Online Message

CONTACT US

message-img
  • Chromium Ore an overview ScienceDirect Topics

    Chromium Ore. Chromium ores are often classified based on their elemental composition and industrial use into: high-chromium (46–55% Cr2O3, Cr:Fe >2.1) used for metallurgical processes, high-iron (40–46% Cr2O3, Cr:Fe 1.5–2.1) used for chemical and metallurgical purposes, and high-aluminum (33–38% Cr2O3, 22–34% Al2O3) used widely as refractory material [1].

    Details >
  • High Chromium Cast Iron: Part One :: Total Materia Article

    High-chromium white iron is an erosion resistant ferrous alloy widely used in manufacturing, it has for long been applied to components in mining and minerals industry due to its excellent abrasion resistance, imparted by the hard alloy eutectic carbides present in the microstructure.

    Details >
  • Chromium: A Thoroughly Modern Metal Dartmouth Toxic Metals

    With the advent of these chromium-based industries, chromium ore was in high demand. Up until about 1830, the majority of the world’s chromite came from Siberia, where Pallas first found crocoite. As an amateur geologist, Isaac Tyson was one of few Americans who had studied chromite and knew its value and its commercial potential.

    Details >
  • Chromite: The only mineral ore of chromium metal

    Chromite is an oxide mineral composed of chromium, iron, and oxygen (FeCr 2 O 4). It is dark gray to black in color with a metallic to submetallic luster and a high specific gravity. It occurs in basic and ultrabasic igneous rocks and in the metamorphic and sedimentary rocks that are produced when chromite-bearing rocks are altered by heat or

    Details >
  • US743668A Extracting chromium from chrome-iron ore

    chromium iron iron ore ore Prior art date 1903-02-06 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Lifetime Application number US14222703A Inventor Robert Suchy Heinrich Specketer

    Details >
  • What is Chrome White Iron ASTM A532? Penticton Foundry

    Sep 22, 2016· The chromium in high chrome white iron reduces the cooling rate required to produce carbides throughout the material, allowing massive castings to be manufacturing with carbides throughout their section-thickness during the normal solidification encountered in the casting process

    Details >
  • Chromite an overview ScienceDirect Topics

    Chromite ore can be separated in a high-strength field, despite the presence of iron impurities. The choice of method depends on several factors, primarily the type of the gangue. In some cases, separation and dressing methods are optimized to take into account other useful elements, such as PGM (platinum group metals) in South Africa, where

    Details >
  • Ancient Persians were making "20th-century" chromium steel

    // Jerryd, I was thinking the same thing, but I don't think chromium ever tainted iron ore. While it may have been accidental/experimental that first time, it likely wasn't. See toni24's reply, also.

    Details >
  • Ore Mining Using High Chromium Grinding Media

    Ore Mining Using High Chromium Grinding Media. Ore Mining Using High Chromium Grinding Media. We have ore mining using high chromium grinding media,Jul 01 2016 The grinding media may be the ore itself autogenous grinding bars balls or cylpebs or even the ore itself together with a small amount of balls semiautogenous grinding A survey found out that approximately 53 of the grinding circuits

    Details >
  • What is Chrome White Iron ASTM A532? Penticton Foundry

    Sep 22, 2016· The chromium in high chrome white iron reduces the cooling rate required to produce carbides throughout the material, allowing massive castings to be manufacturing with carbides throughout their section-thickness during the normal solidification encountered in the casting process

    Details >
  • Ancient Persians were making "20th-century" chromium steel

    // Jerryd, I was thinking the same thing, but I don't think chromium ever tainted iron ore. While it may have been accidental/experimental that first time, it likely wasn't. See toni24's reply, also.

    Details >
  • US743668A Extracting chromium from chrome-iron ore

    chromium iron iron ore ore Prior art date 1903-02-06 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Lifetime Application number US14222703A Inventor Robert Suchy Heinrich Specketer

    Details >
  • Chromite an overview ScienceDirect Topics

    Chromite ore can be separated in a high-strength field, despite the presence of iron impurities. The choice of method depends on several factors, primarily the type of the gangue. In some cases, separation and dressing methods are optimized to take into account other useful elements, such as PGM (platinum group metals) in South Africa, where

    Details >
  • Direct chromium alloying by smelting reduction of mill

    Jul 18, 2013· The present study clarifies the possibility of using a mixture of chromite ore,mill scale and coke as the precursor for direct chromium alloying. This method offers an alternative process route with cheaper raw materials and fewer process steps (by avoiding the step of ferrochrome production) for producing high chromium iron or steel alloys.

    Details >
  • Chromium News, Prices & Expert Analysis Metal Bulletin

    Fastmarkets MB price book contains over 950 global metal prices including steel prices and scrap prices. Please enter your email address below to start a free trial to access this powerful metals pricing tool.

    Details >

News & Cases

We provide quality and efficient solutions to our global customers