流程如图3， Q=100（t/h） ?7=1.48% 1.计算必要而充分的原始指标数
NP=C（np-ap）=2×（8-4）=8
2.按工业试验结果与现厂生产指标分析，先用的8个指标如下：
?16=24.25% ?14=12.26% ?11=8.45% ?18=4.24%
???=92.00% E16=95.00% E14=90.00% E11=85.00% 3. 列平衡方程计算各产物产率、各产物的回收率和未知产物的品位
r16=ε16*β7*r7/β16=92.00%×1.48%×100.00%/24.25%=5.61% r19=r7-r16=100.00%-5.61%=94.39% ε19=1-ε16=1-92.00%=8.00%
β19=ε19*β7*r7/r19=8.00%×1.48%×100.00%/94.39%=0.13% r14=β16*r16/(β14*E16)
= 24.25%×5.61%/(12.26%×95.00%)=11.69%
ε14=r14*β14/(r7*β7)= 11.69%×12.26%/(100.00%×1.48%)=96.84% r17=r14-r16=11.69%-5.61%=6.08% ε17=ε14-ε16=96.84%-92.00%=4.84%
β17=ε17*β7*r7/r17=4.84%×1.48%×100.00%/6.08%=1.18% r11= (r14*β14/E14-β17*r17)/ β11=(11.69%×12.26%/90.00%-1.18%×6.08%)/8.45%=18.00%
ε11=r11*β11/(r7*β7)= 18.00%×8.45%/(100.00%*1.48%)=102.76% r13=r11+r17=18.00%+6.08%=24.07% ε13=ε11+ε17=102.76%+4.84%=107.60%
β13=ε13*β7*r7/r13=107.60%×1.48%×100.00%/24.07%=6.62% r15=r13-r14=24.07%-11.69%=12.38%
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ε15=ε13-ε14=107.60%-96.84%=10.76%
β15=ε15*β7*r7/r15=10.76%×1.48%×100.00%/12.38%=1.29% r18=(r11*β11*(1-E11)/E11-r19*β19)/ β18=(18.00%×8.45%×(1-85.00%)/85.00%-94.39%×0.13%)/4.24%=3.54%
ε18=r18*β18/(β7*r7)= 3.54%×4.24%/(1.48%×100.00%)=10.13% ε12= (r18*β18+ r19*β19)/ (β7*r7)= (3.54%×4.24%+94.39%×0.13%)/(1.48%×100.00%)=18.13% ε10=ε11+ε12=102.76%+18.13%=120.89% ε20=ε10-ε7=120.89%-100.00%=20.89% r20=r15+r18=12.38%+3.54%=15.92%
β20=β7*r7*ε20/r20=1.48%×100.00%×20.89%/15.92%=1.94% r10=r7+r20=100.00%+15.92%=115.92%
β10=β7*r7*ε10/r10=1.48%×100.00%×120.89%/115.92%=1.54% r12=r10-r11=115.92%-18.00%=97.92%
β12=β7*r7*ε12/r12=1.48%×100.00%×18.13%/97.92%=0.27%
7 10 11 12 13 14 15 16 17 18 19 20
r 100.00% 115.92% 18.00% 97.92% 24.07% 11.69% 12.38% 5.61% 6.08% 3.54% 94.39% 15.92% 浮选流程计算结果表 β ε q 1.48% 100.00% 1.54% 120.89% 8.45% 102.76% 0.27% 18.13% 6.62% 107.60% 12.26% 96.84% 1.29% 10.76% 24.25% 92.00% 1.18% 4.84% 4.24% 10.13% 0.13% 8.00% 1.94% 20.89% 32
E 100.00 115.92 18.00 97.92 24.07 11.69 12.38 5.61 6.08 3.54 94.39 15.92 85.00% 90.00% 95.00%
4.2 矿浆流程的计算
