Sterling Silver Refiners
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Sterling Silver Refiners
Some sterling silver items like candlesticks and pedestal style containers and bowls, are weighted with wax, plaster or fillers with steel support rods for strength. Dinner knives from sterling flatware, have stainless steel blades with steel support rods and filler that run through the sterling silver handle. The silver is then poured or molded over this material in the manufacturing process.
Smelters and refiners that claim to pay 98% or 99% for your precious metals, also charge refining fees, assay fees, treatment charges, brokering fees, inbound troy ounce weight fees, handling fees and other fees. Nobody can operate a business on 1% or 2%.
Midwest Refineries pays 90% of the amount of pure silver contained in your order for sterling silver (.925), like flatware and jewelry, photographic and electrolitic silver flake, and U.S. coin silver (90%).
Hi Gary, We recently sent some sterling silver flatware and a gold crown. Before we knew it, a check had arrived in the mail. We had a great experience with you all the way around, from our first viewing of the website, to the clear shipping instructions, to rapid payment. It was a pleasure doing business with you. John F. Omaha, NE.
We have always said that sterling silver flatware and some serving pieces need to be weighed separately from forks and spoons because they can be weighted or filled with other non-sterling silver metals and materials. This is why there is very little silver content in one of the knives verses a spoon or fork, which are usually 100% sterling silver weight.
Pictured below is a typical example of a sterling silver place setting knife with a steel blade and steel rod that runs through the handle. The white pile on the left is the cement that is poured into the handle during the manufacturing process. The cement hardens and bonds to the steel rod and the inside of the sterling silver handle.
For a knife like this, it is only the sterling silver casing on the handle that has silver value. The small amount of silver extracted from this knife example is shown to the right of the steel knife parts. If possible, we recommend separating out the silver from the other non-precious metal with pliers if you can. Then you can get a more accurate weight of your sterling silver. If you send your sterling silver place settings to Arch Enterprises we can take these items apart of you, but make sure you know that the weight of your box is not 100% sterling silver.
We conduct assay testing in our ISO Certified Lab to ensure that our customers receive the most for sterling silver. Additionally, our commitment to the environment makes it so that all products from the refining process is able to be recycled and not land filled.
Every piece of jewelry has a unique composition of materials. To define the purity of various precious metal jewelry, like gold and silver, jewelry makers use specific grading systems. These grading systems are meant to help you distinguish between pure silver and alloyed silver before you go about selling any jewelry you might have.
Arch Enterprises is a highly qualified precious metal refiner in the United States. We use proven techniques and skilled technicians to refine gold, silver, and platinum right here in our centrally located precious metal refining facility in the heart of Missouri. We have the capabilities to refine large and small quantities of precious metals and can handle low-grade to high-grade material.
All of our Precious Metals Refinery locations have a state-of-the-art X-Ray gun that tells us the precise elemental analysis of alloy materials in an object. Thermo Fisher Scientific, a reputable company and leader in lab equipment, makes the machine; PMR uses their Niton XRF Analyzer model. The machine is easy to use, tests your silver or silver jewelry within seconds without damaging it, and allows us to have accurate results on the precise elemental makeup of your item. With the help of this tool, we know the exact amount of silver in an object, so we can guarantee our customers the highest payout possible.
Sterling flatware has been gifted for many generations, and has often been a popular wedding present throughout the years. Today, however, most sterling silver items are no longer wanted. Younger generations are turning away from sterling flatware as they do not entertain in the same way as previous generations, or want to polish their silver items. Unsure of what to do with a sterling flatware set that no one seems to want anymore We are currently purchasing the following brands, but may be open to others, too. We also look for the following stamps: 925, 900, 835, 800, sterling silver, and coin silver.
It is best for the silver to have as much surface area as possible. That makes for much faster dissolution. So, if possible and convenient, melt your silver and pour it into the form of shot. Open-up granules are best. If gold is mixed with the silver, it is important that the gold be no more than 20% of the total weight. Otherwise the gold will interfere with the dissolving process. If you believe the gold content to be more than 20%, alloy down with copper to reduce the percentage of gold.
Weigh the silver and put it in one or more 5 gallon buckets. Add 150 ml nitric acid for every ounce of metal in the bucket(s). The acid will tend to react violently to the metal, bubbling and fuming. Make sure there is enough extra room in the bucket to accommodate the foaming (2-3 times, or more, the volume taken up by the silver).
When the acid stops foaming and all the metal appears to be dissolved. Pour off the acid ( filtering it if possible ) into another bucket or buckets. Do not allow any solids to be poured off with the acid or they will contaminate the final silver.
Add to the acid 1 ounce of SAC (silver precipitant crystals) for every 40 ounces of silver that is dissolved. As the SAC hits the acid, it will form a white precipitate (silver ) that will sink to the bottom of the acid.
Give the SAC about 30 minutes or more to work and then pour off, neutralize and dispose of the acid. If possible, filter the acid when pouring it off to make sure that no particles of silver are lost.
Wash the silver repeatedly in water to remove any traces of acid. Add a couple of drops of aqua ammonia to the silver after your last rinse to test. If you see any color of blue, rinse some more. Use only a few drops of aqua ammonia. Ammonia not only smells strong, it can dissolves some of the fine particles of silver.
How to refine silver using baking soda, Karo pancake syrup, table salt, Red Devil drain cleaner and water: First dissolve your silver in nitric acid. You can do this in a plastic bucket but be sure to wear protective clothing like rubber gloves and to do it out of doors. When the silver is all dissolved, pour the acid into another plastic bucket. Be sure not to pour any particles along with the acid. Add ordinary table salt to the acid until the salt stops making white clumps in the acid. Pour off the acid. Add baking soda to the acid to neutralize it. Do not pour off the white "precipitate" that the salt formed. This is pure silver chloride. Rinse the silver chloride with water. To the silver chloride add Red Devil brand drain cleaner (lye) until all the silver chloride has turned black. Rinse with water. Add Karo syrup (dextrose) until all the black material (silver oxide) turns to pure silver. 59ce067264