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本文首次提出了一个用于副反应或中间产物对总反应速率有影响的数学模型:(da)/(dt)=k_1(1—α)~(2/3)e~(-k)_2~α(A—1)式中:α——物料在时间 t 被提取或转换率,k_1——修正后的速率常数参数,k_2——反映了副反应或中间产物对总反应速率影响程度的常数参数。本实验表明,酸性硫酸铜体系中高冰镍(Ni_3S_2)的热压浸出速率过程,当体系初始铜镍摩尔比大于4.3时,服从于上述数学模型(A—1),且:k_1=3.30×10~(11)(-14.0+(1)/(d_0))e~(14100)/(T)(A—2)k_2=1.95×10~8(4.63×10~(-5)+d_0~3)(-1.675×10~(-3)+(1)/(T))(A—3)文中通过数学模型(A—1)、(A—2)、(A—3)的计算,提出了强化金属化高冰镍选择性浸出流程中热压浸出单元的途径。
This paper presents for the first time a mathematical model for the effect of side reactions or intermediates on the overall reaction rate: (da) / (dt) = k_1 (1-α) ~ (2/3) e ~ (-k) α (A-1) where: α - the material is extracted or converted at time t, k_1 - the modified constant rate parameter, k 2 - constant reflecting the degree of influence of side reactions or intermediates on the overall reaction rate parameter. The experimental results show that the hot pressing leaching rate of high Ni Ni (3S_2) in acid copper sulfate system obeys the above mathematical model (A - 1) when the initial Cu / Ni mole ratio of the system is more than 4.3 and k_1 = 3.30 × 10 ~ (11) (- 14.0+ (1) / (d_0)) e ~ (14100) / (T) (A-2) k_2 = 1.95 × 10 ~ 8 (4.63 × 10 ~ (-5) + d_0 ~ 3 ) (-1.675 × 10 -3 + (1) / (T)) (A-3) The calculation of the mathematical models (A-1), (A-2) and (A-3) The Way to Strengthen Hot Pressing Leaching Unit in Selective Leaching Process of Metallized High Ice Nickel.