Tugas Pbg 2 Aditya Hendra w 12212007
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Transcript of Tugas Pbg 2 Aditya Hendra w 12212007
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TUGAS
PENGOLAHAN BAHAN GALIAN
"SIEVE ANALYSIS"
Oleh :
Aditya Hendra Wijaya
122.12.007
JURUSAN EKSPLORASI TAMBANG
FAKULTAS TEKNIK DAN DESAIN
INSTITUT TEKNOLOGI DAN SAINS BANDUNG
BEKASI
2014
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SOAL :
Sebanyak 500 gram pasir silika (SiO2) dilakukan analisa ayak (Sieve Analysis). Mineral silika (SiO2) diayak
dengan ayakan Tyler selama 10 menit. Tugas :
1. Isilah tabel distribusi ukuran (Sieve Analysis) dari proses ayakan tersebut!
2. Gambarkan Grafik Sieve Analysis (Grain Size Distribution dari pasir silika (SiO2)!
JAWAB :
1.
Ayakan Tyler (Mesh)
Diameter (mm)
Berat Ayakan (g)
Berat Ayakan + Bahan (g)
Berat bahan (g)
% Tertinggal
% Lolos
4 4.75 101.62 151.22 49.6 9.92% 90.08%
10 2 99.27 135.77 36.5 7.30% 82.78%
20 0.85 99.58 141.68 42.1 8.42% 74.36%
40 0.425 97.58 138.08 40.5 8.10% 66.26%
60 0.25 98.96 121.96 23 4.60% 61.66%
140 0.106 98.15 189.65 91.5 18.30% 43.36%
200 0.075 97.98 108.18 10.2 2.04% 41.32%
Pan - 70.8 275.8 205 41.00% 0.32%
#4 Berat Masuk = 500 gram
% Tertinggal =49,6
100% 9,92%500
x
% Lolos =100% 9,92% 90,08%
#10 Berat Masuk =500 49,6 450,4 gram
% Tertinggal =36,5
100% 7,30%500
x
% Lolos =90,08% 7,30% 82,78%
#20 Berat Masuk =450,4 36,5 413,9 gram
% Tertinggal =42,1
100% 8,42%500
x
% Lolos =82,78% 8,42% 74,36%
#40 Berat Masuk = 413,9 42,1 = 371,8 gram
% Tertinggal =40,5
100%500
8.10%x
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% Lolos =74,36% 8,10% 66,26%
#60 Berat Masuk = 371,8 40,5 = 331,3 gram
% Tertinggal =23
100% 4,60%500
x
% Lolos =66,26% 4,60% 61,66%
#140 Berat Masuk = 331,3 23 = 308,3 gram
% Tertinggal =91,5
100% 18,30%500
x
% Lolos =61,66% 18,30% 43,36%
#200 Berat Masuk = 308,3 91,5 = 216,8 gram
% Tertinggal =10,2
100% 2,04%500
x
% Lolos =43,36% 2,04% 41,32%
#Pan Berat Masuk = 216,8 10,2 = 206,6 gram
% Tertinggal =205
100% 41%500
x
% Lolos =41,32% 41% 0,32%
2.
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40.00%
45.00%
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4 10 20 40 60 140 200 Pan
% L
olo
s
Grafik Sieve Analisis (SiO2)
% Lolos
% Tertinggal
%Te
rtin
ggal