Abstract Processing of apatite-nepheline ore with low summary amount of principal ore minerals is accompanied with decrease in technological indicators of apatite concentrate production. The ...
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An experimental and theoretical approach to the assessment of the specific surface of apatite-nepheline ore in the process of grinding. 15th International Multidisciplinary Scientific GeoConference SGEM2015. 2015.
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Abstract The article examines the scientific and practical problem of increasing the energy and resource efficiency of chemical and technological processes to produce phosphorite pellets from waste apatite–nepheline ores. A promising way to solve this problem is to find the optimal temperature regime for heating the charge in a roasting conveyor machine. The …
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The process of modeling ore drawing was implemented in a discrete environment. Values have been determined for the lateral losses in the ridges between the drill haulage workings and the frontal ...
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The technological and heat engineering substantiation for a new process arrangement for nepheline production using the sintering process is presented. In this process desilication of aluminate liquor and evaporation of a soda liquor is combined in one stage. ... «Efficiency of nepheline ore processing for alumina production», Light Metals ...
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FIELD: non-ferrous metallurgy. SUBSTANCE: method comprises changing the flow rate of nepheline ore, limestone, and return carbonate solution for producing charge. The limestone and alkaline components of the charge are calculated from the specified values of limestone and alkaline components of the cake with taking into account variation of ash content in the coal …
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The article describes the lab-scale tests aimed at development of an efficient technology for nepheline concentrate production from high-silica nepheline-bearing raw …
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The paper presents a structure of the digital environment as an integral part of the "digital twin" technology, and stipulates the research to be carried out towards an energy and recourse efficiency technology assessment …
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An example is the processing of apatite-nepheline ore waste, which accumulates in huge. quantities in the tailing dumps of mining and processing plants and poses a significant environmental.
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Energy and Resource E ciency in Apatite-Nepheline Ore Waste Processing Using the Digital Twin Approach Maksim Dli 1, Andrei Puchkov 1,*, Valery Meshalkin 2, ... recourse e ciency technology assessment of phosphorus production from apatite-nepheline ore waste. The problem with their processing is acute in the regions of the Russian Arctic shelf ...
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FIELD: mining industry. SUBSTANCE: method concerning hydrochemical processing of alumina-containing raw material comprises providing nepheline-limestone-soda blend and caking it followed by leaching, desiliconization, and carbonization of aluminate solution to produce alumina, soda products, and potassium sulfate. Novelty resides in adding chamotte refractory brick …
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The raw materials were nepheline concentrate and silica gel, which are products of the processing of apatite-nepheline ore. Directly before the synthesis of low-modulus zeolites, the morphology ...
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produce Portland cement in a second calcination step. Processing about 4–4.5 tonnes of nepheline ore yields 1 tonne of alumina, 9–11 tonnes of cement, 0.6–0.8 tonnes of soda ash, and 0.2–0.3 tonnes of potash. According to the grade of the bauxite ore, 2–3 tonnes of ore yield one tonne of alumina and about one tonne of red mud (dry ...
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The raw materials were nepheline concentrate and silica gel, which are products of the processing of apatite-nepheline ore. Directly before the synthesis of low-modulus zeolites, the morphology, chemical composition, and particle size of the starting materials were analyzed. The optimal parameters for sample preparation and purification of the ...
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A hydrometallurgical alkali-sulphate technology for processing nepheline ore was developed, including preliminary chemical activation and leaching in HMAS with the use of CaSO 4 as a calcium additive in the first stage, which provides the amount of constituents necessary for the formation of potassium sulphate. As a result, we extract potassium ...
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The object of the study was apatite-nepheline ore of the Khibiny deposits group (Russia) and phosphate ore of the Abu-Tartur deposit (Egypt). For the development of ... Mineralogical and Technological Aspects of Phosphate Ore Processing 61. To determine the optimal processing scheme for ANO and PO, samples with a
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History The Nepheline ore body was discovered in the 1890's but it's potential was not recognized until the 1920's after research into glassware and ceramics Mining has taken place at this site for over 75 years Blue Mountain - since 1955 Nephton –since 1935 Canada was the first country to develop the use of Nepheline as a raw material for glass, ceramic and filler …
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ore for Alumina production. Experiments were carried out up to the semipilot scale. e process involves crushing and grinding of a mixture of nepheline syenite ore and limestoneinacertainratio,sinteringthegroundmaterial, crushing and grinding the sinter product, digesting the ground sinter powder, ltering the slurry, desilicating the
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The present paper focuses on the possible use of nepheline syenite, originated as a mine byproduct, in alumina production through leaching with an azeotropic HCl solution. Previous work on nepheline syenite dissolution …
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RU2002125623A - METHOD FOR PROCESSING NEPHELIN ORE - Google Patents METHOD FOR PROCESSING NEPHELIN ORE Info Publication number RU2002125623A ... ore processing mixture nephelin nepheline Prior art date Application number RU2002125623/15A Other languages Russian (ru)
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EFFECT: increased process characteristics of apatite conversion and essentially improved quality of titanite concentrate. 3 cl, 1 tbl RU2152258C1 - Integrated apatite-nepheline ore concentration process - Google Patents
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The invention relates to non-ferrous metallurgy and can be used to process nepheline feedstock for alumina, soda products and cement. The purpose of the invention is to reduce the loss of alkali carbonates. For this purpose, a mixture of nepheline raw material, limestone, a co-solution of a solution and a concentrate of thermochemical enrichment of synonyrite is prepared.
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FIELD: mining industry. SUBSTANCE: calcination method for processing of nepheline ores comprises providing nepheline/lime/soda blend and calcination thereof followed by leaching, desiliconization, and carbonization of aluminate solution to produce alumina, sodium products, and potassium sulfate. When preparing nepheline/lime/soda blend, 0.15-0.41% of aluminum …
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The applicability of magnetic separation and direct selective flotation for the processing of eudialyte ore from Norra Kärr (Sweden) was tested. The eudialyte in the used sample contains around 4 % of REE. ... The Norra Kärr eudialyte ore is a nepheline-syenite intrusion . The main components are nepheline, feldspars, aegirine, and eudialyte ...
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ore is in demand on the world market, as it is a high-quality raw material for the production of phosphate fertilizers, and the products of its processing are a promising resource of valuable components (Ponomareva et al., 2021). The composition of apatite-nepheline ore …
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The present paper focuses on the possible use of nepheline syenite, originated as a mine byproduct, in alumina production through leaching with an azeotropic HCl solution. …
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An example is the processing of apatite-nepheline ore waste, which accumulates in huge quantities in the tailing dumps of mining and processing plants and poses a significant environmental hazard to the adjacent territories. One of the directions for processing apatite-nepheline ore waste is the production of yellow phosphorus from them [4].
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The invention discloses a kind of process of iron removal of nepheline ore by strong magnetic concentration, belong to the ore processing and treating method, be particularly related to and a kind of the process that dry method and wet method are carried out the high intensity magnetic separation deironing carried out in the nepheline ore deposit, the present invention is in order …
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The apatite-nepheline ore waste processing plant discussed in this paper is a complex chemical and energy technology system (CETS). It comprises three successively arranged process units: a granulator, a conveyor type multi-chamber calcining machine, (CTMCM), and an ore thermal furnace (OTF) [8]. The control of the CETS requires forming a complex
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Conclusions It was found that the amounts of technogenic wastes from apatite-nepheline ore processing at mining-and-processing integrated works are large and cause significant environmental damage. It was stated that, in view of the rich chemical and mineralogical composition of such technogenic deposits, it is expedient to recycle them, and it ...
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