DOCSLIB.ORG

Development of an Innovative Copper Flowsheet at Phu Kham

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Development of an Innovative Copper Flowsheet at Phu Kham Development of an Innovative Copper Flowsheet at Phu Kham M F Young and I Crnkovic Phu Kham Location in Laos Phu Kham Plant Layout Plant Layout showing • Primary Grinding • Rougher Flotation • IsaMill Regrinding Phu Kham Flowsheet GYRATORY MILL CYCLONES CRUSHER SAG MILL No.1 BALL MILL COARSE ORE STOCKPILE ROUGHER FLOTATION CELLS ROUGHER PROCESS 1st CLEANER FLOTATION CELLS CONCENTRATE WATER CYCLONES TAILINGS DAM ISAMILL 2nd CLEANER FLOTATION CELLS CONCENTRATE THICKENER 3rd CLEANER FLOTATION CELLS CONCENTRATE TANK CONCENTRATE FILTER CONCENTRATE STOCKPILE Phu Kham Flowsheet • 12.8 Mt/a of copper-gold bearing ore from the open pit • Plant Feed Grades are 0.75% Cu and 0.33g/t of Au and 3.8g/t of Ag • Concentrate quality is +25% Cu, 7 g/t of Au and 60g/t of Ag • Primary Grinding Circuit contains – 34 ft × 18 ft (13MW) SAG mill – 24 ft × 39 ft (13 MW) ball mill • Regrinding Circuit contains – M10,000 (2.6MW) IsaMill • Ore has fine locking of copper and gangue minerals • Ore requires regrinding rougher concentrate to 38 microns to make good quality final copper concentrate Cleaner Feed Performance • IsaMill currently grinds from 90 microns to 38 microns • Cleaner feed performance at 38 microns and 25 microns • Laboratory Flotation Tests Cleaner Grade-Recovery Profile For Cu-Afternoon Test 40 30 20 Cum Cu Grade 10 No Regrind (PM) With Regrind (PM) 0 20 40Cum Cu Recovery 60 80 100 New Phu Kham Flowsheet • Cleaning Circuit was overloaded at times • Fine grinding to improve concentrate quality, slowed flotation rate and increase frothing issues in the cleaner circuit, decreasing the performance of the cleaner circuit • Jameson Cell with froth washing was installed at the head of the cleaner circuit to increase cleaning capacity • This new circuit allowed final concentrate to be produced from the IsaMill regrind product in one flotation cell and remove more than half the load from the existing cleaning circuit New Phu Kham Flowsheet GYRATORY MILL CYCLONES CRUSHER SAG MILL No.1 BALL MILL COARSE ORE STOCKPILE ROUGHER FLOTATION CELLS ROUGHER PROCESS 1st CLEANER FLOTATION CELLS CONCENTRATE WATER CYCLONES TAILINGS DAM ISAMILL 2nd CLEANER FLOTATION CELLS CONCENTRATE JAMESON CELL THICKENER 3rd CLEANER FLOTATION CELLS CONCENTRATE TANK CONCENTRATE FILTER CONCENTRATE STOCKPILE Layout of IsaMill and Jameson Cell Jameson Cell Flotation at Phu Kham Phu Kham Jameson Cell Grade-Recovery Curve Performance • IsaMill Cyclone Overflow P80=20 microns • IsaMill Discharge P80=38 microns • Feed (Rougher Conc) Grade = 3-5% Cu 30.00 29.00 28.00 27.00 26.00 (%) 25.00 grade Cu 24.00 Cyclone overflow only 23.00 Cyclone oveflow + IsaMill discharge 22.00 21.00 20.00 50% 55% 60% 65% 70% 75% 80% 85% 90% 95% Cu recovery (%) Jameson Cell Size by Size Recovery on IsaMill Cyclone Overflow Stream Phu Kham Jameson Cell Size-By-Size Recovery Cu CYC OF 1 Cu CYC OF 2 100.00% 90.00% 80.00% 70.00% 60.00% 50.00% Recovery % 40.00% 30.00% 20.00% 10.00% 0.00% 0 1020304050607080 Size Fraction New Cleaning Circuit Results • Jameson Cell was initially commissioned on the regrind cyclone overflow • Cyclone Overflow was fine (P80=20 microns) and well liberated • Jameson Cell produced 25.5% to 27.5% Cu grade at 75% to 90% Cu recovery on this stream • Jameson Cell produced high recovery in all size fractions for this stream • Jameson Cell then treated cyclone overflow plus IsaMill discharge • Jameson Cell still produced high grade copper concentrate at 26% to 29% Cu grade at 55% to 60% copper recovery • The recovery of the coarser size fraction was lower due to the locking and lower liberation in the size fractions Redox Measurements in Plant Low Eh reduces the copper mineral flotation performance Impact of Inert Grinding - Chalcopyrite The Effect of Eh – Mt Isa Cu Ore The critical importance of the grinding environment on fine particle recovery in flotation - Stephen