The modal composition of (apatite)-nepheline-titanite ore and its geological setting within apatite deposits of the Khibiny Massif allow selective mining of titanite ore and its hydrochloric acidic processing. The reaction of titanite with concentrated hydrochloric acid produces hydrated titanosilicate precipitate (TSP) which, in turn, can be a precursor in …

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 industries and

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 ...

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 ...

The improved process flowchart ensures production of nepheline concentrate which satisfies requirements of subsequent processing by sintering with lime and contains not less than 26.4% of alumina and not more than 2.3% of total iron, with alumina recovery of not less than 90% at the silica modulus of 0.6 and alkali modulus of 0.5.

In Russia, due to a lack of bauxite, a process using nepheline as feed-stock has been used to produce alumina. Essentially the technique consists of sintering a nepheline ore, or …

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

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 ...

Summary This chapter contains sections titled: Introduction Description of the nepheline ore Conclusions Efficiency of Nepheline Ore Processing for Alumina Production - Essential Readings in Light Metals - Wiley Online Library

The comparative economical analysis and energetic analysis of alumina production from various kinds of raw materials were carried out basing on industrial data. The main process parameters of nepheline raw materials processing through sintering adopted at large industrial scale are given. The said technology allows the wasteless utilization of nepheline to produce alumina, soda, …

Nepheline syenite shows more efficiency in ore processing for alumina production in the point of view of low operating cost, low environmental pollution, and the production of by …

Stepanov and Stepanov (1998) estimate that the processing of 3.9–4.2 mt of nepheline ore yields 1 mt of Al 2 O 3, 0.6–0.8 mt of soda, 0.2–0.3 mt of potash and 9–10 mt of Portland cement. Download: Download full-size image; 2.5. Flowsheet for alumina production based on the sintering of nepheline.

By understanding these key links, we can better grasp the efficient utilization methods of nepheline ore and provide a reference for optimizing the mineral processing …

The main process parameters of nepheline raw materials processing through sintering adopted at large industrial scale are given. The said technology allows the wasteless utilization of …

For the test work, eudialyte ore from Norra Ka¨rr, Sweden was used. The Norra Ka¨rr eudialyte ore is a nepheline-syenite intrusion [7]. The main components are nepheline, feldspars, aegirine, and eudialyte. These make up more than 90 % of the samples. Nepheline and feldspars have a similar mineralogy and behave similarly in the tested

This paper proposes multilevel architecture for an intelligent control system for the complex chemical energy technological process of yellow phosphorus production from apatite-nepheline ore processing waste. The research revealed that, when controlling this process, one has to deal with large amounts of multiformat and polymodal information, and control goals …

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 beneficiation schemes and modes, complex studies were …

In leaching process for the nepheline ore of type A, the recovery of values from the sinters (82.8%) were 6 to 8% higher than B,C and D types. In the first stage of desilication of Aluminate ...

Abstract A technology has been developed for the destruction of polycomponent materials from the apatite-nepheline ore of the Khibiny deposit to increase the completeness of the extraction of the target component. Heating particles of apatite-nepheline ore to a temperature of 600°C and then rapidly cooling them with water to a temperature of 105°C leads to the …

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Potassium occurs abundantly in nature such as in seawater, certain clays and rock-forming minerals. The seawater is a source of potassium that contains around 380 mg/L, which constitutes approximately 1.1% of the total salt present [].It has been estimated that the total oceanic abundance of potassium is around 5.10 × 10 14 tons while the mineral reserves …

Increasing the efficiency of phosphate ore processing using flotation method ... non-ionic surfactants; flotation of nepheline ore; statistical plan Introduction. Most of the world's phosphate ores are used in the production of fertilizers and phosphoric acid [20]. Froth flotation is the most widespread method of phosphate ore processing

The engineeringgeological investigations of apatite–nepheline ore flotation tailings in the sites applied with chemicals at ANOF2 processing plant of Apatit Company are carried out.

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].

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 ...

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 ...

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.

Features are established for a change in indices for opening ore resources during pyrometallurgical treatment of a limestone-nepheline charge and subsequent leaching of sinter in relation to process temperature, nature and amount of raw material additions that make it possible to suggest a fundamental production scheme for inclusion into ...

Arlyuk, B. I. and Pivnev, A. I. Efficiency of nepheline ore processing for alumina production, TMS Light Metals, pp. 181–195, 1991. Google Scholar Arlyuk, B. I. Evaluation of efficiency of processing nepheline raw material for production of alumina, TMS Light Metals, pp. 9–18, 1992. Google Scholar

ABSTRACT: Razgah nepheline-bearing ore deposit is a promising source of alumina in Iran. The VAMI (Russian Aluminium-Magnesium Institute) studies on Razgah representative samples …