Ongoing Projects

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S.No. Number Start Date End Date Project Leader Category Type Core Area Sub Area
       
1NML/IPSG/2015/2016/500362016-04-012017-03-31Archana KumariR&DFull tenure(1 year)Extractive MetallurgyHydrometallurgy

Title: STUDIES FOR THE RECOVERY OF LANTHANIDE GROUP METALS FROM PRIMARY AND SECONDARY RESOURCES

Abstract: Rare earth metals (REMs) are vital ingredients for the advancement of modern industry and developing high technology products used in our daily lives. As a result, the worldwide demand of these metals is growing quickly and predicted to surpass the supply by 40,000 tons annually. However, their availability is declining due to export quotas imposed by the Chinese government and actions taken against illegal mining operations. Consequently, importance has been felt to expand feasible processes for rare earth recovery from various resources to meet their future requirements. Present work is focused on the development of extraction processes for the recovery of rare earth metals from primary and secondary resources. Pre-treatment and leaching studies will be carried out for optimizing different process parameters such as effect of temperature, acid concentration, time, pulp density, etc. The leach liquor generated in optimized condition will be processed further to solvent extraction studies to obtain pure metal solution. The obtained results for leaching and solvent extraction will be further validated scientifically for REMs extraction from primary (ore) and secondary (e-wastes) resources. The data obtained will be useful for scale-up studies for applied research.

2NML/IPSG/2016/2016/906482016-04-012017-03-31K K SahuR&DFull tenure(1 year)Extractive MetallurgyHydrometallurgy

Title: Extraction of potash from Glauconitic Sandstone

Abstract: Potash is one of the three essential plant nutrients; the other two are nitrogen and phosphorus. Its requirement as a fertilizers have a vital role in Indian agriculture. At present, the country entire need (1.42 million tonnes) of potash is meeting through imports for which government is spending 400 million dollar. India doesnt have marine evaporative deposits, but we have huge deposits of low grade potash resources in the form of k-feldspar and glauconite. Glauconitic sandstone (3000 million tonnes, containing 4 to 6% K2O) due to its poor structural organization and the resulting susceptibility for weathering shows promising source of potash. So, the present proposal aims for development of the suitable process flow sheet for the recovery of potash from glauconite through different probable route. However, in the present module-1, detail study related to the physical and chemical properties of different type of glauconite by using characterization tools has been performed and based on the knowledge thus developed we will carry out physical & chemical beneficiation study for enrichment of K2O percentage. Further hydrometallurgical & pyro metallurgical process studies are done in next module along with production of high value added product.

3NML/IPSG/2016/2017/102016-04-012017-03-31Madan MR&DFull tenure(1 year)Extractive MetallurgyProcess Modeling

Title: Inclusion removal in steels - characterization of inclusion for different synthetic slags and to update CFD-DEM model for different inclusion removal rates

Abstract: The challenges required by the applications to improve the mechanical and other properties led to improve the cleanliness of the steel. This increasing demand in recent years for high quality steels has considerably affected the steelmaking process practices itself. The non-metallic inclusion plays an important role in the clean steel technology where it has to be minimized or be modified to remove its harmful nature by controlling their morphology, composition and size distribution. The inclusions in the steels are removed by using the synthetic slag. The mechanism of the inclusion removal from the metal to the slag phase is to be assessed in detail to enhance its usability in the treatment of the steel in Ladle. The kinetics of the inclusion removal and the flow behavior in the Ladle plays an important part in increasing the inclusion removal from the steel. A combined approach of the thermodynamics, kinetics and CFD will articulate the maximum inclusion removal with minimum of given time period. In this study, a detailed thermodynamics and kinetics is to be carried out to find best suited synthetic slag for the Al killed steels.