Grano - 2009 Cleaner Feed Performance The Effect of Aeration in Laboratory Float Cu Grade-Recovery Curve-C1F 30 25 20 15 Cu % Grade 10 5 C1F Without Aeration C1F With Aeration RCOF 0 0 102030405060708090100 Cu Recovery % IsaMill Discharge Performance The Effect of Aeration in Laboratory Float Grade Recovery Curves (Total Cu) IMD 25 20 15 10 5 IMD Without Aeration IMD With Aeration 0 50 60 70 80 90 100 HYPERSPARGE Supersonic Gas Injection Compact Ball Valve for Secure Fine Bubble Generation Isolation Able to generate much finer bubbles for fast gas transfer rates Solenoid Control Valve and flexible connection hose Failsafe In Line Check Valve to prevent Slurry Spills Sturdy Barrel Union HyperSparge Connection for rapid maintenance a L k High Pressure sparge Spool Piece and High Pressure Supersonic Gas Seal for safe Injection Nozzle Low Pressure Insertion and for high intensity Ring sparge removal mass transfer Gas Flow HyperSparge installed in IsaMill Discharge line Phu Kham – Effect of Aeration Plant Surveys Phu Kham Jameson Cell Performance Before and After Aeration Before Hypersparge After Hypersparge 28.0 27.0 26.0 25.0 Grade % Cu 24.0 23.0 22.0 40% 45% 50% 55% 60% 65% 70% 75% 80% Recovery % Cu Phu Kham – Effect of Aeration Plant Surveys Phu Kham Jameson Cell Size-By-Size Recovery Before HyperSparge After HyperSparge 100.00% 90.00% 80.00% 70.00% 60.00% 50.00% Recovery % Recovery 40.00% 30.00% 20.00% 10.00% 0.00% 0 1020304050607080 Size Fraction Summary • IsaMill regrinds rougher concentrate to 38 micron to improve the final copper concentrate quality • Cleaner feed performance at 38 microns is 25-28% Cu in final concentrate • and regrinding 25 microns can produce +30% Cu in final concentrate • Jameson Cell installation was an innovative flowsheet change to removed load from cleaning circuit and increased plant capacity and decrease cleaner circuit frothing issues • Aeration of Cleaner feed has improve performance and fines recovery and selectivity • Jameson Cell has allowed the IsaMill to operate at Increase power to improve the circuit performance..
Load more

Recommended publications
  • From Base Metals and Back – Isamills and Their Advantages in African Base Metal Operations
    The Southern African Institute of Mining and Metallurgy Base Metals Conference 2013 H. de Waal, K. Barns, and J. Monama From base metals and back – IsaMills and their advantages in African base metal operations H. de Waal, K. Barns, and J. Monama Xstrata IsaMill™ technology was developed from Netzsch Feinmahltechnik GmbH stirred milling technology in the early 1990s to bring about a step change in grinding efficiency that was required to make Xstrata’s fine-grained lead/zinc orebodies economic to process. From small-scale machines suited to ultrafine grinding, the IsaMill™ has developed into technology that is able to treat much larger tonnages, in coarser applications, while still achieving high energy efficiency, suited for coarser more standard regrind and mainstream grinding applications. The unique design of the IsaMillTM, combining high power intensity and effective internal classification, achieves high energy efficiency and tight product distribution which can be effectively scaled from laboratory scale to full-sized models. The use of fine ceramic media also leads to significant benefits in downstream flotation and leaching operations. These benefits are key drivers for the adoption of the technology into processing a diverse range of minerals worldwide, and offer major opportunities for power reduction and improved metallurgy for the African base metal operations. Keywords: IsaMill, regrind, energy efficiency, inert grinding. Introduction The development of the IsaMillTM, by MIM (now GlencoreXstrata) and Netzsch Feinmahltechnik GmbH, was initiated to enable the development of the fine-grained ore deposits at Mt Isa and McArthur River in Northern Australia. To liberate the valuable minerals and so produce a saleable concentrate this ultrafine-grained ore needed to be ground to a P80 of 7 μm.
