374.A 2.6Mta炼焦煤选煤厂初步设计 毕业设计(CAD图纸联系本人).doc

论文题目2.6Mt/a炼焦煤选煤厂设计 摘 要 本设计为年处理量为260万吨矿区型炼焦煤选煤厂的初步设计。通过给定A、B两矿原煤的筛分资料、浮沉资料以及工业分析数据，确定原煤的可选性；通过选煤方法的对比，确定选煤工艺；再根据选定的工艺流程进行介质计算、数质量计算以及设备选型；最后在满足工艺要求的前提下，进行主厂房工艺布置和总平面布置。 本设计在满足精煤质量的条件下，为使精煤回收率达到最大化，对大于50mm的矸石采用动筛跳汰进行排矸，0～50mm原煤采用不脱泥无压三产品重介旋流器分选，煤泥采用浮选处理。 关键词：选煤厂，可选性，重介旋流器，浮选 Subject:Primary Design of Conking Coal Preparation Plant with Capacity of 2.6 Mt/a ABSTRACT This design is the primary design of a shaft coal preparation plant with capacity of 2.6Mt/a.By the raw coal screening data, sink and float material and proximate analysis data,we can determine the rank of raw coal washability, through the raw coal washability.Through the coal preparation method, and determine the coal preparation process..We can operate the flowsheet calculation of the dense medium technological process and quantity and quality,included equipment selection,finally,we shuld complete the main building’s technological layoutand coal plant’s general layout based on the technological requirements. In this design, under the condition of guarantee clean coal qualitative, to make the washed coal’s recovery to be maximization.As for gangue which the size over 50mm,we use vibro-assisted jigging to waste stone exhaust system,and use the non-desliming non-pressure three-product cyclone to treat the saze between 0 and 50mm. While the slime,we use flotation to separet it. Keywords: coal preparation plant，washability，dense medium cyclone，flotation 目 录前　言 1 1 文献综述 2 1.1 国内外选煤工业现状 2 1.2 国内外选煤技术现状及设备 2 1.2.1 重介选煤技术 2 1.2.2 跳汰技术 3 1.2.3 浮选技术 3 1.2.4 干法选煤技术 3 1.2.5 细粒煤脱水技术 3 1.2.6 筛分技术 4 1.2.7 自动化与在线检测 4 1.3 选煤厂建设和选煤技术、设备的发展趋势 4 1.4 关于2.5Mt/a炼焦煤选煤厂初步设计的内容及思路 4 2 概述 6 2.1 任务要求 6 2.2 设计规模及工作制度 6 2.3 产品品种及用途 6 2.4 供水、供电 6 2.4.1 水源 6 2.4.2 电源 6 3 选煤工艺 7 3.1 煤质资料分析 7 3.1.1 煤的化学性质 7 3.1.2 煤的工业分析及筛分特性 8 3.1.3 原煤可选性曲线 15 3.1.4 筛分资料分析 15 3.1.5 煤的浮沉特性 16 3.1.6 可选性分析 16 3.1.7 煤质分析小结 16 3.1.8 原煤入选方式的确定—混合与分组 17 3.1.9 选煤流程 17 3.2 选煤工艺 17 3.2.1 选煤方法的确定 17 3.2.2 跳汰分选指标计算 18 3.2.3