Pre- Feasibility Report
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PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT PRE- FEASIBILITY REPORT 1 PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT 1. EXECUTIVE SUMMARY Project Name : Garbham Manganese Mines : of M/s. Rashtriya Ispat Nigam Limited Visakhapatnam Steel Plant Extent of Mining Lease : 653.690 Acres (264.540 Hec.) Location of mine : Garbham Village, : Merakamudidam Mandal, : Vizianagaram district, : Andhra Pradesh. Latitude : 83 0 25' 37'' & 83 0 28' 20'' Longitude 180 22' 14'' & 18 0 23' 03'' Topo sheet number 65 N/7 Name of the Mineral : Manganese Approved production capacity of mine : 50 TPD vide CFO dtd.20.03.2014 Method of mining : Opencast mechanized mining : Drilling and blasting is proposed. Drilling/Blasting No of working days : 300 days Water demand : 10 KLD Sources of water : Ground water Man power : 23 Nos. Solid Waste : Overburden and used lubricating oil Nearest railway station : Garividi Railway station- 15 km Nearest airport : Visakhapatnam Airport – 100 km 2 PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT 2. INTRODUCTION OF THE PROJECT/ BACKGROUND INFORMATION (i) Identification of Project and Project Proponent. In case of mining project, a copy of mining lease/letter of intent should be given The project is proposed by M/s. Rashtriya Ispat Nigam Limited/ Visakhapatnam Steel Plant. The name of the project is GARBHAM MANGANESE MINE. The lease document the mine is attached. The details of the existing project is as given below: Name of the applicant : M/s. Rashtriya Ispat Nigam Limited/ Visakhapatnam Steel Plant Address of the applicant : DGM(Mines) Garbham Manganese Mine, Rashtriya Ispat Nigam Limited, Visakhapatnam Steel Plant, GARBHAM-535102, Merakamududam Mandal,Vizianagaram Dist. (Andhra Pradesh) Status of mine : Working with a sanctioned capacity 50 TPD. The present proposal is for Modification/Amendment to Environmental Clearance issued vide No J-11015/375/2005-IA.II(M) Dated 04.10.2006 Mine Plan was approved by Indian Bureau of Mines for 5 years for the period from 2013-14 to 2017-18 (ii) Brief Information about the Project The mining lease of 653.690 acres in survey nos. 251,252/1,252/2,252/3,253,254,255,256 & 257( 145.890 Acres) 120,122,123,124/1,124/2,124/4,124/5,124/8,124/9,125 to 137,205,206,228 to 230, 298 to 306,308,374 to 376 & 379(507.800Acres) of Garbham Village located in Government land in 3 PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT Garbham Village, Merakamudidam Mandal, Vizianagaram district, Andhra Pradesh. The mining lease was granted for a period of 20 years w.e.f. 06.10.1982 and was renewed for further period of 20 years and is valid up to 07.10.2022. The mine was opened on 20.09.1995. It is now producing 15,000 TPA Manganese Ore by semi machenised opencast mining. The exploration was done by M/s J.J. Associates, 10-51-A, Kailashmettta, Visakhapatnam-03. The reserves estimated are 12,98,000 MT. The balance life of the mine is 35 years. The E.C. was granted in 2006 for crushing and screening of manganese ore to be done by manual means. Now, it is proposed to produce the same quantity by change in mining method i.e. from manual means to mechanized means of screening of manganese ore. (iii) Need for the project and its importance to the country and or region. It’s a captive mine of Visakhapatnam Steel Plant(VSP). The Manganese Ore is used in steel making process as de-sulphurisation and de- oxidation agent for converting the Iron ore into high grade iron and steel. VSP is holding company of Rashtirya Ispat Nigam Limited(RINL) and it is the only shore based integrated steel plant. (iv) Demand-Supply Gap The mineral in Garbham ore body has the average grade as below: Mn% Fe2O3% SiO2% Al2O3% P% S% 30.03 14.97 13.61 5.27 0.26 Traces The cut off grade required for Visakhapatnam Steel Plant is as below: Radical % T.Mn 28% T.Fe 16% SiO2 25% Al 0.61% P 0.4% Size Lump:-60 mm to 10 mm Fines: -10mm to +3mm Based on the above, the direct grade supplied from the captive mine 4 PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT contains manganese content of 25% to 35%. The high grade ore containing more than 35% grade is blended with blend able low grade ore of 10% to 25% to supply the required grade to the steel plant. The occurrence of massive ore is established to be only 10%. The friable ore type of mineralization occurs in granular form with loose bonding and moderate compaction. Hence, the powdery ore is the most common form in the available deposit comprising of more than 70% of the bore body. Whereas, the demand at VSP for Manganese Lump is 2000 MT per annum. Through the existing means of manual method, Garbham Manganese Mines is able to generate only 600 MT per annum. The modernization through mechanized screening would bring down the demand supply gap. (v) Imports vs. Indigenous production. NOT APPLICABLE (vi) Export Possibility. NOT APPLICABLE (vii) Domestic / export Markets. NOT APPLICABLE (viii) Employment Generation The Proposed change in mining method/mineral beneficiation would not bring down the existing man power which is 23 persons. The majority of the existing man power is residing in the nearby vicinity. 