Coal Preparation And Carbonisation
Coal Preparation And Carbonisation


The Department is responsible for carrying our R & D studies on Beneficiation of coking and non-coking coal to meet the requirements of different end users and to achieve excellence in Coke Making vis a vis utilization of industrial coal and coke rejects by development of new technology.

The Specific areas of Research are as Follows:

  1. Full Scale washability studies to determine cleaning characteristics of coking and non-coking coals including heat affected coals
  2. Washability & Characterization of Large dia Bore-Hole Cores.
  3. Development of flow sheet for beneficiation of coal
  4. Performance Evaluation and Technical Audit for Washeries
  5. Investigation on Beneficiation of Power Coals of India
  6. Multi-stage Washing of Low Volatile Coking Coal of Jharia, West and East Bokaro Coal Fields
  7. Prediction of practical yield based on the washability data
  8. Quality Monitoring of Imported and Indigenous coals.
  9. Pilot scale Investigation on the cleaning potentialities of Indian coals, both coking & non- coking.
  10. Beneficiation of coking coal fines (Gravity and Physico-Chemical process)
  11. Dry beneficiation of coal
  12. Dewatering studies of coarse and fine coals
  13. Coal carbonization
  14. Coke making
  15. Briquetting
  16. Development of coke making Techniques


Important Achievements of the Department

The major achievements are development of techniques for conducting systematic washability investigations on more than 2000 coal samples followed by its correlations and computer simulation for predicting practical yields at desired ash levels. Development of flow sheets for beneficiation of coking including Multi-stage Washing of LVC and non coking coals to meet the requirements of different end users. Development of technologies like mini-flotation plants, oleo-flotation and oil agglomeration for beneficiation of coal fines. Quality Monitoring of Imported and Indigenous coals. Dry beneficiation techniques for beneficiation of non coking coals, Providing criteria of washing, choice of washers for the new coal washeries. Performance Evaluation and Guarantee test for all Washeries In addition to the above, the department has an excellent faculty for training different persons from the industry, academic institute etc.,

Technology developed and transferred for non recovery type coke oven, soft coke oven. Developed Technology for stamp charging and coke quenching for all types of coke ovens. Technology for Activated Carbon. Process & technology for making briquettes & pellets from coal and coke. Installation of Pilot Non recovery and By Product Coke making plant with Stamp Charging facility Pilot Scale facilities for Coal & Coke fines utilization. Knowledge base of Coal & Coke characterization for steel making. Charcoal making & its utilization in Ferro Alloy industry
Human Resource Development in coke making industry through training


NameDesignationEmail & phonePhoto
Head of the Research Group
Dr T. Gouricharan

Chief Scientist & HORG E-mail : gouricharan[at]cimfr[dot]nic[dot]in, gouricharan[at]yahoo[dot]com
Phone : 9431954315
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Section 1: Coal Preparation
Shri U.S. Chattopadhyay

Principal Scientist E-mail : udaycfri97[at]rediffmail[dot]com
Phone : +91-9431746760 (M)
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Dr K.M.K.Sinha

Principal Scientist E-mail : kmk_sinha[at]rediffmail[dot]com
Phone : +91-9431168788 (M)
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Dr K.M.P. Singh

Sr. Scientist E-mail : singh_kmp[at]yahoo[dot]co[dot]in / kmpsingh69[at]gmail[dot]com
Phone : +91-326-2388254, 2396070 (O) , 09431512931, 09471192491 (M)
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Dr. Sanjay Choudhuri Sr. Tech. Officer (3) Service image
Shri P.S. Prasad

Sr. Tech. Officer (3) E-mail : prabha123cfri[at]rediffmail[dot]com
Phone : +91-9431318076 (M)
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Shri S. C Maji

Sr. Technical Officer (1) E-mail : subhash_1678[at]rediffmail[dot]com
Phone : +91-9835318053 (M)
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Mr. Saurabh Singh

Technical Officer
Research Group: Coal Preparation And Carbonisation
E-mail : saurabhsingh121047[at]gmail[dot]com
Phone : +91 91799 50359
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Shri S.N. Giri Lab. Attendant Service image
Shri N.B. Jha Lab. Attendant Service image
Shri S.K.Paramanik Lab. Attendant Service image
Shri C.B. Singh Lab. Attendant Service image
Section 2: Coal Carbonisation
Dr. Manish Kumar

