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  • (PDF) Effects of modulus and dosage of sodium silicate on ...

    Effects of modulus and dosage of sodium silicate on limestone flotation Article (PDF Available) in Maejo international journal of science and technology 4(3):397-404 September 2010 with 675 Reads

  • Effects of modulus and dosage of sodium silicate on ...

    Sodium silicates are probably one of the oldest and most widely used industrial chemicals. Among a wide variety of applications, an important one is as a depressant in flotation. In this investigation, the effectiveness of sodium silicates of different values of modulus (silica-to-soda ratio) and dosage was investigated on a low-grade siliceous limestone sample having CaO = 45.10%, SiO2 = 15 ...

  • 作者: Danda S. Rao
  • Effects of Dosage and Modulus of Water Glass on Early ...

    Effects of Dosage and Modulus of Water Glass on Early Hydration of Alkali-Slag Cements Article in Cement and Concrete Research 32(8):1181-1188 August 2002 with

  • Effect of sodium silicate on the reverse anionic flotation ...

    Sodium silicate dosage, modulus and conditioning time affect iron ore flotation. • Addition of hydrous calcium chloride enhances the silica separation from iron ore. • An iron concentrate with Fe of 67%, SiO 2 of 1.5% and P of 0.034%, is obtained. Abstract. In the flotation system of Chador Malu iron processing plant (Iran), the apatite is floated with fatty acid based collectors. Sodium ...

  • Cited by: 13
  • CORE

    Effects of modulus and dosage of sodium silicate on limestone flotation . By Danda S. Rao. Download PDF (553 KB) Abstract. Sodium silicates are probably one of the oldest and most widely used industrial chemicals. Among a wide variety of applications, an important one is as a depressant in flotation. In this investigation, the effectiveness of sodium silicates of different values of modulus ...

  • 作者: Danda S. Rao
  • Effect of alkali dosage and silicate modulus on ...

    The effects of alkali dosage and silicate modulus on the total porosity and average pore size of the AAS mortars after 48 h of steam curing and 56 days of carbonation are shown in Fig. 5. The results show that the pores of the AAS mortars are denser at higher alkali dosage and silicate modulus. The reduction in total porosity and average pore size by increasing alkali dosage and silicate ...

  • Cited by: 16
  • (PDF) Effect of the particle size on flotation performance ...

    In this investigation, the effectiveness of sodium silicates of different values of modulus (silicato soda ratio) and dosage was investigated on a low-grade siliceous limestone sample having CaO ...

  • Beneficiation of limestone plant rejects for value ...

    The results indicate, as sodium silicate amount increased, there was a slight enhancement in the grade due to selective flotation and simultaneously, the yield of the concentrate decreased slightly. It was found that the grade of the concentrate was enhanced by 1.3% with sacrificing only 1% in yield. Hence, it was established that 3.0 kg/tonne of depressant is enough for this sample.

  • Cited by: 4
  • Stepwise regression modeling for compressive strength of ...

    The effects of curing condition (moist-cured versus heat-cured), sodium oxide dosage, silica dosage, silica modulus (relative dosage of silica to sodium), solution/binder ratio, and free water/binder ratio on the compressive strength of sodium silicate-activated fly ash and slag cement concrete are evaluated. More than 5000 specimens with 676 unique combinations of mixture proportion and ...

  • Cited by: 6
  • Beneficiation of limestone plant rejects for value ...

    The results indicate, as sodium silicate amount increased, there was a slight enhancement in the grade due to selective flotation and simultaneously, the yield of the concentrate decreased slightly. It was found that the grade of the concentrate was enhanced by 1.3% with sacrificing only 1% in yield. Hence, it was established that 3.0 kg/tonne of depressant is enough for this sample.

  • Stepwise regression modeling for compressive strength

    The effects of curing condition (moist-cured versus heat-cured), sodium oxide dosage, silica dosage, silica modulus (relative dosage of silica to sodium), solution/binder ratio, and free water/binder ratio on the compressive strength of sodium silicate-activated fly ash and slag cement concrete are evaluated. More than 5000 specimens with 676 unique combinations of mixture proportion and ...

  • Effectiveness of sodium silicate as gangue depressants in ...

    The relative effectiveness of sodium silicates with different silica-to-soda mole ratios as depressants for silica and silicate bearing minerals was investigated. Silica-to-soda mole ratio and silicate dosage were found to have significant effect on the separation efficiency. The results show that an increase of Fe content in the concentrate is observed with concomitant reduction in SiO

  • Effect of alkali dosage and silicate modulus on ...

    In this study, the effects of silicate modulus of activators (Ms) on carbonation of alkali-activated slag/fly ash cements are studied and compared between natural (0.03-0.04% CO2) and accelerated ...