4NML/IPSG/2016/2017/132016-04-012017-03-31Rohit Buddham MeshramR&DFull tenure(1 year)Resource, Energy & EnvironmentMetallurgical/Mineral Waste Utilisation

Title: Development of porous geopolymer product from industrial waste such as fly ash and calcium bearing slag

Abstract: The recent trend in building industry is use of lightweight material. This offers advantage in terms of reduced mass while maintaining adequate strength. Reduced mass not only offers less energy consumption during construction but also increases resistance against earthquake. Currently, lightweight concrete is produced from a mixture of cement, lime and sand using autoclave processing. The process is energy consuming and thus adversely affects the sustainability of building. The present work aims to develop lightweight porous geopolymer from industrial waste using ambient temperature curing. Industrial waste such as fly ash and calcium bearing slag will be used as starting material. The slag will be subjected to geopolymerisation using alkali solution. During early geopolymerisation, when calcium hydroxide forms, aluminium powder will be added, which will react with calcium hydroxide and water to form hydrogen. The hydrogen gas will foam and increase the volume of mix. Fly ash will be added as filler to give hardening and strength. Various process parameters such as percent of aluminium, time of setting, mixing time, etc will be optimized. The product will be compared with commercial available products for properties and cost.

5NML/IPSG/2016/2017/17992016-04-012017-03-31CHANDRANI SARKARR&DFull tenure(1 year)Materials EngineeringAdvanced Materials (Structural, Bio, Magnetic) & P

Title: SYNTHESIS OF THREE DIMENSIONAL HEMIPOROUS CALCIUM PHOSPHATE BLOCKS AS SYNTHETIC BONE GRAFTS

Abstract: The main aim of the proposed research work is to synthesize three dimensional hemi-porous calcium phosphate block as synthetic bone graft in order to mimic the natural structure of bone. Means one half of this 3D block will be dense and another half will be porous. We will also try to improve the strength of outer dense part. Synthesized materials will be systematically characterized by using Universal Mechanical testing machine, XRD, XPS, SEM, TEM, FTIR, 13C NMR, 31P NMR, TG/DTA, biocompatibility/bioactivity test.

6NML/IPSG/2016/2017/216102016-04-012017-03-31Parikshit MundaR&DFull tenure(1 year)Materials EngineeringAlloy Development

Title: Study of erosion behavior of bainite microstructures of steels (Module-III)

Abstract: With the progress of steel development, there are recent developments like superbainitic steel as well as nano structured bainitic steel. These microstructural features are generally achieved through isothermal transformation of austenite to bainite structure in steels. Bainite is formed from austenite through a shear mode and later some carbides precipitates in diffusional mode. Bainite steels have excellent tensile strength/hardness and toughness. The unusual combination of toughness and hardness is achieved by the incorporation of certain fraction of retained austenite and control of the bainite laths shape, size and their distribution in the steel microstructure. It is the control of these factors which decides the extent of the toughness without sacrificing the strength /hardness. These factors can be controlled by suitable alloying additions and by adopting suitable heat treatment process. It is also known to a limited extent that bainite microstructure have good fatigue properties. These steels are also known for cost effectiveness because of their lean alloy content for similar properties when compared with other steels. Hence new steel with bainite-austenite microstructure may be considered to manufacture the hydro turbine underwater components in order to tackle the silt erosion problem in a better way. Since cast martensitic stainless steel such as ASTM grade A 743 CA-6NM is presently used material, experienced severe erosion due to silt and cavitation in hydro turbine systems.

7NML/IPSG/2016/2017/251502016-04-012017-03-31Manoj K. MohantaR&DFull tenure(1 year)Mineral ProcessingPetrography & Process Mineralogy

Title: Search for rare metal bearing ore bodies with strategic minerals and their mineralogical characteristics

Abstract: Rare metal resource in India and its exploitation is of demand due to India’s new requirements for metals in defence and space applications. Metals like Tungsten, niobium, tantalum and rare earth element (REE) are of significance. There are poor deposits of the above stated metals in India, and no documented information on the assessment for their production viability. As these elements occur in exotic trace mineral phases and in very small size, a process mineralogical study is critical for liberation and beneficiation. The proposed research aims at exploring lithologically igneous alkaline and carbonate terrains for rare metal potential and mineralogical study so that a sample can be collected for prospective research on beneficiation in future. The research will help CSIR-NML to be pro-active organization in research for providing solution in the field of rare metal beneficiation in future national and industrial demand.

