砂石系统生产能力的确定

1、精品砂石系统生产能力的确定一、选定工作制度根据系统性质及供料、供水、供电、设备检修等条件确定。1、月工作天数：一般为25天。2、日工作班数：2班或3班作业。3、日工作小时：由日工作班数和各部位生产情况确定。4、毛料采运时间：根据要求的开采强度，采运设备的生产能力选定。5、半成品加工时间：要求超径石处理、予筛分、粗碎、中碎的时间一*致。3班作业为1520小时；2班作业为11 14小时。6、成品筛洗时间：3班作业为20小时；2班作业为1214小时。7、人工制砂时间：要求3班24小时作业，以求产品粒度的稳定。二、系统生产能力的确定1、系统总生产能力的确定：主要根据混凝土浇筑月高峰强度、混凝 土级配、

2、各种粒径的需要量以及生产加工损耗等因素进行综合考虑确定。 按以下公式计算：Q a k k1系统总生产能力：P =（t/h）M N式中：Q 混凝土浇筑月高峰强度；（m3/月）a 每立方米混凝土所需的砂石料；（t/m 3）常取2.25 t/m 3k 日生产不均匀系数；常取1.25k1 混凝土浇筑系数；常取 1.03M 月工作天数；常取 25 天N 日工作小时数；按工作制度选定。2、系统毛料处理能力：Pm = P/ Y (t/h)t = k2 k3 k4 k5 , 1+ B (k2 k3) -1式中：P系统总生产能力；(t/h)Y成品生产率；常取0.80.9k2粉砂流失系数；1.11.3k3转运损失

3、系数；1.021.03k4冲洗损失系数；1.031.1k5级配不平衡系数；1.01.1B 毛料的含砂率。3、成品砾石(碎石)生产能力：Ps = P (1 3) ks kz (t/h)成品砂的生产能力：Pr = P *kz(t/h)式中：ks砾石加工(筛洗、转运)损耗系数；kr 砂料加工(筛洗、转运、流失)损耗系数；kZ砂石料成品储存系数；welcome确定天然砂砾石毛料开采总量Vo , 0 K实体开挖总量：V = （万m3）Ao 丫 （1-Ki） （ K2） （ K3）式中：Vo砂或砾石控制粒径的需要量；（万m3）丫 o砂或砾石控制粒径的容重；丫 一一毛料的天然容重；一般砂取1.5 t/m 3

4、,砾石取1.6t/ m 3K 一一级配变化系数；常取1.1Ao一一砂或砾石控制粒径的天然含量；Ki 一一开采损耗系数；水下开采：砂取 。.35,砾石取。.。5;水上开采：砂取。.15,砾石取。.。3;K2 运输、堆存损耗系数；常取 o.1K3一一筛分加工损耗系数；砂取 o.15,砾石取o.o3确定砂砾石料堆料场容量1、确定砂砾石料成品堆料场容量；根据混凝土高峰期最高月浇筑强度，砂料脱水温控要求确定：砂石料成品料场容积：VZ=Q H A K2/3K 1（万m3）式中：Qh 混凝土最高月浇筑强度；（万m3/月）A 1 m 3混凝土所需的砂石料；一般为1.5m 3砂石料K2 一级配变化系数；1.11

5、.5K1 活库容与总库容之比；依地形情况选择，平地o.552、确定砂砾石毛料堆场容积毛料堆场容积：Y毛=（Q1-Q2） n K （万m3）式中：Qi 毛料持续开采高峰月平均强度；（万m3/月）Q2相应的月筛分强度；（万m3/月）n 持续生产月数；K 毛料储存系数；（1.11.2）3、考虑受汛期的影响，按下式进行堆料场容积的效核计算； VS+V mVZ+ >QsBA Kz式中：Vs 汛期毛料开采量；（万m3）Vm毛料堆场储存量；（万m3）V z 成品砂石料堆场总量（活容积）；（万m3）B 每1 m 3混凝土所需的毛料量；A 每1 m 3混凝土所需的成品砂石料；Kz 一级配变化系数；1.11