  • Geochemical assessment of a siliceous limestone sample

    Rao D.S., Vijayakumar T.V., Angadi, S, et al. (2010) Effects of modulus and dosage of sodium silicate on limestone flotation [J]. Maejo International Journal of

  • Beneficiation of a low grade limestone sample -

    Pilot scale column flotation studies were conducted on a low grade siliceous limestone ore. Silica content was reduced to less than 1% in the concentrate so that it became satisfactory for use in the paper or rubber industries. The limestone sample was crystalline and constituted primarily of calcite that contained quartz, feldspar, pyroxene, and biotite as gangue minerals. Quartz is the major ...

  • EP2514727A2 - An alkali activated limestone concrete ...

    The object of the invention is an alkali activated limestone concrete composition comprising a binder and an alkali activator, wherein the content of limestone in the binder is 40-100 wt - %. The invention also describes the use of alkali activated limestone concrete in concrete casting.

  • Maejo Int. J. Sci. Technol. Maejo International Journal of ...

    Maejo International Journal of Science and Technology ISSN 1905-7873 Available online at mijst.mju.ac.th Full Paper Effects of modulus and dosage of sodium silicate on limestone flotation Danda S. Rao1,*, Tadiparthi V. Vijayakumar2, Shivakumar Angadi1, Swarna Prabhakar2 and Guntamadugu B. Raju2 1 Institute of Minerals and Materials Technology, Bhubaneswar - 751 013,

  • Alkali–silica reaction - Wikipedia

    When the sodium silicate gel forms and swells inside a porous siliceous aggregate, it first expands and occupies the free porosity. When this latter is completely filled, if the soluble but very viscous gel cannot be easily expelled from the silica network, the hydraulic pressure rises inside the attacked aggregate and leads to its fracture. It is the hydro-mechanical expansion of the damaged ...

  • Granite mining equipment 1

    effects of modulus and dosage of sodium silicate on limestone limestone jjf; bauxite mining guyana; stone crusher crusher machine for stone and granite; feldspar powder uses; cyclone mining equipment; crush multiple arm pavement crusher; jaw crusher nigeria stjq33 building; mining manganese ore mining and quarry equipment nigeria ; impact crusher impact crusher kazakhstan for sale; beach

  • Granite mining equipment 1

    effects of modulus and dosage of sodium silicate on limestone limestone jjf; bauxite mining guyana; stone crusher crusher machine for stone and granite; feldspar powder uses; cyclone mining equipment; crush multiple arm pavement crusher; jaw crusher nigeria stjq33 building; mining manganese ore mining and quarry equipment nigeria ; impact crusher impact crusher kazakhstan for sale; beach

  • Effect of silicate modulus of water on the hydration ...

    Converter steel slag, currently underutilized crystalline metallurgical residue, was investigated for use as a precursor for alkali activation. Water solution with various moduli (0.5, 1.0, 1.5 and 2.0) was used at the same Na2O dosage of 4% in order to investigate effect of modulus on hydration. Pure cement paste with the same ratio of water to binder was selected as the control sample.

  • limestone mines in orissa - bottomlayer.cz

    Limestone Mines Orissa Sand Washing Machine Price Of In India,Cone, both in the used for the study was procured from Purnapani limestone mines.. Get Price . Mining in India Wikipedia. Khullar holds that mining in India depends on over 3,100 mines, ... and heaps of limestone block, ... West Bengal and Orissa. Coal, iron ore, manganese, ... Get Price . limestone mines in orissa ...

  • Effect of Fineness of Sand on the Cost and Properties of ...

    Admixture Dosage reduced from 1.0 percent to 0.2 percent as sand fineness modulus increases from 2.0 to 3.0. For Every 5% increase in FM of sand, admixture dosage reduced by 0.1%. Effect of Fineness of Sand on Density of Concrete After measuring the slump, several 150 mm cubes were filled. These were cured in water tank for 28 days. After ...

  • beneficiation of limestone

    Beneficiation of limestone plant rejects for value addition. J Hazard Mater. 2013 Nov 15;262:218-27. doi: 10.1016/j.jhazmat.2013.08.048. Epub 2013 Aug 28. Beneficiation of limestone

  • Most Promotional HZS25 Sodium Silicate Plant/new

    The production of sodium silicate. Sodium silicate is a product with unlimited possibilities. It is a chemical compound of silicon dioxide (SiO2produced from pure silver sand), disodium oxide (Na2O) and water. Silmaco uses only the purest quartz sand in the world to produce silicates for its customers.

  • Efficiency of Different Superplasticizers and Retarders on ...

    18/10/2019  This is due to the higher modulus of GD Grade sodium silicate (nSiO 2 /nNa 2 O = 2.0) as compared to that of anhydrous sodium metasilicate (nSiO 2 /nNa 2 O = 0.9). Previous studies showed that activator with higher modulus provided more soluble silicate into the geopolymeric system, which promoted the geopolymerisation reaction and resulted in increasing the strength [ 58 , 59 ].

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  • Effect of sodium silicate on Portland cement/calcium ...

