Browsing Research Publications by Year "1984"

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  • Analytical solutions to the moment transport equations--i : One-group one-region slab and sphere criticality 
    Lee, CE; Dias, MP [Article-Full-text]
    Analytical PN and AN moment criticality solutions are obtained for uniform infinite slabs and finite spheres using Mark, Marshak and importance-weighted vacuum boundary conditions. Comparison with 'exact' criticality ...
  • An assessment of aluminosilicate refractories from in-situ deposits 
    Fernando, WLW [Conference-Full-text]
    It is possible to predict the behaviour of Aluminosilicates prior to its use in iron and steel practice. The methods adopted by the author comprise extraction of the material from bore holes, bcneficiation and fabrication ...
  • Computers in mining industry 
    Senaratne, CPJ [Conference-Full-text]
    With the advances made in Computer Technology during the recent years, computers have come into use extensively in mining operations. Companies have specially developed minerals industry software which offer mining ...
  • The effect of feed concentration on the performance of hydrocyclones 
    Marasinghe, BS [Conference-Full-text]
    Hydrocyclones have found wide application in many areas such as solid/liquid separation, powder classification and purification of minerals. The effect of solids concentration on separation performance of hydrocyclone ...
  • Gem industry & its development 
    Perera, DC [Conference-Full-text]
    Sri Lanka is endowed with a galaxy of Gem minerals. This great opportunity provided by natural processes should be harnessed to the maximum to bring much needed foreign exchange to Sri Lanka while generating job ...
  • Improvement of brightness of Sri Lankan china clay 
    Dharmaratne, PGR; Marasinghe, BS; Perera, GP [Conference-Full-text]
    China clay is widely used in many industries such as ceramics, paper, paints, plastics and rubber. As most of these industries require clay having high brightness, a number of techniques have been developed to achieve ...
  • Mathematical modelling of mineral processing operations 
    Subasinghe, GKNS [Conference-Full-text]
    During the last few decades, efforts have been made to describe the various unit operations involved in mineral processing by mathematical models. These models are of great importance in the design of new equipment and ...
  • Mineral resource assessment and long term supply of minerals 
    Jayawardena, DE de S [Conference-Full-text]
    Mineral Resource Assessment means the estimation of a nation’s mineral resources and their classification into appropriate categories. The term resources is used to refer to quantities of foreseeable economic interest ...
  • Mining of Graphite in Sri Lanka 
    Gregory, N [Conference-Full-text]
    The first mention of the presence of graphite in Sri Lanka dates back to 1675. The industry grew mainly during the 19th century and it peaked in ! 899 with a production of 31,761 mt coming from about 3,000 pits. The ...
  • The present trends in the gem industry 
    Hettiarachchi, L [Conference-Full-text]
    Gem Industry cannot be studied in isolation. It has to be studied along with the Diamond Industry in particular and Jewellery industry. With the Jewellery Indus-. try coming into the scene, and with precious metals ...
  • Processing of gem minerals 
    Jayasinghe, S [Conference-Full-text]
    The processing of Gem Minerals includes identification, selection for variety and grading for quality, size and use etc. It also includes identification of rare stones, identification and selection of stones which need ...
  • A routing technique for estimating ground–water recharge 
    Senarath, DCH; Rushton, KR [Article-Full-text]
    A technique is presented for the estimation of ground–water recharge in a region where the formations overlying an aquifer cannot transmit all of the available water to the aquifer. The method is based on a routing model ...
  • A study of pinched sluice concentrator 
    Jeyadevan, B [Conference-Full-text]
    The pinched sluice concentrator is a device for the separation of heavy minerals particularly beach sands. They come in a variety of sizes and shapes and have been used extensively overseas in the beach sand industry for ...
  • Surveying for marine minerals 
    Wijesinghe, NS [Conference-Full-text]
    A survey chart or plan is only as useful as it may be used to accurately locate places, objects oi interest etc. Land survey plans can be prepared accurately and can be used as a guide to the user. There are many types ...
  • Symposium on mineral resources of Sri Lanka and its developments (Pre Text) 
    Unknown author [Conference-Full-text]
  • Up-grading of Sri Lankan ilrnenite 
    Ismail, MGMU; Amarasekera, J; Kumarasinghe, JSN [Conference-Abstract]
    Ilrnenite, rutile and leucoxene are the only naturally-occurring titanium bearing minerals that have been seriously considered as suitable feed stock for either the metal producing or pigment industries. The existence ...