Lead Nitrate 99% is used for activation of antimony sulphide minerals and to reactivate copper sulphides depressed with cyanide. The addition of a lead salt to cyanidation pulp is practiced in some operations and it is also reported that an excess may cause retardation in the rate of cyanidation.
Lead Nitrate 99%
1. WHAT KEMCORE PROVIDES AS A PARTNER?
Reliable Supply
KEMCORE is always prepared to fulfill orders as they're placed and deliver the product customers need.
Commitment to Safety
KEMCORE has been safely and responsibly distributing Lead Nitrate for decades and continues to make advancements through improved packaging options, on-site unloading services, and comprehensive training for our customers.
Dedicated Support
Whether it’s assisting with Lead Nitrate handling or regulatory needs like licensing, permitting, and compliance monitoring, support is available.
2. COUNTRIES OF ORIGIN
- South Africa
- China
3. LOGISTICS
Availability in South Africa - 5 Days
From Durban to West Africa:
- Tema, Ghana - 12 Days
- Takoradi, Ghana - 52 Days
- Lome, Togo - 43 Days
- Dakar, Senegal - 32 Days
- Conakry, Guinea - 43 Days
4. SYNONYMS
LEAD NITRATE,Lead dinitrate,Lead(II) nitrate,Plumbous nitrate,Lead(2+) nitrate,Nitrate de plomb [French],Lead nitrate (Pb(NO3)2),Lead(II) nitrate (1:2),Nitric acid, lead(2+) salt
5. RECOMMENDED USE
Accelerator in gold cyanidation.
Flotation: Activator for stibnite (Sb2S3) in antimony ores.
Advantages of Lead Nitrate
**Lead nitrate is used to activate sphalerite, similar to Copper Sulphate.
**Lead Nitrate is also the most widely used chemical as an accelerator in cynadation of precious metals.
**Adding lead nitrate to the pre-leach circuit increases gold recovery.
** In Several studies it has been presented that addition of lead solution for example lead nitrate, Pb(NO3)2, is able to enhance gold leaching kinetics.
Deschênes and Prud’homme (1997) have presented that lead nitrate can act in different ways.
**They observed that lead nitrate can activate the surface of a passivated gold particle, prevent a passivation film formation on the gold surface and also precipitate the soluble sulphides.
*** Kondos et al. (1995) have presented that sulphide mineral, which is distributed in the solution, will be precipitated by excess lead as PbS. Lead ion may also react with gold sulfide film making the passive gold particle to become active again in the absence of sulfide formation
*** effect of lead ions in the form of lead nitrate, lead sulfide and lead sulfite, which are reacted with gold and accelerate gold dissolution
*** sulfide ion concentration is decreased fast with the addition of lead ions.
*** It may enhance gold leaching from ores by continually removing the leached species from the solution, redistributing the solid/liquid equilibrium and favoring further gold dissolution.
*** addition of lead nitrate does not affect cyanide consumption.
*** addition of lead nitrate together with oxygen provides the most effective gold extraction.
***** also presented that higher concentrations of lead nitrate can reduce gold extraction****
Lead (II) Nitrate Preparation
Lead (II) Nitrate is prepared by mixing 12.5 kg into 200 litres drum of water. Lead Nitrate activate the surface of a passivated gold particle and prevent a passivation film formation by sulphide minerals on the gold surface by forming gold-lead alloys on the surface of gold. Sulphide minerals or layers are precipitated by excess lead as PbS and through the reaction of Lead ions with gold sulphide films, and these make the passive gold particle to become active again in the absence of sulfide formation and these accelerate the dissolution of gold.
Dosage
The dosage of Lead (II) nitrate /Pb(NO4) goes up to 200g/t. Above 200g/t the dissolution rate of gold reduced due to the formation of Pb(OH) which forms a passive layer on gold surface. A dosage of 250ml/min is also used.
pH range
The PH ranges from 8.5 to 9.0. Lead nitrate works for Gold ores which contains sulphides such as pyrite ores.
