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  2. Factorio - Wikipedia

    en.wikipedia.org/wiki/Factorio

    Factorio is a construction and management simulation game focused on resource-gathering with real-time strategy and survival elements. The player advances by locating and harvesting resources to craft various tools and machines, which in turn create more advanced materials that allow for the progression to more sophisticated technologies and ...

  3. Sicilian method - Wikipedia

    en.wikipedia.org/wiki/Sicilian_method

    In its most basic form the ores were piled in a mound and ignited. The semi-pure sulfur flowed down and the solidified mass was collected at a lower level. It was the only industrial method of recovering sulfur from elemental deposits until replaced by the Frasch process. [1] Most of the world's sulfur was obtained this way until the late 19th ...

  4. Frasch process - Wikipedia

    en.wikipedia.org/wiki/Frasch_process

    Sulfur (m.p. 115 °C) melts and flows into the middle tube. Water pressure alone is unable to force the sulfur into the surface due to the molten sulfur's greater density, so hot air is introduced via the innermost tube to froth the sulfur, making it less dense, and pushing it to the surface. [1] The sulfur obtained can be very pure (99.7 - 99.8%).

  5. File:Sulfur-Iodine Process.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Sulfur-Iodine_Process.pdf

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses ...

  6. Wet sulfuric acid process - Wikipedia

    en.wikipedia.org/wiki/Wet_sulfuric_acid_process

    The wet sulfuric acid process (WSA process) is a gas desulfurization process. After Danish company Haldor Topsoe introduced this technology in 1987, it has been recognized as a process for recovering sulfur from various process gases in the form of commercial quality sulfuric acid (H 2 SO 4) with the simultaneous production of high-pressure steam.

  7. Roasting (metallurgy) - Wikipedia

    en.wikipedia.org/wiki/Roasting_(metallurgy)

    Oxidizing roasting, the most commonly practiced roasting process, involves heating the ore in excess of air or oxygen, to burn out or replace the impurity element, generally sulfur, partly or completely by oxygen. For sulfide roasting, the general reaction can be given by: 2MS (s) + 3O 2 (g) -> 2MO (s) + 2SO 2 (g)

  8. Contact process - Wikipedia

    en.wikipedia.org/wiki/Contact_process

    The contact process is a method of producing sulfuric acid in the high concentrations needed for industrial processes. Platinum was originally used as the catalyst for this reaction; however, because it is susceptible to reacting with arsenic impurities in the sulfur feedstock, vanadium(V) oxide (V 2 O 5) has since been preferred.

  9. Machine tool - Wikipedia

    en.wikipedia.org/wiki/Machine_tool

    American production of machine tools was a critical factor in the Allies' victory in World War II. Production of machine tools tripled in the United States in the war. No war was more industrialized than World War II, and it has been written that the war was won as much by machine shops as by machine guns. [14] [15]