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本文叙述了浓密排放法的基本原理,介绍了增浓尾矿的基本方法,模拟实际堆坝条件确定了E厂尾矿的不分选浓度,并测定了沉积坡坡度及堆积体不同部位的粒度组成和其他主要物理力学性质以及加石灰、絮凝剂后,对堆积体各种性能的影响。探讨了尾矿浓密后的沉积、固结、渗透和流变特性及水力输送等方面的基本规律,阐述了将尾矿浓密、浓矿浆水力输送、堆坝等一系列措施用于E厂以解决老尾矿池因渗漏而影响厂区安全的技术可能性和经济合理性,为设计提供了依据。试验表明,浓密尾矿输送和堆坝在节能、节省投资、减少占地和保护环境方面都具有特殊的优点,是铀尾矿处置的一种新的值得重视的方法。
This paper describes the basic principle of dense emission method, introduces the basic methods of increasing tailings, simulates the actual conditions of dam-dumping to determine the unscreened concentration of tailings in E plant, and measures the slope of sedimentary slope and the particle size of different parts of the deposit Composition and other major physical and mechanical properties as well as the addition of lime, flocculant, on the various performance of the deposit. The basic rules of sedimentation, consolidation, infiltration and rheological properties and hydraulic transportation are discussed. A series of measures such as thick tailings, hydraulic conveying of thick pulp and dam heap are discussed in E plant The technical possibility and economic rationality of the old tailings pond that affect the plant safety due to seepage have provided the basis for the design. The test shows that the dense tailings conveying and dam heap have the special advantages in energy conservation, investment saving, land occupation reduction and environment protection, and are a new and worthy method for disposal of uranium tailings.