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Writing for Info, Benn Dunnington gave the Commodore 64 version of World Games three-plus stars out of five and described it as "my least favorite of the series". Stating that slalom skiing was the best event, he concluded that "Epyx does such a nice, consistent job of execution, tho, that it's hard to take off too many points even for such boring material". [12]
Smelting is a process of applying heat and a chemical reducing agent to an ore to extract a desired base metal product. [1] It is a form of extractive metallurgy that is used to obtain many metals such as iron , copper , silver , tin , lead and zinc .
The following is a list of the most expensive video games ever developed, with a minimum total cost of US$50 million and sorted by the total cost adjusted for inflation. Most game budgets are not disclosed, so this list is not indicative of industry trends.
The initial product of copper smelting was impure "blister" copper, which contained sulfur and oxygen. To remove these impurities, the blister copper was repeatedly melted and solidified, undergoing a cycle of oxidation and reduction. [7] In one of the previous melting stages, lead was added.
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The ISASMELT process is an energy-efficient smelting process that was jointly developed from the 1970s to the 1990s by Mount Isa Mines (a subsidiary of MIM Holdings and now part of Glencore) and the Government of Australia's CSIRO. It has relatively low capital and operating costs for a smelting process.
The HIsarna ironmaking process is a direct reduced iron process for iron making in which iron ore is processed almost directly into liquid iron ().The process combines two process units, the Cyclone Converter Furnace (CCF) for ore melting and pre-reduction and a Smelting Reduction Vessel (SRV) where the final reduction stage to liquid iron takes place.
Sodium cyanide is produced on a billion-ton/year scale mainly for this purpose. "Black cyanide", a carbon-contaminated form of calcium cyanide (Ca(CN) 2 ) is often used because it is cheap. The crude ore is washed with a c. 0.3% solution of cyanide in air, often repeatedly, and the aqueous extract is collected and refined further.