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What are the processes and or technologies for secondary smelting and refining of electronic scrap?
Wiki User
∙ 13y ago
Most electronic scrap is refined chemically in a giant vat of acid then electroplated out!
Wiki User
∙ 13y ago
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Is analog computer used for petrol refining ?
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How importance is a prototype in software engineering?
In Prototyping model instead of the end product a prototype is made. Advantage of prototype is that it helps in gathering and refining of requirements.
What is electronic grade silicon?
A1. Electronic grade silicone is a one-part, moisture- curing RTV (room temperature vulcanizing) silicone sealant/adhesive that is non-slump and cures to form a tough, permanently flexible rubber. The non-corrosive curing system of electronic grade silicone makes it ideally suited for protecting, sealing and insulating corrosion-sensitive electronic and electrical materials such as copper, brass, silver, etc. A2. In the event the questioner was asking about silicon, not silicone, continue. For the manufacture of electronic components, such as silicon-based semiconductor chips, a very high degree of purity is needed. Impurities must be below 1 part per billion. Sometimes called '9 nines purity', which is 99.9999999%. There are a couple of methods for manufacturing to this purity, of which 'zone refining' is the more common. Briefly, in this method, a cylinder of silicon is passed through an induction furnace, such that as the silicon rod is pulled through, only a small length of the rod is melted at any one time, and such is the propensity of silicon to crystallize, that any impurities are swept along the rod, to accumulate at one end. Repeated passages of the rod trough this induction furnace will move all the impurities. The part of the rod at the end, carrying the impurities is discarded.
What is advantage of using prototyping model instead of using waterfall model?
There are many advantages of using prototype model over waterfall model . Some of the advantages are: 1) Excellent for gathering and refining requirements. 2) Useful for assessing and reducing risks.
What was the earliest form of technology?
Stone tools and fire were most likely the earliest forms of technology, as when they were first invented it would have revolutionised their way of life (e.g. able to cook and eat meat safely, not just berries e.t.c.) The first form of computing or robotics was a computer made by Charles Babbage in the 1930's (Please note this last paragraph may need refining).
What are the roles of chemistry in petroleum refining?
The majority of processes involved in petroleum refining are chemical changes.
What is the chemical equations of the processes of refining iron?
C11h15no2
Is oil refining same as fractional distillation?
These processes are not identical but they have many similarities; fractional distillation is a type of refining.
Is a butcher a secondary industry?
Yes, it is a Secondary Industry since Secondary Industries involve taking the raw materials produced by the Primary Industries and refining them, making them a ready product to serve.
What is the role of chemistry in purifying crude oil in an oil refinery?
All the processes involved in the refining of crude oil are chemical processes; this is the field of petrochemistry.
what is the best book on refining precious metals?
One highly recommended book on refining precious metals is "Refining Precious Metal Wastes" by C.M. Hoke. It provides detailed information on various refining techniques, processes, and equipment needed for refining gold, silver, platinum, and other precious metals. It is often considered a comprehensive guide for individuals and businesses involved in precious metal refining.
How do you purify salt from salt mines?
After the dissolution in water the refining involve filtration and processes of crystallization/recrystallization.
How do you get pure salt from muddy salt?
The principal processes are grinding, dissolution, filtration and refining by crystallization/recrystallization.
Why did brad Morgan keep refining his products and processes?
because brad wanted to be more than perfect
What does the acronym ASARCO stand for?
The acronym ASARCO stands the American Smelting and Refining Company. ASARCO is a mining, smelting, and refining company based in Tucson, Arizona, mainly mines and processes copper.
Are metal ores pure compounds?
No, they are often very impure, hence the lengthy and expensive refining processes for most.
What are some industries in the United Arab Emirates?
Primary: Oil & GasSecondary: Aluminum refining, trade, tourism, banking, construction
