A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to the technical field of oil field drilling fluid and well cementation, and discloses a preparation method of spherical metal mineral powder. The preparation method comprises the following steps: (1) mixing the metal mineral powder with compressed gas in a venturi mixer to obtain a mixture, and the compressed gas is compressed gas with combustion supporting property; and (2)conveying the mixture into a combustor, spraying the mixture from a nozzle of the combustor, enabling the mixture to be in contact with fuel for combustion, and condensing to obtain the spherical metal mineral powder. According to the method, bonding and aggregation among metal ore particles can be prevented in the melting process, the particle size of the metal ore powder is remarkably reduced,the spheroidization rate and the spheroidization degree of the metal ore powder are improved, and the prepared spherical metal ore powder can be used as a weighting agent to be applied to the fields of cement paste, spacer fluid, drilling fluid and the like.
本发明涉及油田钻井液及固井技术领域，公开了一种球形金属矿粉的制备方法，包括以下步骤：(1)在文丘里混合器中，将所述金属矿粉与压缩气体进行混合，得到混合料，所述压缩气体为压缩的具有助燃性的气体；(2)将所述混合料传输至燃烧器中，并从燃烧器的喷嘴喷出，与燃料接触进行燃烧，冷凝后得到球形金属矿粉。该方法能够防止熔融过程中，金属矿颗粒之间的黏结和聚集，显著降低了金属矿粉的粒径，并提高了金属矿粉的球化率以及球化度，制得的球形金属矿粉能够作为加重剂用于水泥浆、隔离液和钻井液等领域。
The invention relates to the technical field of oil field drilling fluid and well cementation, and discloses a preparation method of spherical metal mineral powder. The preparation method comprises the following steps: (1) mixing the metal mineral powder with compressed gas in a venturi mixer to obtain a mixture, and the compressed gas is compressed gas with combustion supporting property; and (2)conveying the mixture into a combustor, spraying the mixture from a nozzle of the combustor, enabling the mixture to be in contact with fuel for combustion, and condensing to obtain the spherical metal mineral powder. According to the method, bonding and aggregation among metal ore particles can be prevented in the melting process, the particle size of the metal ore powder is remarkably reduced,the spheroidization rate and the spheroidization degree of the metal ore powder are improved, and the prepared spherical metal ore powder can be used as a weighting agent to be applied to the fields of cement paste, spacer fluid, drilling fluid and the like.
本发明涉及油田钻井液及固井技术领域，公开了一种球形金属矿粉的制备方法，包括以下步骤：(1)在文丘里混合器中，将所述金属矿粉与压缩气体进行混合，得到混合料，所述压缩气体为压缩的具有助燃性的气体；(2)将所述混合料传输至燃烧器中，并从燃烧器的喷嘴喷出，与燃料接触进行燃烧，冷凝后得到球形金属矿粉。该方法能够防止熔融过程中，金属矿颗粒之间的黏结和聚集，显著降低了金属矿粉的粒径，并提高了金属矿粉的球化率以及球化度，制得的球形金属矿粉能够作为加重剂用于水泥浆、隔离液和钻井液等领域。
Spherical metal mineral powder, preparation method and application thereof and cement paste composition
球形金属矿粉及其制备方法与应用以及水泥浆组合物
2021-01-29
Patent
Electronic Resource
Chinese
Solid waste utilization superfine mineral powder cement paste and preparation method thereof
| European Patent Office | 2024
Cement paste composition, cement paste as well as preparation method and application of cement paste
| European Patent Office | 2024
| European Patent Office | 2021
| European Patent Office | 2020
Influence of Mineral Composition of Cement on Chemical Shrinkage of Cement Paste
| British Library Conference Proceedings | 1998