Coconut shell gold activated carbon uses high quality coconut shell
as raw material, and is produced by physical method, high
temperature steam activation technology and special process of
levigation. The product has the advantages of uniform particle
size, high mechanical strength, strong adsorption capacity, good
abrasive resistance. It is suitable for gold production of modern
gold mining, and is mainly used for separating and extracting of
heavy metal in gold metallurgy industry, which is used heap
leaching or carbon plasma method to extract gold.
Activated carbon is a porous material containing carbon, which has
highly advanced pore textureand is a excellent adsorbent, per gram
of activated carbon adsorption area as much as the equivalent of
eight tennis courts. The adsorption of activated carbon is reached
by physical adsorption force and chemical adsorption force, besides
carbon which contains a little hydrogen, nitrogen oxygen and ash,
the structure is accumulated by carbon form six ring content.
Because of six ring carbon irregular arrange, the activated carbon
has the characters of microporous volume and high surface area.
Activated carbon is constituted by various carbonaceous materials,
which contains wood, sawdust, coal, coke, peat, lignin, nut shell,
hard nut shell, sugar cane pulp, bone, lignite, petroleum residue
and etc. The coal and coconut shell have become the most commonly
employed raw material to produce activated carbon.
Activated carbon manufacturing basically divide into two major
processes.First, include dehydration and carbonization, heating
materials, drying in the temperature 170℃ to 600℃ and making the
original organic carbonized about 80%.Second, it is to make
carbonized content activation, which is finished through the
activator of steam and carbon reaction.
In the Heat-sink reaction, it is mainly produce the mixed gases
composed by CO and H2 to burn Heating carbonized content to proper
temperature(800℃--1000℃),which is used to burn all biodegradable
materials. So the activated carbon has advanced mesoporous
molecular, large specific area and strong absorption capacity.
The pore of activated carbon can divide into three types according
to aperture size. Macro pore: radius 1000---1000000AFilter pore:
radius 20----1000A Micro pore: radius---20A
Because of different raw material, activated carbon has different
size of aperture. The coconut shell activated carbon has the
smallest aperture. The wood based activated carbon usually has the
biggest aperture, and is used to adsorb larger molecules and almost
dedicated in liquid phase. The first type granular activated carbon
is used in urban water treatment field, which is made of wood and
called wood charcoal.
The aperture size of coal based activated carbon is between them.
In the coal based activated carbon, lignite activated carbon has
more filter space and larger average pore size than anthracite
activated carbon, so it can effectively remove macromolecular
organic matters in water.
Usually activated carbon is used in water treatment, which does not
need larger surface area, but should have more filter pore and
larger average pore size.
The usages of activated carbon
Activated carbon has high efficiency air purification function, can
build comfortable and clean environment, also can care for human
health, it is invisible air filters. Activated carbon uses the
function of physical adsorption and chemical decomposition combined
can decompose harmful gases such asmethanol, ammonia, benzene,
cigarettes, lampblack etc.
and all kinds of unusual smell, especially carcinogenic aromatic
substances. It has strong adsorption capacity, is a common
adsorbent, catalyst or catalyst carrier, and can easy fully touch
with harmful gases in air. Activated carbon uses own pore
adsorption to adsorb the harmful gases molecular into pore, then
blow out fresh and clean air.
So the family partnership can’t do without activated carbon.
Activated carbon is widely used in all aspects of industrial and
agricultural production, such as petrochemical industry non-alkali
deodorization (refined de-mercaptan), ethylene desalination water
(refined packing), catalyst carrier (platinum, palladium, rhodium
and etc.), water purification and wastewater treatment, the power
plant water treatment and protection in electric power industry,
chemical catalyst and carrier, gas purification, solvent recovery
and the decolorization and refining of oil in chemical industry,
beverage, wine, MSG liquor in food industry and refining,
decolorization of foodstuff, gold extraction and tail liquid
recovery in gold industry, wastewater treatment, wa