Research into the process of preparation of Ukrainian coal by the oil aggregation method

We conducted a study into concentration of Donetsk coal with varying degrees of coalification – anthracite and grade G – by the method of oil aggregation. We determined the character of impact of the following factors on the results of oil aggregation of coal: the ash content of original coal, pulp agitation duration, pulp density, consumption and type of reagent-binder. The research demonstrated a possibility of effective preparation of finely- and thinly dispersed Donetsk coal the size of 0–0.1; 0–1(2) mm and ash content from 10–15 % to 65–70 % by the method of oil aggregation. In this case, it was established that with an increase in the ash content of original coal, the process of oil aggregation displays a capacity of self-leveling. By reducing the speed of aggregation, it is possible to attain practically stable technological results over the entire examined range of ash content of original coal – from 10–15 % to 65–70 %. Obtained results substantiate the possibility of employing the process of oil aggregation for the re-preparation of waste, in particular, waste of flotation and gravitation separation of coal preparation.Досліджено збагачення донецького вугілля різного ступеня вуглефікації масляною агрегацією. Встановлено вплив на результати процесу зольності вугілля, тривалості агітації, густини пульпи, витрат і виду реагенту. Показано можливість ефективного збагачення вугілля крупності 0–0,1 (2) мм, зольності 10–70 % і самовирівнювання масляної агрегації при збільшенні зольності. Обгрунтовано застосування масляної агрегації для перезбагачення відходів флотації

Research into the process of preparation of Ukrainian coal by the oil aggregation method

We conducted a study into concentration of Donetsk coal with varying degrees of coalification – anthracite and grade G – by the method of oil aggregation. We determined the character of impact of the following factors on the results of oil aggregation of coal: the ash content of original coal, pulp agitation duration, pulp density, consumption and type of reagent-binder. The research demonstrated a possibility of effective preparation of finely- and thinly dispersed Donetsk coal the size of 0–0.1; 0–1(2) mm and ash content from 10–15 % to 65–70 % by the method of oil aggregation. In this case, it was established that with an increase in the ash content of original coal, the process of oil aggregation displays a capacity of self-leveling. By reducing the speed of aggregation, it is possible to attain practically stable technological results over the entire examined range of ash content of original coal – from 10–15 % to 65–70 %. Obtained results substantiate the possibility of employing the process of oil aggregation for the re-preparation of waste, in particular, waste of flotation and gravitation separation of coal preparation.Досліджено збагачення донецького вугілля різного ступеня вуглефікації масляною агрегацією. Встановлено вплив на результати процесу зольності вугілля, тривалості агітації, густини пульпи, витрат і виду реагенту. Показано можливість ефективного збагачення вугілля крупності 0–0,1 (2) мм, зольності 10–70 % і самовирівнювання масляної агрегації при збільшенні зольності. Обгрунтовано застосування масляної агрегації для перезбагачення відходів флотації

Morphogenetic basis of the unified state register of soil resources of Russia

Nomenclature and taxonomic diversity of soils and their horizon-profile diagnostics/descriptions define morphogenetic soil indicators used in the Unified State Register of Soil Resources of Russia (with Russian abbreviation of EGRPR). Most of these soil indicators are of non-metric origin, i.e., established conventionally by agreement. Subject area of soil science includes a hierarchy of 5 types of soil objects (pit, profile, horizon, morphological element and sample), 380 indicators, 607 methods and 3019 values of the indicators

Features of the structure of urinary stones in residents of industrially developed regions suffering from oxalate urolithiasis

Minerals of biogenic origin are integral elements of the structure of many living organisms. Along with genetically physiogenic minerals, pathogenic biominerals are also common. These include, in particular, urinary stones — uroliths, which are formed as a result of the development of urolithiasis. Urolithiasis is called the "disease of civilization" for a reason. According to the World Health Organization, the incidence of this disease has increased 1.5 times over the past 12 years. It affects one person in a hundred in the world. For many centuries, information about the symptoms of the disease and methods of its treatment has been accumulated, many issues of mineralogy, in particular, the ontogeny of uroliths, remain insufficiently studied. Today, the ontogeny of minerals is a developed branch of genetic mineralogy. The available information makes it possible to reconstruct the conditions of their genesis and growth based on the external shape and features of the internal structure of minerals and mineral aggregates. The rich experience of researching inorganic compounds can and should be effectively used in biology and medicine to highlight possible mechanisms of biomineralization in processes of pathogenic origin based on their geological analogue

Features of the structure of urate urolithiasis in inhabitants of an industrially developed region

According to the World Health Organization, the incidence of this disease has increased 1.5 times over the past 12 years. It affects one person in a hundred in the world. For many centuries, information about the symptoms of the disease and methods of its treatment has been accumulated, many issues of mineralogy, in particular, the ontogeny of uroliths, remain insufficiently studied. Minerals of biogenic origin are integral elements of the structure of many living organisms. Along with genetically physiogenic minerals, pathogenic biominerals are also common. These include, in particular, urinary stones — uroliths, which are formed as a result of the development of urolithiasis. Urolithiasis is called the "disease of civilization" for a reason. Today, the ontogeny of minerals is a developed branch of genetic mineralogy. The available information makes it possible to reconstruct the conditions of their genesis and growth based on the external shape and features of the internal structure of minerals and mineral aggregates. The rich experience of researching inorganic compounds can and should be effectively used in biology and medicine to highlight possible mechanisms of biomineralization in processes of pathogenic origin based on their geological analoguesBarannyk K., Ishkov V., Molchanov R., Barannyk S