Lead Nitrate is also used in other applications such as:
- Medical Astringent;
- Tanning Material for Leather-making;
- Dyeing Mordant;
- Photograph Promoting Agent;
- Flotation for Ore;
- Chemical Reagents; and also used for making Fireworks, Match, and other Lead Salts.
6. COMPOSITION
Molecular Formula: :N2O6Pb
Cas Number: 10099-74-8
Physical Properties
Appearance: Colorless or white crystalline
Form, crystalline or granular solid/
Odor: Odorless
Boiling point: N/A
Melting/freezing point: :470 °C
Specific gravity: 4.53
Flash point: N/A
pH: 3.0-4.0 (20% aq. solution)
Synonyms: Glacial acetic acid; Acetic acid solution; acetic acid 50%; acetic acid, of a concentration of more than 10 per cent, by weight, of acetic acid; Acetic Acid Glacial BP; Natural Acetic Acid; Acetic acid (36%); Acetic acid, food grade; Acetic Acid Glacial; GAA; Acetic Acid, Glacial
It is a colourless liquid that when undiluted is also called glacial acetic acid. It has a distinctive sour taste and pungent smell.
Acetic acid uses: Additive in industrial explosives in Mining.
Other uses include use of acetic acid in the production of vinyl acetate monomer, acetic anhydride and ester production.
Chemical gassing agents -In the case of emulsion explosives, using Acetic acid can accelerate the gassing process. The chemically gassed emulsions may take 40 – 50 minutes for completion of gassing within the blast holes, particularly when the emulsion is colder.
In cases where acetic acid is used, it is added to the emulsion prior to gassing, the desired amount of acid is mixed in the emulsion, before adding the gasser.
A gassing solution comprising sodium nitrite in water together with the selected enol compound and acetic acid is introduced into the emulsion explosive at the blast hole by entraining the gassing solution into a stream of the emulsion explosive using pumps.
The solution pH is an important parameter in the gassing of emulsion explosives due to the high cost associated with acid addition therefore a pH value should preferably be maintained at 4.1 or below.
|
Identifiers |
|
|
Abbreviations |
AcOH |
|
CAS number |
64-19-7 |
|
PubChem |
176 |
|
ChemSpider |
171 |
|
UNII |
Q40Q9N063P |
|
EC number |
200-580-7 |
|
UN number |
2789 |
|
Properties |
|
|
Molecular formula |
C2H4O2 |
|
Molar mass |
60.05 g mol |
|
Appearance |
Colourless liquid |
|
Odor |
Pungent/Vinegar-like |
|
Density |
1.049 g cm |
|
Melting point |
16 to 17 °C; 61 to 62 °F; 289 to 290 K |
|
Boiling point |
118 to 119 °C; 244 to 246 °F; 391 to 392 K |
|
Solubility inwater |
Miscible |
|
Acidity (pKa) |
4.76 |
|
Basicity (pKb) |
9.198 (basicity of acetate ion) |
|
Refractive index(nD) |
1.371 |
|
Viscosity |
1.22 mPa s |
|
Dipole moment |
1.74 D |
1- TRANSPORT INFORMATION
- Transport-UN 2789
- Hazard Class No. : 8
- Packing Group: II
- H.S. Code: 2915211900
2- STORAGE & HANDLING
- Stable at room temperature in closed containers under normal STORAGE & HANDLING and handling conditions. Refer to SDS sheet
3- PACKING
|
Packing type |
Tons/FCL |
|
IBC Drums |
18tons/FCL |
|
30kg Drums |
21tons/FCL |
|
200Kg drums |
16tons/FCL |
4.Environmental impact
- Acetic acid biodegrades readily under both aerobic and anaerobic conditions.
- Acetic acid does not absorb light with wavelengths >290 nm(4), and is not expected to be susceptible to direct photolysis by sunlight(SRC).
- Incase of spillage neutralize spill with soda ash or lime.
5. Download our Acetic acid msds for more handling information.