwhile, other insoluble sulfides in the alkali residues are oxidized and decomposed into soluble sodium salt, and then the calcined alkali residues are subjected to hot water soaking and washing, so that the sodium salt is washed while the sodium sulfide cost in the alkali residues is eliminated; finally, the pH value of the alkaline residue leachate is smaller than 10, the content of alkaline residue water-soluble salt is smaller than 5%, CaO, MgO, Al2O3, Fe2O3 and SiO2 in the alkaline residues are enriched, the cement production filler requirement is met, the alkaline residues are produced into cement or other building materials such as baking-free bricks, the purpose that the alkaline residues are completely treated and comprehensively utilized is achieved, and the method has the positive effects in the aspects of environmental protection, safety and economical efficiency.
本发明公开了一种固废处理综合利用的方法，属于硫化碱碱渣处理领域。本发明将硫化碱渣通过低温煅烧，使碱渣中强还原性及强碱性的硫化钠成分被氧化分解转化为硫酸钠，同时碱渣中其它不溶性的硫化物被氧化分解为可溶性钠盐，再将煅烧碱渣热浸水洗，消除碱渣中硫化钠成本同时洗涤钠盐，最终碱渣浸出液pH值小于10，碱渣水溶盐成分小于5%，使碱渣中CaO、MgO、Al2O3、Fe2O3、SiO2成分富集，符合水泥生产填料要求，碱渣被生产为水泥或者其它免烧砖等建筑材料，达到碱渣被完全处理并综合利用的目的，在环保、安全、经济性方面均有积极效果。
Solid waste treatment and comprehensive utilization method
The invention discloses a solid waste treatment and comprehensive utilization method, and belongs to the field of sodium sulfide alkali residue treatment. According to the method, sodium sulfide alkali residues are calcined at low temperature, so that sodium sulfide components with strong reducibility and strong alkalinity in the alkali residues are oxidized, decomposed and converted into sodium sulfate, meanwhile, other insoluble sulfides in the alkali residues are oxidized and decomposed into soluble sodium salt, and then the calcined alkali residues are subjected to hot water soaking and washing, so that the sodium salt is washed while the sodium sulfide cost in the alkali residues is eliminated; finally, the pH value of the alkaline residue leachate is smaller than 10, the content of alkaline residue water-soluble salt is smaller than 5%, CaO, MgO, Al2O3, Fe2O3 and SiO2 in the alkaline residues are enriched, the cement production filler requirement is met, the alkaline residues are produced into cement or other building materials such as baking-free bricks, the purpose that the alkaline residues are completely treated and comprehensively utilized is achieved, and the method has the positive effects in the aspects of environmental protection, safety and economical efficiency.
本发明公开了一种固废处理综合利用的方法，属于硫化碱碱渣处理领域。本发明将硫化碱渣通过低温煅烧，使碱渣中强还原性及强碱性的硫化钠成分被氧化分解转化为硫酸钠，同时碱渣中其它不溶性的硫化物被氧化分解为可溶性钠盐，再将煅烧碱渣热浸水洗，消除碱渣中硫化钠成本同时洗涤钠盐，最终碱渣浸出液pH值小于10，碱渣水溶盐成分小于5%，使碱渣中CaO、MgO、Al2O3、Fe2O3、SiO2成分富集，符合水泥生产填料要求，碱渣被生产为水泥或者其它免烧砖等建筑材料，达到碱渣被完全处理并综合利用的目的，在环保、安全、经济性方面均有积极效果。
Solid waste treatment and comprehensive utilization method
一种固废处理综合利用的方法
ZHANG ZHONGYUAN (author) / NIU HONG (author) / XIE XIZHI (author) / PANG XINGGUI (author) / ZHU ZI (author)
2021-05-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Tailing solid waste comprehensive treatment and utilization method
| European Patent Office | 2021
Comprehensive utilization and treatment process for solid waste coal
European Patent Office | 2021
Comprehensive utilization process of coal gangue in solid waste treatment
| European Patent Office | 2023
Bulk solid waste comprehensive resource utilization technical method
| European Patent Office | 2020
Industrial solid waste full-cycle comprehensive utilization process method
| European Patent Office | 2022