Noble metal automatic activation ion exchange resin column set system

Abstract

The invention discloses a noble metal automatic activation ion exchange resin column set system which includes a noble metal-containing waste liquid storage tank, a forward washing pump, a discharge path and a plurality of resin columns. The forward washing pump is connected to a resin column washing path through a forward washing pipe. The resin column washing path is communicated with the tops of the resin columns. The bottoms of the resin columns are respectively connected to a circulation path through pipelines. The circulation path is communicated with the resin column washing path. The system also includes a resin activation agent storage barrel which is communicated with a back washing pump through a pipeline. The back washing pump is communicated with the circulation path through a back washing pipe. The back washing pipe and the forward washing pipe are respectively connected to two ports of a forward and back washing electrical three-way valve, wherein the other one port of the forward and back washing electrical three-way valve is connected to the discharge path. The circulation path is also connected to the back washing pipe. The system is provided with the back washing pump and the back washing pipe and has a back washing process, so that resin can be washed and activated fully, thereby improving effect of adsorbing noble metals and exchange quantity of the resin. The system is free of frequently dredging and changing the resin, thereby saving cost and improving efficiency.

Description

technical field [0001] The invention relates to the field of precious metal recovery equipment, in particular to a noble metal automatic activation ion exchange resin tower system. Background technique [0002] The existing noble gold waste liquid adsorption precious metal ion exchange resin tower group is mainly composed of a water pump and a storage tank. When the precious gold waste liquid is washed through one or more resin towers, it can absorb precious metals and generate waste water for discharge. Manual switch when washing figure 1 Valve 13, valve 15, valve 22, and valve 26 are opened, and other valves are closed. After a period of positive washing, suspended matter pollution occurs in the resin tower and the clogging of the resin layer requires manual backwashing. Manual switching during backwashing is as follows: figure 2 The shown valve 11, valve 14, valve 21 and valve 24 are opened, and other valves are closed, and waste water is discharged during backwashing. ...

AI Technical Summary

Problems solved by technology

[0003] Because there is only one water pump and one water tank containing precious gold at the front, when the resin needs to be pretreated and polluted (such as silicide, organic matter, suspended matter, etc.), it is impossible to achieve resin regeneration and treatment only by existing technology and manual front and back washing Resin pollution problem, because the new resin needs to be pretreated, the new resin often contains a small amount of organic oligomers and inorganic impurities, which will gradually dissolve and release in the early stage of use, and the existing technology and manual front and back washing alone cannot guarantee the full regeneration of the resin And restore the adsorption capacity of the resin, resulting in the loss of precious metals in the subsequent treatment

When the resin is polluted, the suspended matter will block the gaps in the resin layer, thereby increasing its water flow resistance, and will also cover the surface of the resin particles, thus reducing its working exchange capacity. Scientifically and effectively achieve a fixed flow rate at an appropriate time, and even cause damage to the pump and loss of precious metals

Because the existing technology only has one water pump and a front-end precious gold-containing water tank for manual front and back washing, the water flow is unstable when the front washing is just started, and some precious gold-containing wastewater will be discharged to the wastewater discharge through the resin layer. When backwashing due to The resin is in a non-compact state, and most of the precious gold-containing wastewater will be discharged to the wastewater discharge through the resin layer, resulting in the loss of precious metals

The existing technology is manual front and back washing. The degree of resin pollution is different in different precious gold wastewater and external environments. When manual front and back washing is used, it is difficult to effectively and immediately deal with the unstable water flow rate caused by resin pollution. Loss of precious metals is labor intensive and inefficient

[0004] Summarize the above existing technical problems: (1) The pretreatment of the new resin cannot ensure that the resin is fully regenerated, resulting in the loss of precious metals in the subsequent treatment; (2) When the resin is polluted, it cannot scientifically and effectively reach a fixed flow rate at an appropriate time, and even cause damage to the water pump and precious metals. Loss; (3) The resin is in a non-dense state during the alternation of front and back washing, resulting in the loss of precious metals; (4) It is labor-intensive and inefficient, and even causes manual misoperation

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