6、.5Qs 汛期混凝土浇筑总量；（万m3）胶带机功率计算一、传动滚筒轴功率计算：1、传动滚筒轴功率计算： No= （N1+N2+N3） k3 k4+Z2N4（kw）式中：No传动滚筒轴功率；（kw）N1 输送 带及托辑转动部分运转功率；根据带宽B(mm)带速V（m/s）、胶带机水平长度Lh（m）查表（表1表4）N2物料水平运输功率（kw）;根据胶带机输送量Q（t/h）、胶带机水平长度Lh（m）查表（表5表7）N 3物料垂直提升功率（ kw ） ；根据胶带机输送量Q（t/h） 、物料提升高度H（m） 查表（表 8 ）E N 4卸料器及导料梢附加功率：（根据带宽B值、卸料器个数n 值、导料槽长度L

7、值查表 9 确定）（ kw ）k3 附加功率系数； （根据胶带机水平长度Lh 值和倾角（3值查表10选定）k4卸料功率系数：光面滚筒取1.16,胶面滚筒取1.11;2、电动机功率计算：电动机功率：N=K N0/刀式中：K功率备用系数，一般取1.4;N 0传动滚筒轴功率； （ kw ）刀一一总传动效率：光面滚筒取 0.88,胶面滚筒取0.9;胶带机极限倾角干砂15° 湿砂27° 湿砾石22°筛过的干砾石18°碎石和未筛过的砾石20。；精品V cm/S)L h 清洁、干燥少量尘埃、正常湿度大品尘埃、湿度大1.01.251.62.01.01.251.62.01

8、.01.251.62.0>100.060.0840.1070.1340.100.1250.160.200.1340.1680.2140.268200.130.1680.2140.2680.200.2500.320.400.2680.3360.4280.536300.200.2510.3220.4020.300.3750.480.600.4020.5040.6420.804400.260.3350.4290.5360.400.500.640.800.5360.6720.8561.072500.330.4190.5360.6700.500.6250.801.000.6700.841.0701

9、.34600.400.5030.6430.8040.600.750.961.200.8041.0081.2841.608700.460.5860.7510.9380.700.8751.121.400.9381.1761.4981.8876800.530.6700.8581.0620.801.001.281.601.0621.3441.7122.144900.600.7540.9651.2060.901.1251.441.801.2061.5121.9262.412表1(kw)B=500mm 转动部分运转功率 N i值表welcomeV cm/S)L h 清洁、干燥少量尘埃、正常湿度大品尘埃、湿

10、度大1.01.251.62.01.01.251.62.01.01.251.62.0>100.080.1030.1310.1640.1240.1550.1980.2480.1650.2060.2640.330200.160.2050.2620.3280.2480.3100.3970.4960.3300.4130.5280.660300.240.3080.3940.4920.3720.4650.5950.7440.4950.6190.7920.990400.320.4100.5250.6560.4960.6200.7940.9920.6600.8251.0561.32500.410.5130

11、.6560.8200.6200.7750.9921.2400.8251.0311.3201.65600.490.6150.7870.9840.7440.9301.1901.4880.9901.2381.5841.98700.570.7180.9181.1480.8681.0851.3891.7361.1551.4441.8482.31800.650.8201.0501.3120.9921.241.5871.9841.3201.6502.1122.64900.730.9231.1811.4761.1161.3951.7862.2321.4851.8562.3762.97表2(kw)B=650mm

12、 转动部分运转功率 N i值表welcomeV cm/S)L h 清洁、干燥少量尘埃、正常湿度大品尘埃、湿度大1.01.251.62.01.01.251.62.01.01.251.62.0>100.110.1380.1760.220.1650.2060.2640.330.220.2750.3520.44200.220.2750.3520.440.3300.4130.5280.660.440.5500.7040.88300.330.4130.5280.660.4950.6190.7920.990.660.8251.0561.32400.440.5500.7040.880.6600.8251

13、.0561.320.881.1001.4081.76500.550.6880.8801.100.8251.0311.3201.651.101.3751.7602.20600.660.8251.0561.320.9901.2381.5841.981.321.6502.1122.64700.770.9631.2321.541.1551.4441.8482.311.541.9252.4643.08800.881.1001.4081.761.3201.6502.1122.641.762.2002.8163.52900.991.2381.5841.981.4851.8562.3762.971.982.4

14、753.1683.96表3(kw)B=800mm 转动部分运转功率 N i值表welcomeV om/S)L h 清洁、干燥少量尘埃、正常湿度大品尘埃、湿度大1.01.251.62.01.01.251.62.01.01.251.62.0100.150.1910.2450.3060.2290.2860.3660.4580.3060.3830.4900.612200.300.3830.4900.6120.4580.5730.7330.9160.6120.7650.9801.224300.450.5740.7340.9180.6870.8591.0991.3740.9181.1481.4691.83

