Due to the different nature of the ore processed by each mine and the different processes used, the calculation methods and formulas used in the process calculation are also different. β 1 - β 2 The grade of the target mineral (metal) in each product is as follows: Production  Object Product             Bit A B original     mine a b A  fine  mine a 1 b 1 A  tail  mine a 2 b 2 B  fine  mine a 3 b 3 tail     mine a 4 b 4 Formula for calculating product recovery and yield: The grade of the target mineral (metal) in each product is as follows: Production  Object Product       Bit A B original     mine a b tail     mine a 1 b 1 Mixed concentrate a 2 b 2 A  fine  mine a 3 b 3 B  fine  mine a 4 b 4 Formula for calculating product recovery and yield: As shown above, in the scheme, β 1 , β 2 , β 3 , β 4 , γ 1 , γ 2 are known, and γ 3 , γ 4 and ε 3 , ε 4 are calculated. Derrick FLC2000 PWP Shaker Screen
Derrick FLC2000 PWP Shaker screen
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First, the calculation of the single metal process 
Yield: γ 2 = ————
β 2 - β 3
β 2 (β 1 - β 3 )
Recovery rate: ε 2 = ——————
β 1 (β 2 - β 3 )
ε 3 = ε 1 - ε 2
For amalgamation gold mining operation in the sorting process and direct extraction of the finished gold reselection operation, as compared with the concentrate grade grade tailings vary greatly, and concentrate grade grade tailings case negligible compared , then β 2 -β 3 =β 2
β 2 (β 1 - β 3 ) β 2 (β 1 - β 3 ) β 3
ε ε 2 = ——————100% = ——————100% = 1 - —— 100%
β 1 (β 2 - β 3 ) β 1 · β 2 β 1
β 1 - β 3
γ 2 = ———— = 0
β 2 - β 3
γ γ 3 = γ 1
The recovery rate and yield are calculated almost entirely in the domestic heap leaching plant. [next]
Second, the calculation of the two genus processes 1. The calculation of the first process
α 1 ( α - α 2 )
ε A = ———————
α( α 1 - α 2 )
b 3 (b 1 - b)(b 2 - b 4 )
ε b = ————————————
b(b 1 - b 2 )(b 3 - b 4 )
- - α 2
γ A = —————
1 1 - α 2
(b 1 - b)(b 2 - b 4 )
γ B = —————————
(b 1 - b 2 )(b 3 - b 4 )[next]
2. Calculation of the second process
α 3 ( α 1 - α )( α 2 - α 4 )
ε A = ————————————
α( α 1 - α 2 )( α 2 - α 4 )
b 4 (b 1 - b)(b 2 - b 3 )
ε b = ————————————
b(b 1 - b 2 )(b 4 - b 3 )
(α 1 - α)( α 2 - α 4 )
γ A = —————————
(α 1 - α 2 )( α 2 - α 4 )[next]
(b 1 - b)(b 2 - b 3 )
γ B = ———————————
(b 1 - b 2 )(b 4 - b 3 )
ε and γ in the above formulas respectively represent the respective recoveries and yields in the respective products; a and b respectively represent the grades of two different metals in each product.
Third, the calculation of the single metal three product process For the single metal three product process, in the calculation of the calculation, in addition to the known product grade, you must also know two of the yield, in order to calculate other yields and recovery of each product . Therefore, after calculating the necessary and sufficient raw data before the process is examined, this must be noted when assigning the sampling points. Of course, in the calculation of the closed-circuit process, the relevant indicators before and after the operation of the three products have been obtained, and should also be used as the original indicators for calculating the three product processes.
Yield:
 γ 1 β 1 -  γ 2 β 2
———————— - β 4
γ 1 - γ 2
γ 3 = ———————————
β 3 - β 4
γ 4 =  γ 1 - γ 2 - γ 3
γ 1 β 1 -  γ 2 β 2
β 3 (—————— - β 4 )
                                                                                              γ 1 - γ 2
ε 3 = ———————————
β 1 (β 3 - β 4 )
γ 3 β 3
Or ε 3 = ———
γ 1 β 1
ε 4 = ε 1 - ε 2 - ε 3 = γ 1 β 1 - γ 2 - β 2 - γ 3 β 3
The above symbols such as γ, β, and ε have the same meaning.
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