Abstract
Research on preliminary concept of ship intended for mining poly-metallic concretions from sea bed Necessity to design and build a ship for winning Fe-Mn concretions from sea bed, and put it into operation, results mainly from decreasing land resources of mineral rough materials and increasing prices of metals. Main dimensions and parameters of such mining ship were determined by elaborating its main design assumptions and making use of suitable data on drilling ships considered similar from the point of view of attributed functions and spatial arrangement. In this paper a design study on preliminary concept of dimensions and spatial arrangement of a ship for winning poly-metallic concretions from sea bed, is presented. The study has been aimed at elaboration of an appropriate mathematical model to be applied for optimization of ship's winning system.
Highlights
Sea-bed concretions are poly-metallic minerals which can be found in deep water regions of seas and oceans
Fe-Mn concretions have not been so far mined on industrial scale firstly because of lack of legal regulations dealing with sea and ocean bed areas outside state jurisdiction zones, secondly because of high investment costs associated with mining process and thirdly because of lack of a feasible industrial technology for winning the concretions from ocean bed
Design of mining ship should be realized with a view of its effectiveness which consists a.o. in minimization of down - time interval as well as minimization of unit winning cost
Summary
Sea-bed concretions are poly-metallic minerals which can be found in deep water regions of seas and oceans. To elaborate the mining ship design concept the following main design parameters were formulated : the yearly rate of winning the wet concretions, QMK the time interval of storing the concretions in mining ship holds TSK (the ship’s load capacity PŁ will result from both the above given parameters, TSK and QMK) the average concentration per unit area of the concretions in sea bed deposit the water depth from which the concretions have to be won the maximum design sea conditions in which the winning process has to be continued.
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