8NML/IPSG/2016/2017/32016-04-012017-03-31Minati Kumari SahuR&DFull tenure(1 year)Materials EvaluationNon-destructive Evaluation

Title: Creep damage assessment in power plant materials using Non linear Ultrasonic Technique

Abstract: Steel pipes are the important structural components of any power plant. Operating under conditions, i.e. high temperature and/or high stress, these steels have potential failure locations and limiting life for the entire plant. In addition, once a failure occurs due to creep at high temperature, the analysis team is often confronted with the question: How long will similar components last or when the next inspection be performed? To address these questions, nondestructive evaluation techniques to detect creep damage are needed. The assessment of creep damage in structures (steels) employed in the most of the industries is usually carried out by means of replica metallographic, but the several shortcomings of this method have prompted a search for alternative or complementary non-destructive techniques. Different non-destructive evaluation (NDE) techniques, such as acoustic emission, infrared thermography, eddy current and linear ultrasonic measurements have been used for the measurement of different types of damage in metals In recent years, non-linear ultrasound has emerged as one of the most reliable technique for non-destructive evaluation of material property degradation, which relies on measuring the higher order harmonics generated by a damage gradient. Recent studies reveals that non-linear ultrasonic measurements are sensitive to subtle damage in a material and can be used to observe damage at an early stage and can be correlated with certain micro-structural changes leading to micro-void nucleation and growth. A greater sensitivity to damage is accessed by monitoring the material by non-linear ultrasonic technique. The objective of this research is to develop a robust experimental procedure to reliably measure the acoustic non linearity parameter using longitudinal waves in both through transmission and pulse echo modes and their correlation with micro structural and mechanical properties in power plant materials to study: i.The effect of tempering temperature in P92 steel ii. Evaluation of different stages of creep damage in P92 steel and Inconnel 600 (Inconnel 600 for creep void and NLU parameter correlation)

9NML/IPSG/2016/2017/395772016-04-012017-03-31Ajit kumar swainR&DFull tenure(1 year)Mineral ProcessingBeneficiation

Title: Evaluation of breakage parameters of ore/rock for ball mill simulation and scale up

Abstract: Ball Mills are the most common form of tumbling mill, used as primary grinding mills with feed up to 20mm, as well as secondary/tertiary and regrinding mill operation with fine feed and product. The mill efficiency depends upon mill design, mill parameters and material specific parameters such as selection function and breakage distribution function. As a continuous mill operation in optimum condition requires systematic corrective measures, the mills are operated with simulation software with feedback mechanism. These software require ore-dependent and machine dependent model parameters. The proposed research aims at generating data base for material parameters for ore/rock, which will be applied for the optimized operation of existing ball mill (1TPH) in MNP Division.

10NML/IPSG/2016/2017/42016-04-012017-03-31ASISH KUMAR DATTAR&DFull tenure(1 year)Materials EvaluationMechanical Behaviour of Materials

Title: Optimization of Hysteretic Dissipation Energy of Moment Resistant Frame for High Rise Steel Structures against Earthquake Excitations for Different Grades of High Tensile Steels: Module II

Abstract: The proposed work is an attempt for criteria and requirements for providing the tall steel structures with necessary ductility. The outcome will be of use to Structural /Metallurgical Engineers for comprehensive investigation into the mechanics of deformation of high rise structural components in respect of strength and stiffness deterioration, ductile moment resistant steel frame connections. The same can meet all the requirements and can serve as a base for more sophisticated generation schemes for direct control on the collapse of the structure and checking if the inelastic deformations imposed by the earthquake to the structural members are compatible with their ductility capacity. The ability of structural steel as a base material to dissipate large amount of seismic energy through inelastic deformations makes steel a material ideally suited for structures undergoing seismic excitations. Steel hardens under cyclic loading and gains strength as the number of cycles and the deformation amplitude increase, resulting in large hysteretic loop. The energy needed to plastically elongate or shorten a steel specimen can be calculated as the product of the plastic force times the plastic displacement and is called the hysteretic energy. Unlike kinetic and strain energy, hysteretic energy is a non-recoverable dissipated energy. The objective of the present work is to develop an intuitive understanding of the response and behavior of ductile moment resistant steel frame connections due to earthquake load. The emphasis is on representation of the element behavior in a standard nonlinear analysis program (including the both geometric non-linearity and material non-linearity), on evaluation of the interaction between different elements at a typical connection. Microstructural characterization of the deformed specimens will be studied by the onset of strength and stiffness deterioration associated with large values of strain which are typically higher than those expected in a severe earthquake.

