Photographic paper and film as well as other suitable combustible silver containing materials are incinerated in a 1.3 metre diameter refractory lined rotary kiln incinerator. The kiln combustion conditions are maintained by instrumentation and control systems, with operational data logging and retrieval by an on-line computer.

Material is charged into a static primary combustion chamber, where material is ignited, before moving into the rotating kiln. Combustion air is drawn into the ash discharge end of the kiln, flowing counter-current to the burning material, and is drawn through into the primary chamber.

Material and ash move along the kiln by a combination of the rotation and the inclination of the kiln. Ash is discharged from the end of the kiln. The counter-current airflow ensures that ash is well burned and cool before discharge.

Combustion is sustained by the calorific value of the raw material. No fuel is used. Wet materials can be dried by directly using the waste heat generated within the combustion process.

The exhaust gases are quenched by water spray for temperature control. Lime and activated carbon are injected into the raw gas stream to aid the absorption of acid gases and dioxins. The exhaust gases are cleaned by a dry filter plant, conforming to BAT as specified by the UK’s EA, before discharge to atmosphere through a 35 metre exhaust stack.

Emissions to atmosphere are continuously monitored by a particulate monitoring system and data is automatically logged into an on-line computer. Frequent additional sampling of the exhaust stack also monitors for emissions of gaseous and fume products.

JBR Recovery Ltd is one of the UK and Europe's leading silver recovery and precious metal recycling specialists, offering smelting, refining and photographic waste recycling and recovery, waste incineration, waste management and Good delivery 999 refined silver.

Areas of expertise include: silver refining, silver smelting, silver recovery, silver recycling, silver refiner, silver bullion, silver melting, silver good delivery, precious metal refining, precious metal smelting, precious metal recovery, precious metal recycling, precious metals smelting and refining, precious metal refiners, precious metal recovery, precious metal market, precious metal silver, silver metal scrap, precious metal scrap, photographic waste recovery, photographic waste silver recovery, refining sterling silver, precious metal industry, metal smelting, waste incineration, waste management, waste management company, waste management uk, waste management company uk, waste management services uk, national waste management company uk, gold recovery and refining, platinum recovery and refining, palladium recovery and refining, platinum group metals recovery and refining, gold refining, platinum refining, palladium refining, PGM refining. www.jbr.co.uk