Siddhanath Complex, Gala No. 1/2, Atpadi-Dighanchi Road, Atpadi, Sangli – 415301 +91 74991 43474 info@naenterprises.in

Our Products

Custom-engineered machines for every stage of precious metal processing.

10+ Product Categories

Complete Refinery Solutions

Every product is fabricated in-house, custom-built to your capacity and process, and delivered with on-site installation.

Gold Refinery Machine

A complete chemical refining system for achieving 999.9 fine gold purity. Built with PP/HDPE/FRP chemical-resistant tanks, heating elements, ventilation, and process monitoring systems.

  • Capacity: 1 kg to 50 kg/batch
  • Material: PP / HDPE / FRP construction
  • Purity achievable: 999.9 fine gold
  • Fume extraction included
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Silver Refinery Machine

Electrolytic and chemical process setups for refining silver to 999+ fineness. Suitable for scraps, dore bars, and secondary silver sources.

  • Electrolytic & chemical process
  • Capacity: 5 kg to 100 kg/batch
  • Output: 999 fine silver
  • Auto temperature control
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BIS Hallmarking Setup

Complete BIS-approved hallmarking infrastructure for jewellery assay centres. Includes XRF tester, acid testing kits, touchstone, engraving tools, and documentation systems.

  • BIS-compliant equipment
  • XRF analyser compatible
  • Full lab furniture & ventilation
  • Turnkey setup & documentation
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NABL Fire Assaying Lab Setup

Complete NABL-standard fire assay laboratory including muffle furnace, cupellation furnace, scorifiers, cupel moulds, analytical balance, fume hood, and lab furniture.

  • Muffle & cupellation furnaces
  • Temperature range: up to 1200°C
  • NABL-compliant layout design
  • Full instrumentation package
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Fume Hood Scrubber System

Industrial-grade acid fume extraction and wet scrubbing system for precious metal labs. Neutralises HNO₃, HCl, and other corrosive vapours before discharge.

  • PP/FRP corrosion-resistant body
  • Wet scrubbing with NaOH dosing
  • Blower capacity: 500–5000 CFM
  • PCB norm compliant
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Chemical Reaction Vessel

Custom PP/HDPE/FRP reaction tanks for gold & silver chemical processes. Designed for acid resistance, controlled heating, and safe venting.

  • PP / HDPE / FRP construction
  • Capacity: 20 L to 2000 L
  • Fitted lids with vent ports
  • Heating jacket option available
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Dust Refining Machine

Processes floor dust, polishing dust, and sweepings from jewellery workshops to recover precious metal content efficiently and safely.

  • Wet & dry processing options
  • High recovery rate
  • Suitable for gold & silver dust
  • Compact footprint
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ETP Plant (Effluent Treatment)

Effluent treatment plants for refinery wastewater containing heavy metals and acids. Reduces discharge to PCB-acceptable limits.

  • Chemical & filtration treatment
  • pH neutralisation system
  • Metal recovery from wastewater
  • PCB discharge compliant
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Furnaces

Electric muffle furnaces, cupellation furnaces, and annealing furnaces for precious metal labs and refineries. Available in various chamber sizes and temperature ranges.

  • Range: 200°C to 1400°C
  • PID temperature controller
  • Energy-efficient insulation
  • Custom chamber volumes
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Melting Machines

Induction and resistance-based melting units for gold, silver, and platinum group metals. Designed for fast melt cycles, precise temperature control, and operator safety.

  • Induction & resistance types
  • Capacity: 0.5 kg to 20 kg
  • Suitable for Au, Ag, Pt
  • Tilting mechanism available
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Need a custom specification?

We build to your capacity, process, and site requirements. Tell us what you need.