1)按公式Rn?1?1计算固液比Rn值 KnR1=1/K1-1=1/96.00%-1=0.042 R4=1/K4-1=1/28.00%-1=2.57 R5=1/K5-1=1/80.00%-1=0.25 R7=1/K7-1=1/23.20%-1=3.31 R8=1/K8-1=1/78.00%-1=0.28 RⅠ=1/KⅠ-1=1/78.00%-1=0.28 RⅣ=1/KⅣ-1=1/75.00%-1=0.33 RⅤ=1/KⅤ-1=1/22.08%-1=3.53 RⅥ=1/KⅥ-1=1/20.81%-1=3.81 R11=1/K11-1=1/25.00%-1=3.00 RⅦ=1/KⅦ-1=1/21.62%-1=3.63 RⅧ=1/KⅧ-1=1/20.00%-1=4.00 R18=1/K18-1=1/24.00%-1=3.17 R14=1/K14-1=1/32.00%-1=2.13 R16=1/K16-1=1/38.00%-1=1.63
2)按公式Wn=QnRn和平衡方程计算各作业、各产物水量Wn值
w1=q1*R1=100.00×0.042=4.2t/h w4=q4*R4=100.00×2.57=257.00t/h w5=q5*R5=350.00×0.25=87.50 t/h w7=q7*R7=100.00×3.31=331.03 t/h
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w8=q8*R8=199.98×0.28=56.00 t/h wⅠ=qⅠ*RⅠ=450.00×0.28=126.00 t/h wⅣ=qⅣ*RⅣ=199.98×0.33=65.99 t/h w2 =w1 + w5 =4.2+87.50=91.70 t/h w6 =w4 + wⅣ =257.14+65.99=323.13 t/h wⅡ =w4 + w5 =257.00+87.50=344.50t/h wⅢ =w7 + w8 =331.03+56.00=387.03t/h w3=wⅠ=126.00 t/h
w8=q8*R8=199.98×0.28=55.97 t/h w9= wⅣ=65.99 t/h
wⅤ=qⅤ*RⅤ=115.92×3.53=409.08 w11=q11*R11=18.00×3.00=53.99 w12 =wⅤ – w11 =409.08-53.99=355.09 wⅥ=qⅥ*RⅥ=24.07×3.81=91.61 wⅦ=qⅦ*RⅦ=97.92×3.63=355.00 w18=q18*R18=3.54×3.17=11.20 w14=q14*R14=11.69×2.13=24.84 wⅧ=qⅧ*RⅧ=11.69×4.00=46.76 w16=q16*R16=5.61×1.63=9.16 w17=wⅧ– w16 =46.76-9.16=37.60 w13=w11+ w17 =53.99+37.60=91.60 w15=wⅥ-w14 =91.61-24.84=66.77
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w19=wⅦ-w18 =355.00-11.20=343.80 w20=w15+w18 =66.77+11.20=77.97 w10=w20+w7 =77.97+331.03=409.00 3) 按平衡方程计算各作业补加水量Ln值 LⅠ=wⅠ–w2 =126.00-91.70=34.3
LⅡ=w4+w5–w3 =257.14+87.50-126.00=218.64 LⅢ=w7+w8–w6 =331.03+55.97-323.13=63.87 LⅣ=wⅣ–w8 =65.99-56.00=9.99 LⅤ=wⅤ-w10=409.08-409.00=0.08 LⅥ=wⅥ-w13=91.61-91.60=0.01 LⅦ=wⅦ-w12=355.00-355.09=0.00 LⅧ=wⅧ-w14=46.76-24.84=21.92
4) 按公式Vn?Qn(Rn?)计算各作业和各产物的体积Vn值
?1V1=w1+q1/ρ=4.2+100.00/3=37.53 V2=w2+q2/ρ=91.70+450.00/3=241.7 V4=w4+q4/ρ=257.14+100.00/3=290.47 V5=w5+q5/ρ=87.50+350.00/3=204.17 V6=w6+q6/ρ=323.13+299.98/3=423.12 V10=w10+q10/ρ=409.00+115.92/3=447.64 V11=w11+q11/ρ=53.99+18.00/3=59.99 V12=w12+q12/ρ=355.09+97.92/3=387.73 V14=w14+q14/ρ=24.84+11.69/3=28.74
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