The main influencing factors of resin in pulp process – the
2020-07-03 09:56Introduction：Similar to the carboninpulp process, the transfer amount of resin in each tank of the resin in pulpprocess at a certain time interval is equal to the addition amount of the resin, so as to ensure that the concentration of exchange resin in
Similar to the carbon in pulp process, the transfer amount of resin in each tank of the resin in pulp process at a certain time interval is equal to the addition amount of the resin, so as to ensure that the concentration of exchange resin in each adsorption tank is equal.Figure 5-41 shows the effect of the uniformity of resin concentration in the slurry of the adsorption tank on the adsorption.The resin concentration in each adsorption tank was the same, and the metal concentration in the slurry solution phase of each tank decreased successively (curve 2).When the adsorption of resin concentration range (curve 1), started three tanks resin concentration is high, the tank in the pulp concentration of solution metal fell sharply, after each tank resin concentration is low, high concentration slurry solution metal in the tank, make the last level of pulp concentration of solution metal 2 times of the normal, lead to reduce the metal recovery.
Resin concentration is expressed as a percentage of volume, that is, the percentage of resin content in the slurry.It has been proved that when gold is absorbed from ore cyanide slurry, the resin concentration should be 1.5% ~ 2.5%.When gold is absorbed from concentrate cyanide slurry, the resin concentration should be 3% ~ 4% due to the high gold content of slurry solution.
Resin flow rate is related to slurry flow, gold content in slurry liquid phase and resin adsorption capacity.The formula is:
q=(2.5QCp)/[(AH-Ap)·]
In the equation q -- resin flow rate (kg/h);
Q -- slurry flow rate(m3/ h);
Cp -- gold solution content in slurry (g/m3);
AH -- the adsorption capacity of the reborn resin(g/kg);Cp -- gold solution content in slurry (g/m3);
Ap -- residual capacity of regenerated resin(g/kg);
ε-- gold recovery rate (%);
2.5 -- conversion coefficient of resin from dry base to wet base;
When cyanidation leaching and adsorption are carried out simultaneously, Q is the ore processing capacity P(tons/hour), and Cp can be replaced by ore gold content C(g/ton). At this time, the calculation formula of resin flowmeter is:
q=(2.5PC)/[(AH-sp)·]
Generally, a batch of exchange resin is added every one hour according to the calculated value, and the amount of resin transferred between the tanks should be uniform and equal, without drastic changes, so as to guarantee the uniform resin concentration in the adsorption tanks.