    [Show full text]
  • The Stannaries
    THE STANNARIES A STUDY OF THE MEDIEVAL TIN MINERS OF CORNWALL AND DEVON G. R. LEWIS First published 1908 PREFACE THEfollowing monograph, the outcome of a thesis for an under- graduate course at Harvard University, is the result of three years' investigation, one in this country and two in England, - for the most part in London, where nearly all the documentary material relating to the subject is to be found. For facilitating with ready courtesy my access to this material I am greatly indebted to the officials of the 0 GEORGE RANDALL LEWIS British Museum, the Public Record Office, and the Duchy of Corn- wall Office. I desire also to acknowledge gratefully the assistance of Dr. G. W. Prothero, Mr. Hubert Hall, and Mr. George Unwin. My thanks are especially due to Professor Edwin F. Gay of Harvard University, under whose supervision my work has been done. HOUGHTON,M~CHIGAN, November, 1907. CONTENTS INTRODUCTION purpose of the essay. Reasons for choice of subject. Sources of informa- tion. Plan of treatment . xiii CHAPTER I Nature of tin ore. Stream tinning in early times. Early methods of searching for ore. Forms assumed by the primitive mines. Drainage and other features of medizval mine economy. Preparation of the ore. Carew's description of the dressing of tin ore. Early smelting furnaces. Advances in mining and smelt- ing in the latter half of the seventeenth century. Preparation of the ore. Use of the steam engine for draining mines. Introduction of blasting. Pit coal smelting. General advance in ore dressing in the eighteenth century. Other improvements.
    [Show full text]
  • Challenges Related to the Processing of Fines in the Recovery of Platinum Group Minerals (Pgms)
    minerals Review Challenges Related to the Processing of Fines in the Recovery of Platinum Group Minerals (PGMs) Kirsten C. Corin 1,* , Belinda J. McFadzean 1, Natalie J. Shackleton 2 and Cyril T. O’Connor 1 1 Centre for Minerals Research, Chemical Engineering Department, University of Cape Town, P Bag X3, Rondebosch, Cape Town 7700, South Africa; [email protected] (B.J.M.); [email protected] (C.T.O.) 2 Minerals Expertise Tech Pty Ltd., Germiston 2007, South Africa; [email protected] * Correspondence: [email protected] Abstract: In order to increase the recovery of PGMs by flotation, it is necessary to optimise the liberation of the key minerals in which the platinum group elements (PGEs) are contained which include sulphides, arsenides, tellurides, and ferroalloys among others, while at the same time ensuring the optimal depression of gangue minerals. In order to achieve this, comminution circuits usually consist of two or three stages of milling, in which the first stage is autogeneous, followed by ball milling. Further liberation is achieved in subsequent stages using ultra-fine grinding. Each comminution stage is followed by flotation in the so-called MF2 or MF3 circuits. While this staged process increases overall recoveries, overgrinding may occur, hence creating problems associated with fine particle flotation. This paper presents an overview of the mineralogy of most of the more significant PGM ores processed in South Africa and the various technologies used in comminution circuits. The paper then summarises the methodology used in flotation circuits to optimise recovery Citation: Corin, K.C.; McFadzean, of fine particles in terms of the collectors, depressants, and frothers used.
