Haat`s PMR model furnace / incinerator is quite popular for recovery of noble metals in the jewellery manufacturing and pharma industries. The popularity of the system stems from its performance and efficiency, enabling the user to recover more than he was doing the conventional way or with any other type of furnace.

Manufacture of gold jewellery always generates scrap, whether manufacturing is done in a traditional way or in mass production.

In the case of the pharma industry, catalysts are used to expedite chemical reactions and their recovery becomes very important to control manufacturing costs.

In jewellery making, there have been and are traditional methods like cyanide/nitric acid leaching to recover the noble metal from the floor sweepings, personal protective equipment, etc. but this is neither a safe practice, nor does it make for effective recovery.

Again in recovering the spent catalyst, the pharma industry may directly use pulverizers, granulators, furnaces, etc. or may outsource recovery. The equipment used may not give satisfactory results because it is standard equipment which does not address the specific need in terms of optimum recovery. In this case, it also becomes another expensive operation, which the industry might want to outsource, rather than spending time and money.  In the case of outsourcing, recovery will be based on the type of equipment and process used.

Many of the clients have recovered the cost of our incinerator equipment in a matter of few months, thanks to higher recovery of the precious metals.

How is this possible? The simple answer to this is the proven design of the incinerator.

There are in fact two models available in this range;

1. Dual static hearth and

2. Single moving bogie hearth.

Both designs are equally efficient. The dual static hearth design uses burners from below, while the waste laden trays are placed above. In the case of the bogie, it does not have a burner directly heating the waste.  Burners heat up air in a hot air generator and this hot air at high temperatures is pumped into the combustion chamber.

The constant circulation of heat and hot air within the chamber, which is kept at a very mildly positive pressure, enables effective destruction of the organics from the waste, leaving the precious metal dust in place.

In the case of either models, the pressure in the combustion chamber is mildly positive, to prevent expensive metal dust fly off.

If more than one recovery point is desired, a suitable scrubbing system can be retrofitted to the furnace, in which case the pressure in the furnace has to be maintained mildly negative.

Haat`s PMR model furnace / incinerator is in use both by manufacturers as well as companies doing recovery work exclusively for different clients. In both cases, the results are quite satisfying, which is what makes the PMR a very popular model.