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Coarse-grained aggregate prepared by carbon sequestration of high-water-content sludge soil and preparation method of coarse-grained aggregate
The invention discloses a coarse-grained aggregate prepared by carbon sequestration of high-water-content sludge soil and a method thereof.The method comprises the steps that the high-water-content sludge soil and quick lime are mixed in proportion, and after the quick lime is fully cured, the quick lime is in a plastic state; the malleable sludge soil is put into an extrusion type pelletizer to be extruded and compacted, and coarse-grained blanks in corresponding shapes are prepared; and curing the coarse-grained blank in an environment containing CO2 gas, so that the cured lime in the coarse-grained blank fully reacts with the CO2 gas to obtain the coarse-grained aggregate after carbon sequestration. The sludge soil with high water content is taken as the main raw material, so that the cost is low, and energy consumption and carbon emission generated in the dehydration process as well as land occupation and ecological environment pollution caused by filling treatment are avoided; carbon emission in the whole production and preparation process can be remarkably reduced, the greenhouse effect of the earth is relieved, and the prepared coarse-grained aggregate can be applied to the fields of roadbed filler, abutment back filler, lightweight concrete aggregate and the like.
本发明公开了一种由高含水率淤泥土固碳制得的粗粒骨料及其方法，将高含水率的淤泥土和生石灰按照比例混合，待生石灰充分熟化后，使其处于可塑状态；将所述可塑状态的淤泥土投入挤压式造粒机中挤压密实并制成相应形状的粗粒状胚料；将粗粒状胚料放在含CO2气体的环境中养护，使粗粒状胚料内熟化的石灰与CO2气体充分反应，得到固碳后的粗粒骨料。其主要原料为高含水率的淤泥土，成本低廉，避免了其脱水过程产生的能源消耗和碳排放以及堆填处理对土地的占用和对生态环境的污染；可以显著减少整个生产制备过程的碳排放，缓解地球的“温室效应”，制备得到的粗粒骨料可以在路基填料、台背填料、轻质混凝土骨料等领域进行应用。
Coarse-grained aggregate prepared by carbon sequestration of high-water-content sludge soil and preparation method of coarse-grained aggregate
The invention discloses a coarse-grained aggregate prepared by carbon sequestration of high-water-content sludge soil and a method thereof.The method comprises the steps that the high-water-content sludge soil and quick lime are mixed in proportion, and after the quick lime is fully cured, the quick lime is in a plastic state; the malleable sludge soil is put into an extrusion type pelletizer to be extruded and compacted, and coarse-grained blanks in corresponding shapes are prepared; and curing the coarse-grained blank in an environment containing CO2 gas, so that the cured lime in the coarse-grained blank fully reacts with the CO2 gas to obtain the coarse-grained aggregate after carbon sequestration. The sludge soil with high water content is taken as the main raw material, so that the cost is low, and energy consumption and carbon emission generated in the dehydration process as well as land occupation and ecological environment pollution caused by filling treatment are avoided; carbon emission in the whole production and preparation process can be remarkably reduced, the greenhouse effect of the earth is relieved, and the prepared coarse-grained aggregate can be applied to the fields of roadbed filler, abutment back filler, lightweight concrete aggregate and the like.
本发明公开了一种由高含水率淤泥土固碳制得的粗粒骨料及其方法，将高含水率的淤泥土和生石灰按照比例混合，待生石灰充分熟化后，使其处于可塑状态；将所述可塑状态的淤泥土投入挤压式造粒机中挤压密实并制成相应形状的粗粒状胚料；将粗粒状胚料放在含CO2气体的环境中养护，使粗粒状胚料内熟化的石灰与CO2气体充分反应，得到固碳后的粗粒骨料。其主要原料为高含水率的淤泥土，成本低廉，避免了其脱水过程产生的能源消耗和碳排放以及堆填处理对土地的占用和对生态环境的污染；可以显著减少整个生产制备过程的碳排放，缓解地球的“温室效应”，制备得到的粗粒骨料可以在路基填料、台背填料、轻质混凝土骨料等领域进行应用。
Coarse-grained aggregate prepared by carbon sequestration of high-water-content sludge soil and preparation method of coarse-grained aggregate
一种由高含水率淤泥土固碳制得的粗粒骨料及其方法
YAO FENG (author) / SHEN KUNPENG (author) / YE SHEN (author) / ZHANG HUAXIAN (author) / FU CHENGHUI (author) / LYU XINGJUN (author) / ZHANG JINGYI (author) / YANG ZHIXIONG (author) / LI JINGUO (author) / WU JIANDONG (author)
2024-07-09
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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