    [Show full text]
  • Evolution of the Isamill™ Into Magnetite Processing
    EVOLUTION OF THE ISAMILL™ INTO MAGNETITE PROCESSING Greg Rasmussen, Xstrata Technology Pty Ltd Tommy Do , Ernest Henry Mining Michael Larson, Xstrata Technology Pty Ltd Katie Barns, Xstrata Technology Pty Ltd Xstrata Technology • Mount Isa Mines (MIM), a large Australian mining company, was acquired by Xstrata in 2003 who then merged with Glencore in 2013 • MIM internal technology group was re-named Xstrata Technology (XT) and became an independent technology developer and supplier to the global minerals industry with 250 staff worldwide • The equipment and processes which are marketed by XT are developed in our own operations • XT offers full-package solutions including: • Equipment and processes • Engineering • Commissioning and Training • Dedicated after-market support IsaMill™ Technology Development ™ • Development of IsaMill driven by inability Broken Hill to efficiently treat fine grained orebodies • Late 1980s, Xstrata required 7µm grind for new Pb/Zn orebodies in Australia • Conventional mining technologies tested (1975-1990), but 0 40 micron − Too high power consumption to achieve target size McArthur River − Ball/tower mills ineffective below 20-30μm − Negative influence of steel grinding on flotation 0 40 micron IsaMill™ Technology Development A technology was found... • Horizontal Bead Mills − Used in industries other than mining (pharmaceuticals, paint, food, etc.) − Small, batch scale − Very expensive and exotic media types • Cross-over into mining required: − Much larger scale − Continuous operation − Ability to use cheap,
    [Show full text]
  • Regrinding and Fine Grinding Technology - the Facts and Myths
    A review of regrinding and fine grinding technology - the facts and myths Dr Alex Jankovic, Metso Minerals Process Technology Asia-Pacific, [email protected] ABSTRACT Stirred milling technology is used extensively for fine grinding in the ceramic, paint and pharmaceutical industrials. It has been recently adopted by the mining industry. Specific conditions in the mining industry require somewhat different operation of this technology. However, the basic principles of operation are the same and the accumulated knowledge and experience developed in these other industries could be used to assist mining operations to get the most benefit from the stirred milling technology. This paper presents some of the important aspects of stirred milling operation discussed in the literature and not commonly known within the mining industry: grinding media motion, active grinding volume, wear of grinding media and energy transfer, stress intensity, scale-up issues and flow limitations. The intention is to introduce a “different perspective” of stirred milling technology, in particular highlighting its potential benefits and limitations. HISTORY Stirred milling technology may be regarded as relatively new in minerals processing, however it is a mature and extensively used technology in the ceramic, paint and pharmaceutical industries. The latest development of this technology is in the area of “Nano-grinding” for grinding down to nano-sizes. One may say that stirred mills used today in mining and minerals processing are equivalent to the early models of stirred mills used in parallel industries. The most commonly used stirred mills in mining and minerals processing are the VERTIMILL®, STIRRED MEDIA DETRITOR (SMD®) and ISAMILL® and a brief history of their development is given below.
    [Show full text]
  • Isamill™ Technology Used in Efficient Grinding Circuits
    1 IsaMill™ Technology Used in Efficient Grinding Circuits B.D. Burford1 and L.W. Clark2 High intensity stirred milling is now an industry accepted method to efficiently grind fine and coarse particles. In particular, the IsaMill™, which was invented for, and transformed the fine grinding industry, is now being included in many new comminution circuits in coarser applications. While comminution has always been regarded as important from a processing perspective, the pressure being applied by environmental concerns on all large scale power users, now make highly energy efficient processes more important than ever. The advantages that were developed in fine grinding in the early IsaMill™ installations have been carried over into coarse grinding applications. These advantages include a simple grinding circuit that operates in open circuit with a small footprint, the ability to offer sharp product size classification, as well as the use of inert media in a high energy intensive environment. This paper will examine the use of IsaMill™ technology in fine grinding (P80 below 15 micron), and examine the use of the technology in conventional grinding applications (P80 20 - 150 µm). Recent installations will be examined, including fine and coarse grinding applications, as well as the recent test work that was undertaken using an IsaMill™ in a primary grinding circuit, and the resulting circuit proposal for this site. While comminution has been relatively unchanged for the last century, the need to install energy efficient technology will promote further growth in IsaMill™ installations, and result in one of the biggest challenges to traditional comminution design. 1. Senior Process Engineer, Xstrata Technology, L4, 307 Queen Street, Brisbane 4000, Qld, Australia 2.
    [Show full text]
  • The Effect of Regrinding Chemistry and Particle Breakage Mechanisms on Subsequent Cleaner Flotation Xumeng Chen Beng and Meng in Materials Engineering
    The Effect of Regrinding Chemistry and Particle Breakage Mechanisms on Subsequent Cleaner Flotation Xumeng Chen BEng and MEng in Materials Engineering A thesis submitted for the degree of Doctor of Philosophy at The University of Queensland in November 2014 Sustainable Minerals Institute Julius Kruttschnitt Mineral Research Centre Abstract Regrinding rougher flotation concentrates is typically used to liberate valuable minerals from gangue prior to the cleaner separation stage in processing of low grade ores. Compared to the rougher flotation after primary grinding, it is usually more challenging to achieve a satisfactory performance in post-regrind cleaner flotation especially when fine particles are generated. One main factor which results in this reduction in flotation is the unsuitable particle surfaces produced after regrinding. However, this factor is not usually considered when designing and optimizing the regrinding process. Extensive studies have demonstrated that grinding chemistry can influence mineral floatability. However, earlier studies focused on primary grinding and rougher flotation rather than regrinding and cleaner flotation. In addition, different types of regrind mills are used in industry, and these provide different particle breakage mechanisms which may also influence mineral floatability. Therefore, the overall objective of this thesis study is to investigate the effects of regrinding chemistry and particle breakage mechanisms on the cleaner flotation. The implementation of regrinding in the copper and pyrite flotation circuits at Telfer gold mine was taken as a case study and four research areas were addressed with the objective of developing fundamental understanding to provide practical guidance for the plant operation. The four areas investigated are: 1. Effect of regrinding chemistry on copper activation of pyrite and its flotation; 2.
