# 4.5.2. Mining of mathematical model of leaching

By results of skilled data sample on levels of values of private functions Yb Y2, Y3, Y4, Y5 accordingly from factors H Х2, Х3, Hd is made, H \$ average value of functions is defined, dot profiles cha - stnyh functions and their curves aproksimatsii (fig.
19) are constructed. In tab. 46 are resulted empericheskie the formulas which have been picked up for opi - sanija dot data and value of private functions of extraction of molybdenum in the productive solution, calculated on them. About close conformity it is scarlet - gebraicheskih dependences to dot profiles testifies neznachi - telnoe difference of average settlement values of all functions from the general environments - it equal 81,84. Table 45 Settlement values of private functions of extraction of molybdenum In a productive solution 1 2 3 4 5 compare At, =-48,48/H1+76,74229+0,24143H; 74,31 79,15 82,37 85,19 87,84 181,77 У2 = Х2 / (0,0018+0,0115Х2) 75,41 і 80,81 82,78 83,80 84,43 81,45 Уг=33,192/Х, +70,11-Ю, 29Х3 76,34 78,43! 81,43 84,67 87,99 81,77 At * = 0,0669H4-79,16 80,50 181,17 81,83 82,51 83,17 81,84 81,84 У5 = 0,903Х5 - 0.337 78,22 1 80,03 і 81,84 83,64 85,45 The importance of the received functions it is established, using koeffitsi - entom nonlinear plural correlation R and its importance tR, races - schitannym under formulas 4.1 and 4.2 accordingly. Results of calculations are resulted in tab. 46. As a result of definition of factor of correlation R and it it is significant - sti tR for private functions it is established, that function Y4 (dependence on temperature) neznachima, i.e. Change of temperature of solvent not an eye - zyvaet essential influence on extraction okislennoju molybdenum n about - duktivnyj a solution. For the description of multifactorial dependences the formula (3.1) is used. In our case taking into account insignificance of function \and the equation connecting change of extraction of molybdenum in a productive solution with studied factors, will look like: Yn =-LVJL (4.7) Substituting in the equation (4.7) values of private functions, we receive: (-48,48 X. + 76,74229-t - 0,24143Х.) {Х1 / (0,0018-g 0,011 SX,) 8Ш ' (ZZD «/LG2 + 70fll + 0e29AP,) - (0,903Jr4-0,337)" ' (4.8) The error of the equation calculated but the formula (4.5), has made 6,82 %, That svidetelstvueg about adequacy of the received equation. Proceeding from real conditions of process of leaching and on the basis of private functions, the optimum mode of leaching is established: - Concentration of sulfuric acid - 40 g/l; - Duration of leaching - 48 hours; - Relation Т:Ж - 1:3; - krupnost a material of 93 % kl.-0,074 mm. Without taking into account темпераіурноїт) the factor propjuziruemoe extraction it is oxidised - nogo molybdenum in a productive solution in optimum conditions will make: % _ Yx? Y2 • Y3 • Y5 _ 85,19 • 84,43 • 81,43 • 85,45 _ П1, L _, / 81,84 ' ? cp (49) The control experiences spent in optimum conditions, podtver - dili predicted extraction of molybdenum (tab. 47). Table 47 Results of control experiences 1 Name of products op.) the Exit, % Maintenance Mo okisl., % Extraction Mo okisl., % Productive solution Kek of leaching Initial ore 5,71 94,29 100 1,321 0,0083 0,0832 90,65 9,35 100 2 Productive solution Kek of leaching Initial ore 5,53 94,47 100 1,376 0,0077 0,0834 91,24 8.76 100 3 Productive solution Kek of leaching Initial ore has shown 5,24 94,76 100 1,440 0,0080 0,0831 90,83 9,17 100 Analysis of results, that the received generalised equation is mathematical model of process and it can be used for a choice of an optimum mode of leaching of the oxidised molybdenum. Technologists - cheskaja the scheme recommended for extraction of oxidised molybdenum from hvo - stov sulphidic flotation at processing mixed molibdenovyh ores> is resulted on fig. 20.