Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method for treating iron in a silver recovery process










Image Number 2 for United States Patent #8114189.

A method of reducing or preventing the amount of iron sludge or precipitate that forms as a result of the recovery of silver from chemical solutions, such as a standard photographic solution. The method generally involves the introduction of a source of a conjugate organic base, such as a weak organic acid like citric acid or a salt of the conjugate organic base like a citrate salt, to the chemical fluid either before or during the silver recovery process. Preferably the source of conjugate organic base is introduced by combining it with a binder to form a time release cake or placing it in a container that has a semipermeable membrane that maintains the concentration of the conjugate organic base in the chemical fluid from about 0.2 to about 78 milimolar over a period of time.








 
 
  Recently Added Patents
Polymorphic forms of 3-(1-{3-[5-(1-methyl-piperidin-4-ylmethoxy)-pyrimidin-2-yl]-benzyl}-6-oxo- -1,6-dihydro-pyridazin-3-yl)-benzonitrile hydrochloride salt and processes of manufacturing t
Estimating optical characteristics of a camera component using sharpness sweep data
Circuit for and method of enabling communication of cryptographic data
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
Defect inspection method and device therefor
Method of operating an electromechanical converter, a controller and a computer program product
Device for maneuvering a vehicle using maneuvering moves using at least one trajectory
  Randomly Featured Patents
Materials for treatment of periodontal disease
Method for preparing high purity vanadium
Identification of the domain of Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) that mediates adhesion to chondroitin sulfate A
Air freshener
Automated operating system device driver updating system
Bandwidth-based admission control mechanism
On-vehicle electronic control apparatus with timer-based power supply
Device and method for controlling a soldering iron
Gravel packing process
Support member for fuel filler gun display