    [Show full text]
  • Telfer Processing Plant Upgrade – the Implementation of Additional
    Telfer Processing Plant Upgrade – The Implementation of Additional Cleaning Capacity and the Regrinding of Copper and Pyrite Concentrates D R Seaman1, F Burns2, B Adamson3, B A Seaman4 and P Manton5 ABSTRACT The Telfer concentrator, located in the Great Sandy Desert of Western Australia, consists of a dual train gold/copper operation processing ore from one underground and, currently, two open pit mines with differing mineralogy. The fl otation circuit of each train was designed to operate in several modes depending on the feed mineralogy. The majority of ore mined at Telfer is processed in a sequential mode where copper minerals are fi rst fl oated into a saleable copper concentrate followed by the fl otation of an auriferous pyrite concentrate which is treated in an on-site hydrometallurgical plant (carbon-in-leach (CIL)). Gold is recovered as a gravity product within the primary grinding circuit, to the copper concentrate, and to a lesser extent, the CIL circuit. Since Telfer was re-opened, with a new concentrator, in 2004, the processing plant has struggled with poor copper concentrate grades, partially due to the excessive entrainment of non-sulfi de gangue minerals in the copper fl otation circuit and, more recently, due to composite copper particles produced when processing ore from a supplementary satellite pit that has not previously been processed through the new Telfer concentrator. Gold recoveries in the CIL circuit have also been below industry standard. This paper presents the implementation of recent changes made to the circuit to address these performance issues. The reconfi guration of the circuit has involved the installation of the following major equipment items: two ISAMills™ in ultra-fi ne grinding applications (one in the copper circuit and one in the pyrite circuit), two Jameson Cells to improve fi ne gangue rejection and a bank of 5 × Outotec TC30s to recovery copper and gold from the reground pyrite stream.
    [Show full text]
  • Xstrata Technology Update Edition 13 – April 2012 Building Plants That Work
    xstrata technology update Edition 13 – April 2012 Building plants that work You have to get a lot of things it takes another operator to get them right to build a plant that works. right. Someone who has lived through the problems, had to do the maintenance, operated during a midnight power Of course the big picture must be right – doing the right project, in the right place, failure, cleaned up the spill. Someone at the right time. who has “closed the loop” on previous designs; lived with previous decisions After that, the devil is in the detail. You and improved them, over and over. need a sound design, good execution, good commissioning, and ongoing This is why Xstrata Technology provides support after commissioning. You need a technology “package”. Just as a car to operate and maintain your plant in is more than an engine, technology is the long run, long after the construction more than a single piece of equipment. company has left. That’s when all the Technology is a system. All the elements “little” details become important – how of the system have to work with each easy is it to operate, how good is the other and with the people in the plant. maintenance access, what happens in We want our cars designed by people a power failure, where are the spillage who love cars and driving. So should points and how do we clean them our plants be designed by people with up? Are the instruments reliable and experience and passion to make each is the process control strategy robust one work better than the last.
    [Show full text]
  • Certej Updated Definitive Feasibility Study Summary Technical Report
    Certej Updated Definitive Feasibility Study Summary Technical Report Authors:- Patrick Forward February 26th 2009 Neil Liddell Tony Jackson Certej Updated Definitive Feasibility Study Summary Technical Report Contents 3. SUMMARY ................................................................................................................................................................... 1 4. INTRODUCTION AND TERMS OF REFERENCE ................................................................................................................ 6 5. RELIANCE ON OTHER EXPERTS ...................................................................................................................................... 7 6. PROPERTY DESCRIPTION AND LOCATION ..................................................................................................................... 8 7. ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE, AND PHYSIOGRAPHY ............................................. 10 7.1. ACCESS ............................................................................................................................................................. 10 7.2. CLIMATE ........................................................................................................................................................... 10 7.3. LOCAL RESOURCES AND INFRASTRUCTURE ....................................................................................................... 10 7.4. PHYSIOGRAPHY ...............................................................................................................................................