11NML/IPSG/2016/2017/402502016-04-012017-03-31Ammasi AR&DFull tenure(1 year)Extractive MetallurgyAgglomeration

Title: Study the effect of different carbon source in hematite ore pelletization to utilize the carbon rich waste materials.

Abstract: The energy consumption of pelletising of hematite ore is greater than that of magnetite ore pellet due to the absence of exothermic heat of reaction. A very high induration temperature (say 1325oC) is required to obtain the sufficient strength of fired hematite pellets due to absence of recrystallization and crystal growth of hematite until 1300-1350oC. A huge amount of external energy is required for thermal hardening of hematite ore pellet during induration process. The coal is added to pellet mix to reduce the fuel consumption in pelletization plant. However, the excessive addition of carbon in pelletisation of hematite leads to degrade the pellet quality. Burning behaviour also is a key controlling factor of pellet character because formation of different ratio of CO2 and CO during reactions provide different amount of heat. Ratio of CO2 and CO formation may depend upon partial pressure of oxygen and types of carbon source etc.. While formation of CO2 provides better exothermic heat, formation of CO promotes reduction in pellet and lowers in-situ heat. Therefore, with optimization of carbon it is very imperative to study the better utilization of carbon for in-situ heat generation and minimizing the reduction of pellet. So far, hardly any studies on effect of pO2 on roasting behaviour of Fe2O3 and burning behaviour of different type of coal in pellet is reported. Therefore, in present study the induration behaviour of iron oxide pellet in presence of different source of carbon, their optimization and burning characteristic in induration strand and effect of pO2 on roasting behaviour of Fe2O3 to avail the maximum amount of insitu heat from the carbon which will helps in reducing external energy consumption.

12NML/IPSG/2016/2017/44242016-04-012017-03-31SUMANTA BAGUIR&DFull tenure(1 year)Materials EvaluationMechanical Behaviour of Materials

Title: Creep and creep crack growth behavior of a Nickel base alloy [Module-II]

Abstract: Alloy 617 (Ni-22Cr-12Co-9Mo) is primarily solid-solution strengthened nickel base superalloy. It is one of most promising material for an advanced ultra-super critical (A-USC) fossil fuel fired boiler for its superior mechanical properties, especially creep resistance. Alloy 617 is planned to use around 700-750°C and >24 MPa pressure in internal piping of different section of A-USC boiler. Hence, studies on deformation behavior of Alloy 617 due to creep between 650-800°C is very much essential. Intermediate heat exchanger (IHX) takes part a critical role in boiler to transfer heat from primary reactor to the relatively cold fluid in secondary reactor. Temperature difference/gradient in primary and secondary legs of IHX often responsible for crack initiation source at critical location and propagate to cause failure diminishing the expected creep rupture life of Alloy 617. Similar situation may occur where failure originates at a stress concentration or at pre-existing defects in the component. Below sub-creep temperature regime, conventional fracture mechanics approach for predicting crack growth behavior under elastic or elastic-plastic condition is well established. Whereas, in creep temperature regime, crack tip parameter must take into account time dependent creep deformation. Hence, creep crack growth behavior of Alloy 617 is equally important to understand failure due to creep resulting from a localized damage. Alloy 617 comprises equiaxed grain of gamma phase, annealing twins, uniformly distributed primary carbides (MC, M2C-type) within the grain and secondary carbides (M23C6-type) within the grain and along the grain boundaries. However, proportion of theses phases changes with thermal exposure. Damage accumulated due to creep in bulk material and localized region (due to presence of a crack) needs quantification for better understanding of high temperature deformation behavior of Alloy 617. Though solid solution strengthening is dominant in Alloy 617, other strengthening mechanism are also important and needs to be identified. The prime objective of this research work in Module II is to identify bulk creep deformation mechanism of Alloy 617 at various stress ranges between 650-800°C. In later modules, investigation will be carried out to determine the effect of pre-existing crack on creep/design life. Quantification of damage in terms of dislocation density measurement, creep void measurement etc. and quantification of phases will be determined in final stages.

