A pound of cut-legged KM capacitors are obtained (taking into account discards 17% - 18%, including plywood separated from dielectric ceramic) 37-38 gr. of plywood. Plywood is light gray open rectangles that can be shattered at a breath easy. Plywood contain different proportions (depending on the temperature coefficient) of Pt-Pd-Ag. Namely Pt and Pd for the content of KM 3,4,5,6 capacitors are purchased. The photo is shown the result of work manually (with tweezers and have the dielectric, with another - separate plywood).

-How to determine gold content? To obtain an average result, we have gathered various electronic parts, in about the same amount, with different "specific weight" of gold. These parts are: KT3102 transistor with small capacity, average capacity - KT603, integrated circuits with yellow legs, type KPEH, K155 series, assembled diodes and electroluminescent indicators diozi АЛС324; СНП type connectors from the old disk to read disks 5 \ '25, the printer switches ВДМ matrix to separate everything I was not needed. For these electronic parts (ie - what was left of them) I got pieces weighing 98.5 grams. ... After remelting I got a piece of gold weighing 1.75 grams. Therefore, extraction is 2% (1.77). This is no royal dissolution and separation of water. Gold jeweler set title "no more than 23 carats." In gold, in the middle, cut marks are visible. In this way some buyers have checked what was inside.

-Silver can be found in the silver side component of electronic parts, connectors and jewelry, silver and zinc batteries, electrical switches and relays in contacts, Christmas-tree, old mirrors (now the reflective layer is aluminum) lamps and mirrors, white photos - black and unnecessary, plates and film photo, silver alloy, broken bottles from the thermos - so much around us we find silver, but it definitely lacks in silver paint (it contains aluminum). Silver is present in part of CD and DVD - 0.4 micron thick silver DVD format DVD - 9 (one-sided disc with two layers of 5 GB capacity).

-We determine the characteristic gloss silver detail by old white - matt, sometimes with blackening, new - after gloss silver or white - mat. Some pleasant contacts nicheleaza - they have a different gloss. The ceramic capacitors also present silver, but also present some difficulties - capacitors are painted with a dye resistant, ceramic or silver is pressed. In such cases, before pouring acid in the capacitors, they can be burned at the stake in Bank of metal, then split with a hammer. For information: type ceramic capacitor KCKM - 504. Capacitor is a ceramic disc on front surfaces of which are applied by means of implanting electrodes containing silver paste. The electrodes are welded wire outlets. The entire surface is covered with a layer capacitors protective and insulating compound which is resistant to mold and fungus maritime fog. Capacitor dielectric - Ceramic subgroup 351.1 STAS 20419-83.
Feature obsolete electronic parts (raw material for processing) and electronic parts radio is one of the most complicated and complex types of secondary metallurgical raw material. Usually the components are subjected to processing: metal in the form of ordinary steel and stainless steel, aluminum and its alloys, copper and alloys or ceramics, some types of glass and vitrified clay, plastic and fiberglass its compositions. Currently, the main quantity of precious metals is based on the PC (computer) old order of military equipment devices, radio devices, telecommunication devices. The main source of secondary raw materials are EC type PC was also begins processing for military electronic equipment. (Married).

-The EC type PC and other computing complex can continue from 0.2 to 10 kg. gold, from 0.5 to 15 kg. silver, 0.1 to 2 kg. palladium and platinum. The military equipment control devices contained precious metals amount in about the same amount. The amount of precious metals that contain PC is a hundredth and a tenth - in military equipment. The main quantity of gold and platinum is a relatively limited number of articles and electronic components: connectors, integrated circuits, transistors and diodes, relays, ceramic capacitors. Silver is more prevalent, the amount of it is contained in these articles, but also in relays, resistors, safety devices.

-Up to 40-60% gold and silver found in contacts of different type connectors. Is the copper base alloys contacts them, most often - brass and copper nickel alloys. Relatively strong contacts are pressed or set free in plastic body based on its composition. The amount of gold contacts is 0.3 -10% (mean 1-5%), 2-8% silver, 0.5 -2% palladium. The remaining gold is found integrated incircuite priority, transistor, diode. Silver also is present in resistant relays and capacitors. Platinum and palladium, usually found in ceramic capacitor component. These electronic items usually are assembled by welding or hard soldering elements exchange standards. The body support is glass fabric reinforced plastic. The filling material (glass fabric) is approx. 70% and alkali-free glass is of boron, aluminum and silicon. As the binder is silicone, plastic, polyester, plastic and other types of plastic policarbomida.
Integrated circuits are typically assembled in plastic or ceramic body. Gold output terminals are joined with a ceramic plate and are strongly pressed in the body. Material output terminals - metal alloy, iron and magnet type "platinum" or "kovar (cobalt-nickel)". Gold is applied in the galvanic method amount of 1-10%. Also, gold is now calling for support for the crystal form of flint and various materials to be welded (glued). Plastic body of the circuits are made of thermoplastic plastic material with 60-70% fillers (talc, asbestos, silica, alumina). Support system for the crystal is usually made of duralumin oxide or corundum. Body diode arrays and some types of integrity is made of certain types of glass without alkali. Weight of gold contained in plastic circuits can be 0.2 to 5%. Output terminal weight is approx. 30% of the circuits. Transistors containing gold as crystal and wire support.
-The amount of gold from gold-containing transistors is 0.3 - 2%. Cover material - nickel or nickel alloy, the material body - nickel iron alloy.
On average, the amount of electronic items that contain gold in quantities of 0.5 and more, is insignificant and their removal allows delineation of a product rich parts - up to 90% of total gold. Articles that contain silver also are limited. The richest in this content are contacts connectors, resistors, transistors, diodes, capacitors, relay contacts. Silver is applied by hand and is more often difficult to extract (resistant, relays), because of this extraction of objects containing silver is rational only in some cases. Articles, which contain palladium and platinum, mainly represented by ceramic capacitors. Palladium content in them is 3-7%, and platinum - priority 0.3 to 0.6%. Moreover,palladium is present as a coating for some types of connectors (0.5 -3% palladium), the variable resistance, and platinum - the relay contacts.

-In the extraction of appliances and devices that can be separate elements, details, group blocks that are part of standard secondary raw materials requires specific processing methods and technologies. When dismantling and radio electronic parts such devices are: - elements exchange standards - relay - Power units - Lamps. The component devices and devices, elements exchange standards, in turn, included such items as: - integrated circuits in the body in plastic, ceramic or glass - ceramic capacitors, tantalum - silver, tantalum (niobium), - resistant and resistor - transistor and transistor assembly - diodes - relays - connectors.