NEMISA Z ChemGear D100 Dry Flocculant System

July 14, 2015 by Bill Hancock [ 1 ]

NEMISA-02A 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:

  1. 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.
  2. 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.
  3. 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.
  4. Tanks and hopper made from heavy-duty 1/8″304 passivated stainless steel passivated to minimize corrosion and increase tank life.
  5. 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.
  6. Standard 220-volt/1ph/60Hz NEMA 4 panel.
  7. Control is by standard Automation Direct PLC and HMI using programmable logic to control the system.
  8. Feed pump controls manual via the HMI or by plant DCS system (Wonderware) remote signal.
  9. A specifically sized AFX Mixer Technologies mixer ensures good, low shear mixing and flocculant dissolution.
  10. 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.



Categories: AFX Mixing and Pumping Technologies, Flocculants, Mixers, News, z ChemGear