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自考论文范文-日处理1750吨铅锌选矿厂设计

来源:浙江自学考试专业查询平台 2020-11-19 14:10

日处理1750吨铅锌选矿厂设计

摘 要

按照毕业设计任务书的要求,进行了黄沙坪铅锌矿优先浮选1750吨/日选矿厂设计,产品为铅精矿和锌精矿。

在湖南郴州的黄沙坪铅锌矿进行了为期三周毕业实习,收集相关设计资料的基础上。确定了各车间的工作制度,对设计工艺流程进行了选择和论证,确定了设计的工艺流程,即:破碎采用三段半开路流程,磨矿采用一段闭路流程,浮选采用优先浮工艺,精矿采用先浓缩后过滤的两段脱水。

对设计工艺流程进行了工艺指标计算,包括破碎、筛分、磨矿、浮选(包括矿浆流程)和脱水流程。对破碎、筛分、磨矿、分级、浮选及脱水设备进行了选择计算和方案比较,确定了工艺所需的工艺设备。

进行了厂房总体布置,并进行了厂房内的设备配置。根据选厂房的地形条件,沿山坡地布置,其中,粗碎、中细碎、筛分厂房分开布置,粗碎、中细碎及筛分车间平行等高线配置。磨矿浮选共厂房配置,其中磨矿采用纵向配置,浮选机采用横向配置。浓缩机配置在露天,过滤机与精矿仓配置在厂房内。完成 了粗碎、中细碎、筛分、磨浮、脱水车间平断面图、数质量及矿浆流程图和设备联系图共10张。

关键词:选矿厂设计 铅锌矿 浮选 黄砂坪

Abstract

According to the request of the intruction of plant design for undergraduated, the design of Huangshaping Pb -Zn Mine concentrator with the capacity of 1750t/d, and the products are lead and zinc concentrate.

On the basis of practice in Huangshaping Pb -Zn Mine for three weeks, and the collection of data, The work institutions of each workshop were determined, and the technological process was also chosed and reasoned The process of crushing is three sections with half open circuit, the grinding process is one section with closed circuit, the floation process is selective flotation of lead minerals, and a process with two sections dewatering circiut which included concentration and filtion was adopted .

Technological parameters of crushing,screening, grinding ,floation(include the circuit of pulp)and dewatering were computed, respectively. Then the technological parameters of equipments were computed and the schemes of equipments were compared and the optimal equipments were determined.

The general arrangement of concentrator plant and the allocation of equipments in diferent workshop were presented. According to the topography of plant site, plants were arranged along the slope of mountain. The workshops of coarse crushing, middle and fine crushing and screening were aloted independent. Arrangment with parallel contour line of coarse crushing workshop、 middle and fine crushing and screening workshops were used. The workshops of grinding and flotation were put togather, and the longitudinal and lateral plans were used for the mills and flotation machines respectively. The concentrate machines were collocated seprarted from thefilitering workshop and concentrate bins which were aloted inside. 10 pieces drawing ,such as the workshop of coarse crushing, middle and fine crushing, screening , grinding , floation , dewatering and so on, were finished include a handicraft drawing.

Keywords: concentrator design, lead and zinc ores, flotation , HuangShaPing

目 录

摘 要 3

Abstract 4

第1章 绪论 5

1.1 建厂地区概况 5

1.2 选厂厂址基本特点 6

1.2.1 厂址选择 6

1.2.2 供电和供水 6

1.2.3 尾矿输送与处理 7

1.2.4 原矿和精矿产品运输 7

1.3 采矿基本情况 7

1.4 选矿设计指标和产品 7

1.5 其它情况 8

第2章 设计流程论述 9

2.1 矿床性质 9

2.2 原矿基本性质 9

2.2.1 岩矿鉴定 9

2.2.2 原矿化学分析和物相分析 10

2.2.3 原矿基本物理性质 11

2.3 流程论述 11

2.3.1 破碎流程论述 11

2.3.2 磨矿流程论述 13

2.3.3 选别流程论述 14

2.3.4 脱水流程论述 19

2.3.5 设计的工艺流程 19

第3章 车间工作制度和生产能力 21

3.1 车间工作制度 21

3.2 车间生产能力 21

第4章 工艺流程和工艺设备 22

4.1 破碎流程和破碎设备的选择与计算 22

4.1.1 破碎流程计算 22

4.1.2 破碎、筛分设备选择和计算 24

4.2 磨矿流程的计算 30

4.3 浮选流程的计算 31

4.4 矿浆流程计算 41

4.4.1 磨矿流程 41

4.4.2 选别流程 42

4.4.3 脱水流程矿浆计算 46

4.5 磨机、分级机的选择与计算 48

4.5.1 磨机的选择与计算 48

4.5.2 螺旋分级机的选择与计算 50

4.6 浮选机选择与计算 51

4.6.1 浮选机选择与计算 51

4.6.2 搅拌槽的选择与计算 59

4.7 脱水设备的选择与计算 60

4.7.1 浓缩机的选择与计算 60

4.7.2 过滤机的选择与计算 61

4.8 辅助设备的计算 62

4.8.1 矿仓 62

4.8.2 胶带机的选择与计算 64

4.8.3 其他辅助设备的选择与计算 68

第5章 总体布置与设备配置 71

5.1 厂房的总体布置 71

5.2 厂内设备配置 71

5.2.1 破碎厂房的设备配置 72

5.2.2 磨浮车间设备配置 72

5.2.3 脱水车间设备配置 72

结 语 73

参考文献 74

附一:选矿厂设备选择计算附表 75

附二:英文翻译 78

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