Sr. Scientist & Head of the Coal Carbonisation E-mail : manishcfri[at]gmail[dot]com
Phone : +91-326-2230711(R), 09431319972 (M)
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Gautam Kumar Bayen

Sr Scientist E-mail : gkbayen[at]rediffmail[dot]com
Phone : +91-9709719400, 09471191811 (M)
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Dr. Monalisa Gangopadhyay Scientist E-mail : monalisa[dot]cimfr[at]gmail[dot]com
Phone : +91 9403268294
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Rajiv Ranjan

Senior Technical Officer (3) E-mail : rrcimfr[at]gmail[dot]com
Phone : +91-9431512906 (M)
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Tarun Pramanik

Technical Officer E-mail : tarun_642[at]rediffmail[dot]com
Phone : +91-9431746738 (M)
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Uma Sankar Ganguly

Lab Assistant E-mail : usganguly[at]rediffmail[dot]com
Phone : +91-9430374179 (M)
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Laxman Yadav

Lab. Attendant Phone : +91-7033520566 (M) Service image
Somra Oraon

Lab Assistant Phone : +91-9471782401 (M) Service image
Bhagawan Yadav

Group-D (N.T.) Phone : +91-8252909405 (M) Service image
21 Results
Sl. No.A brief description of Facilities/ Equipment/Tools/software with photos
Section 1: Coal Preparation

40 tph Coarse Coal Washing Pilot Plant

Heavy Medium Drum Separator

Rotary Breaker

Fine Coal Washing Pilot Plant

Baum Jig

Water Only Cyclone Test Rig

Flotation Cells

Bench Scale Heavy Medium Cyclone test rig

Contact Angle Measurement


Laboratory Ore Sorter


Column Flotation Test Rig


Section 2: Coal Carbonisation

Pilot Non Recovery Coke Oven With Stamp Charging

Pilot By product Coke Ovens with Stamp Charging, Waste Heat Boiler, By Product Storage and   Handling Section

Coke Ovens with Stamp Charging

Waste heat boiler

By Product storage & handling unit

Pilot Charcoal making Kiln

Pilot Coal and Coke Briquette Making Plant

CSR & CRI Apparatus

Lab Scale Coke Making facility


Sl. No.NameSponsorDurationObjectiveMajor output(if any)
Section 1: Coal Preparation
1To study the in plant heat loss of coal at Budge Budge thermal power station −CESC CESC, Kolkata Start − February ’2015 Completion- July ’ 2015

The objective of the project is to identify the reasons for GCV loss inside the plant and quantify the same and suggest the remedial action plan to reduce the loss. 

To reduce the in plant GCV loss by proper sampling and analysis

2Washability and laboratory flotation tests on the samples provided by TATA-JamadobaTata Steel, JamadobaStart − April ’ 2015 Completion- June;2015

The objective of the project is to carry out basic f & s tests of the coarser fraction and laboratory flotation tests on the finer below 0.5 mm fraction. 

Washability, Laboratory Flotation tests proximate and GCV tests on the samples provided by TATA-West Bokaro

3Tata West BokaroStart − April ’ 2015 Completion- June ’ 2015

The objective of the project is to carry out basic f & s tests of the 13-0.5 mm fraction and laboratory flotation tests on the below 0.5 mm fraction followed by proximate and GCV of 10 samples supplied by TATA. 

4Testing of coking coal fines in pilot scale pneumatic flotation machine supplied by MBEMBE Coal & Mineral Technology India Pvt. Ltd.Start - May ’ 2015 Completion- September ’ 2015

The objective is to carry out pilot plant studies on PNEUFLOT flotation machine using coking coal fines and comparing it with standard Denver flotation tests.

5Selective Drop breakage studies on coal and stone followed by flotation studies of coal fines supplied by IISCO, ChasnallaIISCO-ChasnallaStart - July ’ 2015 Completion- Ongoing

The objective is to carry out Selective Drop Breakage Tests on discrete pieces of Coal & Stone from a height of 3 m and processing of data to determine Selective Crushing Index for three different samples followed by flotation studies of the coal fines.

