富铁矿就地崩解钻孔水力监测参数计算方法的实验研究与开发

Tarasyutin Viktor, Kosenko Andrii, Khomenko Oleh, Kononenko Maksym
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Mine experimental-methodical and experimental-experimental works on: stage-by-stage study of the engineering and geological situation of ore deposits and selection of experimental sites; development of technological schemes for the hydrodisintegration of the ore in place and the creation of appropriate experimental equipment; selection of means for providing hydro-extracting operations; the choice of methods for monitoring and measuring the parameters of the hydrodisintegration process; generalization and analysis of the results of experiments and development of recommendations for the creation of technology and equipment, taking into account the achieved indicators.\n\nResults. A technique for calculating the parameters of hydrodisintegration of rich martite ores martite ore in places has been developed based on the study of the features of the formation of rotating compact water jets by borehole hydromonitors.\n\nScientific novelty. Relationships between the structural and morphological characteristics and jointing of martite ores (porosity, the ratio of the grain composition of the ore, the ultimate uniaxial compression strength of ore and lumpiness) and the parameters of the hydromonitoring effect (water pressure, the initial diameter of the jet and the speed of its movement along the exposure of the face), which make it possible to determine rational technological parameters of hydrodisintegration products.\n\nPractical implication. Borehole hydromonitor disintegration of martite ores in place is a combined ore preparation process, including enrichment grinding operations and classification of destruction products according to their granulometric composition during their erosion. At the same time, there is a selective opening of ore-forming minerals that improve the quality of the ore by 0.5–1.5% compared to natural, a decrease in the mass fraction of silica from 2.0–1.2 to 0.5–0.3%, which ensures the production of iron ore raw materials of the highest quality – superconcentrates with an iron content of 69.0–69.5%. 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Study and development of a rational methodology for calculating the parameters of the process of downhole hydrodisintegration of martite ore massifs by pressure rotating water jets.\\n\\nMethods. Mine experimental-methodical and experimental-experimental works on: stage-by-stage study of the engineering and geological situation of ore deposits and selection of experimental sites; development of technological schemes for the hydrodisintegration of the ore in place and the creation of appropriate experimental equipment; selection of means for providing hydro-extracting operations; the choice of methods for monitoring and measuring the parameters of the hydrodisintegration process; generalization and analysis of the results of experiments and development of recommendations for the creation of technology and equipment, taking into account the achieved indicators.\\n\\nResults. 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引用次数: 0

摘要

目的。研究和发展了一种合理的方法,用于计算压力旋转水射流对铁矿体井下水力崩解过程的参数。矿山试验—方法和试验—试验工作:分阶段研究矿床的工程地质情况和试验场地的选择;制订现有矿石氢解的技术方案,并制造适当的实验设备;提供水萃取操作的手段的选择;氢解过程参数监测方法的选择对实验结果进行归纳和分析,并对技术和设备的创造提出建议,考虑到已达到的指标。通过对钻孔水力监测仪对旋转致密水射流形成特征的研究,提出了一种计算地方富铁矿水力崩解参数的方法。科学的新奇。研究了麻铁矿矿石的结构形态特征与节理(孔隙率、矿石的颗粒组成比、矿石的最终单轴抗压强度和块状度)与水力监测效果参数(水压、射流初始直径及其沿工作面裸露运动速度)之间的关系,为确定合理的水力崩解产物工艺参数提供了可能。实际的含义。钻孔水力监测就地崩解是一个综合的选矿过程,包括富集磨矿操作和根据侵蚀过程中破坏产物的粒度组成进行分类。同时,有选择性地打开成矿矿物,使矿石质量比天然矿石提高0.5-1.5%,使二氧化硅质量分数从2.0-1.2降低到0.5-0.3%,保证了生产铁含量为69.0-69.5%的高质量铁矿原料——超精矿。通过调整射流喷嘴出口的初始水压、射流沿表面暴露的速度以及射流相对于矿石的产状和结构的方向,可以实现对加氢崩解产物粒度组成的控制。
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EXPERIMENTAL RESEARCH AND DEVELOPMENT OF A METHOD FOR CALCULATING THE PARAMETERS OF BOREHOLE HYDROMONITOR DISINTEGRATION OF RICH IRON ORE IN PLACE
Purpose. Study and development of a rational methodology for calculating the parameters of the process of downhole hydrodisintegration of martite ore massifs by pressure rotating water jets. Methods. Mine experimental-methodical and experimental-experimental works on: stage-by-stage study of the engineering and geological situation of ore deposits and selection of experimental sites; development of technological schemes for the hydrodisintegration of the ore in place and the creation of appropriate experimental equipment; selection of means for providing hydro-extracting operations; the choice of methods for monitoring and measuring the parameters of the hydrodisintegration process; generalization and analysis of the results of experiments and development of recommendations for the creation of technology and equipment, taking into account the achieved indicators. Results. A technique for calculating the parameters of hydrodisintegration of rich martite ores martite ore in places has been developed based on the study of the features of the formation of rotating compact water jets by borehole hydromonitors. Scientific novelty. Relationships between the structural and morphological characteristics and jointing of martite ores (porosity, the ratio of the grain composition of the ore, the ultimate uniaxial compression strength of ore and lumpiness) and the parameters of the hydromonitoring effect (water pressure, the initial diameter of the jet and the speed of its movement along the exposure of the face), which make it possible to determine rational technological parameters of hydrodisintegration products. Practical implication. Borehole hydromonitor disintegration of martite ores in place is a combined ore preparation process, including enrichment grinding operations and classification of destruction products according to their granulometric composition during their erosion. At the same time, there is a selective opening of ore-forming minerals that improve the quality of the ore by 0.5–1.5% compared to natural, a decrease in the mass fraction of silica from 2.0–1.2 to 0.5–0.3%, which ensures the production of iron ore raw materials of the highest quality – superconcentrates with an iron content of 69.0–69.5%. Control of the granulometric composition of hydrodisintegration products is achieved by adjusting the initial water pressure at the outlet of the jet nozzle, the speed of the jet along the face exposure and the orientation of the jet relative to the elements of occurrence and texture of the ores.
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