A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention relates to superfine spherical manganese oxide as well as a preparation method and application thereof. The preparation method mainly comprises the following steps: 1) selecting high-quality manganese oxide with Mn content of more than or equal to 65% and density of more than or equal to 4.6 g/cm < 3 > as a raw material; 2) impurity removal and drying of manganese oxide powder are carried out, so that the water content is less than or equal to 1.0%, and the content of water-soluble alkali metal (based on calcium) in the manganese oxide powder is less than or equal to 100mg/kg; (3) carrying out airflow superfine grinding on the manganese oxide powder; (4) selecting and grading the manganese oxide powder, and screening out the manganese oxide powder with the particle size of less than or equal to 20 microns; 5) carrying out surface modification treatment on the screened manganese oxide powder; according to the superfine spherical manganese oxide powder obtained through the method, the particle size distribution D50 is smaller than 6 micrometers, the particle size distribution D90 is smaller than 20.0 micrometers, and an electron microscope image shows that the surface of the manganese oxide powder is smooth, and the sphericity degree is good; the high-density cement paste prepared by adding 10-30% of the manganese oxide powder can obviously improve the rheological property of the cement paste, reduce the friction resistance of the cement paste and improve the displacement efficiency, and meanwhile, set cement is higher in strength and more compact, and is beneficial to improving the well cementation quality.
本发明涉及一种超细球形氧化锰及其制备方法及应用，该制备方法主要由1)精选Mn含量≥65％，密度≥4.6g/cm3的优质氧化锰为原料；2)氧化锰粉的除杂和干燥，使水分含量≤1.0％，氧化锰粉中水溶性碱金属(以钙计)含量≤100mg/kg；3)氧化锰粉气流超微粉碎；4)氧化锰粉选粉分级，筛分出粒径≤20μm的氧化锰粉；5)对筛分出来的氧化锰粉进行表面改性处理；6)氧化锰粉高温球化炉球化六个步骤组成，该方法获得的超细球形氧化锰粉，粒径分布D50＜6μm，D90＜20.0μm，电镜图像显示氧化锰粉表面光滑，球形度好；加入10％～30％该氧化锰粉制备的高密度水泥浆，可明显改善水泥浆流变性能，降低水泥浆摩阻，提高顶替效率，同时水泥石强度更高、更致密，有利于提高固井质量。
The invention relates to superfine spherical manganese oxide as well as a preparation method and application thereof. The preparation method mainly comprises the following steps: 1) selecting high-quality manganese oxide with Mn content of more than or equal to 65% and density of more than or equal to 4.6 g/cm < 3 > as a raw material; 2) impurity removal and drying of manganese oxide powder are carried out, so that the water content is less than or equal to 1.0%, and the content of water-soluble alkali metal (based on calcium) in the manganese oxide powder is less than or equal to 100mg/kg; (3) carrying out airflow superfine grinding on the manganese oxide powder; (4) selecting and grading the manganese oxide powder, and screening out the manganese oxide powder with the particle size of less than or equal to 20 microns; 5) carrying out surface modification treatment on the screened manganese oxide powder; according to the superfine spherical manganese oxide powder obtained through the method, the particle size distribution D50 is smaller than 6 micrometers, the particle size distribution D90 is smaller than 20.0 micrometers, and an electron microscope image shows that the surface of the manganese oxide powder is smooth, and the sphericity degree is good; the high-density cement paste prepared by adding 10-30% of the manganese oxide powder can obviously improve the rheological property of the cement paste, reduce the friction resistance of the cement paste and improve the displacement efficiency, and meanwhile, set cement is higher in strength and more compact, and is beneficial to improving the well cementation quality.
本发明涉及一种超细球形氧化锰及其制备方法及应用，该制备方法主要由1)精选Mn含量≥65％，密度≥4.6g/cm3的优质氧化锰为原料；2)氧化锰粉的除杂和干燥，使水分含量≤1.0％，氧化锰粉中水溶性碱金属(以钙计)含量≤100mg/kg；3)氧化锰粉气流超微粉碎；4)氧化锰粉选粉分级，筛分出粒径≤20μm的氧化锰粉；5)对筛分出来的氧化锰粉进行表面改性处理；6)氧化锰粉高温球化炉球化六个步骤组成，该方法获得的超细球形氧化锰粉，粒径分布D50＜6μm，D90＜20.0μm，电镜图像显示氧化锰粉表面光滑，球形度好；加入10％～30％该氧化锰粉制备的高密度水泥浆，可明显改善水泥浆流变性能，降低水泥浆摩阻，提高顶替效率，同时水泥石强度更高、更致密，有利于提高固井质量。
Superfine spherical manganese oxide as well as preparation method and application thereof
一种超细球形氧化锰及其制备方法及应用
2024-11-08
Patent
Electronic Resource
Chinese
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