    [Show full text]
  • The Geological Occurrence, Mineralogy, and Processing by Flotation of Platinum Group Minerals (Pgms) in South Africa and Russia
    minerals Review The Geological Occurrence, Mineralogy, and Processing by Flotation of Platinum Group Minerals (PGMs) in South Africa and Russia Cyril O’Connor 1,* and Tatiana Alexandrova 2 1 Department of Chemical Engineering, Centre for Minerals Research, University of Cape Town, Cape Town 7701, South Africa 2 Department of Minerals Processing, St Petersburg Mining University, St Petersburg 199106, Russia; [email protected] * Correspondence: [email protected] Abstract: Russia and South Africa are the world’s leading producers of platinum group elements (PGEs). This places them in a unique position regarding the supply of these two key industrial commodities. The purpose of this paper is to provide a comparative high-level overview of aspects of the geological occurrence, mineralogy, and processing by flotation of the platinum group minerals (PGMs) found in each country. A summary of some of the major challenges faced in each country in terms of the concentration of the ores by flotation is presented alongside the opportunities that exist to increase the production of the respective metals. These include the more efficient recovery of minerals such as arsenides and tellurides, the management of siliceous gangue and chromite in the processing of these ores, and, especially in Russia, the development of novel processing routes to recover PGEs from relatively low grade ores occurring in dunites, black shale ores and in vanadium-iron-titanium-sulphide oxide formations. Keywords: Russia; South Africa; PGMs; geology; mineralogy; flotation Citation: O’Connor, C.; Alexandrova, T. The Geological Occurrence, Mineralogy, and Processing by Flotation of Platinum Group Minerals (PGMs) in South 1. Introduction Africa and Russia.
    [Show full text]
  • Aa Box ABATTOIR ABBEY Abbey Barn Abbey Barn Abbey Bridge Abbey Bridge Abbey Church Abbey Church Abbey Gate Abbey Gate Abbey Gate
    Aa Box Abbey Bridge USE : MOTORING TELEPHONE BOX USE : ABBEY ABATTOIR Abbey Bridge UF : Slaughter House USE : BRIDGE UF : Butching House BT : FOOD PROCESSING SITE Abbey Church RT : BUTCHERY SITE USE : ABBEY RT : SHAMBLES RT : SMOKE HOUSE Abbey Church RT : GLUE FACTORY USE : CHURCH RT : TANNERY RT : HORSEHAIR FACTORY Abbey Gate SN : A building where animals are slaughtered. USE : ABBEY ABBEY Abbey Gate UF : Benedictine Abbey UF : Arrouiasian Abbey USE : GATE UF : Augustinian Abbey UF : Victorine Abbey Abbey Gatehouse UF : Tironian Abbey USE : GATEHOUSE UF : Savigniac Abbey UF : Premonstratensian Abbey Abbey Gatehouse UF : Franciscan Abbey USE : ABBEY UF : Cistercian Abbey UF : Cluniac Abbey Abbey Kitchen UF : Bridgettine Abbey USE : ABBEY UF : Convent Chapel UF : Abbey Barn Abbey Kitchen UF : Abbey Bridge USE : KITCHEN UF : Abbey Church UF : Abbey Gate Abbey Wall UF : Abbey Gatehouse USE : PRECINCT WALL UF : Abbey Kitchen UF : Independent Abbey UF : Tironensian Abbey Abbots House UF : Conventual Chapel USE : MONASTIC DWELLING UF : Conventual Church UF : Farmery Abbots Lodging BT : RELIGIOUS HOUSE USE : MONASTIC DWELLING RT : ALMONRY RT : GUEST HOUSE ABBOTS PALACE RT : KITCHEN BT : PALACE RT : CHAPTER HOUSE SN : The official residence of an abbot. RT : CATHEDRAL RT : PRECINCT WALL ABBOTS SUMMER PALACE RT : DOUBLE HOUSE BT : PALACE RT : FRIARY RT : BISHOPS SUMMER PALACE RT : MONASTERY SN : An official residence of an abbot during the summer RT : NUNNERY months. RT : PRECEPTORY RT : PRIORY ABLUTIONS BLOCK RT : GATEHOUSE BT : DOMESTIC MILITARY BUILDING RT : REFECTORY BT : WASHING PLACE RT : CONVENT SCHOOL SN : A building housing washing facilities and toilets. The RT : CURFEW BELL TOWER term occurs mainly in a military context.
    [Show full text]