Direct elemental silver precipitation with reagents

[wicky]

I am recovering 2kg silver from nitric acid weekly

I have been cementing elemantal silver on copper from low ph nitric acid
I have been pricipitating out AgCl from nitric acid by adding table salt

Need help from you guys

I want to use a reagent to directly priciptate Elemental Silver from nitric acid

Suggest me one from the list or please guide me for any other,

Glucose
Sugar substitute
Formula: C6H12O6

Sucrose
Table sugar
Formula: C12H22O11

Saccharin
Medicinal product
Formula: C7H5NO3S

Formaldehyde
Chemical Compound
Formula: CH2O

Hydrazine Hydrate
Chemical Compound
Formula: N2H4

Phosphorus Acid
Chemical Compound
Formula: H3PO3

I do not want colloidal silver which is not settling down in hours, and hard to filter..

 

[4metals]

Sodium formate

http://goldrefiningforum.com/phpBB3/viewtopic.php?f=50&t=1275&hilit=Volhard