13NML/IPSG/2016/2017/489072016-04-012017-03-31abhishek KumarR&DFull tenure(1 year)Mineral ProcessingBeneficiation

Title: Chemical aided magnetic separation of iron ore fines.

Abstract: Iron ore tailings containing around 45 - 52% Fe are generated from the iron ore washing plants and are disposed as slimes into tailing ponds without any further utility. This causes huge loss of iron values as well as issues related to environmental problems. Several beneficiation techniques have been tried from time to time which involves magnetic separation as one of the unit operation in their process flowsheet in order to reduce the gangue so that the beneficiated products could be effectively used. While subjecting these tailings to magnetic separation like WHIMS the recovery of iron bearing mineral particles are not satisfactory because of presence of significant proportion of ultrafines in the feed/slimes and their magnetic properties.Further slime coating affects selectivity of separation. So this project aims at enhancing the recovery of ultrafine iron bearing values that are reporting to the reject stream. It is proposed to do magnetic separation by coating of iron bearing minerals with a ferromagnetic material.Further study can be done to analyze the effect of dispersants and flocculants on magnetic separation with vertical pulsating mechanism. Properties of mineral particles can be altered by coating it with some chemicals so that it can respond to the magnetic field it is being subjected to. The Study will lead to basic understanding of problem of magnetic separation of fine particles and will result in development of suitable process/product for enhance recovery of iron values with industrial relevance.

14NML/IPSG/2016/2017/505252016-04-012017-03-31Dr Shobhana DeyR&DFull tenure(1 year)Mineral ProcessingPetrography & Process Mineralogy

Title: Search for rare metal bearing ore bodies with strategic minerals and their mineralogical characteristics

Abstract: Rare metal resource in India and its exploitation is of demand due to India’s new requirements for metals in defence and space applications. Metals like Tungsten, niobium, tantalum and rare earth element (REE) are of significance. There are poor deposits of the above stated metals in India, and no documented information on the assessment for their production viability. As these elements occur in exotic trace mineral phases and in very small size, a process mineralogical study is critical for liberation and beneficiation. The proposed research aims at exploring lithologically igneous alkaline and carbonate terrains for rare metal potential and mineralogical study so that a sample can be collected for prospective research on beneficiation in future. The research will help CSIR-NML to be pro-active organization in research for providing solution in the field of rare metal beneficiation in future national and industrial demand.

15NML/IPSG/2016/2017/586092016-04-012017-03-31CHANDRANI SARKARR&DFull tenure(1 year)Materials EngineeringAdvanced Materials (Structural, Bio, Magnetic) & P

Title: SYNTHESIS OF THREE DIMENSIONAL HEMI-POROUS CALCIUM PHOSPHATE BLOCKS AS SYNTHETIC BONE GRAFT

Abstract: The main aim of the proposed research work is to synthesize three dimensional hemi-porous calcium phosphate block as synthetic bone graft in order to mimic the natural structure of bone. Means one half of this 3D block will be dense and another half will be porous. We will also try to improve the strength of outer dense part. Synthesized materials will be systematically characterized by using Universal Mechanical testing machine, XRD, XPS, SEM, TEM, FTIR, 13C NMR, 31P NMR, TG/DTA, biocompatibility/bioactivity test.