15、6400.610.7650.9801.2240.9161.1451.4661.8321.2241.5301.9582.448500.760.9561.2241.5301.1451.4311.8322.2901.531.9132.4483.060600.911.1481.4691.8361.3741.7182.1982.7481.8362.2952.9383.672701.071.3391.7142.1421.6032.0042.5653.2062.1422.6783.4274.284801.221.5301.9582.4481.8322.2902.9313.6622.4483.0603.917

16、4.896901.371.7212.2032.7542.0612.5763.304.1222.7543.4434.4065.508表4(kw)B=1000mm 转动部分运转功率 N i值表welcome102030405060708090100(t/h)100.005450.01090.01640.0220.02750.03270.03820.04360.04910.0545200.01090.02180.0330.0440.05450.06540.07630.08720.09810.109300.016350.03270.04910.0660.08180.09810.11450.13080.

17、14720.1635400.02180.04360.0660.0880.1090.13080.15260.17440.19620.218500.027250.05450.0820.1090.13630.16350.19080.21800.24530.2725600.03270.06540.09810.1310.16350.19620.22890.26160.29430.327700.038150.07630.1150.1530.19080.22890.26710.30520.34340.3815800.04360.08720.1310.1750.2180.26160.30520.34880.3

18、9240.436900.049050.09810.14720.1970.24530.29430.34340.39240.44150.4905表5(kw)清洁、干燥条件下物料水平运输功率N2值表welcome102030405060708090100(t/h) , 八100.00820.01640.02450.03270.04090.04910.05720.06540.07360.0817200.01640.03270.04910.06540.08170.09810.11440.13080.14700.1634300.02450.04910.07360.09810.12260.14810.171

19、60.19610.22060.2451400.03270.06540.09810.13080.16340.19610.22880.26150.29420.3268500.04090.08170.12260.16340.20430.24510.2860.32680.36770.4085600.04910.09810.14710.19610.24510.29420.34320.39220.44120.4902700.05720.11440.17160.22880.2860.34320.40040.45760.51470.5719800.06540.13080.19610.26150.32680.3

20、9220.45760.52290.58830.6536900.07360.14710.22060.29420.36770.44120.51470.58830.66180.7353表6(kw)少量尘埃、正常湿度条件下物料水平运输功率N 2值表welcome102030405060708090100(t/h) , 八100.01090.02180.03270.04360.05450.06540.07630.08720.09810.1089200.02180.04260.06540.08710.10890.13070.15250.17430.19610.2178300.03270.06540.098

21、10.13070.16340.19610.22870.26140.29410.3267400.04360.08720.13070.17430.21780.26140.30500.34850.39210.4356500.05450.10890.16340.21780.27230.32670.38120.43560.49010.5445600.06540.13070.19610.26140.32670.39210.45740.52280.58810.6534700.07630.15250.22870.30500.38120.45740.53370.6100.68610.7623800.08720.

22、17430.26140.34850.43560.52280.60990.69700.78410.8712900.09810.19610.29410.39210.49010.58810.68610.78410.88210.9801表7(kw)大量尘埃、湿度大条件下物料水平运输功率N 2值表welcome102030405060708090100Q 10.02730.05460.08190.10920.13650.16380.19110.21840.24570.27320.05460.10920.16380.21840.27300.32760.38220.43680.49140.54630.081

23、90.16380.24570.32760.40950.49140.57330.65520.73710.81940.10920.21840.32760.43680.5460.65520.76440.87360.98281.09250.13650.2730.40950.5460.68250.8190.95551.0921.22851.36560.16380.32760.49140.65520.8190.98281.14661.31041.47421.63870.19110.38220.57330.76440.95551.14661.33771.52881.71991.91180.21840.436

24、80.65520.87361.0921.31041.52881.74721.96562.18490.24570.49140.73710.98281.22851.47421.71991.96562.21132.457物料垂直提升运输功率N 3值表表 8(kw)welcome精品带宽B (mm )500650800100012001400EN4(1<A/ 、卸料器0.3n0.4n0.5n1.0n导料梢0.08L0.08L0.09L0.1L0.12L0.18L表 9 (kw)卸料器及导料槽附加功率汇N 4值表附加功率系数k3值表表10""'"'"''-Lm15304560100150200300qnnB 00'2.82.11.