Mineralogical and technological appraisal of new types of mineral products

Industrial minerals of the Fennoscandian Shield and their contribution to progress in the mineral-raw materials balance of global economy

Vladimir Shchiptsov — Sat, 16 Nov 2019 17:56:13 +0300

The Fennoscandian Shield is a megastructure, which has actively evolved since the early stages of earth crust formation (> 3.5 Ga) and a sequence of geological regimes during subsequent geological evolution paralleled by the formation of various types of industrial mineral deposits. The paper shows the important role of the shield’s industrial minerals in the exploitation of global useful mineral deposits played for decades. The industrial mineral potential and its dependence on socio-economic conditions, environmental requirements and market demand are described.

Artificial waste as a new source of non-ferrous, noble, rare and toxic metals of Almalyk mining and metallurgical combine

Sat, 16 Nov 2019 17:13:05 +0300

The results of the integrated study of metal waste from Almalyk Mining-Metallurgical Plant (AMMP) are reported. Non-ferrous, noble and rare-metal reserves in waste from the dressing and metallurgical conversion of copper-molybdenum and lead-zinc deposits were evaluated. Analysis of the chemical composition and distribution of non-ferrous, noble, rare and toxic metals and their mode of occurrence in artificial waste from AMMP has shown that they are highly complex ores which could be used to increase metal production at AMMP.

Manufacturing finished rare-metal products from natural raw minerals and artificial formations using innovation pyrochemical methods instead of conventional techniques

Gelii Melentyev — Sat, 16 Nov 2019 18:17:27 +0300

The author’s concept, showing the need to manufacture finished chemical and metal-ore products from the various types of Russia’s specialized rare-metal raw materials using direct physico-chemical dressing methods instead of producing mineral concentrates by conventional dressing methods, is presented. Arguments in favour of thermo- and pyrochemical methods for the deep processing of various natural and artificial raw materials using liquation melting, plasma chemistry and pyrolysis, are put forward. Examples, showing the use and efficiency of these methods for processing rare-metal resources, including recommendations for industrial mineral deposits to be exploited and waste from active mining companies, are supplied. The author recommends to revive and develop rare-metal production and to replace foreign products by Russian ones with regard for the increasing role of the state and applied science.

Karelian talc as a raw material: practical application and potential contribution to Russian mineral raw material reserves

Mon, 18 Nov 2019 02:25:42 +0300

Talc is a unique natural material. Some talc-bearing rocks, e.g. soapstone, are also useful minerals. There are talc deposits on the Fennoscandian Shield. The main potential talc resources and reserves are in the Karelian Craton, which is part of the shield. Talc deposits in the Finnish extension of the craton are being mined in the Kainuu Schist Belt and soapstone deposits in the Suomussalmi-Kuhmo Greenstone Belt. The Karelian portion of the craton seems to be more promising for talc-bearing deposits, because favourable rock complexes of greenstone belts are more common there. The revival of Karelia’s economic, scientific and industrial potential for the prospecting, exploration, study, appraisal and exploitation of the talc deposits could provide an impetus to Russsia’s and Karelia’s industrial development on a new higher level.

Mineralogical materials study (manufacturing ceramic products)

Mon, 18 Nov 2019 02:41:58 +0300

Basic mineralogical materials study as a science concerned with the study of the principles of selecting and manufacturing of materials from raw minerals are discussed. The results of the study of ceramic bricks, conducted to forecast blend composition and roasting regime for obtaining the various exploitation properties of the finished product are reported.

Application of the electric pulse disintegration method for obtaining a clean garnet concentrate from mica-garnet schist of West Keyvy

Aleksandr Potokin, Dmitrii Stepenshchikov, Yurii Voytekhovsky — Mon, 18 Nov 2019 03:05:02 +0300

The first to evaluate the possibility of obtaining clean garnet concentrate from the garnet-mica schist of West Keyvy using electric pulse disintegration materials method was shown. After electric pulse disintegration of garnet crystals and washing the garnet product from mica inclusions has managed to get 94% clean garnet fraction –0.5+0.25. There are good prospects for the technical implementation of the proposed technology. The KSC RAS has a rich practical experience in creating demonstration (pilot-industrial) facilities for both opening and extraction of coarse-grained minerals and grinding.

Biotechnological bases of use of natural mineral glauconite in soil-forming processes at development of technogenic massifs and liquidation of enterprises on extraction of minerals

Mon, 18 Nov 2019 03:18:45 +0300

To initiate the process of soil formation, it is necessary to introduce a culture of microorganisms capable of improving mineral nutrition, plant growth and resistance to adverse factors, regardless of the mineralogical composition of the surface. The advantage of the developed methods is the multifunctionality of the sorbent, which is an abiotic catalyst: the dangerous agent binds physically due to the formed fine-porous structure, and chemically due to the ion exchange processes occurring due to the nature of the layered glauconite silicate. The viability of immobilized glauconite bacterial cells of Agrobacterium radiobacter 204, Rhizobium leguminosarumbiovartrifolii, Flaviobacterium L 30 fulvum, Pseudomonas aureofaciens 1393 BS, amounted to no less than 4 months., while the original biological products are stored no more than 1 month. Key words: glauconite, sorbent, sorption capacity, heavy metals, microorganisms, immobilization on inorganic carriers.

