NEMISA Z ChemGear™ D100 Dry Flocculant System
A D100 dry flocculant mixing-feeding system shipped May 28, 2015 to Negociación Minera Sta. María de la Paz y Anexas S.A. de C.V., located near San Luis Potosi, Mexico. This copper flotation mill is upgrading their process and required a capable flocculant system as an important part of their process update and optimization program.
The standard Z ChemGear D100 system is a fully automatic skid mounted, integrated ‘plug-n-play’ flocculant mixing and feed system having a nominal rating of 100 lb/day (45 kg/day) on a 24-hour day, 0.25% flocculant concentration basis.
Key D100 technical description and features of the system delivered include:
- Over-under tank design where the mixing tank is located above the day tank with ultrasonic monitoring of both tanks. When day tank level reaches low-level limit an automated solenoid valve opens to drain the mixed flocculant solution from the mix tank to day tank. When drained, the system automatically makes a new flocculant batch.
- Hopper capacity is 220 lb (100 kg) with an integrated bag breaker for easy filling. The hopper cover seal is heavy-duty rubber gasket material for long life, soft closing. The oversized lid reduces finger-pinching possibility.
- Dry polymer is augered from hopper into an oversized wetting funnel to minimize fish eyes and flocculant build up. A 1-inch eductor below the wetting funnel suctions the polymer-water slurry into the eductor, further dispersing & flash mixing the flocculant particles as the polymer particles flow into the eductor and high velocity motive water. Eductor water flow transfers the polymer to the mix tank.
- Tanks and hopper made from heavy-duty 1/8″304 passivated stainless steel passivated to minimize corrosion and increase tank life.
- The entire single skid mounted unit is an integrated ‘plug-n-play’, automatically controlled. Ready to run when delivered, installation is relatively simple and startup straightforward.
- Standard 220-volt/1ph/60Hz NEMA 4 panel.
- Control is by standard Automation Direct PLC and HMI using programmable logic to control the system.
- Feed pump controls manual via the HMI or by plant DCS system (Wonderware) remote signal.
- A specifically sized AFX Mixer Technologies mixer ensures good, low shear mixing and flocculant dissolution.
- Three Seepex progressive cavity pumps provided with skid system, two operating with one standby. Butt-welded all stainless interconnected piping with 1″ flanged POCs. The pump VFDs are included in the Zeroday control panel. Manual flow measure monitoring is through installed 2-liter graduated draw down cylinders dedicated to each pump.
Zeroday supplies high quality, long-life, ad durable chemical mixing-feeding systems that enhances process performance and control. A range of flocculant systems built at the same high quality standards include 350 and 700 lb/day over-under tank mixing equipment that are fully skid mounted ‘plug-n-play’ ready. Systems as large as 5-10,000 lb/day using mix-mix system designs are offered.