16NML/IPSG/2016/2017/598342016-04-012017-03-31Murugesan A PR&DFull tenure(1 year)Materials EngineeringMetal Forming

Title: Effect of deformation temperature on micro structures of molybdenum added low carbon micro alloyed steel( Phase 2)

Abstract: Line pipe steels, based on API standard, up to strength level of X70 grade are commercially made and being extensively used as structural material in oil and petroleum industries due to their excellent mechanical properties, like tensile strength, toughness and weldability. Although efforts have been made at industrial as well as laboratory level to develop materials beyond the strength level of X70, there are still no defined rule for composition design and suitable thermo-mechanical controlled processing (TMCP) schedule. The role of addition of Molybdenum (Mo) in low carbon micro-alloyed steel, under influence of deformation schedule around Tnr (Non recrysllaization temperature) on development of beneficial microstructures (bainite, acicular ferrite), flow properties and recrystallization behavior of low carbon micro-alloyed steel, has been studied in last module. Multi-hit compression test was used to determine the critical temperatures of steel including Tnr, Ar3 and Ar1 temperatures. Molybdenum added steel showed the reduction of Ar3 temperature from 830 ° C to 758° C with insignificant difference in Tnr temperature i. e. ~1040 °C in most cases. In Nb-Ti-Mo steels, reduction in Ar3 temperatures results in refined grains and thus increasing the strengthening and toughness of steel than the steel have relatively higher Ar3 temperature where finish deformation is carried out. Applying proper finish rolling strategy is essential to generate desired microstructural product since two steels show different Ar3 temperature. Therefore, finish deformation temperature below Tnr and cooling rate in addition to the deformation schedule must be carefully chosen to get such a desired final microstructure. The important objective of present module is to study the Effect of finish deformation temperature and cooling rate on microstructures of two steels, with and without Molybdenum.

17NML/IPSG/2016/2017/62016-04-012017-03-31Aarti KumariR&DFull tenure(1 year)Extractive MetallurgyHydrometallurgy

Title: Investigation on Hydro and Electro-chemical dissolution of scrap magnets of wind turbines for the recovery of rare earth metals and other valuable products.

Abstract: NdFeB magnets have wide application in wind turbines due to its advanced magnetic properties. This magnet contains mainly about 25% of neodymium and 65% of iron. Due to increasing demand of rare earth metals, end-of-life scrap magnets have emerged as an extremely important secondary resource for the recovery of rare earth metals. The scrap magnet (i.e NdFeB) from wind turbines have been targeted for the present study. NdFeB magnets have surface flux density of about 0.4T. Therefore generally magnet is demagnetized at the initial stage of separation process and consecutively leaching is carried out. But this process consumes large amount of acids; and iron is rarely recovered in the usable form. After observing the research gap in this area, the project has been divided in three modules. In the first module, it is aimed to explore the effect of roasting on selective leaching of neodymium after complete characterization and demagnetization study of scrap magnet of wind turbines. The present study is intended to recover the neodymium from the scrap magnet by consuming lesser amount of acid/chemicals and obtaining iron in the usable form in the residue. And at last precipitation/SX will be carried out for the recovery of high pure rare earth compounds from leach liquor. In the second module, it is aimed to study the effect of pressure on chemical dissolution of rare earth metals from scrap magnet. It is expected to recover neodymium in the leach liquor at very low concentration of acid and high value iron oxide products by pressure leaching. In the third module, the idea is to study the feasibility for electrochemical dissolution of rare earth from scrap NdFeB magnet. Theoretically, difference in the reduction potential of rare earth element i.e REE (Nd) and non-REE (Fe) is large, ~ 1.8 which drives the idea for selective electrochemical dissolution of rare earth metal from scrap magnet. Electrochemical dissolution can offer the additional advantage of process control with potential (E) and current density in addition to the pH, which can play a major role for selective recovery. Apart from that expensive pre-treatment steps such as demagnetization or roasting can be avoided by direct electrochemical dissolution of scrap. Therefore, the aim of this module is to investigate the various aspect of electrochemical dissolution process of NdFeB magnet which has not been exposed yet. Along with that thermodynamic and kinetic study will be carried out for the above modules.