Сharacterization of copper-nickel mineralization of metagabbroids (North Timan)

Aleksandra Shmakova — Mon, 18 Nov 2019 03:26:23 +0300

The article discusses the comparison of the mineralogical and technological properties of minerals and the whole copper-nickel ore manifestations of the "Blizhneye" and "Dal'neye" Bugrovskaya area. According to the results of the study, rock-forming and secondary minerals of ore-bearing rocks were established. Characterized sulfide minerals and their associations. In general, the complexity of ores, including precious metal mineralization, was noted. According to the obtained mineralogical data, possible methods of ore enrichment are predicted.

Ultramafic rocks of the Aganozero chromium ore deposit (South Karelia) as a non-conventional magnesium-silicate raw material for the production of new ceramic materials

Vera Ilyina, Petr Frolov — Mon, 18 Nov 2019 03:39:46 +0300

Ultramafic rocks of the Aganozero chromium ore deposit located in South Karelia are of practical interest as a high-Mg raw material for industrial application. The preliminary results of the study of high-Mg rocks and minerals from the Aganozero deposit for the production of new materials are reported. The high technological level and economic efficiency of the ceramic materials produced, based on Karelia’s high-Mg rocks and industrial minerals, were achieved by reducing energy consumption and simplifying the technological process. The practical application of local types of mineral products will increase the raw materials potential for the production of various types of refractories and industrial ceramics.

Prospects of Karelian carbonate deposits for the production of correcting additives to cement blend based on upper devonian marls from the russian platform

Petr Frolov, Oksana Myasnikova, Aleksandr Savitsky — Thu, 21 Nov 2019 12:35:51 +0300

The possible use of carbonate rocks from some Karelian deposits for the production of correcting additives to raw cement blend from cement occurrences in the Leningrad and Novgorod districts (exemplified by the Babino occurrence) with insufficient standards for unaided exploitation are discussed.

Preliminary assessment of the radiation-hygienic situation at the Aganozero complex deposit

Aleksandr Savitsky, Vera Ilyina, Vladimir Kevlich — Thu, 21 Nov 2019 17:24:11 +0300

The Aganozero chromium ore deposit, located in the Pudozh District, Karelia, is a complex object for ore and non-metalliferous useful minerals such as chromium ores, platinoids, chrome spinellids as well as Mg-bearing and high-Mg raw materials, e.g. serpentinite, olivinite, dunite and building materials. The primary goal of the present paper is to assess the radiation-hygienic situation at the Burakovian-Shalozero-Aganozero massif, which comprises the Aganozero deposit. Our assessment is essential in connection with the Megaproject to be launched in Karelia, where the Aganozero deposit will play the key role. Our assessment is based on the field and laboratory studies conducted by the authors with regard for the data obtained for this deposit by the Karelian Geological Survey and the appraisal of the radiation-hygienic situation in the Pudozh District done earlier by Nevskgeologia GTP, VSEGEI.

Analysis of fluid inclusions in vein quartz of the Fenkina-Lampi deposit by gas chromatography

Evgenia Svetova, Svetlana Shanina — Thu, 21 Nov 2019 17:44:53 +0300

The composition and content of fluid inclusions in the main structural and technological types of vein quartz of the Fenkina-Lampi deposit were studied by gas chromatography. It is shown that H₂O dominates (90–99%) in the gases composition released from quartz under heating to 1000°C, CO₂, CO, N₂ and hydrocarbon compounds contents are much less. Quartz is characterized by high gassing in the high-temperature region (600–1000°C) comparable to gassing in the low-temperature interval (100–600°C), which is a negative indicator of the quality of quartz as a raw material for high-quality glass melting. It is necessary to develop a special purification technology for this quartz, which will take into account the features of its saturation with gas-liquid inclusions.

Obtaining of synthetic titanosilicate with the korobitsenite structure

Thu, 21 Nov 2019 18:10:13 +0300

The article presents the study results of obtaining a composite hydrated titanosilicate precipitate and its use for the synthesis of alkaline titanosilicates.

On the rational use of rocks upon the exploitation of the Nigozero deposit

Vladimir Kevlich , Aelita Pervunina , Svetlana Masrtryukova — Thu, 21 Nov 2019 18:25:01 +0300

A scheme of anthraxolite extraction, based on the mineralogo-technological studies of Nigozero tuffaceous sandstone, enriched in anthraxolite concretions, was proposed. The authors recommend using radiometric methods to produce commercial ore to be dressed for anthraxolite during the subsequent integrated exploitation of the deposit.