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摘 要
根據(jù)對河北省唐山市馬蘭莊鐵礦礦石性質(zhì)的研究結(jié)果以及對類似選廠的考察，設(shè)計馬蘭莊鐵礦選礦廠。該設(shè)計為一次建廠，建廠規(guī)模為年處理量60萬噸原礦石，根據(jù)地形考察報告設(shè)計為依山坡建廠，破碎位于同一等高線，主廠房依山坡地勢而建。礦石為中等硬度，原礦最大粒度為500mm，含水量為2%，含泥量小于1%。采礦廢石混入10%。密度3.26噸/立方米，松散度1.5。采用三段一閉路破碎流程。為了達到更好的選礦效果，采用階段磨礦階段選別的流程。原礦品位30%，經(jīng)過四次磁選后精礦品位可達到66%，回收率為85%，產(chǎn)率為38.64%?？偼顿Y為3430.76萬元，預(yù)計投資回收期為0.22年。
關(guān)鍵詞：馬蘭莊鐵礦，磨礦，磁選
Abstract
According to the inspection of Malanzhuang iron ore in Tangshan, Hebei Province, nd the nature of the findings of similar election plant inspection, design Malanzhuang iron ore concentrator. The design for a construction, construction of the largest of the handling capacity of 600,000 tons of ore, according to topography inspection report is designed to build factories on the slope, broken in the same contour, the main plant built by a mountain slope potential. Ore for the middle hardness, the largest ore for the size 500 mm, the water content of 3 percent, with mud in less than one percent. Mining waste rock mixed with 10 percent. Density of 3.26 t / cubic meters, 1.5 degrees loose. Using a three-house broken processes. In order to achieve better results processing, grinding stage by stage another election process. Ore grade of 30 percent, after four magnetic separation concentrate grade can be achieved after the 66 percent response rate was 85 percent, the yield was 38.64 percent. This design is expected to total investment of about 38.3533 million yuan, the payback period is 1.12 years.
Keyword: The iron ore of Malanzhuang , Grinding, Magnetic, Process, The building of factories
目錄
摘 要 I
Abstract II
1 引言 1
2 礦石性質(zhì)的分析 2
3 選礦工藝流程的選擇與計算及工作制度生產(chǎn)能力的確定 3
3.1確定工作制度 3
3.2破碎篩分流程的選擇與計算 3
3.2.1計算破碎車間生產(chǎn)能力 3
3.2.2計算總破碎比及分配各段破碎比 3
3.2.3計算各段產(chǎn)物的最大粒度 4
3.2.4計算各段破碎機的排礦口寬度 4
3.2.5確定篩子的篩孔尺寸和篩分效率 5
3.2.6計算各段產(chǎn)物的礦量和產(chǎn)率 5
3.2.7破碎篩分設(shè)備的選擇與計算 5
3.2.7.1粗碎設(shè)備 5
3.2.7.2中碎設(shè)備 8
3.2.7.3細碎預(yù)先及檢查篩分設(shè)備 9
3.2.7.4細碎設(shè)備 11
3.3磨礦選別流程的選擇計算 13
3.3.1數(shù)質(zhì)量流程計算 13
3.3.1.1磁滑輪的計算 15
3.3.1.2計算第一段磨礦的礦量、產(chǎn)率 15
3.3.1.3選別流程的計算 15
3.3.2礦漿流程的計算 20
3.4磨礦選別主要設(shè)備的選擇計算 26
3.4.1磁滑輪的選擇與計算 26
3.4.2一段磨礦設(shè)備的選擇計算 26
3.4.3分級機的選擇計算 28
3.4.4二段磨礦設(shè)備的選擇計算 29
3.4.5細篩的選擇計算 30
3.4.6磁選設(shè)備的選擇 31
4 主要輔助設(shè)備的選擇與計算 32
4.1原礦倉的選擇計算 32
4.2原礦倉下給礦機的選擇計算 33
4.3粉礦倉的選擇計算 33
4.4粉礦倉下給礦機的選擇 34
4.5起重設(shè)備的選擇計算 34
4.6過濾機的選擇計算 34
4.7真空泵的選擇 35
4.8砂泵的選擇 35
4.9膠帶運輸機的選擇與計算 35
5 生產(chǎn)過程概述 36
6 選礦廠廠址選擇和設(shè)備配置 38
6.1選礦廠廠址的選擇 38
6.2選礦廠車間布置和設(shè)備配置的特點 38
7 礦山環(huán)保與安全 39
7.1環(huán)境保護 39
7.2安全 39
8 選礦廠勞動崗位定員 40
9 選礦廠的技術(shù)經(jīng)濟分析 41
9.1選廠工藝投資概算 41
9.1.1設(shè)備概算價值 41
9.1.2工藝金屬結(jié)構(gòu)概算價值 42
9.1.3工藝管道概算價值 42
9.2選礦廠基建投資概算 43
9.2.1廠各部門投資 43
9.3選礦技術(shù)經(jīng)濟指標計算 43
9.3.1精礦設(shè)計成本的計算 43
9.3.2選礦加工費的計算 44
9.4經(jīng)濟效果評定 44
9.4.1選礦加工費的計算 44
9.4.2銷售利潤 45
9.4.3經(jīng)濟分析（靜態(tài)法） 45
10 結(jié)論 47
10.1結(jié)論 47
參考文獻 48
謝辭 49
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