Phase transformations of synthetic goethite and goethite ore from Kryvyi Rih region by reducing with different carbohydrates (starch, glucose, fructose, sucrose and ascorbic acid) were investigated by thermomagnetic analysis. Thermomagnetic analysis was carried-out using laboratory device that allows automatic registration of sample magnetization with the temperature (the rate of sample heating/cooling was 65-80°/min). The reduction reaction of synthetic goethite for all carbohydrates starts at the temperature of ~250°C while reduction of goethite ore for all carbohydrates starts at the temperature of ~450°C. We could relate this increasing of reduction start temperature with shielding effect of admixtures in the ore. Reduction of synthetic goethite at this temperature range leads to formation of magnetic phase with saturation magnetisation ~70 A*m 2 /kg. At the same time, reduction of goethite ore leads to formation of magnetic phase with saturation magnetisation ~25 A*m 2 /kg. One could attribute this decreased value of saturation magnetisation to the presence of other minerals (quartz, etc.) in the ore. It was shown by X-Ray Diffraction method that goethite completely transforms into magnetite under heating with different carbohydrates up to 650°C. All carbohydrates reduce goethite to magnetite.
 ñáîðíèêå èçëîaeåíû ìàòåðèàëû ìèíåðàëîãè÷åñêîãî ñåìèíàðà ñ ìåaeäóíàðîäíûì ó÷àñòèåì «Êðèñòàë-ëè÷åñêîå è òâåðäîå íåêðèñòàëëè÷åñêîå ñîñòîÿíèå ìèíåðàëüíîãî âåùåñòâà: ïðîáëåìû ñòðóêòóðèðîâàíèÿ, óïî-ðÿäî÷åíèÿ è ýâîëþöèè ñòðóêòóðû» ïîñâÿùåííûå èçó÷åíèþ ñîâðåìåííîãî ñîñòîÿíèÿ è ôóíäàìåíòàëüíûõ ïðî-áëåì ìèíåðàëîãè÷åñêîé êðèñòàëëîãðàôèè. Îáñóaeäàþòñÿ àêòóàëüíûå ïðîáëåìû ñòðóêòóðíîé óïîðÿäî÷åííîñ-òè êðèñòàëëè÷åñêîãî è òâåðäîãî íåêðèñòàëëè÷åñêîãî ìèíåðàëüíîãî âåùåñòâà. Îñîáîå âíèìàíèå óäåëåíî âîï-ðîñàì êðèñòàëëîìîðôîëîãèè è àíàòîìèè êðèñòàëëîâ, êðèñòàëëîãåíåçèñó, à òàêaeå ýâîëþöèè êðèñòàëëîâ â ãåî-ëîãè÷åñêèõ ïðîöåññàõ è ýêñïåðèìåíòå. Ðàññìàòðèâàþòñÿ àêòóàëüíûå âîïðîñû ñîâðåìåííîé êðèñòàëëîòåõíî-ëîãèè, êðèñòàëëîñèíòåçà, êðèñòàëëîãðàôèè îðãàíè÷åñêèõ ìèíåðàëîâ è áèîìèíåðàëîâ. Îòäåëüíî ðàññìîòðå-íû âîïðîñû ñâÿçàííûå ñ ìåñòîðîaeäåíèÿìè êðèñòàëëîñûðüÿ, ïðîáëåìàìè èõ âûÿâëåíèÿ è ýôôåêòèâíîãî îñ-âîåíèÿ.Ñáîðíèê ïðåäñòàâëÿåò èíòååñ äëÿ øèðîêîãî êðóãà ñïåöèàëèñòîâ åñòåñòâåííî-íàó÷íîãî ïðîôèëÿ.Crystalline and solid non-crystalline state of mineral substance: problems of structuring, ordering and structure evolution: Proceedings of mineralogical seminar with international participation. Syktyvkar: Geoprint, 2012. 364 p.The proceedings of mineralogical seminar with international participation Crystalline and solid non-crystalline state of mineral substance: problems of structuring, ordering and structure evolution, related to the studies of present situation and fundamental problems of mineralogical crystallography, are presented. The actual problems of structural ordering of crystalline and solid non-crystalline mineral substance are discussed. The special emphasis is given to the issues of crystallomorphology and crystal anatomy, crystal genesis and also evolution of crystals in geological processes and experiment. The actual problems of crystal technology, crystal synthesis, crystallography of organic minerals and biominerals are observed. Particularly problems with crystal raw deposits, their exploration and efficient development are considered.The collection represents interest for a wide range of natural scientists. Òåêñòû äîêëàäîâ âîñïðîèçåäåíû â àâòîðñêîé ðåäàêöèè, ñ íåçíà÷èòåëüíîé òåõíè÷åñêîé ïðàâêîé
Термомагнітні дослідження перетворення гематиту на магнетит за впливу активованого вугілля та крохмалю були проведені за допомогою лабораторної установки, що дозволяє автоматичну реєстрацію намагніченості зразка в залежності від температури (нагрів та охолодження проводили зі швидкістю 65-80°/хв). Показано, що відновлення гематиту крохмалем відбувається за температур до 650°С та призводить до отримання магнітного матеріалу з намагніченістю насичення ~50 А*м 2 /кг. Відновлення гематиту вугіллям в такому ж температурному діапазоні призводить до отримання продукту з намагніченістю ~0,5 А*м 2 /кг.Ключові слова: гематит, магнетит, фазові перетворення, термомагнітні дослідження.Термомагнитные исследования превращения гематита в магнетит при влиянии активированного угля и крахмала были проведены с помощью лабораторной установки, которая позволяет автоматическую регистрацию намагниченности образца в зависимости от температуры (нагрев и охлаждение проводили со скоростью 65-80°/мин). Показано, что восстановление гематита крахмалом происходит при температуре до 650°С и приводит к получению магнитного материала с намагниченностью насыщения ~50 А*м 2 /кг. Восстановление гематита углем в таком же температурном диапазоне приводит к получению продукта с намагниченностью ~0,5 А*м 2 /кг.Ключевые слова: гематит, магнетит, фазовые превращения, термомагнитные исследования.Thermomagnetic investigations of hematite into magnetite transformations by activated carbon and starch were carried-out using laboratory facility, that allows automatic registration of sample magnetization with the temperature (the rate of sample heating/cooling was 65-80°/min). It was shown, that reduction of hematite by starch occurs by the temperatures up to 650°С and leads to formation of magnetic material with saturation magnetization ~50 А*m 2 /kg. Reduction of hematite by activated coal in the same temperature range leads to formation of the product with saturation magnetization ~0,5 А*m 2 /kg.
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