United DMS: The X-Ray Film Recycling and Destruction Specialists

The United DMS Processes

UDMS employs an eight step process to receive, process and recycle your used and scrap x-ray film, sludges and emulsions.

From beginning to end, UDMS will recycle all materials used and conserve as many products as possible to be environmentally friendly.

Step 1 – Transportation & Receiving: UDMS begins the process by scheduling the most efficient form of transportation of your scrap films, sludge's and emulsions. The realized savings are passed directly on to our clients. Once the shipments are received at UDMS, all weights of each box received are given a tracking number, logged onto a receiver sheet and compared to the customer's bill of lading. The customer will then get a call, fax or e-mail for verification before processing begins.

Step 2 – Grinding: Each lot is then sent to the grinders to be chopped into ½" particle flakes. It is at this point that the film becomes non-legible from HIPAA perspective and we also take a five (5) point thief sample of the film in each box for assay. Each box is then re-weighed to get the actual net weights of film for processing. UDMS is HIPAA compliant and will provide all customers with documentation needed upon request.

Step 3 – Lab Analysis: Each lot sample is taken to the lab and run through a riffler to get a composite sample for analysis of silver content. UDMS will keep a retain sample that can be sent out for any assay discrepancies.

Step 4 – Washing: The ground film is then put into one of four (4) washing vessels and mixed with caustic soda, hot water and other chemicals in batch form for over one (1) hour. This removes the coatings and puts the silver into an emulsion state for further processing.

Step 5 – Rinsing: The washed product is then discharged through rinse lines and separators which will remove and separate the cleaned PET for further recycling and send all the emulsions to large ten-thousand (10,000) gallon settling tanks. The cleaned PET is run through a dryer and shipped to companies that recycle it for use in fabrics, carpets, etc.

Step 6 – Settling: The emulsion water mix is tested for PH and chemicals are added to maintain a proper PH balance. Once achieved, polymers are added to precipitate the silver. The water is recycled several times to conserve water and also help the environment. The silver precipitate is then sent to a filter press for dewatering and the product becomes a silver cake and it is sent to a filter press for drying.

Step 7 – Roasting: The silver cake is then sent to our smelting facility where it is put into a calciner for roasting. This process drives off impurities and any excess water and the resulting product is a dried ash powder.

Step 8 – Smelting: The ash is loaded into the smelting furnace with reacting agents for smelting and after a few hours at nearly 2,000 degrees the raw silver is poured into ingot molds of 100 or 1000 Troy Ounce for cooling. Once cool all silver is put into the vault for storage until we ship the product to silver refiners.

New Service-Burning: We also provide in-house burning services for silver bearing fines, paper, sludge, filter cloth bags & socks, floor sweeps, dust and etc.