18NML/IPSG/2016/2017/685092016-04-012017-03-31Dr R.K SahuR&DFull tenure(1 year)Materials EngineeringAdvanced Materials (Structural, Bio, Magnetic) & P

Title: Development of graphene oxide based alcohol breath sensor

Abstract: Many vehicle accidents happen because of the consumption of alcohol beverages by the driver. Thus, drunk driving is a major issue almost in all countries. It is reported that around 70% of road accidents in India is due to the drunken driving. In view of the prevention of drunken caused accidents, alcohol breath analyzer should be fitted / installed near the driver’s seat of a vehicle, in which the ignition system of the vehicle will be deactivated automatically when it crosses the permit limit of alcohol (0.08 mg / L as per the government act). To accomplish the objective, this project focuses to develop a high sensitive alcohol breath sensor working at room temperature.

19NML/IPSG/2016/2017/72016-04-012017-03-31Ashok KR&DFull tenure(1 year)Extractive MetallurgyPyrometallurgy

Title: Control & Analysis of Inclusions in Electrical Steel – Module 2

Abstract: Residual non-metallic inclusion present in liquid steel are one of the causes of process interruptions during transfer of liquid steel, solidification, post processing of solidified steel and also ultimately affects the end properties. Specific to high silicon steel, presence of non-metallic inclusions mostly annoys its performance during magnetization and demagnetization process via, creating barkhaunsen noise. Controlling non-metallic inclusions with respect to size, morphology and chemical composition is highly essential to produce extra clean electrical steel. Therefore, one of the major objectives of this module is to perform special refining treatment to control the non-metallic inclusion during liquid steel processing and followed by critical analyses to assess the cleanliness of steel.

20NML/IPSG/2016/2017/70202016-04-012017-03-31Pratima MeshramR&DFull tenure(1 year)Extractive MetallurgyHydrometallurgy

Title: Extraction and separation of valuable metals from spent batteries(Metal Separation & thesis writing)

Abstract: The cathodic material of spent LIBs containing Li, Co, Mn and Ni, can be treated by sulphuric acid leaching in the presence of sodium bisulphite as a reducing agent. With 1 M H2SO4 and 0.075 M NaHSO3 as reducing agent ~96.7% Li, 91.6% Co, 96.4% Ni and 87.9% Mn were recovered in 4 h at 368 K and a pulp density of 20 g/L. From the leach liquor, >98% cobalt is recovered as cobalt oxalate powder by precipitation method. MnCO3, NiCO3 and Li2CO3 were almost quantitatively precipitated from the cobalt depleted filtrate. By this process, almost complete lithium can be recovered in the form of carbonate. With process intensification we could selectively recover different metals from the cathode active material of LIBs. Nickel-metal hydride batteries (Ni-MH) contain not only the base metals, but valuable rare earth metals (REMs) viz. La, Sm, Nd, Pr and Ce as well. To recover the valuable metals present in this battery, leaching of NiMH is carried out with H2SO4 and the conditions for the leaching of base & REMs from the spent batteries were optimized. The maximum dissolution of Ni, Co, Fe, Mn, Zn & REs was found to be 91.6, 97.8, 65.5, 93.5, 99.2% and 90.2% respectively in a single stage under the optimum conditions comprising of 2 M H2SO4, 100 g/L pulp density and 348 K temperature after 120 min of leaching. Further, separation of different metals from leach liquors of LIBs as well as NiMH using SX and IX is being planned in next module.

21NML/IPSG/2016/2017/737132016-04-012017-03-31Beena KuamriKnowledge ManagementFull tenure(1 year)R&D ManagementInformation Management

Title: Development of an e-management system for automation of ipsg project related activities of NML (Module II)

Abstract: Development and implementation of an e-project management information system for the overall management of in-house (OLP) projects of NML. The system shall enable online processes for proposals, reviewing and monitoring and reporting of OLPs. The system shall be developed in two stages i.e. 1.1 User Profiles and Proposals, 1.2. Reviewing and Monitoring 2. Reporting and Data Analytics. Out of the two modules 1.1 User Profiles and Proposals and 1.2. Reviewing are completed in the first phase and this proposal is for the development of the second module i.e. Monitoring, Reporting and Data Analytics.