Bhavani Organics
Bhavani Organics

Using Carbon to Extract Gold

Extremely tough carbon designed to extract precious gold from liquid mining mixtures.

Best materialCoconut Shell

The densest, hardest shell carbon available for CIP/CIL tanks.

Perfect size6x12 Mesh

Large enough to be screened out of the pulp, not lost with it.

Won't breakUltra Hard

Resists attrition so gold isn't lost as fine dust.

Extract
Refine
Extract
Refine
Extract
Refine
Extract
Refine
01Overview

Toughness is More Important Than Anything

If the carbon breaks, you lose your gold.

What it removes
  • Dissolved Gold
  • Silver
  • Precious Metals

The carbon doesn't just sit in a quiet filter. It is thrown into massive tanks of churning mud, pumped through pipes, and blasted with heat to get the gold back off. If the carbon crumbles into dust during this harsh process, that gold-covered dust washes out into the waste pile. This is why we use premium coconut shell carbon—it is the toughest natural carbon available.

9799

% Hardness

Mining carbon must be exceptionally hard so it does not turn into dust and take the gold with it.

02How it works

From analysis to changeout

The carbon is one stage in a train, not the whole of it.

01

Dissolving the Gold

At the mine, chemicals are used to dissolve the solid gold out of the crushed rock into a liquid solution.

02

Adding the Carbon

Our tough coconut carbon is added to the mixture. It acts like a sponge, pulling the dissolved gold out of the liquid and locking it inside the carbon.

03

Harvesting the Carbon

The gold-loaded carbon is screened out of the mud. Because our carbon is tough, the pieces stay large and are easy to catch on the screens.

04

Getting the Gold Back

The carbon is washed with hot chemicals to release the gold. The carbon is then baked in a furnace to clean it, so it can be reused again.

03Recommended grades

The carbon this duty asks for

The grades that fit gold recovery — and what each is good at.

CIP / CIL

Carbon-in-Pulp / Carbon-in-Leach

Premium Coconut Shell

The carbon is mixed directly into a thick, muddy slurry of crushed rock and chemicals. It absorbs the gold right out of the mud, and is then screened out to harvest the gold.

  • Gold mining tanks
  • Slurry extraction
  • Precious metal recovery
CIC

Carbon-in-Column

Premium Coconut Shell

Instead of muddy slurry, clear gold-bearing liquid is pumped upward through tall towers filled with this carbon.

  • Clear liquid extraction
  • Heap leach processing
  • Tall column filters
04Key properties

The figures that decide fit

What each property actually governs once the bed is running.

Hardness

%
98 – 99 typical

The most critical number. A score of 98% or higher ensures the carbon won't break into dust and lose your gold.

Particle Size

mesh
6×12 typical

Large enough pieces so they don't slip through the mining screens and get lost in the waste.

Iodine Number

mg/g
High typical

Proves the carbon has a massive amount of microscopic pores ready to absorb the gold.

Platelets

%

We strictly limit flat, flaky pieces of carbon, because flat pieces can slip through the screens and be lost.

05Common questions

Frequently asked questions

It is the hardest natural carbon available. In mining, soft carbon crumbles into dust, and any gold trapped in that dust is lost forever. Coconut carbon is tough enough to survive.

It is the physical size of the carbon pieces. They must be perfectly sized so they are large enough to be caught by the mine's screens, but small enough to absorb gold quickly.

Yes. After the gold is removed, the carbon is baked in an incredibly hot kiln (furnace) to burn off dirt and reopen the pores. It can then be put right back into the gold tanks.

Next step

Specify a grade for gold recovery

Send the stream analysis and the operating conditions, and we will come back with the grade, the bed size and the changeout interval the duty actually needs.