    Effect of sodium silicate on Portland cement/calcium aluminate cement/gypsum rich-water system: strength and microstructure. Zhiming Wang ab, Yuning Sun * ab, Shuo Zhang a and Yonglong Wang a a School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo, 454002, China. E-mail: [email protected] b State and Local Joint Engineering Laboratory for Gas Drainage and

  • Preparation and Mechanical Properties of Cemented

    Sodium silicate was purchased from the market with a modulus of 2.80, Na 2 O content of 10.27%, and SiO 2 content of 27.79%. Sodium hydroxide is commercially available as a 99% pure industrial flake NaOH for adjusting the sodium silicate modulus. Water was

  • Geochemical assessment of a siliceous limestone sample

    11/03/2011  Rao D.S., Vijayakumar T.V., Angadi, S, et al. (2010) Effects of modulus and dosage of sodium silicate on limestone flotation [J]. Maejo International Journal of Science and Technology. 4, 397–404. Google Scholar

  • Preparation and Mechanical Properties of Cemented

    Sodium silicate was purchased from the market with a modulus of 2.80, Na 2 O content of 10.27%, and SiO 2 content of 27.79%. Sodium hydroxide is commercially available as a 99% pure industrial flake NaOH for adjusting the sodium silicate modulus. Water was

  • Geochemical assessment of a siliceous limestone sample

    11/03/2011  Rao D.S., Vijayakumar T.V., Angadi, S, et al. (2010) Effects of modulus and dosage of sodium silicate on limestone flotation [J]. Maejo International Journal of Science and Technology. 4, 397–404. Google Scholar

  • Research Article INFLUENCE OF CURING CONDITIONS ON ...

    Fineness modulus 2.27 7.06 Specific gravity 2.43 2.64 Bulk density in loose state 1646kg/m 3 1564 kg/m 3 4.2 ALKALINE SOLUTION The sodium hydroxide (NaOH) used in this study was in flake form and of 98% purity. The sodium silicate solution (Na2SiO 3) used is available locally. The composition of the solution is Na2O=12.65%,

  • Effect of spodumene leaching with sodium hydroxide on

    Physicochemical Problems of Mineral Processing. 2015 Vol. 51, iss. 2 745--754 Tytuł artykułu. Effect of spodumene leaching with sodium hydroxide on its flotation Autorzy. Yu, F., Wang, Y., Zhang, L. Treść / Zawartość. Pełny tekst: Pobierz; Warianty tytułu. Języki publikacji. EN. Abstrakty. EN. Effects of NaOH on flotation of spodumene, quartz and feldspar using oleic acid as a ...

  • Geopolymer Based on Mechanically Activated Air

    An efficient solution to increase the sustainability of building materials is to replace Portland cement with alkali-activated materials (AAM). Precursors for those systems are often based on water-cooled ground granulated blast furnace slags (GGBFS). Quenching of blast furnace slag can be done also by air but in that case, the final product is crystalline and with a very low reactivity.

  • Effect of various alkalis on hydration properties of ...

    11/11/2017  The effect of sodium silicate (NS system) and sodium hydroxide (NH system) on hydration properties of alkali-activated slag (AAS) cements is investigated, and more attention has been paid to the hydration kinetics in this paper. The increase of Na2O dosage tends to promote higher early strength of the cements, but lower strength gain at later, while increasing SiO2 dosage leads to

  • ALKALI ACTIVATED SLAG PERVIOUS CONCRETE FOR HIGHWAY ...

    naturally occurring materials like limestone, chalk, and clay are to be mined and processed every year. With the ... silicate and sodium hydroxide, Na 2 O dosage 3,4,5 and 6% Ms of 1.25 with GGBS content of 180kg and w/b of 0.3 changes in volume was observed due to change in the specific gravities of Na 2 O dosage has been adjusted total aggregate content. Solution with dosage of Na 2 O 3, 4 ...

  • Time resolved alkali silicate decondensation by sodium ...

    For instance, to produce accessible and rock-like materials, mankind started making calcium silicate cement from limestone and pozzolan, and extracting aluminosilicate clays. Recently, the continuous growth of the concrete's demand has been driven by the demographic change 6, 7]. This has motivated recent studies to assess the structure of cement at the nano-scale [8, 9] to maximize the ...

  • A Review on Radiation Damage in Concrete for Nuclear ...

    Effects on concrete in terms of compressive and tensile strength, modulus of elasticity, weight loss, and volumetric change are here plotted and classified under the applied laboratory conditions. It is here pointed out for a wider data collection that the effects of some important parameters such as the neutron fluence magnitude at which concrete deterioration becomes significant, the neutron ...

  • influence of sodium silie in nonmetallic flotation

    Sodium silicate modulus Sodium oleate flotation This paper presents the influence of sodium silicate modulus on iron ore flotation with sodium oleate collector. Bench flotation tests were performed at pH 7 with actual iron ore from Quadrilátero Ferrífero, Brazil, with 42.8% Fe and 37.2% SiO 2. Iron recovery averaged above 90% and the Fe ...

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    The materials of processing: *

    • Granite
    • Limestone
    • Basalt
    • Pebble
    • Gravel
    • Gypsum
    • Marble
    • Barite
    • Quartz
    • Dolomite
    • Gold Ore
    • Copper ore
    * *

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