3. PROJECT DESCRIPTION (i) Type of Project Including Interlinked and Interdependent 5 PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT Projects, If Any. Garbham Manganese Mine is the captive mine of RINL, VSP for meeting its manganese ore requirement. (ii) Location (map showing general location, specific location, and project boundary & project site layout) with coordinates. Garbham Manganese Mine is located in Garbham Village, Merakamudidam Mandal, Vizianagaram District, Andhra Pradesh, PIN: 535 101. The mining lease is of 653.690 acres in survey nos. 251,252/1,252/2,252/3,253,254,255,256 & 257(145.890 Acres) 120,122,123,124/1,124/2,124/4,124/5,124/8,124/9,125 to 137,205,206,228 to 230, 298 to 306,308,374 to 376 & 379(507.800Acres) of Garbham Village. The coordinates of the lease are as below: Survey of India Topo : 65 N/7 sheet No. Latitude : 830 25’ 37” & 830 28’ 20” Longitude : 1800 22’ 14” & 180 23’ 03” (iii) Details of Alternate Sites considered and the basis of selecting the proposed site, particularly the environmental considerations gone into should be highlighted. No alternate site was considered as the project is mineral specific and site specific. The proposed screening is to be done from the existing dump. Earlier manual screening was carried out in the same location, for which EC was obtained.The envisaged impact on air & water regime due to modernization of the activity, has no change. (iv) Size or magnitude of operation The existing EC is for 50 TPD. With the modernization no change is proposed in the quantity.. 6 PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT (v) Project description with process details (a schematic diagram/flow chart showing the project layout, components of the project etc. should be given) Mining is carried out by opencast semi mechanized mining method. Mining is carried out in existing dumps and in-situ. At present the excavation and transport of Mineral and over burden is done by HEMM( Heavy Earth Moving Machinery). The over sized boulders are segregated, broken, screened and stacked manually. The operations are limited to General shift, 8 hours. Now it is proposed to set-up crushing and screening plant initially powered by DG set by installing a Double Deck Screen due to which size wise ore segregation is possible in a simplified and fast manner. Hence the rated handling of 50 TPD is achieved with two hour operation. This will improve the quality of sized ore and decreased exposure to fugitive dust emissions. The existing HEMM details are as follows:- Mining Machinery Used in Electrical/ Type of Capacity of No.of opencast/ Non-Electrical machinery each unit units underground (specify) (specify) BACK HOE 1.000 CUM 1 Non Electrical Opencast DOZER 155.000 HP 1 Non Electrical Opencast 12.000 TIPPER 1 Non Electrical Opencast CUM 2000.000 WATER TANKER 1 Non Electrical Opencast LITRE FRONT END 2.000 CUM 1 Non Electrical Opencast LOADER JEEP/TRACTOR 47.000 HP 1 Non Electrical Opencast 7 PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT GENERATOR 55.000 1 Non Electrical Opencast (DIESEL) KWH 8 PROJECT: GARBHAM MANGANESE MINES, GARBHAM APPLICANT: RASHTRIYA ISPAT NIGAM LIMITED/ VISAKHAPATNAM STEEL PLANT (vi) Raw material required along with estimated quantity, likely source, marketing area of final products. Mode of transport of raw material and finished product. No external raw material is required for the project. The finished products i.e., Manganese Ore Fines & Lump are transported by road to Visakhapatnam Steel plant. (vii) Resource optimization/recycling and reuse envisaged in the project, if any, should be briefly outlined. The earlier lessees mined this area for around a century. The overburden along with low grade ore was dumped on edges of the pits. The total material available in the dump will be segregated in to Lump & Fines and the quantity will be consumed for steel making as it suits the grade requirement. The utilisaiton of high grade ore from in-situ mining is optimised by using the dump material and the manganese ore is conserved.