6Value Addition from coking coal slimes lying in waste settling ponds of washery (GAP-7032)CC&DAC, KolkataStart - February ’ 2014 Completion- March ’ 2016

The main objective is to reduce the environmental pollution by treating the coal slurry lying in waste settling ponds at coking coal washery through beneficiation routes and utilize the clean coal effectively.

7Development of Zero Waste Technology for processing and Utilization of Thermal Coal (ZWT-CUP) (ESC-009)Ministry of CoalStart - April ’ 2014 Completion- March;2017
To develop suitable technology for dry beneficiation of thermal coals from India to produce 34% ash and 25% ash clean coal
Wet beneficiation of the rejects of dry circuit for maximum recovery of combustibles from thermal coal 
8Washability studies of ONE coal sample supplied by TENOVA (SSP-7298)Delkor Technik India Private LimitedStart − August ’ 2015 Completion- November ’ 2015

The objective of the project is to study the washability characteristics of the coal sample supplied by Tenova.

Development of flow sheet

9Dewatering studies on coarse clean coal using pilot scale basket centrifuge (SSP-7299)TATA R & D CentreStart - August ’ 2015 Completion- Ongoing

The main objective of the project is to reduce the coarse clean coal surface moisture on the samples obtained from the commercial washery from the existing (to be measured at the time of sample collection) by 2 units.

10Washability and characterization studies of three coal samples supplied by MCL to KPCLKarnataka Power Corpn. Ltd.Start - August ’ 2015 Completion- Ongoing

The objective of the project is to study the washability characteristics of the coal samples supplied by MCL to KPCL, Generation of clean coal and rejects and its characterization w.r.t. to proximate and GCV.

11Washability studies of ONE coal sample supplied by JAYPEE (SSP-7303)Jaiprakash Associates Limited, NoidaStart − October ’ 2015 Completion- Completed

The objective of the project is to study the washability characteristics of the coal sample supplied by JAYPEE

12Sampling and Analysis of imported coal unloaded at port ends-MV Vishva Anand (SSP-7307)SAIL-KolkataStart − October ’ 2015 Completion- Ongoing

The main objective is to characterize the imported coals after collecting the representative samples during unloading at the port ends and preparation of samples for characterization as per the standard procedure and as desired by the sponsor.

13Sampling and Analysis at ten (10) locations of each subsidiary of CIL and SCCL (SSP-7313)Coal Controller, KolkataStart − December ’ 2015 Completion- Ongoing

The objective of the project is to carry out sampling, sample preparation and analysis w.r.t proximate and GCV from 10 sources of different coal subsidiaries 

14Development of on-line washability analyzerSSRC, Ministry of CoalStart − April ’ 2014 Completion- Ongoing ­ March ’ 2017

To develop an X-ray-based, on-line coal washability analyzer and demonstrate the capabilities of the analyzer by comparing the data from traditional float-sink tests with the data generated by the washability analyzer.

15Study on partial replacement of charcoal with lignite, processing of charcoal & lignite fines for value addition and development of existing charcoal kiln ( SSP- 7265)SNAM Alloys Private Limited, Tamil NaduFrom October, 2015 To June, 2016

Partial replacement of charcoal reductant with lignite in Ferro- Alloy production

Lignite char prepared under specified conditions found with competent reducibility character and may opt for partial replacement of charcoal comparatively a higher cost input raw material
16Study on the potentiality of making briquettes and pellets from coke fines generated during the production of coke from NE coals (SSP-7264)Pride Coke Private Limited, AssamFrom September, 2015 To April, 2016

Explore on the potentiality of making briquettes from coke fines

17Testing & Analysis of coal, coke and petroleum oils (CLP-3002)CIL, Tata and other private companies (year to year - continuous in nature )April 2015 To March 2016
Testing & analysis of samples as per the requirement of outside parties Major outputs (if any)
Timely completion of analysis & submission of reports
18Study on the preparation of reactive coke from lignite for ferro-alloy production.In-houseJune 2014 To May 2016

The objective of the study is preparing improved coke using biomass char and high swelling coal.

Good quality coke pencil was prepared using up-to 10 % of biomass char with high swelling coal having swelling Index 7.

Section 2: Coal Carbonisation
19 Results